diff --git a/Documentation/networking/filter.rst b/Documentation/networking/filter.rst
index 43cdc4d34745c8d6f963c88db8e0062d8f88767e..f69da50748609e323abdc71e351ec7216571d534 100644
--- a/Documentation/networking/filter.rst
+++ b/Documentation/networking/filter.rst
@@ -305,7 +305,7 @@ Possible BPF extensions are shown in the following table:
vlan_tci skb_vlan_tag_get(skb)
vlan_avail skb_vlan_tag_present(skb)
vlan_tpid skb->vlan_proto
- rand prandom_u32()
+ rand get_random_u32()
=================================== =================================================
These extensions can also be prefixed with '#'.
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index fc30df88ffbe5ca54134a5d550b5324776db933b..a2b31d91a1b6e32091edd704310376112d9fbda2 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -371,7 +371,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm,
slots = ((last - first) >> PAGE_SHIFT) + 1;
- offset = get_random_int() % slots;
+ offset = prandom_u32_max(slots);
addr = first + (offset << PAGE_SHIFT);
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index ea128e32e8ca8f28ae7ea8805bb986e78c7d6074..e07f359254c3cca23352984055a98a5e21230220 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -655,7 +655,7 @@ struct page *get_signal_page(void)
PAGE_SIZE / sizeof(u32));
/* Give the signal return code some randomness */
- offset = 0x200 + (get_random_int() & 0x7fc);
+ offset = 0x200 + (get_random_u16() & 0x7fc);
signal_return_offset = offset;
/* Copy signal return handlers into the page */
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index 9015f49c206efad37e131d3ea8635c3497cfa81a..044a7d7f1f6adb49326129cfb8724afe55f1b5d0 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -591,7 +591,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/arm64/kernel/syscall.c b/arch/arm64/kernel/syscall.c
index 733451fe7e41f031e2b5cf34396521d8ec0a0639..d72e8f23422daf6dc0b812855d5d28a36bbd4c54 100644
--- a/arch/arm64/kernel/syscall.c
+++ b/arch/arm64/kernel/syscall.c
@@ -67,7 +67,7 @@ static void invoke_syscall(struct pt_regs *regs, unsigned int scno,
*
* The resulting 5 bits of entropy is seen in SP[8:4].
*/
- choose_random_kstack_offset(get_random_int() & 0x1FF);
+ choose_random_kstack_offset(get_random_u16() & 0x1FF);
}
static inline bool has_syscall_work(unsigned long flags)
diff --git a/arch/loongarch/kernel/process.c b/arch/loongarch/kernel/process.c
index 660492f064e7e4584fa2f04088506fc8ed7076f2..1256e3582475fbc06f4f7b712252ddaf2eeb84e0 100644
--- a/arch/loongarch/kernel/process.c
+++ b/arch/loongarch/kernel/process.c
@@ -293,7 +293,7 @@ unsigned long stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & STACK_ALIGN;
}
diff --git a/arch/loongarch/kernel/vdso.c b/arch/loongarch/kernel/vdso.c
index f32c38abd791589527bbba2eda8bd91a7065244a..8c9826062652e3b39a6ee2c03d02370b519eb07d 100644
--- a/arch/loongarch/kernel/vdso.c
+++ b/arch/loongarch/kernel/vdso.c
@@ -78,7 +78,7 @@ static unsigned long vdso_base(void)
unsigned long base = STACK_TOP;
if (current->flags & PF_RANDOMIZE) {
- base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
+ base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 35b912bce42975340d6674ef2a607fa84f165696..bbe9ce471791e7895fd57c4756474b36ffa1a4bf 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & ALMASK;
}
diff --git a/arch/mips/kernel/vdso.c b/arch/mips/kernel/vdso.c
index b2cc2c2dd4bfc44493dd11526b1eebe3b23ef2d2..5fd9bf1d596c6451b6d819952427c11389671f2a 100644
--- a/arch/mips/kernel/vdso.c
+++ b/arch/mips/kernel/vdso.c
@@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
}
if (current->flags & PF_RANDOMIZE) {
- base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
+ base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}
diff --git a/arch/parisc/kernel/process.c b/arch/parisc/kernel/process.c
index 3db0e97e6c066d0ef6bf7c0c568556bf7965b4e6..c4f8374c7018d644f3e1e06f11f50922f490466c 100644
--- a/arch/parisc/kernel/process.c
+++ b/arch/parisc/kernel/process.c
@@ -284,7 +284,7 @@ __get_wchan(struct task_struct *p)
static inline unsigned long brk_rnd(void)
{
- return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
+ return (get_random_u32() & BRK_RND_MASK) << PAGE_SHIFT;
}
unsigned long arch_randomize_brk(struct mm_struct *mm)
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 2b34294517a15a72b17dc290b985366eb8aa1c35..848b0702005d6178bceeed876a5ee3ce24b8d295 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -239,14 +239,14 @@ static unsigned long mmap_rnd(void)
unsigned long rnd = 0;
if (current->flags & PF_RANDOMIZE)
- rnd = get_random_int() & MMAP_RND_MASK;
+ rnd = get_random_u32() & MMAP_RND_MASK;
return rnd << PAGE_SHIFT;
}
unsigned long arch_mmap_rnd(void)
{
- return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
+ return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
}
static unsigned long mmap_legacy_base(void)
diff --git a/arch/parisc/kernel/vdso.c b/arch/parisc/kernel/vdso.c
index 63dc44c4c246bc755c3325faaa8f07b3188bb810..47e5960a2f961f44c70336a35be3c970ae7d2c3b 100644
--- a/arch/parisc/kernel/vdso.c
+++ b/arch/parisc/kernel/vdso.c
@@ -75,7 +75,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
map_base = mm->mmap_base;
if (current->flags & PF_RANDOMIZE)
- map_base -= (get_random_int() & 0x1f) * PAGE_SIZE;
+ map_base -= prandom_u32_max(0x20) * PAGE_SIZE;
vdso_text_start = get_unmapped_area(NULL, map_base, vdso_text_len, 0, 0);
diff --git a/arch/powerpc/crypto/crc-vpmsum_test.c b/arch/powerpc/crypto/crc-vpmsum_test.c
index c1c1ef9457fb494279873799c373b68b9485e09d..273c527868db2e6dd5f81a18d71373d6df616250 100644
--- a/arch/powerpc/crypto/crc-vpmsum_test.c
+++ b/arch/powerpc/crypto/crc-vpmsum_test.c
@@ -82,7 +82,7 @@ static int __init crc_test_init(void)
if (len <= offset)
continue;
- prandom_bytes(data, len);
+ get_random_bytes(data, len);
len -= offset;
crypto_shash_update(crct10dif_shash, data+offset, len);
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 40834ef84f0c58b9df4cc67bd293e8d589121f34..67da147fe34dc5cf2558f6304f87b8c20d0f3d45 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -2303,6 +2303,6 @@ void notrace __ppc64_runlatch_off(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & ~0xf;
}
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index d5119e039d8551194e19fd634267780c4b7acb94..42af4b3aa02b85d0d117f7931cd8eb28f0784004 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -224,13 +224,13 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() & ~PAGE_MASK;
+ sp -= prandom_u32_max(PAGE_SIZE);
return sp & ~0xf;
}
static inline unsigned long brk_rnd(void)
{
- return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
+ return (get_random_u16() & BRK_RND_MASK) << PAGE_SHIFT;
}
unsigned long arch_randomize_brk(struct mm_struct *mm)
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 535099f2736dab852b318ee0b443bb3d2fd3dbb5..3105ca5bd4701d14831078559431aaed0f70d1d1 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -227,7 +227,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned long len)
end -= len;
if (end > start) {
- offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
+ offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 5980ce3488325c5869499da117d919698638fb00..3327c47bc18149826339d49fa5cf48b7ecee5d1a 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -37,7 +37,7 @@ static inline int mmap_is_legacy(struct rlimit *rlim_stack)
unsigned long arch_mmap_rnd(void)
{
- return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
+ return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
}
static unsigned long mmap_base_legacy(unsigned long rnd)
diff --git a/arch/sparc/vdso/vma.c b/arch/sparc/vdso/vma.c
index cc19e09b0fa1e545b629050eded90701e50267e0..ae9a86cb6f3d978245005c06777f12990b9fcad3 100644
--- a/arch/sparc/vdso/vma.c
+++ b/arch/sparc/vdso/vma.c
@@ -354,7 +354,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned int len)
unsigned int offset;
/* This loses some more bits than a modulo, but is cheaper */
- offset = get_random_int() & (PTRS_PER_PTE - 1);
+ offset = prandom_u32_max(PTRS_PER_PTE);
return start + (offset << PAGE_SHIFT);
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 80b90b1276a1937030f570df079d9f72cb11b72f..010bc422a09dd0ad29093b661f9afe5f7f32e54f 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -356,7 +356,7 @@ int singlestepping(void * t)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() % 8192;
+ sp -= prandom_u32_max(8192);
return sp & ~0xf;
}
#endif
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c
index 6292b960037b79d50d187d0982455df8ecd51fb4..311eae30e08944c767995572bce85965038cb145 100644
--- a/arch/x86/entry/vdso/vma.c
+++ b/arch/x86/entry/vdso/vma.c
@@ -327,7 +327,7 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
end -= len;
if (end > start) {
- offset = get_random_int() % (((end - start) >> PAGE_SHIFT) + 1);
+ offset = prandom_u32_max(((end - start) >> PAGE_SHIFT) + 1);
addr = start + (offset << PAGE_SHIFT);
} else {
addr = start;
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 48276c0e479d824bb014f92fbe413086b372c13a..860b60273df3ff38eb406449a768166c8253153b 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -503,7 +503,7 @@ static void bsp_init_amd(struct cpuinfo_x86 *c)
va_align.flags = ALIGN_VA_32 | ALIGN_VA_64;
/* A random value per boot for bit slice [12:upper_bit) */
- va_align.bits = get_random_int() & va_align.mask;
+ va_align.bits = get_random_u32() & va_align.mask;
}
if (cpu_has(c, X86_FEATURE_MWAITX))
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index b1abf663417cdef7eff8f58fbbdfa3732a8ff6c9..c032edcd3d95e06941a4810e09ba18da1707b196 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -53,7 +53,7 @@ static unsigned long int get_module_load_offset(void)
*/
if (module_load_offset == 0)
module_load_offset =
- (get_random_int() % 1024 + 1) * PAGE_SIZE;
+ (prandom_u32_max(1024) + 1) * PAGE_SIZE;
mutex_unlock(&module_kaslr_mutex);
}
return module_load_offset;
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 58a6ea472db92b4efdb7ddaf5eea68034525bbb7..c21b7347a26dd5f26df8cf1802375059dbc659fd 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -965,7 +965,7 @@ early_param("idle", idle_setup);
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
- sp -= get_random_int() % 8192;
+ sp -= prandom_u32_max(8192);
return sp & ~0xf;
}
diff --git a/arch/x86/mm/pat/cpa-test.c b/arch/x86/mm/pat/cpa-test.c
index 0612a73638a81290556c9db3b82ec191ec37fb3d..423b21e80929ab12adfa742b50a931656f96d4cb 100644
--- a/arch/x86/mm/pat/cpa-test.c
+++ b/arch/x86/mm/pat/cpa-test.c
@@ -136,10 +136,10 @@ static int pageattr_test(void)
failed += print_split(&sa);
for (i = 0; i < NTEST; i++) {
- unsigned long pfn = prandom_u32() % max_pfn_mapped;
+ unsigned long pfn = prandom_u32_max(max_pfn_mapped);
addr[i] = (unsigned long)__va(pfn << PAGE_SHIFT);
- len[i] = prandom_u32() % NPAGES;
+ len[i] = prandom_u32_max(NPAGES);
len[i] = min_t(unsigned long, len[i], max_pfn_mapped - pfn - 1);
if (len[i] == 0)
diff --git a/block/blk-crypto-fallback.c b/block/blk-crypto-fallback.c
index 621abd1b0e4d329655b2ea276bed7005e93522ef..ad9844c5b40cb8f491ff9f6647d1f67af007a39e 100644
--- a/block/blk-crypto-fallback.c
+++ b/block/blk-crypto-fallback.c
@@ -539,7 +539,7 @@ static int blk_crypto_fallback_init(void)
if (blk_crypto_fallback_inited)
return 0;
- prandom_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE);
+ get_random_bytes(blank_key, BLK_CRYPTO_MAX_KEY_SIZE);
err = bioset_init(&crypto_bio_split, 64, 0, 0);
if (err)
diff --git a/crypto/async_tx/raid6test.c b/crypto/async_tx/raid6test.c
index 9719c75206618d989dd8421a5ad586c272900822..d3fbee1e03e55f1132202022366798342e044922 100644
--- a/crypto/async_tx/raid6test.c
+++ b/crypto/async_tx/raid6test.c
@@ -37,7 +37,7 @@ static void makedata(int disks)
int i;
for (i = 0; i < disks; i++) {
- prandom_bytes(page_address(data[i]), PAGE_SIZE);
+ get_random_bytes(page_address(data[i]), PAGE_SIZE);
dataptrs[i] = data[i];
dataoffs[i] = 0;
}
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index e4bb03b8b9245601b724dd52d7627858b2f0b3b4..bcd059caa1c81321ee08b45a939b855f9dff2f98 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -855,9 +855,9 @@ static int prepare_keybuf(const u8 *key, unsigned int ksize,
/* Generate a random length in range [0, max_len], but prefer smaller values */
static unsigned int generate_random_length(unsigned int max_len)
{
- unsigned int len = prandom_u32() % (max_len + 1);
+ unsigned int len = prandom_u32_max(max_len + 1);
- switch (prandom_u32() % 4) {
+ switch (prandom_u32_max(4)) {
case 0:
return len % 64;
case 1:
@@ -874,14 +874,14 @@ static void flip_random_bit(u8 *buf, size_t size)
{
size_t bitpos;
- bitpos = prandom_u32() % (size * 8);
+ bitpos = prandom_u32_max(size * 8);
buf[bitpos / 8] ^= 1 << (bitpos % 8);
}
/* Flip a random byte in the given nonempty data buffer */
static void flip_random_byte(u8 *buf, size_t size)
{
- buf[prandom_u32() % size] ^= 0xff;
+ buf[prandom_u32_max(size)] ^= 0xff;
}
/* Sometimes make some random changes to the given nonempty data buffer */
@@ -891,15 +891,15 @@ static void mutate_buffer(u8 *buf, size_t size)
size_t i;
/* Sometimes flip some bits */
- if (prandom_u32() % 4 == 0) {
- num_flips = min_t(size_t, 1 << (prandom_u32() % 8), size * 8);
+ if (prandom_u32_max(4) == 0) {
+ num_flips = min_t(size_t, 1 << prandom_u32_max(8), size * 8);
for (i = 0; i < num_flips; i++)
flip_random_bit(buf, size);
}
/* Sometimes flip some bytes */
- if (prandom_u32() % 4 == 0) {
- num_flips = min_t(size_t, 1 << (prandom_u32() % 8), size);
+ if (prandom_u32_max(4) == 0) {
+ num_flips = min_t(size_t, 1 << prandom_u32_max(8), size);
for (i = 0; i < num_flips; i++)
flip_random_byte(buf, size);
}
@@ -915,11 +915,11 @@ static void generate_random_bytes(u8 *buf, size_t count)
if (count == 0)
return;
- switch (prandom_u32() % 8) { /* Choose a generation strategy */
+ switch (prandom_u32_max(8)) { /* Choose a generation strategy */
case 0:
case 1:
/* All the same byte, plus optional mutations */
- switch (prandom_u32() % 4) {
+ switch (prandom_u32_max(4)) {
case 0:
b = 0x00;
break;
@@ -927,7 +927,7 @@ static void generate_random_bytes(u8 *buf, size_t count)
b = 0xff;
break;
default:
- b = (u8)prandom_u32();
+ b = get_random_u8();
break;
}
memset(buf, b, count);
@@ -935,8 +935,8 @@ static void generate_random_bytes(u8 *buf, size_t count)
break;
case 2:
/* Ascending or descending bytes, plus optional mutations */
- increment = (u8)prandom_u32();
- b = (u8)prandom_u32();
+ increment = get_random_u8();
+ b = get_random_u8();
for (i = 0; i < count; i++, b += increment)
buf[i] = b;
mutate_buffer(buf, count);
@@ -944,7 +944,7 @@ static void generate_random_bytes(u8 *buf, size_t count)
default:
/* Fully random bytes */
for (i = 0; i < count; i++)
- buf[i] = (u8)prandom_u32();
+ buf[i] = get_random_u8();
}
}
@@ -959,24 +959,24 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
unsigned int this_len;
const char *flushtype_str;
- if (div == &divs[max_divs - 1] || prandom_u32() % 2 == 0)
+ if (div == &divs[max_divs - 1] || prandom_u32_max(2) == 0)
this_len = remaining;
else
- this_len = 1 + (prandom_u32() % remaining);
+ this_len = 1 + prandom_u32_max(remaining);
div->proportion_of_total = this_len;
- if (prandom_u32() % 4 == 0)
- div->offset = (PAGE_SIZE - 128) + (prandom_u32() % 128);
- else if (prandom_u32() % 2 == 0)
- div->offset = prandom_u32() % 32;
+ if (prandom_u32_max(4) == 0)
+ div->offset = (PAGE_SIZE - 128) + prandom_u32_max(128);
+ else if (prandom_u32_max(2) == 0)
+ div->offset = prandom_u32_max(32);
else
- div->offset = prandom_u32() % PAGE_SIZE;
- if (prandom_u32() % 8 == 0)
+ div->offset = prandom_u32_max(PAGE_SIZE);
+ if (prandom_u32_max(8) == 0)
div->offset_relative_to_alignmask = true;
div->flush_type = FLUSH_TYPE_NONE;
if (gen_flushes) {
- switch (prandom_u32() % 4) {
+ switch (prandom_u32_max(4)) {
case 0:
div->flush_type = FLUSH_TYPE_REIMPORT;
break;
@@ -988,7 +988,7 @@ static char *generate_random_sgl_divisions(struct test_sg_division *divs,
if (div->flush_type != FLUSH_TYPE_NONE &&
!(req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32() % 2 == 0)
+ prandom_u32_max(2) == 0)
div->nosimd = true;
switch (div->flush_type) {
@@ -1035,7 +1035,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "random:");
- switch (prandom_u32() % 4) {
+ switch (prandom_u32_max(4)) {
case 0:
case 1:
cfg->inplace_mode = OUT_OF_PLACE;
@@ -1050,12 +1050,12 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
break;
}
- if (prandom_u32() % 2 == 0) {
+ if (prandom_u32_max(2) == 0) {
cfg->req_flags |= CRYPTO_TFM_REQ_MAY_SLEEP;
p += scnprintf(p, end - p, " may_sleep");
}
- switch (prandom_u32() % 4) {
+ switch (prandom_u32_max(4)) {
case 0:
cfg->finalization_type = FINALIZATION_TYPE_FINAL;
p += scnprintf(p, end - p, " use_final");
@@ -1071,7 +1071,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
}
if (!(cfg->req_flags & CRYPTO_TFM_REQ_MAY_SLEEP) &&
- prandom_u32() % 2 == 0) {
+ prandom_u32_max(2) == 0) {
cfg->nosimd = true;
p += scnprintf(p, end - p, " nosimd");
}
@@ -1084,7 +1084,7 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
cfg->req_flags);
p += scnprintf(p, end - p, "]");
- if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32() % 2 == 0) {
+ if (cfg->inplace_mode == OUT_OF_PLACE && prandom_u32_max(2) == 0) {
p += scnprintf(p, end - p, " dst_divs=[");
p = generate_random_sgl_divisions(cfg->dst_divs,
ARRAY_SIZE(cfg->dst_divs),
@@ -1093,13 +1093,13 @@ static void generate_random_testvec_config(struct testvec_config *cfg,
p += scnprintf(p, end - p, "]");
}
- if (prandom_u32() % 2 == 0) {
- cfg->iv_offset = 1 + (prandom_u32() % MAX_ALGAPI_ALIGNMASK);
+ if (prandom_u32_max(2) == 0) {
+ cfg->iv_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " iv_offset=%u", cfg->iv_offset);
}
- if (prandom_u32() % 2 == 0) {
- cfg->key_offset = 1 + (prandom_u32() % MAX_ALGAPI_ALIGNMASK);
+ if (prandom_u32_max(2) == 0) {
+ cfg->key_offset = 1 + prandom_u32_max(MAX_ALGAPI_ALIGNMASK);
p += scnprintf(p, end - p, " key_offset=%u", cfg->key_offset);
}
@@ -1652,8 +1652,8 @@ static void generate_random_hash_testvec(struct shash_desc *desc,
vec->ksize = 0;
if (maxkeysize) {
vec->ksize = maxkeysize;
- if (prandom_u32() % 4 == 0)
- vec->ksize = 1 + (prandom_u32() % maxkeysize);
+ if (prandom_u32_max(4) == 0)
+ vec->ksize = 1 + prandom_u32_max(maxkeysize);
generate_random_bytes((u8 *)vec->key, vec->ksize);
vec->setkey_error = crypto_shash_setkey(desc->tfm, vec->key,
@@ -2218,13 +2218,13 @@ static void mutate_aead_message(struct aead_testvec *vec, bool aad_iv,
const unsigned int aad_tail_size = aad_iv ? ivsize : 0;
const unsigned int authsize = vec->clen - vec->plen;
- if (prandom_u32() % 2 == 0 && vec->alen > aad_tail_size) {
+ if (prandom_u32_max(2) == 0 && vec->alen > aad_tail_size) {
/* Mutate the AAD */
flip_random_bit((u8 *)vec->assoc, vec->alen - aad_tail_size);
- if (prandom_u32() % 2 == 0)
+ if (prandom_u32_max(2) == 0)
return;
}
- if (prandom_u32() % 2 == 0) {
+ if (prandom_u32_max(2) == 0) {
/* Mutate auth tag (assuming it's at the end of ciphertext) */
flip_random_bit((u8 *)vec->ctext + vec->plen, authsize);
} else {
@@ -2249,7 +2249,7 @@ static void generate_aead_message(struct aead_request *req,
const unsigned int ivsize = crypto_aead_ivsize(tfm);
const unsigned int authsize = vec->clen - vec->plen;
const bool inauthentic = (authsize >= MIN_COLLISION_FREE_AUTHSIZE) &&
- (prefer_inauthentic || prandom_u32() % 4 == 0);
+ (prefer_inauthentic || prandom_u32_max(4) == 0);
/* Generate the AAD. */
generate_random_bytes((u8 *)vec->assoc, vec->alen);
@@ -2257,7 +2257,7 @@ static void generate_aead_message(struct aead_request *req,
/* Avoid implementation-defined behavior. */
memcpy((u8 *)vec->assoc + vec->alen - ivsize, vec->iv, ivsize);
- if (inauthentic && prandom_u32() % 2 == 0) {
+ if (inauthentic && prandom_u32_max(2) == 0) {
/* Generate a random ciphertext. */
generate_random_bytes((u8 *)vec->ctext, vec->clen);
} else {
@@ -2321,8 +2321,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32() % 4 == 0)
- vec->klen = prandom_u32() % (maxkeysize + 1);
+ if (prandom_u32_max(4) == 0)
+ vec->klen = prandom_u32_max(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_aead_setkey(tfm, vec->key, vec->klen);
@@ -2331,8 +2331,8 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* Tag length: in [0, maxauthsize], but usually choose maxauthsize */
authsize = maxauthsize;
- if (prandom_u32() % 4 == 0)
- authsize = prandom_u32() % (maxauthsize + 1);
+ if (prandom_u32_max(4) == 0)
+ authsize = prandom_u32_max(maxauthsize + 1);
if (prefer_inauthentic && authsize < MIN_COLLISION_FREE_AUTHSIZE)
authsize = MIN_COLLISION_FREE_AUTHSIZE;
if (WARN_ON(authsize > maxdatasize))
@@ -2342,7 +2342,7 @@ static void generate_random_aead_testvec(struct aead_request *req,
/* AAD, plaintext, and ciphertext lengths */
total_len = generate_random_length(maxdatasize);
- if (prandom_u32() % 4 == 0)
+ if (prandom_u32_max(4) == 0)
vec->alen = 0;
else
vec->alen = generate_random_length(total_len);
@@ -2958,8 +2958,8 @@ static void generate_random_cipher_testvec(struct skcipher_request *req,
/* Key: length in [0, maxkeysize], but usually choose maxkeysize */
vec->klen = maxkeysize;
- if (prandom_u32() % 4 == 0)
- vec->klen = prandom_u32() % (maxkeysize + 1);
+ if (prandom_u32_max(4) == 0)
+ vec->klen = prandom_u32_max(maxkeysize + 1);
generate_random_bytes((u8 *)vec->key, vec->klen);
vec->setkey_error = crypto_skcipher_setkey(tfm, vec->key, vec->klen);
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index c897c457203652a4c7d86dc185af5c3b440fcd03..ee69d50ba4fd3bd977fd4c0da72d3a2d4c59ab32 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -781,7 +781,7 @@ static struct socket *drbd_wait_for_connect(struct drbd_connection *connection,
timeo = connect_int * HZ;
/* 28.5% random jitter */
- timeo += (prandom_u32() & 1) ? timeo / 7 : -timeo / 7;
+ timeo += prandom_u32_max(2) ? timeo / 7 : -timeo / 7;
err = wait_for_completion_interruptible_timeout(&ad->door_bell, timeo);
if (err <= 0)
@@ -1004,7 +1004,7 @@ static int conn_connect(struct drbd_connection *connection)
drbd_warn(connection, "Error receiving initial packet\n");
sock_release(s);
randomize:
- if (prandom_u32() & 1)
+ if (prandom_u32_max(2))
goto retry;
}
}
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 01acf235f26357218edb4ac62e1bd7e9ede7620a..2fe28eeb2f387410442d610f6e9f6c2c43503078 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -97,7 +97,7 @@ MODULE_PARM_DESC(ratelimit_disable, "Disable random ratelimit suppression");
* Returns whether or not the input pool has been seeded and thus guaranteed
* to supply cryptographically secure random numbers. This applies to: the
* /dev/urandom device, the get_random_bytes function, and the get_random_{u8,
- * u16,u32,u64,int,long} family of functions.
+ * u16,u32,u64,long} family of functions.
*
* Returns: true if the input pool has been seeded.
* false if the input pool has not been seeded.
@@ -161,15 +161,14 @@ EXPORT_SYMBOL(wait_for_random_bytes);
* u16 get_random_u16()
* u32 get_random_u32()
* u64 get_random_u64()
- * unsigned int get_random_int()
* unsigned long get_random_long()
*
* These interfaces will return the requested number of random bytes
* into the given buffer or as a return value. This is equivalent to
- * a read from /dev/urandom. The u8, u16, u32, u64, int, and long
- * family of functions may be higher performance for one-off random
- * integers, because they do a bit of buffering and do not invoke
- * reseeding until the buffer is emptied.
+ * a read from /dev/urandom. The u8, u16, u32, u64, long family of
+ * functions may be higher performance for one-off random integers,
+ * because they do a bit of buffering and do not invoke reseeding
+ * until the buffer is emptied.
*
*********************************************************************/
diff --git a/drivers/dma/dmatest.c b/drivers/dma/dmatest.c
index 9fe2ae794316967caf8c36a3d38d0cb2a0bf6ba2..ffe621695e472b6b6d96e2a06a85ff514ee65651 100644
--- a/drivers/dma/dmatest.c
+++ b/drivers/dma/dmatest.c
@@ -312,7 +312,7 @@ static unsigned long dmatest_random(void)
{
unsigned long buf;
- prandom_bytes(&buf, sizeof(buf));
+ get_random_bytes(&buf, sizeof(buf));
return buf;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index cd75b0ca2555f49dde7b8a80d14e9bd97361700f..845023c14eb36f1b525d943fe632e58da95f82d8 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -2424,7 +2424,7 @@ gen8_dispatch_bsd_engine(struct drm_i915_private *dev_priv,
/* Check whether the file_priv has already selected one ring. */
if ((int)file_priv->bsd_engine < 0)
file_priv->bsd_engine =
- get_random_int() % num_vcs_engines(dev_priv);
+ prandom_u32_max(num_vcs_engines(dev_priv));
return file_priv->bsd_engine;
}
diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c
index 329ff75b80b97d8cc33b8f2e320d3f7904bb4278..7bd1861ddbdfbd60acf7342d07988cc604df2101 100644
--- a/drivers/gpu/drm/i915/i915_gem_gtt.c
+++ b/drivers/gpu/drm/i915/i915_gem_gtt.c
@@ -137,12 +137,12 @@ static u64 random_offset(u64 start, u64 end, u64 len, u64 align)
range = round_down(end - len, align) - round_up(start, align);
if (range) {
if (sizeof(unsigned long) == sizeof(u64)) {
- addr = get_random_long();
+ addr = get_random_u64();
} else {
- addr = get_random_int();
+ addr = get_random_u32();
if (range > U32_MAX) {
addr <<= 32;
- addr |= get_random_int();
+ addr |= get_random_u32();
}
}
div64_u64_rem(addr, range, &addr);
diff --git a/drivers/gpu/drm/i915/selftests/i915_selftest.c b/drivers/gpu/drm/i915/selftests/i915_selftest.c
index c4e932368b37e751e83641f5195e7a48037acbe0..39da0fb0d6d26f531f2207ebfc446d2e93f19fb7 100644
--- a/drivers/gpu/drm/i915/selftests/i915_selftest.c
+++ b/drivers/gpu/drm/i915/selftests/i915_selftest.c
@@ -135,7 +135,7 @@ static int __run_selftests(const char *name,
int err = 0;
while (!i915_selftest.random_seed)
- i915_selftest.random_seed = get_random_int();
+ i915_selftest.random_seed = get_random_u32();
i915_selftest.timeout_jiffies =
i915_selftest.timeout_ms ?
diff --git a/drivers/gpu/drm/tests/drm_buddy_test.c b/drivers/gpu/drm/tests/drm_buddy_test.c
index 7a2b2d6bc3fe95942c6364352ac97de6a331a298..62f69589a72d360d1a718b759071649ac7d5b120 100644
--- a/drivers/gpu/drm/tests/drm_buddy_test.c
+++ b/drivers/gpu/drm/tests/drm_buddy_test.c
@@ -729,7 +729,7 @@ static void drm_test_buddy_alloc_limit(struct kunit *test)
static int drm_buddy_init_test(struct kunit *test)
{
while (!random_seed)
- random_seed = get_random_int();
+ random_seed = get_random_u32();
return 0;
}
diff --git a/drivers/gpu/drm/tests/drm_mm_test.c b/drivers/gpu/drm/tests/drm_mm_test.c
index 659d1af4dca784714788e9ec72d18d1ab096db3d..c4b66eeae2039f6ce5f754f0006737bf028385bf 100644
--- a/drivers/gpu/drm/tests/drm_mm_test.c
+++ b/drivers/gpu/drm/tests/drm_mm_test.c
@@ -2212,7 +2212,7 @@ static void drm_test_mm_color_evict_range(struct kunit *test)
static int drm_mm_init_test(struct kunit *test)
{
while (!random_seed)
- random_seed = get_random_int();
+ random_seed = get_random_u32();
return 0;
}
diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index 70da57ef2eeb68e162d30da50de73d41b46dd82d..cc2222b85c88174a1b3b9c49beb05d701df78e2a 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -3807,7 +3807,7 @@ static int cma_alloc_any_port(enum rdma_ucm_port_space ps,
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32() % remaining + low;
+ rover = prandom_u32_max(remaining) + low;
retry:
if (last_used_port != rover) {
struct rdma_bind_list *bind_list;
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 14392c942f4928945a91cdd10a15b8e9704299d1..499a425a33791472365b5b1192d41b98fd2bbebb 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -734,7 +734,7 @@ static int send_connect(struct c4iw_ep *ep)
&ep->com.remote_addr;
int ret;
enum chip_type adapter_type = ep->com.dev->rdev.lldi.adapter_type;
- u32 isn = (prandom_u32() & ~7UL) - 1;
+ u32 isn = (get_random_u32() & ~7UL) - 1;
struct net_device *netdev;
u64 params;
@@ -2469,7 +2469,7 @@ static int accept_cr(struct c4iw_ep *ep, struct sk_buff *skb,
}
if (!is_t4(adapter_type)) {
- u32 isn = (prandom_u32() & ~7UL) - 1;
+ u32 isn = (get_random_u32() & ~7UL) - 1;
skb = get_skb(skb, roundup(sizeof(*rpl5), 16), GFP_KERNEL);
rpl5 = __skb_put_zero(skb, roundup(sizeof(*rpl5), 16));
diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c
index f64e7e02b129f1a4bced436cd4fc570d51a986c5..280d61466855676dfd17df8b2ee154c01e62810e 100644
--- a/drivers/infiniband/hw/cxgb4/id_table.c
+++ b/drivers/infiniband/hw/cxgb4/id_table.c
@@ -54,7 +54,7 @@ u32 c4iw_id_alloc(struct c4iw_id_table *alloc)
if (obj < alloc->max) {
if (alloc->flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last += prandom_u32() % RANDOM_SKIP;
+ alloc->last += prandom_u32_max(RANDOM_SKIP);
else
alloc->last = obj + 1;
if (alloc->last >= alloc->max)
@@ -85,7 +85,7 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
alloc->start = start;
alloc->flags = flags;
if (flags & C4IW_ID_TABLE_F_RANDOM)
- alloc->last = prandom_u32() % RANDOM_SKIP;
+ alloc->last = prandom_u32_max(RANDOM_SKIP);
else
alloc->last = 0;
alloc->max = num;
diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c
index 2a7abf7a1f7fb9da3c672b6f860dfb42158600e3..18b05ffb415a3050586f08db1d6f020de60766ca 100644
--- a/drivers/infiniband/hw/hfi1/tid_rdma.c
+++ b/drivers/infiniband/hw/hfi1/tid_rdma.c
@@ -850,7 +850,7 @@ void hfi1_kern_init_ctxt_generations(struct hfi1_ctxtdata *rcd)
int i;
for (i = 0; i < RXE_NUM_TID_FLOWS; i++) {
- rcd->flows[i].generation = mask_generation(prandom_u32());
+ rcd->flows[i].generation = mask_generation(get_random_u32());
kern_set_hw_flow(rcd, KERN_GENERATION_RESERVED, i);
}
}
diff --git a/drivers/infiniband/hw/hns/hns_roce_ah.c b/drivers/infiniband/hw/hns/hns_roce_ah.c
index 492b122d052199f13c062d08f252b5a9be171080..480c062dd04f1f04c82087c0b6f566263a2e0c7c 100644
--- a/drivers/infiniband/hw/hns/hns_roce_ah.c
+++ b/drivers/infiniband/hw/hns/hns_roce_ah.c
@@ -41,9 +41,8 @@ static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr)
u16 sport;
if (!fl)
- sport = get_random_u32() %
- (IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
- IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
+ sport = prandom_u32_max(IB_ROCE_UDP_ENCAP_VALID_PORT_MAX + 1 -
+ IB_ROCE_UDP_ENCAP_VALID_PORT_MIN) +
IB_ROCE_UDP_ENCAP_VALID_PORT_MIN;
else
sport = rdma_flow_label_to_udp_sport(fl);
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index d13ecbdd439171f36103b6abded2307bfca5d61e..a37cfac5e23f96c3c1642d3463dddb2895b07231 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -96,7 +96,7 @@ static void __propagate_pkey_ev(struct mlx4_ib_dev *dev, int port_num,
__be64 mlx4_ib_gen_node_guid(void)
{
#define NODE_GUID_HI ((u64) (((u64)IB_OPENIB_OUI) << 40))
- return cpu_to_be64(NODE_GUID_HI | prandom_u32());
+ return cpu_to_be64(NODE_GUID_HI | get_random_u32());
}
__be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx)
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index ebb35b809f26e0b0339b71d7db5cad10557eaefc..b610d36295bb233e0526b5092eb98d14f7467564 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -465,7 +465,7 @@ static int ipoib_cm_req_handler(struct ib_cm_id *cm_id,
goto err_qp;
}
- psn = prandom_u32() & 0xffffff;
+ psn = get_random_u32() & 0xffffff;
ret = ipoib_cm_modify_rx_qp(dev, cm_id, p->qp, psn);
if (ret)
goto err_modify;
diff --git a/drivers/infiniband/ulp/rtrs/rtrs-clt.c b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
index 758e1d7ebc36549e5313c0a1aabdd23b0739ec32..8546b8816524cba880626287d1dd7568bf683167 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-clt.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-clt.c
@@ -1517,8 +1517,7 @@ static void rtrs_clt_err_recovery_work(struct work_struct *work)
rtrs_clt_stop_and_destroy_conns(clt_path);
queue_delayed_work(rtrs_wq, &clt_path->reconnect_dwork,
msecs_to_jiffies(delay_ms +
- prandom_u32() %
- RTRS_RECONNECT_SEED));
+ prandom_u32_max(RTRS_RECONNECT_SEED)));
}
static struct rtrs_clt_path *alloc_path(struct rtrs_clt_sess *clt,
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index f2c5a7e06fa9366667736e6952bf6438f72cc4f1..3427555b0ccae4d3f4a0992b8d741eced97e45c7 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -401,7 +401,7 @@ static bool check_should_bypass(struct cached_dev *dc, struct bio *bio)
}
if (bypass_torture_test(dc)) {
- if ((get_random_int() & 3) == 3)
+ if (prandom_u32_max(4) == 3)
goto skip;
else
goto rescale;
diff --git a/drivers/md/raid5-cache.c b/drivers/md/raid5-cache.c
index 79c73330020b108df021cf01dc777a18d2e12547..832d8566e165650d43bd271bb436bc19ecbb8171 100644
--- a/drivers/md/raid5-cache.c
+++ b/drivers/md/raid5-cache.c
@@ -2994,7 +2994,7 @@ static int r5l_load_log(struct r5l_log *log)
}
create:
if (create_super) {
- log->last_cp_seq = prandom_u32();
+ log->last_cp_seq = get_random_u32();
cp = 0;
r5l_log_write_empty_meta_block(log, cp, log->last_cp_seq);
/*
diff --git a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
index 9b7bcdce6e44e64a129ad62980fd6e7a8a2f1042..303d02b1d71c9e67d34a8710a54f98c5d2576e9f 100644
--- a/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
+++ b/drivers/media/common/v4l2-tpg/v4l2-tpg-core.c
@@ -870,7 +870,7 @@ static void precalculate_color(struct tpg_data *tpg, int k)
g = tpg_colors[col].g;
b = tpg_colors[col].b;
} else if (tpg->pattern == TPG_PAT_NOISE) {
- r = g = b = prandom_u32_max(256);
+ r = g = b = get_random_u8();
} else if (k == TPG_COLOR_RANDOM) {
r = g = b = tpg->qual_offset + prandom_u32_max(196);
} else if (k >= TPG_COLOR_RAMP) {
diff --git a/drivers/media/test-drivers/vivid/vivid-radio-rx.c b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
index 232cab508f48b0e9a02934dca6196933b73657a5..8bd09589fb153875daaca7f914a2b75711723637 100644
--- a/drivers/media/test-drivers/vivid/vivid-radio-rx.c
+++ b/drivers/media/test-drivers/vivid/vivid-radio-rx.c
@@ -104,8 +104,8 @@ ssize_t vivid_radio_rx_read(struct file *file, char __user *buf,
break;
case 2:
rds.block |= V4L2_RDS_BLOCK_ERROR;
- rds.lsb = prandom_u32_max(256);
- rds.msb = prandom_u32_max(256);
+ rds.lsb = get_random_u8();
+ rds.msb = get_random_u8();
break;
case 3: /* Skip block altogether */
if (i)
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index 64e3e4cb30c20ce893c84933d39dafddd2018df0..6cc32eb54f9d0d6ec212837d3e72fa3344994c20 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -210,7 +210,7 @@ static void vivid_fill_buff_noise(__s16 *tch_buf, int size)
/* Fill 10% of the values within range -3 and 3, zero the others */
for (i = 0; i < size; i++) {
- unsigned int rand = get_random_int();
+ unsigned int rand = get_random_u32();
if (rand % 10)
tch_buf[i] = 0;
@@ -221,7 +221,7 @@ static void vivid_fill_buff_noise(__s16 *tch_buf, int size)
static inline int get_random_pressure(void)
{
- return get_random_int() % VIVID_PRESSURE_LIMIT;
+ return prandom_u32_max(VIVID_PRESSURE_LIMIT);
}
static void vivid_tch_buf_set(struct v4l2_pix_format *f,
@@ -272,7 +272,7 @@ void vivid_fillbuff_tch(struct vivid_dev *dev, struct vivid_buffer *buf)
return;
if (test_pat_idx == 0)
- dev->tch_pat_random = get_random_int();
+ dev->tch_pat_random = get_random_u32();
rand = dev->tch_pat_random;
switch (test_pattern) {
diff --git a/drivers/misc/habanalabs/gaudi2/gaudi2.c b/drivers/misc/habanalabs/gaudi2/gaudi2.c
index 75c4bef7841cb9149834fbe8acb2e739352e91e1..65e6cae6100a469062175d7785f6df6713b69af9 100644
--- a/drivers/misc/habanalabs/gaudi2/gaudi2.c
+++ b/drivers/misc/habanalabs/gaudi2/gaudi2.c
@@ -2948,7 +2948,7 @@ static void gaudi2_user_interrupt_setup(struct hl_device *hdev)
static inline int gaudi2_get_non_zero_random_int(void)
{
- int rand = get_random_int();
+ int rand = get_random_u32();
return rand ? rand : 1;
}
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index ef53a25788248ed6d57472f7a9cf26ee979f254e..95fa8fb1d45f2b5475805147b0bcf40b601abbfd 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -97,8 +97,8 @@ static void mmc_should_fail_request(struct mmc_host *host,
!should_fail(&host->fail_mmc_request, data->blksz * data->blocks))
return;
- data->error = data_errors[prandom_u32() % ARRAY_SIZE(data_errors)];
- data->bytes_xfered = (prandom_u32() % (data->bytes_xfered >> 9)) << 9;
+ data->error = data_errors[prandom_u32_max(ARRAY_SIZE(data_errors))];
+ data->bytes_xfered = prandom_u32_max(data->bytes_xfered >> 9) << 9;
}
#else /* CONFIG_FAIL_MMC_REQUEST */
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 581614196a8413317c651e9d405a891e2c102add..c78bbc22e0d1eaaa05df6ca0bb38e07191f9d0c1 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1858,7 +1858,7 @@ static void dw_mci_start_fault_timer(struct dw_mci *host)
* Try to inject the error at random points during the data transfer.
*/
hrtimer_start(&host->fault_timer,
- ms_to_ktime(prandom_u32() % 25),
+ ms_to_ktime(prandom_u32_max(25)),
HRTIMER_MODE_REL);
}
diff --git a/drivers/mtd/nand/raw/nandsim.c b/drivers/mtd/nand/raw/nandsim.c
index 24beade95c7fb1fa32444911e8c592824a887c9e..672719023241b7e2f1ed0c3b36252334f9ee10d2 100644
--- a/drivers/mtd/nand/raw/nandsim.c
+++ b/drivers/mtd/nand/raw/nandsim.c
@@ -1393,7 +1393,7 @@ static int ns_do_read_error(struct nandsim *ns, int num)
unsigned int page_no = ns->regs.row;
if (ns_read_error(page_no)) {
- prandom_bytes(ns->buf.byte, num);
+ get_random_bytes(ns->buf.byte, num);
NS_WARN("simulating read error in page %u\n", page_no);
return 1;
}
@@ -1402,12 +1402,12 @@ static int ns_do_read_error(struct nandsim *ns, int num)
static void ns_do_bit_flips(struct nandsim *ns, int num)
{
- if (bitflips && prandom_u32() < (1 << 22)) {
+ if (bitflips && get_random_u16() < (1 << 6)) {
int flips = 1;
if (bitflips > 1)
- flips = (prandom_u32() % (int) bitflips) + 1;
+ flips = prandom_u32_max(bitflips) + 1;
while (flips--) {
- int pos = prandom_u32() % (num * 8);
+ int pos = prandom_u32_max(num * 8);
ns->buf.byte[pos / 8] ^= (1 << (pos % 8));
NS_WARN("read_page: flipping bit %d in page %d "
"reading from %d ecc: corrected=%u failed=%u\n",
diff --git a/drivers/mtd/tests/mtd_nandecctest.c b/drivers/mtd/tests/mtd_nandecctest.c
index c4f271314f5264acf7f6c0bfa1475f00619e0074..440988562cfdcb0340fee9fed2cfa471463cdeba 100644
--- a/drivers/mtd/tests/mtd_nandecctest.c
+++ b/drivers/mtd/tests/mtd_nandecctest.c
@@ -47,7 +47,7 @@ struct nand_ecc_test {
static void single_bit_error_data(void *error_data, void *correct_data,
size_t size)
{
- unsigned int offset = prandom_u32() % (size * BITS_PER_BYTE);
+ unsigned int offset = prandom_u32_max(size * BITS_PER_BYTE);
memcpy(error_data, correct_data, size);
__change_bit_le(offset, error_data);
@@ -58,9 +58,9 @@ static void double_bit_error_data(void *error_data, void *correct_data,
{
unsigned int offset[2];
- offset[0] = prandom_u32() % (size * BITS_PER_BYTE);
+ offset[0] = prandom_u32_max(size * BITS_PER_BYTE);
do {
- offset[1] = prandom_u32() % (size * BITS_PER_BYTE);
+ offset[1] = prandom_u32_max(size * BITS_PER_BYTE);
} while (offset[0] == offset[1]);
memcpy(error_data, correct_data, size);
@@ -71,7 +71,7 @@ static void double_bit_error_data(void *error_data, void *correct_data,
static unsigned int random_ecc_bit(size_t size)
{
- unsigned int offset = prandom_u32() % (3 * BITS_PER_BYTE);
+ unsigned int offset = prandom_u32_max(3 * BITS_PER_BYTE);
if (size == 256) {
/*
@@ -79,7 +79,7 @@ static unsigned int random_ecc_bit(size_t size)
* and 17th bit) in ECC code for 256 byte data block
*/
while (offset == 16 || offset == 17)
- offset = prandom_u32() % (3 * BITS_PER_BYTE);
+ offset = prandom_u32_max(3 * BITS_PER_BYTE);
}
return offset;
@@ -266,7 +266,7 @@ static int nand_ecc_test_run(const size_t size)
goto error;
}
- prandom_bytes(correct_data, size);
+ get_random_bytes(correct_data, size);
ecc_sw_hamming_calculate(correct_data, size, correct_ecc, sm_order);
for (i = 0; i < ARRAY_SIZE(nand_ecc_test); i++) {
nand_ecc_test[i].prepare(error_data, error_ecc,
diff --git a/drivers/mtd/tests/speedtest.c b/drivers/mtd/tests/speedtest.c
index c9ec7086bfa1deba599e9db274cfcf01d9e27cfa..075bce32caa51beda6754c1616def1246ed7fb94 100644
--- a/drivers/mtd/tests/speedtest.c
+++ b/drivers/mtd/tests/speedtest.c
@@ -223,7 +223,7 @@ static int __init mtd_speedtest_init(void)
if (!iobuf)
goto out;
- prandom_bytes(iobuf, mtd->erasesize);
+ get_random_bytes(iobuf, mtd->erasesize);
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
diff --git a/drivers/mtd/tests/stresstest.c b/drivers/mtd/tests/stresstest.c
index cb29c8c1b37033f118333121ab13d7abc9eea68c..75b6ddc5dc4dae2202e33b65a79e2a4ac5c0958c 100644
--- a/drivers/mtd/tests/stresstest.c
+++ b/drivers/mtd/tests/stresstest.c
@@ -45,9 +45,8 @@ static int rand_eb(void)
unsigned int eb;
again:
- eb = prandom_u32();
/* Read or write up 2 eraseblocks at a time - hence 'ebcnt - 1' */
- eb %= (ebcnt - 1);
+ eb = prandom_u32_max(ebcnt - 1);
if (bbt[eb])
goto again;
return eb;
@@ -55,20 +54,12 @@ static int rand_eb(void)
static int rand_offs(void)
{
- unsigned int offs;
-
- offs = prandom_u32();
- offs %= bufsize;
- return offs;
+ return prandom_u32_max(bufsize);
}
static int rand_len(int offs)
{
- unsigned int len;
-
- len = prandom_u32();
- len %= (bufsize - offs);
- return len;
+ return prandom_u32_max(bufsize - offs);
}
static int do_read(void)
@@ -127,7 +118,7 @@ static int do_write(void)
static int do_operation(void)
{
- if (prandom_u32() & 1)
+ if (prandom_u32_max(2))
return do_read();
else
return do_write();
@@ -192,7 +183,7 @@ static int __init mtd_stresstest_init(void)
goto out;
for (i = 0; i < ebcnt; i++)
offsets[i] = mtd->erasesize;
- prandom_bytes(writebuf, bufsize);
+ get_random_bytes(writebuf, bufsize);
bbt = kzalloc(ebcnt, GFP_KERNEL);
if (!bbt)
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index 31d427ee191a3805624025389fc55f7e10b6a7fb..908d0e0885574bd7a68e82d4b49372bb908ba7f7 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -590,7 +590,7 @@ int ubi_dbg_power_cut(struct ubi_device *ubi, int caller)
if (ubi->dbg.power_cut_max > ubi->dbg.power_cut_min) {
range = ubi->dbg.power_cut_max - ubi->dbg.power_cut_min;
- ubi->dbg.power_cut_counter += prandom_u32() % range;
+ ubi->dbg.power_cut_counter += prandom_u32_max(range);
}
return 0;
}
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index 118248a5d7d487f005d7b35613e7bb3b88a5918e..dc8d8f83657a0f782c369816074c75f22891f27b 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -73,7 +73,7 @@ static inline int ubi_dbg_is_bgt_disabled(const struct ubi_device *ubi)
static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_bitflips)
- return !(prandom_u32() % 200);
+ return !prandom_u32_max(200);
return 0;
}
@@ -87,7 +87,7 @@ static inline int ubi_dbg_is_bitflip(const struct ubi_device *ubi)
static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !(prandom_u32() % 500);
+ return !prandom_u32_max(500);
return 0;
}
@@ -101,7 +101,7 @@ static inline int ubi_dbg_is_write_failure(const struct ubi_device *ubi)
static inline int ubi_dbg_is_erase_failure(const struct ubi_device *ubi)
{
if (ubi->dbg.emulate_io_failures)
- return !(prandom_u32() % 400);
+ return !prandom_u32_max(400);
return 0;
}
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 24bb50dfd362afaed4cd90e68bebd4bdc04c077b..e84c49bf4d0c37ff2649bd2baaf737bd84303814 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -4806,7 +4806,7 @@ static u32 bond_rr_gen_slave_id(struct bonding *bond)
switch (packets_per_slave) {
case 0:
- slave_id = prandom_u32();
+ slave_id = get_random_u32();
break;
case 1:
slave_id = this_cpu_inc_return(*bond->rr_tx_counter);
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index eed98c10ca9d6e422c926e9e72cdf10fd312ea03..04cf7684f1b0c2630c5984b1f7e9f4d78110aa8e 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -3874,7 +3874,7 @@ static void bnxt_init_vnics(struct bnxt *bp)
if (bp->vnic_info[i].rss_hash_key) {
if (i == 0)
- prandom_bytes(vnic->rss_hash_key,
+ get_random_bytes(vnic->rss_hash_key,
HW_HASH_KEY_SIZE);
else
memcpy(vnic->rss_hash_key,
diff --git a/drivers/net/ethernet/broadcom/cnic.c b/drivers/net/ethernet/broadcom/cnic.c
index e86503d97f32bffc1eb4bc52b710c2b093cf2e89..2198e35d9e18183e96c662a261e17dcc05a193b7 100644
--- a/drivers/net/ethernet/broadcom/cnic.c
+++ b/drivers/net/ethernet/broadcom/cnic.c
@@ -4105,8 +4105,7 @@ static int cnic_cm_alloc_mem(struct cnic_dev *dev)
for (i = 0; i < MAX_CM_SK_TBL_SZ; i++)
atomic_set(&cp->csk_tbl[i].ref_count, 0);
- port_id = prandom_u32();
- port_id %= CNIC_LOCAL_PORT_RANGE;
+ port_id = prandom_u32_max(CNIC_LOCAL_PORT_RANGE);
if (cnic_init_id_tbl(&cp->csk_port_tbl, CNIC_LOCAL_PORT_RANGE,
CNIC_LOCAL_PORT_MIN, port_id)) {
cnic_cm_free_mem(dev);
@@ -4165,7 +4164,7 @@ static int cnic_cm_init_bnx2_hw(struct cnic_dev *dev)
{
u32 seed;
- seed = prandom_u32();
+ seed = get_random_u32();
cnic_ctx_wr(dev, 45, 0, seed);
return 0;
}
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
index f90bfba4b303481dbe116bc2720becc5b0f978b4..c2e7037c7ba1c40bd41e9d6a8d5f252cee761485 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
@@ -1063,7 +1063,7 @@ static void chtls_pass_accept_rpl(struct sk_buff *skb,
opt2 |= WND_SCALE_EN_V(WSCALE_OK(tp));
rpl5->opt0 = cpu_to_be64(opt0);
rpl5->opt2 = cpu_to_be32(opt2);
- rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1);
+ rpl5->iss = cpu_to_be32((get_random_u32() & ~7UL) - 1);
set_wr_txq(skb, CPL_PRIORITY_SETUP, csk->port_id);
t4_set_arp_err_handler(skb, sk, chtls_accept_rpl_arp_failure);
cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
@@ -1466,7 +1466,7 @@ static void make_established(struct sock *sk, u32 snd_isn, unsigned int opt)
tp->write_seq = snd_isn;
tp->snd_nxt = snd_isn;
tp->snd_una = snd_isn;
- inet_sk(sk)->inet_id = prandom_u32();
+ inet_sk(sk)->inet_id = get_random_u16();
assign_rxopt(sk, opt);
if (tp->rcv_wnd > (RCV_BUFSIZ_M << 10))
diff --git a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
index 539992dad8ba3444dc4c68720d7c74882fdf00f4..a4256087ac82867ae00cafdd20f70ccd990aa838 100644
--- a/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
+++ b/drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_io.c
@@ -919,8 +919,8 @@ static int csk_wait_memory(struct chtls_dev *cdev,
current_timeo = *timeo_p;
noblock = (*timeo_p ? false : true);
if (csk_mem_free(cdev, sk)) {
- current_timeo = (prandom_u32() % (HZ / 5)) + 2;
- vm_wait = (prandom_u32() % (HZ / 5)) + 2;
+ current_timeo = prandom_u32_max(HZ / 5) + 2;
+ vm_wait = prandom_u32_max(HZ / 5) + 2;
}
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index 023682cd27687220b3bebd4ffdb67feafcb5e106..9e59669a93dd3988ca6c8198995f95a9886d8cf7 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -129,7 +129,7 @@ static int rocker_reg_test(const struct rocker *rocker)
u64 test_reg;
u64 rnd;
- rnd = prandom_u32();
+ rnd = get_random_u32();
rnd >>= 1;
rocker_write32(rocker, TEST_REG, rnd);
test_reg = rocker_read32(rocker, TEST_REG);
@@ -139,9 +139,9 @@ static int rocker_reg_test(const struct rocker *rocker)
return -EIO;
}
- rnd = prandom_u32();
+ rnd = get_random_u32();
rnd <<= 31;
- rnd |= prandom_u32();
+ rnd |= get_random_u32();
rocker_write64(rocker, TEST_REG64, rnd);
test_reg = rocker_read64(rocker, TEST_REG64);
if (test_reg != rnd * 2) {
@@ -224,7 +224,7 @@ static int rocker_dma_test_offset(const struct rocker *rocker,
if (err)
goto unmap;
- prandom_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
+ get_random_bytes(buf, ROCKER_TEST_DMA_BUF_SIZE);
for (i = 0; i < ROCKER_TEST_DMA_BUF_SIZE; i++)
expect[i] = ~buf[i];
err = rocker_dma_test_one(rocker, wait, ROCKER_TEST_DMA_CTRL_INVERT,
diff --git a/drivers/net/hamradio/baycom_epp.c b/drivers/net/hamradio/baycom_epp.c
index 3e69079ed694b33c9b70fd94747281f647722ef3..791b4a53d69fdf20679780c02bb580bbd78aa3b9 100644
--- a/drivers/net/hamradio/baycom_epp.c
+++ b/drivers/net/hamradio/baycom_epp.c
@@ -438,7 +438,7 @@ static int transmit(struct baycom_state *bc, int cnt, unsigned char stat)
if ((--bc->hdlctx.slotcnt) > 0)
return 0;
bc->hdlctx.slotcnt = bc->ch_params.slottime;
- if ((prandom_u32() % 256) > bc->ch_params.ppersist)
+ if (get_random_u8() > bc->ch_params.ppersist)
return 0;
}
}
diff --git a/drivers/net/hamradio/hdlcdrv.c b/drivers/net/hamradio/hdlcdrv.c
index a6184d6c7b15f291b1e63f3b7ea891ac2930c7fc..2263029d1a20e614b0d08da400285f36af913c3d 100644
--- a/drivers/net/hamradio/hdlcdrv.c
+++ b/drivers/net/hamradio/hdlcdrv.c
@@ -377,7 +377,7 @@ void hdlcdrv_arbitrate(struct net_device *dev, struct hdlcdrv_state *s)
if ((--s->hdlctx.slotcnt) > 0)
return;
s->hdlctx.slotcnt = s->ch_params.slottime;
- if ((prandom_u32() % 256) > s->ch_params.ppersist)
+ if (get_random_u8() > s->ch_params.ppersist)
return;
start_tx(dev, s);
}
diff --git a/drivers/net/hamradio/yam.c b/drivers/net/hamradio/yam.c
index 980f2be32f05a1974c13aba7d44f257901ed8cd6..2ed2f836f09af5a0bf8dbecce1d77e2f48042dc6 100644
--- a/drivers/net/hamradio/yam.c
+++ b/drivers/net/hamradio/yam.c
@@ -626,7 +626,7 @@ static void yam_arbitrate(struct net_device *dev)
yp->slotcnt = yp->slot / 10;
/* is random > persist ? */
- if ((prandom_u32() % 256) > yp->pers)
+ if (get_random_u8() > yp->pers)
return;
yam_start_tx(dev, yp);
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 9e9adde335c834e77c28abd933209a7d090321c9..349b7b1dbbf292fccee52f355d0a194b334f5a07 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -1758,7 +1758,7 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev)
static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev)
{
- u16 seed_value = (prandom_u32() % QCA808X_MASTER_SLAVE_SEED_RANGE);
+ u16 seed_value = prandom_u32_max(QCA808X_MASTER_SLAVE_SEED_RANGE);
return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED,
QCA808X_MASTER_SLAVE_SEED_CFG,
diff --git a/drivers/net/wireguard/selftest/allowedips.c b/drivers/net/wireguard/selftest/allowedips.c
index 41db10f9be4985619b21a0922159ad91f87a803b..19eac00b2381446763f306398399528026a8df23 100644
--- a/drivers/net/wireguard/selftest/allowedips.c
+++ b/drivers/net/wireguard/selftest/allowedips.c
@@ -284,7 +284,7 @@ static __init bool randomized_test(void)
mutex_lock(&mutex);
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
- prandom_bytes(ip, 4);
+ get_random_bytes(ip, 4);
cidr = prandom_u32_max(32) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t, (struct in_addr *)ip, cidr,
@@ -299,7 +299,7 @@ static __init bool randomized_test(void)
}
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 4);
- prandom_bytes(mutate_mask, 4);
+ get_random_bytes(mutate_mask, 4);
mutate_amount = prandom_u32_max(32);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
@@ -310,7 +310,7 @@ static __init bool randomized_test(void)
for (k = 0; k < 4; ++k)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
- prandom_u32_max(256));
+ get_random_u8());
cidr = prandom_u32_max(32) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v4(&t,
@@ -328,7 +328,7 @@ static __init bool randomized_test(void)
}
for (i = 0; i < NUM_RAND_ROUTES; ++i) {
- prandom_bytes(ip, 16);
+ get_random_bytes(ip, 16);
cidr = prandom_u32_max(128) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t, (struct in6_addr *)ip, cidr,
@@ -343,7 +343,7 @@ static __init bool randomized_test(void)
}
for (j = 0; j < NUM_MUTATED_ROUTES; ++j) {
memcpy(mutated, ip, 16);
- prandom_bytes(mutate_mask, 16);
+ get_random_bytes(mutate_mask, 16);
mutate_amount = prandom_u32_max(128);
for (k = 0; k < mutate_amount / 8; ++k)
mutate_mask[k] = 0xff;
@@ -354,7 +354,7 @@ static __init bool randomized_test(void)
for (k = 0; k < 4; ++k)
mutated[k] = (mutated[k] & mutate_mask[k]) |
(~mutate_mask[k] &
- prandom_u32_max(256));
+ get_random_u8());
cidr = prandom_u32_max(128) + 1;
peer = peers[prandom_u32_max(NUM_PEERS)];
if (wg_allowedips_insert_v6(&t,
@@ -381,13 +381,13 @@ static __init bool randomized_test(void)
for (j = 0;; ++j) {
for (i = 0; i < NUM_QUERIES; ++i) {
- prandom_bytes(ip, 4);
+ get_random_bytes(ip, 4);
if (lookup(t.root4, 32, ip) != horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip)) {
horrible_allowedips_lookup_v4(&h, (struct in_addr *)ip);
pr_err("allowedips random v4 self-test: FAIL\n");
goto free;
}
- prandom_bytes(ip, 16);
+ get_random_bytes(ip, 16);
if (lookup(t.root6, 128, ip) != horrible_allowedips_lookup_v6(&h, (struct in6_addr *)ip)) {
pr_err("allowedips random v6 self-test: FAIL\n");
goto free;
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
index 479041f070f98b3ca646577ffa8d2a7a3da62eee..10d9d9c63b2811106e5a7dd967fac22fee57b166 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
@@ -1128,7 +1128,7 @@ static void brcmf_p2p_afx_handler(struct work_struct *work)
if (afx_hdl->is_listen && afx_hdl->my_listen_chan)
/* 100ms ~ 300ms */
err = brcmf_p2p_discover_listen(p2p, afx_hdl->my_listen_chan,
- 100 * (1 + prandom_u32() % 3));
+ 100 * (1 + prandom_u32_max(3)));
else
err = brcmf_p2p_act_frm_search(p2p, afx_hdl->peer_listen_chan);
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
index d0a7465be586dc899bfa581163825c836fd10d50..170c61c8136cc1c0b97afe42d7adfff878e3e926 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pno.c
@@ -177,7 +177,7 @@ static int brcmf_pno_set_random(struct brcmf_if *ifp, struct brcmf_pno_info *pi)
memcpy(pfn_mac.mac, mac_addr, ETH_ALEN);
for (i = 0; i < ETH_ALEN; i++) {
pfn_mac.mac[i] &= mac_mask[i];
- pfn_mac.mac[i] |= get_random_int() & ~(mac_mask[i]);
+ pfn_mac.mac[i] |= get_random_u8() & ~(mac_mask[i]);
}
/* Clear multi bit */
pfn_mac.mac[0] &= 0xFE;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
index ed586e6d7d64b2bf5dfc158f085c2c6596e760af..de0c545d50fd5935eb0a0e6faca315791b67e2d3 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac-ctxt.c
@@ -1099,7 +1099,7 @@ static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm,
iwl_mvm_mac_ap_iterator, &data);
if (data.beacon_device_ts) {
- u32 rand = (prandom_u32() % (64 - 36)) + 36;
+ u32 rand = prandom_u32_max(64 - 36) + 36;
mvmvif->ap_beacon_time = data.beacon_device_ts +
ieee80211_tu_to_usec(data.beacon_int * rand /
100);
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 535995e8279f4ad2e82bbcb72a59d6a86d689dca..bcd564dc3554a80c8a37ab18abd31d24c0cbdbe0 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -239,7 +239,7 @@ mwifiex_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
tx_info->pkt_len = pkt_len;
mwifiex_form_mgmt_frame(skb, buf, len);
- *cookie = prandom_u32() | 1;
+ *cookie = get_random_u32() | 1;
if (ieee80211_is_action(mgmt->frame_control))
skb = mwifiex_clone_skb_for_tx_status(priv,
@@ -303,7 +303,7 @@ mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
duration);
if (!ret) {
- *cookie = prandom_u32() | 1;
+ *cookie = get_random_u32() | 1;
priv->roc_cfg.cookie = *cookie;
priv->roc_cfg.chan = *chan;
diff --git a/drivers/net/wireless/microchip/wilc1000/cfg80211.c b/drivers/net/wireless/microchip/wilc1000/cfg80211.c
index b89047965e78eb5cc24526eead93972b7f096939..9bbfff803357859de5004c797e4ef83e073c50fc 100644
--- a/drivers/net/wireless/microchip/wilc1000/cfg80211.c
+++ b/drivers/net/wireless/microchip/wilc1000/cfg80211.c
@@ -1161,7 +1161,7 @@ static int mgmt_tx(struct wiphy *wiphy,
const u8 *vendor_ie;
int ret = 0;
- *cookie = prandom_u32();
+ *cookie = get_random_u32();
priv->tx_cookie = *cookie;
mgmt = (const struct ieee80211_mgmt *)buf;
diff --git a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
index bfdf03bfa6c57a6bf3a8ebc3c0b02045247d4602..73e6f9408b515091e8f78329daec665070abc27a 100644
--- a/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
+++ b/drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
@@ -449,7 +449,7 @@ qtnf_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
{
struct qtnf_vif *vif = qtnf_netdev_get_priv(wdev->netdev);
const struct ieee80211_mgmt *mgmt_frame = (void *)params->buf;
- u32 short_cookie = prandom_u32();
+ u32 short_cookie = get_random_u32();
u16 flags = 0;
u16 freq;
diff --git a/drivers/net/wireless/st/cw1200/wsm.c b/drivers/net/wireless/st/cw1200/wsm.c
index 5a3e7a626702d82670e53530e4f12777cd907dec..4a9e4b5d3547a2436c8cc7d80cb4ce7265aafda6 100644
--- a/drivers/net/wireless/st/cw1200/wsm.c
+++ b/drivers/net/wireless/st/cw1200/wsm.c
@@ -1594,7 +1594,7 @@ static int cw1200_get_prio_queue(struct cw1200_common *priv,
edca = &priv->edca.params[i];
score = ((edca->aifns + edca->cwmin) << 16) +
((edca->cwmax - edca->cwmin) *
- (get_random_int() & 0xFFFF));
+ get_random_u16());
if (score < best && (winner < 0 || i != 3)) {
best = score;
winner = i;
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 3e3922d4c78801d6b50fd2ea538791e0cf0df398..28c0f06e311f75fb1739f0c81b6aa8aae978ef62 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -6100,7 +6100,7 @@ static int wl1271_register_hw(struct wl1271 *wl)
wl1271_warning("Fuse mac address is zero. using random mac");
/* Use TI oui and a random nic */
oui_addr = WLCORE_TI_OUI_ADDRESS;
- nic_addr = get_random_int();
+ nic_addr = get_random_u32();
} else {
oui_addr = wl->fuse_oui_addr;
/* fuse has the BD_ADDR, the WLAN addresses are the next two */
diff --git a/drivers/nvme/common/auth.c b/drivers/nvme/common/auth.c
index 04bd28f17dccea86d7e41ce4613beee1c268a191..d90e4f0c08b7b90201e745663d658afd61b21d57 100644
--- a/drivers/nvme/common/auth.c
+++ b/drivers/nvme/common/auth.c
@@ -23,7 +23,7 @@ u32 nvme_auth_get_seqnum(void)
mutex_lock(&nvme_dhchap_mutex);
if (!nvme_dhchap_seqnum)
- nvme_dhchap_seqnum = prandom_u32();
+ nvme_dhchap_seqnum = get_random_u32();
else {
nvme_dhchap_seqnum++;
if (!nvme_dhchap_seqnum)
diff --git a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
index 53d91bf9c12a89e0a9b4f2705a248515d2c82868..c07d2e3b4bcff71d41f43eac18596824ecef2ada 100644
--- a/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
+++ b/drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
@@ -254,7 +254,7 @@ static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
} else if (is_t5(lldi->adapter_type)) {
struct cpl_t5_act_open_req *req =
(struct cpl_t5_act_open_req *)skb->head;
- u32 isn = (prandom_u32() & ~7UL) - 1;
+ u32 isn = (get_random_u32() & ~7UL) - 1;
INIT_TP_WR(req, 0);
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
@@ -282,7 +282,7 @@ static void send_act_open_req(struct cxgbi_sock *csk, struct sk_buff *skb,
} else {
struct cpl_t6_act_open_req *req =
(struct cpl_t6_act_open_req *)skb->head;
- u32 isn = (prandom_u32() & ~7UL) - 1;
+ u32 isn = (get_random_u32() & ~7UL) - 1;
INIT_TP_WR(req, 0);
OPCODE_TID(req) = cpu_to_be32(MK_OPCODE_TID(CPL_ACT_OPEN_REQ,
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index 39e16eab47aad4d4671ec7dbf58628435d267dbf..ddc048069af25aeac8680512e4bae041bfef9c2b 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -2233,7 +2233,7 @@ static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
fip->probe_tries++;
- wait = prandom_u32() % FIP_VN_PROBE_WAIT;
+ wait = prandom_u32_max(FIP_VN_PROBE_WAIT);
} else
wait = FIP_VN_RLIM_INT;
mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
@@ -3125,7 +3125,7 @@ static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
fcoe_all_vn2vn, 0);
fip->port_ka_time = jiffies +
msecs_to_jiffies(FIP_VN_BEACON_INT +
- (prandom_u32() % FIP_VN_BEACON_FUZZ));
+ prandom_u32_max(FIP_VN_BEACON_FUZZ));
}
if (time_before(fip->port_ka_time, next_time))
next_time = fip->port_ka_time;
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index c7f834ba8edbbb50f4b4a0fddd09c0bedb75378f..d38ebd7281b9b96f4485b58aa8af808d91d5f8a1 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -2156,8 +2156,8 @@ lpfc_check_pending_fcoe_event(struct lpfc_hba *phba, uint8_t unreg_fcf)
* This function makes an running random selection decision on FCF record to
* use through a sequence of @fcf_cnt eligible FCF records with equal
* probability. To perform integer manunipulation of random numbers with
- * size unit32_t, the lower 16 bits of the 32-bit random number returned
- * from prandom_u32() are taken as the random random number generated.
+ * size unit32_t, a 16-bit random number returned from get_random_u16() is
+ * taken as the random random number generated.
*
* Returns true when outcome is for the newly read FCF record should be
* chosen; otherwise, return false when outcome is for keeping the previously
@@ -2169,7 +2169,7 @@ lpfc_sli4_new_fcf_random_select(struct lpfc_hba *phba, uint32_t fcf_cnt)
uint32_t rand_num;
/* Get 16-bit uniform random number */
- rand_num = 0xFFFF & prandom_u32();
+ rand_num = get_random_u16();
/* Decision with probability 1/fcf_cnt */
if ((fcf_cnt * rand_num) < 0xFFFF)
diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index cecfb2cb4c7beb87cc61d8519c20be53753fa2c9..df2fe7bd26d1b72b0ecd622038c6afe73e29d327 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -618,7 +618,7 @@ static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
sizeof(struct qedi_endpoint *)), GFP_KERNEL);
if (!qedi->ep_tbl)
return -ENOMEM;
- port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
+ port_id = prandom_u32_max(QEDI_LOCAL_PORT_RANGE);
if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
QEDI_LOCAL_PORT_MIN, port_id)) {
qedi_cm_free_mem(qedi);
diff --git a/drivers/target/iscsi/cxgbit/cxgbit_cm.c b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
index 3336d2b78bf77e51e792dec7838df7ba0f92b7d4..d9204c590d9aba62b34f3ee3f536852c2ac9c089 100644
--- a/drivers/target/iscsi/cxgbit/cxgbit_cm.c
+++ b/drivers/target/iscsi/cxgbit/cxgbit_cm.c
@@ -1202,7 +1202,7 @@ cxgbit_pass_accept_rpl(struct cxgbit_sock *csk, struct cpl_pass_accept_req *req)
opt2 |= CONG_CNTRL_V(CONG_ALG_NEWRENO);
opt2 |= T5_ISS_F;
- rpl5->iss = cpu_to_be32((prandom_u32() & ~7UL) - 1);
+ rpl5->iss = cpu_to_be32((get_random_u32() & ~7UL) - 1);
opt2 |= T5_OPT_2_VALID_F;
diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index bbb248a2686fb2a5592402dce9a83ae3f411f885..f00b2f62d8e3c92841ba8bb6276d583724e7c31d 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -2437,7 +2437,7 @@ int tb_xdomain_init(void)
tb_property_add_immediate(xdomain_property_dir, "deviceid", 0x1);
tb_property_add_immediate(xdomain_property_dir, "devicerv", 0x80000100);
- xdomain_property_block_gen = prandom_u32();
+ xdomain_property_block_gen = get_random_u32();
return 0;
}
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index fd5d701106e1d5226985a27e172086b35b9dd49d..00d789b6c0faf022ec824d3db9685893867afe6f 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -167,7 +167,7 @@ static int uvesafb_exec(struct uvesafb_ktask *task)
memcpy(&m->id, &uvesafb_cn_id, sizeof(m->id));
m->seq = seq;
m->len = len;
- m->ack = prandom_u32();
+ m->ack = get_random_u32();
/* uvesafb_task structure */
memcpy(m + 1, &task->t, sizeof(task->t));
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 9ebb7cee7978977f79a13ebb49bf6719a67adef8..4af5e55abc1586748882e54e3da3660d8444aaab 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -362,7 +362,7 @@ static int ceph_fill_fragtree(struct inode *inode,
if (nsplits != ci->i_fragtree_nsplits) {
update = true;
} else if (nsplits) {
- i = prandom_u32() % nsplits;
+ i = prandom_u32_max(nsplits);
id = le32_to_cpu(fragtree->splits[i].frag);
if (!__ceph_find_frag(ci, id))
update = true;
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 8d0a6d2c2da4332c007fc0386d8912a5fda29c65..3fbabc98e1f702a90ea75ce6d4f7c5f9fb7b4a16 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -29,7 +29,7 @@ static int __mdsmap_get_random_mds(struct ceph_mdsmap *m, bool ignore_laggy)
return -1;
/* pick */
- n = prandom_u32() % n;
+ n = prandom_u32_max(n);
for (j = 0, i = 0; i < m->possible_max_rank; i++) {
if (CEPH_MDS_IS_READY(i, ignore_laggy))
j++;
diff --git a/fs/exfat/inode.c b/fs/exfat/inode.c
index a795437b86d0670adb4d58e854296e474d313647..5590a1e83126c99a2957af22af99a9d28b9747fb 100644
--- a/fs/exfat/inode.c
+++ b/fs/exfat/inode.c
@@ -552,7 +552,7 @@ static int exfat_fill_inode(struct inode *inode, struct exfat_dir_entry *info)
inode->i_uid = sbi->options.fs_uid;
inode->i_gid = sbi->options.fs_gid;
inode_inc_iversion(inode);
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
if (info->attr & ATTR_SUBDIR) { /* directory */
inode->i_generation &= ~1;
diff --git a/fs/ext2/ialloc.c b/fs/ext2/ialloc.c
index 998dd2ac8008966f10995824fb8e91cb5d47c995..f4944c4dee607f2597f7c258868ebad604f509c6 100644
--- a/fs/ext2/ialloc.c
+++ b/fs/ext2/ialloc.c
@@ -277,8 +277,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
int best_ndir = inodes_per_group;
int best_group = -1;
- group = prandom_u32();
- parent_group = (unsigned)group % ngroups;
+ parent_group = prandom_u32_max(ngroups);
for (i = 0; i < ngroups; i++) {
group = (parent_group + i) % ngroups;
desc = ext2_get_group_desc (sb, group, NULL);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 208b87ce885889fa6c0ec83c59e061ed36a87b41..e9bc46684106b5cb2c3922711f6008584535f882 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -463,10 +463,9 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
hinfo.hash_version = DX_HASH_HALF_MD4;
hinfo.seed = sbi->s_hash_seed;
ext4fs_dirhash(parent, qstr->name, qstr->len, &hinfo);
- grp = hinfo.hash;
+ parent_group = hinfo.hash % ngroups;
} else
- grp = prandom_u32();
- parent_group = (unsigned)grp % ngroups;
+ parent_group = prandom_u32_max(ngroups);
for (i = 0; i < ngroups; i++) {
g = (parent_group + i) % ngroups;
get_orlov_stats(sb, g, flex_size, &stats);
@@ -1280,7 +1279,7 @@ struct inode *__ext4_new_inode(struct user_namespace *mnt_userns,
EXT4_GROUP_INFO_IBITMAP_CORRUPT);
goto out;
}
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
/* Precompute checksum seed for inode metadata */
if (ext4_has_metadata_csum(sb)) {
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 4d49c5cfb690f24dbefedeb5e963cb5c59fad074..ded535535b27bc394a56e4d6b9d2fd52e5839812 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -454,8 +454,8 @@ static long swap_inode_boot_loader(struct super_block *sb,
inode->i_ctime = inode_bl->i_ctime = current_time(inode);
inode_inc_iversion(inode);
- inode->i_generation = prandom_u32();
- inode_bl->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
+ inode_bl->i_generation = get_random_u32();
ext4_reset_inode_seed(inode);
ext4_reset_inode_seed(inode_bl);
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 9af68a7ecdcf3aa8c12ee793902a0d27c17a4bf8..588cb09c5291fcd1f0ea6d087634df097b4d8637 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -265,7 +265,7 @@ static unsigned int mmp_new_seq(void)
u32 new_seq;
do {
- new_seq = prandom_u32();
+ new_seq = get_random_u32();
} while (new_seq > EXT4_MMP_SEQ_MAX);
return new_seq;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index d733db8a0b026258b590219b8e9cc76f4ffffe9a..989365b878a67f5271176bd40f5a9cf97fd17224 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3782,8 +3782,7 @@ static int ext4_lazyinit_thread(void *arg)
}
if (!progress) {
elr->lr_next_sched = jiffies +
- (prandom_u32()
- % (EXT4_DEF_LI_MAX_START_DELAY * HZ));
+ prandom_u32_max(EXT4_DEF_LI_MAX_START_DELAY * HZ);
}
if (time_before(elr->lr_next_sched, next_wakeup))
next_wakeup = elr->lr_next_sched;
@@ -3930,8 +3929,8 @@ static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
* spread the inode table initialization requests
* better.
*/
- elr->lr_next_sched = jiffies + (prandom_u32() %
- (EXT4_DEF_LI_MAX_START_DELAY * HZ));
+ elr->lr_next_sched = jiffies + prandom_u32_max(
+ EXT4_DEF_LI_MAX_START_DELAY * HZ);
return elr;
}
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index d36bcb23ccfec78e651df64fe3f199dad56c7941..4546e01b2ee082a9eca2a02e4f87d380e274bf40 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -282,7 +282,7 @@ static void select_policy(struct f2fs_sb_info *sbi, int gc_type,
/* let's select beginning hot/small space first in no_heap mode*/
if (f2fs_need_rand_seg(sbi))
- p->offset = prandom_u32() % (MAIN_SECS(sbi) * sbi->segs_per_sec);
+ p->offset = prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
else if (test_opt(sbi, NOHEAP) &&
(type == CURSEG_HOT_DATA || IS_NODESEG(type)))
p->offset = 0;
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index d5065a5af1f8a845fc833b89fc74e812e8a7e011..a389772fd212acb93aa2b65e55090ddfd2b8d042 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -50,7 +50,7 @@ static struct inode *f2fs_new_inode(struct user_namespace *mnt_userns,
inode->i_blocks = 0;
inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode);
F2FS_I(inode)->i_crtime = inode->i_mtime;
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
if (S_ISDIR(inode->i_mode))
F2FS_I(inode)->i_current_depth = 1;
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 289bcb7ca30095bec8ca4a8283a6d23678e2b080..acf3d3fa4363578fac53964314361f4c97ac1a52 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -2534,7 +2534,7 @@ static unsigned int __get_next_segno(struct f2fs_sb_info *sbi, int type)
sanity_check_seg_type(sbi, seg_type);
if (f2fs_need_rand_seg(sbi))
- return prandom_u32() % (MAIN_SECS(sbi) * sbi->segs_per_sec);
+ return prandom_u32_max(MAIN_SECS(sbi) * sbi->segs_per_sec);
/* if segs_per_sec is large than 1, we need to keep original policy. */
if (__is_large_section(sbi))
@@ -2588,7 +2588,7 @@ static void new_curseg(struct f2fs_sb_info *sbi, int type, bool new_sec)
curseg->alloc_type = LFS;
if (F2FS_OPTION(sbi).fs_mode == FS_MODE_FRAGMENT_BLK)
curseg->fragment_remained_chunk =
- prandom_u32() % sbi->max_fragment_chunk + 1;
+ prandom_u32_max(sbi->max_fragment_chunk) + 1;
}
static int __next_free_blkoff(struct f2fs_sb_info *sbi,
@@ -2625,9 +2625,9 @@ static void __refresh_next_blkoff(struct f2fs_sb_info *sbi,
/* To allocate block chunks in different sizes, use random number */
if (--seg->fragment_remained_chunk <= 0) {
seg->fragment_remained_chunk =
- prandom_u32() % sbi->max_fragment_chunk + 1;
+ prandom_u32_max(sbi->max_fragment_chunk) + 1;
seg->next_blkoff +=
- prandom_u32() % sbi->max_fragment_hole + 1;
+ prandom_u32_max(sbi->max_fragment_hole) + 1;
}
}
}
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index a38238d75c08ed1b415efd7b1de3061cf3bbde22..1cbcc4608dc78f02c9cb8e7919a0f43a214b2f73 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -523,7 +523,7 @@ int fat_fill_inode(struct inode *inode, struct msdos_dir_entry *de)
inode->i_uid = sbi->options.fs_uid;
inode->i_gid = sbi->options.fs_gid;
inode_inc_iversion(inode);
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
if ((de->attr & ATTR_DIR) && !IS_FREE(de->name)) {
inode->i_generation &= ~1;
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 198d7abf34e45151a08378518a3abe38e7937b65..4e718500a00c4a1436685abc22760385fbc8e8db 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4375,8 +4375,8 @@ nfsd4_init_leases_net(struct nfsd_net *nn)
nn->nfsd4_grace = 90;
nn->somebody_reclaimed = false;
nn->track_reclaim_completes = false;
- nn->clverifier_counter = prandom_u32();
- nn->clientid_base = prandom_u32();
+ nn->clverifier_counter = get_random_u32();
+ nn->clientid_base = get_random_u32();
nn->clientid_counter = nn->clientid_base + 1;
nn->s2s_cp_cl_id = nn->clientid_counter++;
diff --git a/fs/ntfs3/fslog.c b/fs/ntfs3/fslog.c
index e7c494005122c00baf6d48361e1cc85b47d49720..0d611a6c5511f6996372c3cae176f8e0dad85e04 100644
--- a/fs/ntfs3/fslog.c
+++ b/fs/ntfs3/fslog.c
@@ -3819,7 +3819,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
}
log_init_pg_hdr(log, page_size, page_size, 1, 1);
- log_create(log, l_size, 0, get_random_int(), false, false);
+ log_create(log, l_size, 0, get_random_u32(), false, false);
log->ra = ra;
@@ -3893,7 +3893,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
/* Do some checks based on whether we have a valid log page. */
if (!rst_info.valid_page) {
- open_log_count = get_random_int();
+ open_log_count = get_random_u32();
goto init_log_instance;
}
open_log_count = le32_to_cpu(ra2->open_log_count);
@@ -4044,7 +4044,7 @@ int log_replay(struct ntfs_inode *ni, bool *initialized)
memcpy(ra->clients, Add2Ptr(ra2, t16),
le16_to_cpu(ra2->ra_len) - t16);
- log->current_openlog_count = get_random_int();
+ log->current_openlog_count = get_random_u32();
ra->open_log_count = cpu_to_le32(log->current_openlog_count);
log->ra_size = offsetof(struct RESTART_AREA, clients) +
sizeof(struct CLIENT_REC);
diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c
index fc718f6178f2553621fa7ed296b08ad23e8fa7cb..3f128b9fdfbb23bd3dd93ea37d54702c59850b0c 100644
--- a/fs/ubifs/debug.c
+++ b/fs/ubifs/debug.c
@@ -2467,7 +2467,7 @@ int dbg_check_nondata_nodes_order(struct ubifs_info *c, struct list_head *head)
static inline int chance(unsigned int n, unsigned int out_of)
{
- return !!((prandom_u32() % out_of) + 1 <= n);
+ return !!(prandom_u32_max(out_of) + 1 <= n);
}
@@ -2485,13 +2485,13 @@ static int power_cut_emulated(struct ubifs_info *c, int lnum, int write)
if (chance(1, 2)) {
d->pc_delay = 1;
/* Fail within 1 minute */
- delay = prandom_u32() % 60000;
+ delay = prandom_u32_max(60000);
d->pc_timeout = jiffies;
d->pc_timeout += msecs_to_jiffies(delay);
ubifs_warn(c, "failing after %lums", delay);
} else {
d->pc_delay = 2;
- delay = prandom_u32() % 10000;
+ delay = prandom_u32_max(10000);
/* Fail within 10000 operations */
d->pc_cnt_max = delay;
ubifs_warn(c, "failing after %lu calls", delay);
@@ -2571,7 +2571,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf,
unsigned int from, to, ffs = chance(1, 2);
unsigned char *p = (void *)buf;
- from = prandom_u32() % len;
+ from = prandom_u32_max(len);
/* Corruption span max to end of write unit */
to = min(len, ALIGN(from + 1, c->max_write_size));
@@ -2581,7 +2581,7 @@ static int corrupt_data(const struct ubifs_info *c, const void *buf,
if (ffs)
memset(p + from, 0xFF, to - from);
else
- prandom_bytes(p + from, to - from);
+ get_random_bytes(p + from, to - from);
return to;
}
diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c
index 2b1d7c4297bf2f3631d87609d3f54530e4f947c5..d02509920bafadd9897c3c4fece885d3bc1efed9 100644
--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -503,7 +503,7 @@ static void mark_inode_clean(struct ubifs_info *c, struct ubifs_inode *ui)
static void set_dent_cookie(struct ubifs_info *c, struct ubifs_dent_node *dent)
{
if (c->double_hash)
- dent->cookie = (__force __le32) prandom_u32();
+ dent->cookie = (__force __le32) get_random_u32();
else
dent->cookie = 0;
}
diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c
index d76a19e460cd421b863760dfabfa6b4bc0329c9b..cfbc31f709f4b19c53c8c0a413b58f1b1b0a3c5b 100644
--- a/fs/ubifs/lpt_commit.c
+++ b/fs/ubifs/lpt_commit.c
@@ -1970,28 +1970,28 @@ static int dbg_populate_lsave(struct ubifs_info *c)
if (!dbg_is_chk_gen(c))
return 0;
- if (prandom_u32() & 3)
+ if (prandom_u32_max(4))
return 0;
for (i = 0; i < c->lsave_cnt; i++)
c->lsave[i] = c->main_first;
list_for_each_entry(lprops, &c->empty_list, list)
- c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->freeable_list, list)
- c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
list_for_each_entry(lprops, &c->frdi_idx_list, list)
- c->lsave[prandom_u32() % c->lsave_cnt] = lprops->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = lprops->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY_IDX - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_DIRTY - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
heap = &c->lpt_heap[LPROPS_FREE - 1];
for (i = 0; i < heap->cnt; i++)
- c->lsave[prandom_u32() % c->lsave_cnt] = heap->arr[i]->lnum;
+ c->lsave[prandom_u32_max(c->lsave_cnt)] = heap->arr[i]->lnum;
return 1;
}
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 58c92c96ecef251619ff13e6bbf32931f5f165ec..01362ad5f804ae67b73fba3953695ef52525e2f9 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -700,7 +700,7 @@ static int alloc_idx_lebs(struct ubifs_info *c, int cnt)
c->ilebs[c->ileb_cnt++] = lnum;
dbg_cmt("LEB %d", lnum);
}
- if (dbg_is_chk_index(c) && !(prandom_u32() & 7))
+ if (dbg_is_chk_index(c) && !prandom_u32_max(8))
return -ENOSPC;
return 0;
}
diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index e2bdf089c0a31eccc23da94ef68a6b7a2193b605..6261599bb389af955f4dc16fe63b36d1cdf0d8c7 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -1520,7 +1520,7 @@ xfs_alloc_ag_vextent_lastblock(
#ifdef DEBUG
/* Randomly don't execute the first algorithm. */
- if (prandom_u32() & 1)
+ if (prandom_u32_max(2))
return 0;
#endif
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 6cdfd64bc56bdd2132721a38edf5c16a7e9fc64a..94db50eb706ac5e560a65e001142f40442dbd932 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -636,7 +636,7 @@ xfs_ialloc_ag_alloc(
/* randomly do sparse inode allocations */
if (xfs_has_sparseinodes(tp->t_mountp) &&
igeo->ialloc_min_blks < igeo->ialloc_blks)
- do_sparse = prandom_u32() & 1;
+ do_sparse = prandom_u32_max(2);
#endif
/*
@@ -805,7 +805,7 @@ xfs_ialloc_ag_alloc(
* number from being easily guessable.
*/
error = xfs_ialloc_inode_init(args.mp, tp, NULL, newlen, pag->pag_agno,
- args.agbno, args.len, prandom_u32());
+ args.agbno, args.len, get_random_u32());
if (error)
return error;
diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 296faa41d81d51ee4d0ebdad3fefbf5d671f92ec..7db588ed0be597b9329e856a726795a1d1da6893 100644
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -274,7 +274,7 @@ xfs_errortag_test(
ASSERT(error_tag < XFS_ERRTAG_MAX);
randfactor = mp->m_errortag[error_tag];
- if (!randfactor || prandom_u32() % randfactor)
+ if (!randfactor || prandom_u32_max(randfactor))
return false;
xfs_warn_ratelimited(mp,
diff --git a/fs/xfs/xfs_icache.c b/fs/xfs/xfs_icache.c
index 2bbe7916a998d7efbc52aea8b9d90efc897035ed..eae7427062cf9a9448940a84ea4403d76b93fc39 100644
--- a/fs/xfs/xfs_icache.c
+++ b/fs/xfs/xfs_icache.c
@@ -596,7 +596,7 @@ xfs_iget_cache_miss(
*/
if (xfs_has_v3inodes(mp) &&
(flags & XFS_IGET_CREATE) && !xfs_has_ikeep(mp)) {
- VFS_I(ip)->i_generation = prandom_u32();
+ VFS_I(ip)->i_generation = get_random_u32();
} else {
struct xfs_buf *bp;
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index f6e7e4fd72ae71da2fbe548cce0bad11b6f197b9..f02a0dd522b3df1316df282e168c6d429792e5d2 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -3544,7 +3544,7 @@ xlog_ticket_alloc(
tic->t_curr_res = unit_res;
tic->t_cnt = cnt;
tic->t_ocnt = cnt;
- tic->t_tid = prandom_u32();
+ tic->t_tid = get_random_u32();
if (permanent)
tic->t_flags |= XLOG_TIC_PERM_RESERV;
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 378956c93c94711276b3678c37f10953099a94d8..efef68c9352a0001f9e037dea139d23d80afd269 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -516,7 +516,7 @@ static inline int node_random(const nodemask_t *maskp)
bit = first_node(*maskp);
break;
default:
- bit = find_nth_bit(maskp->bits, MAX_NUMNODES, get_random_int() % w);
+ bit = find_nth_bit(maskp->bits, MAX_NUMNODES, prandom_u32_max(w));
break;
}
return bit;
diff --git a/include/linux/prandom.h b/include/linux/prandom.h
index 78db003bc290bfd694240e2b4e5f84aacf8e4366..e0a0759dd09c0984482a9f0d208bab874e978dd2 100644
--- a/include/linux/prandom.h
+++ b/include/linux/prandom.h
@@ -12,18 +12,6 @@
#include <linux/percpu.h>
#include <linux/random.h>
-/* Deprecated: use get_random_u32 instead. */
-static inline u32 prandom_u32(void)
-{
- return get_random_u32();
-}
-
-/* Deprecated: use get_random_bytes instead. */
-static inline void prandom_bytes(void *buf, size_t nbytes)
-{
- return get_random_bytes(buf, nbytes);
-}
-
struct rnd_state {
__u32 s1, s2, s3, s4;
};
diff --git a/include/linux/random.h b/include/linux/random.h
index 08322f700cdcc731a1218ce1ebd0844c9634261e..147a5e0d0b8ed244bf839c5ccfadb0b9352c8be7 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -42,10 +42,6 @@ u8 get_random_u8(void);
u16 get_random_u16(void);
u32 get_random_u32(void);
u64 get_random_u64(void);
-static inline unsigned int get_random_int(void)
-{
- return get_random_u32();
-}
static inline unsigned long get_random_long(void)
{
#if BITS_PER_LONG == 64
@@ -100,7 +96,6 @@ declare_get_random_var_wait(u8, u8)
declare_get_random_var_wait(u16, u16)
declare_get_random_var_wait(u32, u32)
declare_get_random_var_wait(u64, u32)
-declare_get_random_var_wait(int, unsigned int)
declare_get_random_var_wait(long, unsigned long)
#undef declare_get_random_var
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
index 980daa6e1e3aa42d42be855630614afb65a5acd9..c81021ab07aa17e527d644998ab8ebba70eaf7b1 100644
--- a/include/net/netfilter/nf_queue.h
+++ b/include/net/netfilter/nf_queue.h
@@ -43,7 +43,7 @@ void nf_queue_entry_free(struct nf_queue_entry *entry);
static inline void init_hashrandom(u32 *jhash_initval)
{
while (*jhash_initval == 0)
- *jhash_initval = prandom_u32();
+ *jhash_initval = get_random_u32();
}
static inline u32 hash_v4(const struct iphdr *iph, u32 initval)
diff --git a/include/net/red.h b/include/net/red.h
index 454ac2b65d8ca1f2e8aaf318ea9190594e43fb31..425364de0df7913cdd6361a0eb8d18b418372787 100644
--- a/include/net/red.h
+++ b/include/net/red.h
@@ -363,7 +363,7 @@ static inline unsigned long red_calc_qavg(const struct red_parms *p,
static inline u32 red_random(const struct red_parms *p)
{
- return reciprocal_divide(prandom_u32(), p->max_P_reciprocal);
+ return reciprocal_divide(get_random_u32(), p->max_P_reciprocal);
}
static inline int red_mark_probability(const struct red_parms *p,
diff --git a/include/net/sock.h b/include/net/sock.h
index 08038a385ef21ee376b73fbb597ea0c9ce192e8c..9e464f6409a7175cef5f8ec22e70cade19df5e60 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -2109,7 +2109,7 @@ static inline kuid_t sock_net_uid(const struct net *net, const struct sock *sk)
static inline u32 net_tx_rndhash(void)
{
- u32 v = prandom_u32();
+ u32 v = get_random_u32();
return v ?: 1;
}
diff --git a/kernel/bpf/bloom_filter.c b/kernel/bpf/bloom_filter.c
index b9ea539a556141034397bed047f7a3c9fdfeef0d..48ee750849f25772ebe7f5cc325be53c509b33b0 100644
--- a/kernel/bpf/bloom_filter.c
+++ b/kernel/bpf/bloom_filter.c
@@ -158,7 +158,7 @@ static struct bpf_map *bloom_map_alloc(union bpf_attr *attr)
attr->value_size / sizeof(u32);
if (!(attr->map_flags & BPF_F_ZERO_SEED))
- bloom->hash_seed = get_random_int();
+ bloom->hash_seed = get_random_u32();
return &bloom->map;
}
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 59cf4dc728a55c427213d34546f1ce5a0ebd3d66..25a54e04560e5370635bd31dd007db754ecfae46 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -1032,7 +1032,7 @@ bpf_jit_binary_alloc(unsigned int proglen, u8 **image_ptr,
hdr->size = size;
hole = min_t(unsigned int, size - (proglen + sizeof(*hdr)),
PAGE_SIZE - sizeof(*hdr));
- start = (get_random_int() % hole) & ~(alignment - 1);
+ start = prandom_u32_max(hole) & ~(alignment - 1);
/* Leave a random number of instructions before BPF code. */
*image_ptr = &hdr->image[start];
@@ -1094,7 +1094,7 @@ bpf_jit_binary_pack_alloc(unsigned int proglen, u8 **image_ptr,
hole = min_t(unsigned int, size - (proglen + sizeof(*ro_header)),
BPF_PROG_CHUNK_SIZE - sizeof(*ro_header));
- start = (get_random_int() % hole) & ~(alignment - 1);
+ start = prandom_u32_max(hole) & ~(alignment - 1);
*image_ptr = &ro_header->image[start];
*rw_image = &(*rw_header)->image[start];
@@ -1216,7 +1216,7 @@ static int bpf_jit_blind_insn(const struct bpf_insn *from,
bool emit_zext)
{
struct bpf_insn *to = to_buff;
- u32 imm_rnd = get_random_int();
+ u32 imm_rnd = get_random_u32();
s16 off;
BUILD_BUG_ON(BPF_REG_AX + 1 != MAX_BPF_JIT_REG);
diff --git a/kernel/bpf/hashtab.c b/kernel/bpf/hashtab.c
index ed3f8a53603b9175bb62e5721afb9be7e1c28af7..f39ee3e0558976fc593f81b8ad6c221df0ba4806 100644
--- a/kernel/bpf/hashtab.c
+++ b/kernel/bpf/hashtab.c
@@ -527,7 +527,7 @@ static struct bpf_map *htab_map_alloc(union bpf_attr *attr)
if (htab->map.map_flags & BPF_F_ZERO_SEED)
htab->hashrnd = 0;
else
- htab->hashrnd = get_random_int();
+ htab->hashrnd = get_random_u32();
htab_init_buckets(htab);
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 6f6d2d511c06f8804664cfab31d6d7dacadad505..014ee0953dbdea83bec4d794005e5a56e16e4d08 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -13350,7 +13350,7 @@ static int opt_subreg_zext_lo32_rnd_hi32(struct bpf_verifier_env *env,
aux[adj_idx].ptr_type == PTR_TO_CTX)
continue;
- imm_rnd = get_random_int();
+ imm_rnd = get_random_u32();
rnd_hi32_patch[0] = insn;
rnd_hi32_patch[1].imm = imm_rnd;
rnd_hi32_patch[3].dst_reg = load_reg;
diff --git a/kernel/kcsan/selftest.c b/kernel/kcsan/selftest.c
index 75712959c84e01db3c86fd2135604c8d76f7a171..00cdf8fa5693623273eb1244706ae3d5f6aeaab8 100644
--- a/kernel/kcsan/selftest.c
+++ b/kernel/kcsan/selftest.c
@@ -26,7 +26,7 @@
static bool __init test_requires(void)
{
/* random should be initialized for the below tests */
- return prandom_u32() + prandom_u32() != 0;
+ return get_random_u32() + get_random_u32() != 0;
}
/*
@@ -46,7 +46,7 @@ static bool __init test_encode_decode(void)
unsigned long addr;
size_t verif_size;
- prandom_bytes(&addr, sizeof(addr));
+ get_random_bytes(&addr, sizeof(addr));
if (addr < PAGE_SIZE)
addr = PAGE_SIZE;
diff --git a/kernel/locking/test-ww_mutex.c b/kernel/locking/test-ww_mutex.c
index 353004155d659fa271d0921bb454a2eb27ad1b8a..43efb2a0416025f9dc9ff4f89bbec416fd79d10a 100644
--- a/kernel/locking/test-ww_mutex.c
+++ b/kernel/locking/test-ww_mutex.c
@@ -399,7 +399,7 @@ static int *get_random_order(int count)
order[n] = n;
for (n = count - 1; n > 1; n--) {
- r = get_random_int() % (n + 1);
+ r = prandom_u32_max(n + 1);
if (r != n) {
tmp = order[n];
order[n] = order[r];
@@ -538,7 +538,7 @@ static void stress_one_work(struct work_struct *work)
{
struct stress *stress = container_of(work, typeof(*stress), work);
const int nlocks = stress->nlocks;
- struct ww_mutex *lock = stress->locks + (get_random_int() % nlocks);
+ struct ww_mutex *lock = stress->locks + prandom_u32_max(nlocks);
int err;
do {
diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index cee5da1e54c4121d771bf5fa19c07584e000bf49..8058bec87acee919514d13a98be07b37b423b4f4 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -310,7 +310,7 @@ static void clocksource_verify_choose_cpus(void)
* CPUs that are currently online.
*/
for (i = 1; i < n; i++) {
- cpu = prandom_u32() % nr_cpu_ids;
+ cpu = prandom_u32_max(nr_cpu_ids);
cpu = cpumask_next(cpu - 1, cpu_online_mask);
if (cpu >= nr_cpu_ids)
cpu = cpumask_first(cpu_online_mask);
diff --git a/lib/cmdline_kunit.c b/lib/cmdline_kunit.c
index a72a2c16066ef7cb2efa1e8c1636f4ff8a8a672b..d4572dbc914539a56c8b2a6da5ab101a9e11d80d 100644
--- a/lib/cmdline_kunit.c
+++ b/lib/cmdline_kunit.c
@@ -76,7 +76,7 @@ static void cmdline_test_lead_int(struct kunit *test)
int rc = cmdline_test_values[i];
int offset;
- sprintf(in, "%u%s", get_random_int() % 256, str);
+ sprintf(in, "%u%s", get_random_u8(), str);
/* Only first '-' after the number will advance the pointer */
offset = strlen(in) - strlen(str) + !!(rc == 2);
cmdline_do_one_test(test, in, rc, offset);
@@ -94,7 +94,7 @@ static void cmdline_test_tail_int(struct kunit *test)
int rc = strcmp(str, "") ? (strcmp(str, "-") ? 0 : 1) : 1;
int offset;
- sprintf(in, "%s%u", str, get_random_int() % 256);
+ sprintf(in, "%s%u", str, get_random_u8());
/*
* Only first and leading '-' not followed by integer
* will advance the pointer.
diff --git a/lib/fault-inject.c b/lib/fault-inject.c
index 423784d9c058eaf7d8833eade65bd389bd6a993e..96e092de5b72364205085aedba1e30909a3046d6 100644
--- a/lib/fault-inject.c
+++ b/lib/fault-inject.c
@@ -139,7 +139,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size)
return false;
}
- if (attr->probability <= prandom_u32() % 100)
+ if (attr->probability <= prandom_u32_max(100))
return false;
if (!fail_stacktrace(attr))
diff --git a/lib/find_bit_benchmark.c b/lib/find_bit_benchmark.c
index 10754586403b1b1ba0e72b1e4ee9105a8b10a3e5..7c3c011abd29489d7914f5d3e87aaa90c7c24e14 100644
--- a/lib/find_bit_benchmark.c
+++ b/lib/find_bit_benchmark.c
@@ -174,8 +174,8 @@ static int __init find_bit_test(void)
bitmap_zero(bitmap2, BITMAP_LEN);
while (nbits--) {
- __set_bit(prandom_u32() % BITMAP_LEN, bitmap);
- __set_bit(prandom_u32() % BITMAP_LEN, bitmap2);
+ __set_bit(prandom_u32_max(BITMAP_LEN), bitmap);
+ __set_bit(prandom_u32_max(BITMAP_LEN), bitmap2);
}
test_find_next_bit(bitmap, BITMAP_LEN);
diff --git a/lib/kobject.c b/lib/kobject.c
index 5f0e71ab292cb07e3650a09665afe977d149c7df..a0b2dbfcfa23347d6e546fbb79da78ba21e16c79 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -694,7 +694,7 @@ static void kobject_release(struct kref *kref)
{
struct kobject *kobj = container_of(kref, struct kobject, kref);
#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
- unsigned long delay = HZ + HZ * (get_random_int() & 0x3);
+ unsigned long delay = HZ + HZ * prandom_u32_max(4);
pr_info("kobject: '%s' (%p): %s, parent %p (delayed %ld)\n",
kobject_name(kobj), kobj, __func__, kobj->parent, delay);
INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup);
diff --git a/lib/random32.c b/lib/random32.c
index d5d9029362cbb3e6d44e98c41ce16c4f01360429..32060b8526681f069d97b1ffa1d53d3cc1e3e620 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -47,7 +47,7 @@
* @state: pointer to state structure holding seeded state.
*
* This is used for pseudo-randomness with no outside seeding.
- * For more random results, use prandom_u32().
+ * For more random results, use get_random_u32().
*/
u32 prandom_u32_state(struct rnd_state *state)
{
@@ -69,7 +69,7 @@ EXPORT_SYMBOL(prandom_u32_state);
* @bytes: the requested number of bytes
*
* This is used for pseudo-randomness with no outside seeding.
- * For more random results, use prandom_bytes().
+ * For more random results, use get_random_bytes().
*/
void prandom_bytes_state(struct rnd_state *state, void *buf, size_t bytes)
{
diff --git a/lib/reed_solomon/test_rslib.c b/lib/reed_solomon/test_rslib.c
index d9d1c33aebdaee97dae05004bf75f8e95a9edc38..848e7eb5da92170134761624cedd8f837a6bc936 100644
--- a/lib/reed_solomon/test_rslib.c
+++ b/lib/reed_solomon/test_rslib.c
@@ -164,7 +164,7 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
/* Load c with random data and encode */
for (i = 0; i < dlen; i++)
- c[i] = prandom_u32() & nn;
+ c[i] = get_random_u32() & nn;
memset(c + dlen, 0, nroots * sizeof(*c));
encode_rs16(rs, c, dlen, c + dlen, 0);
@@ -178,12 +178,12 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
for (i = 0; i < errs; i++) {
do {
/* Error value must be nonzero */
- errval = prandom_u32() & nn;
+ errval = get_random_u32() & nn;
} while (errval == 0);
do {
/* Must not choose the same location twice */
- errloc = prandom_u32() % len;
+ errloc = prandom_u32_max(len);
} while (errlocs[errloc] != 0);
errlocs[errloc] = 1;
@@ -194,19 +194,19 @@ static int get_rcw_we(struct rs_control *rs, struct wspace *ws,
for (i = 0; i < eras; i++) {
do {
/* Must not choose the same location twice */
- errloc = prandom_u32() % len;
+ errloc = prandom_u32_max(len);
} while (errlocs[errloc] != 0);
derrlocs[i] = errloc;
- if (ewsc && (prandom_u32() & 1)) {
+ if (ewsc && prandom_u32_max(2)) {
/* Erasure with the symbol intact */
errlocs[errloc] = 2;
} else {
/* Erasure with corrupted symbol */
do {
/* Error value must be nonzero */
- errval = prandom_u32() & nn;
+ errval = get_random_u32() & nn;
} while (errval == 0);
errlocs[errloc] = 1;
diff --git a/lib/sbitmap.c b/lib/sbitmap.c
index a8108a962dfd41f0b4afab3acfd77634a5b5d518..7280ae8ca88c7c23b272296ed3a4c8953046512e 100644
--- a/lib/sbitmap.c
+++ b/lib/sbitmap.c
@@ -21,7 +21,7 @@ static int init_alloc_hint(struct sbitmap *sb, gfp_t flags)
int i;
for_each_possible_cpu(i)
- *per_cpu_ptr(sb->alloc_hint, i) = prandom_u32() % depth;
+ *per_cpu_ptr(sb->alloc_hint, i) = prandom_u32_max(depth);
}
return 0;
}
@@ -33,7 +33,7 @@ static inline unsigned update_alloc_hint_before_get(struct sbitmap *sb,
hint = this_cpu_read(*sb->alloc_hint);
if (unlikely(hint >= depth)) {
- hint = depth ? prandom_u32() % depth : 0;
+ hint = depth ? prandom_u32_max(depth) : 0;
this_cpu_write(*sb->alloc_hint, hint);
}
diff --git a/lib/test-string_helpers.c b/lib/test-string_helpers.c
index 437d8e6b7cb124798ef0dc3b2ab99e1b0e8bd3fe..86fadd3ba08c58ed23961a2378bb25f82e793d1a 100644
--- a/lib/test-string_helpers.c
+++ b/lib/test-string_helpers.c
@@ -587,7 +587,7 @@ static int __init test_string_helpers_init(void)
for (i = 0; i < UNESCAPE_ALL_MASK + 1; i++)
test_string_unescape("unescape", i, false);
test_string_unescape("unescape inplace",
- get_random_int() % (UNESCAPE_ANY + 1), true);
+ prandom_u32_max(UNESCAPE_ANY + 1), true);
/* Without dictionary */
for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
diff --git a/lib/test_fprobe.c b/lib/test_fprobe.c
index ed70637a2ffa4c20a6254fd6448a6fbc698cace3..e0381b3ec410c181fb72fa120f6b107f0250bb50 100644
--- a/lib/test_fprobe.c
+++ b/lib/test_fprobe.c
@@ -145,7 +145,7 @@ static unsigned long get_ftrace_location(void *func)
static int fprobe_test_init(struct kunit *test)
{
do {
- rand1 = prandom_u32();
+ rand1 = get_random_u32();
} while (rand1 <= div_factor);
target = fprobe_selftest_target;
diff --git a/lib/test_hexdump.c b/lib/test_hexdump.c
index 5144899d3c6b8b235d33c8a988f3a413fa34aff8..0927f44cd4787f565140c9e75c92c87b0b026d76 100644
--- a/lib/test_hexdump.c
+++ b/lib/test_hexdump.c
@@ -149,7 +149,7 @@ static void __init test_hexdump(size_t len, int rowsize, int groupsize,
static void __init test_hexdump_set(int rowsize, bool ascii)
{
size_t d = min_t(size_t, sizeof(data_b), rowsize);
- size_t len = get_random_int() % d + 1;
+ size_t len = prandom_u32_max(d) + 1;
test_hexdump(len, rowsize, 4, ascii);
test_hexdump(len, rowsize, 2, ascii);
@@ -208,11 +208,11 @@ static void __init test_hexdump_overflow(size_t buflen, size_t len,
static void __init test_hexdump_overflow_set(size_t buflen, bool ascii)
{
unsigned int i = 0;
- int rs = (get_random_int() % 2 + 1) * 16;
+ int rs = (prandom_u32_max(2) + 1) * 16;
do {
int gs = 1 << i;
- size_t len = get_random_int() % rs + gs;
+ size_t len = prandom_u32_max(rs) + gs;
test_hexdump_overflow(buflen, rounddown(len, gs), rs, gs, ascii);
} while (i++ < 3);
@@ -223,11 +223,11 @@ static int __init test_hexdump_init(void)
unsigned int i;
int rowsize;
- rowsize = (get_random_int() % 2 + 1) * 16;
+ rowsize = (prandom_u32_max(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, false);
- rowsize = (get_random_int() % 2 + 1) * 16;
+ rowsize = (prandom_u32_max(2) + 1) * 16;
for (i = 0; i < 16; i++)
test_hexdump_set(rowsize, true);
diff --git a/lib/test_kprobes.c b/lib/test_kprobes.c
index a5edc2ebc947a6ba770065dc6e8dbe8e2688f7c2..eeb1d728d974679f675100867caff6ef5045186b 100644
--- a/lib/test_kprobes.c
+++ b/lib/test_kprobes.c
@@ -341,7 +341,7 @@ static int kprobes_test_init(struct kunit *test)
stacktrace_driver = kprobe_stacktrace_driver;
do {
- rand1 = prandom_u32();
+ rand1 = get_random_u32();
} while (rand1 <= div_factor);
return 0;
}
diff --git a/lib/test_list_sort.c b/lib/test_list_sort.c
index ade7a1ea0c8e25006af3772f91b793602aa4d605..19ff229b9c3a7838a9a216e71bd9fe866c53da2f 100644
--- a/lib/test_list_sort.c
+++ b/lib/test_list_sort.c
@@ -71,7 +71,7 @@ static void list_sort_test(struct kunit *test)
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, el);
/* force some equivalencies */
- el->value = prandom_u32() % (TEST_LIST_LEN / 3);
+ el->value = prandom_u32_max(TEST_LIST_LEN / 3);
el->serial = i;
el->poison1 = TEST_POISON1;
el->poison2 = TEST_POISON2;
diff --git a/lib/test_min_heap.c b/lib/test_min_heap.c
index d19c8080fd4d146e237a72754fdde0f907a03885..7b01b4387cfbcc3f55c44ed84648011553c40d81 100644
--- a/lib/test_min_heap.c
+++ b/lib/test_min_heap.c
@@ -83,7 +83,7 @@ static __init int test_heapify_all(bool min_heap)
/* Test with randomly generated values. */
heap.nr = ARRAY_SIZE(values);
for (i = 0; i < heap.nr; i++)
- values[i] = get_random_int();
+ values[i] = get_random_u32();
min_heapify_all(&heap, &funcs);
err += pop_verify_heap(min_heap, &heap, &funcs);
@@ -116,7 +116,7 @@ static __init int test_heap_push(bool min_heap)
/* Test with randomly generated values. */
while (heap.nr < heap.size) {
- temp = get_random_int();
+ temp = get_random_u32();
min_heap_push(&heap, &temp, &funcs);
}
err += pop_verify_heap(min_heap, &heap, &funcs);
@@ -158,7 +158,7 @@ static __init int test_heap_pop_push(bool min_heap)
/* Test with randomly generated values. */
for (i = 0; i < ARRAY_SIZE(data); i++) {
- temp = get_random_int();
+ temp = get_random_u32();
min_heap_pop_push(&heap, &temp, &funcs);
}
err += pop_verify_heap(min_heap, &heap, &funcs);
diff --git a/lib/test_objagg.c b/lib/test_objagg.c
index da137939a410072751320cd0a0c5109f656742db..c0c957c50635415b00b5ce526c2b25efc4ac370e 100644
--- a/lib/test_objagg.c
+++ b/lib/test_objagg.c
@@ -157,7 +157,7 @@ static int test_nodelta_obj_get(struct world *world, struct objagg *objagg,
int err;
if (should_create_root)
- prandom_bytes(world->next_root_buf,
+ get_random_bytes(world->next_root_buf,
sizeof(world->next_root_buf));
objagg_obj = world_obj_get(world, objagg, key_id);
diff --git a/lib/test_rhashtable.c b/lib/test_rhashtable.c
index 5a1dd4736b56f510a3ae449bccf6b486065c6374..b358a74ed7ed8a27345182cd909755d2e10730a7 100644
--- a/lib/test_rhashtable.c
+++ b/lib/test_rhashtable.c
@@ -291,7 +291,7 @@ static int __init test_rhltable(unsigned int entries)
if (WARN_ON(err))
goto out_free;
- k = prandom_u32();
+ k = get_random_u32();
ret = 0;
for (i = 0; i < entries; i++) {
rhl_test_objects[i].value.id = k;
@@ -369,12 +369,12 @@ static int __init test_rhltable(unsigned int entries)
pr_info("test %d random rhlist add/delete operations\n", entries);
for (j = 0; j < entries; j++) {
u32 i = prandom_u32_max(entries);
- u32 prand = prandom_u32();
+ u32 prand = get_random_u32();
cond_resched();
if (prand == 0)
- prand = prandom_u32();
+ prand = get_random_u32();
if (prand & 1) {
prand >>= 1;
diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index 4f2f2d1bac562dee432d9ec23b8e303d4fbb96c8..cf7780572f5b4a4bfd3b2deea5c44807e930d9ea 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -80,7 +80,7 @@ static int random_size_align_alloc_test(void)
int i;
for (i = 0; i < test_loop_count; i++) {
- rnd = prandom_u32();
+ rnd = get_random_u8();
/*
* Maximum 1024 pages, if PAGE_SIZE is 4096.
@@ -151,9 +151,7 @@ static int random_size_alloc_test(void)
int i;
for (i = 0; i < test_loop_count; i++) {
- n = prandom_u32();
- n = (n % 100) + 1;
-
+ n = prandom_u32_max(100) + 1;
p = vmalloc(n * PAGE_SIZE);
if (!p)
@@ -293,16 +291,12 @@ pcpu_alloc_test(void)
return -1;
for (i = 0; i < 35000; i++) {
- unsigned int r;
-
- r = prandom_u32();
- size = (r % (PAGE_SIZE / 4)) + 1;
+ size = prandom_u32_max(PAGE_SIZE / 4) + 1;
/*
* Maximum PAGE_SIZE
*/
- r = prandom_u32();
- align = 1 << ((r % 11) + 1);
+ align = 1 << (prandom_u32_max(11) + 1);
pcpu[i] = __alloc_percpu(size, align);
if (!pcpu[i])
@@ -393,14 +387,11 @@ static struct test_driver {
static void shuffle_array(int *arr, int n)
{
- unsigned int rnd;
int i, j;
for (i = n - 1; i > 0; i--) {
- rnd = prandom_u32();
-
/* Cut the range. */
- j = rnd % i;
+ j = prandom_u32_max(i);
/* Swap indexes. */
swap(arr[i], arr[j]);
diff --git a/lib/uuid.c b/lib/uuid.c
index 562d53977cabb99b84ad9dfb5a52440db260ed09..e309b4c5be3df0eb74861506d8cbbc3dd206c39b 100644
--- a/lib/uuid.c
+++ b/lib/uuid.c
@@ -52,7 +52,7 @@ EXPORT_SYMBOL(generate_random_guid);
static void __uuid_gen_common(__u8 b[16])
{
- prandom_bytes(b, 16);
+ get_random_bytes(b, 16);
/* reversion 0b10 */
b[8] = (b[8] & 0x3F) | 0x80;
}
diff --git a/mm/kasan/kasan_test.c b/mm/kasan/kasan_test.c
index 57e4c72aa8bd2634cc00aac679e98559391f37ea..0d59098f087613d11ef37cdd02c50894eb67e9e1 100644
--- a/mm/kasan/kasan_test.c
+++ b/mm/kasan/kasan_test.c
@@ -1299,7 +1299,7 @@ static void match_all_not_assigned(struct kunit *test)
KASAN_TEST_NEEDS_CONFIG_OFF(test, CONFIG_KASAN_GENERIC);
for (i = 0; i < 256; i++) {
- size = (get_random_int() % 1024) + 1;
+ size = prandom_u32_max(1024) + 1;
ptr = kmalloc(size, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
@@ -1308,7 +1308,7 @@ static void match_all_not_assigned(struct kunit *test)
}
for (i = 0; i < 256; i++) {
- order = (get_random_int() % 4) + 1;
+ order = prandom_u32_max(4) + 1;
pages = alloc_pages(GFP_KERNEL, order);
ptr = page_address(pages);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
@@ -1321,7 +1321,7 @@ static void match_all_not_assigned(struct kunit *test)
return;
for (i = 0; i < 256; i++) {
- size = (get_random_int() % 1024) + 1;
+ size = prandom_u32_max(1024) + 1;
ptr = vmalloc(size);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr);
KUNIT_EXPECT_GE(test, (u8)get_tag(ptr), (u8)KASAN_TAG_MIN);
diff --git a/mm/shmem.c b/mm/shmem.c
index 86214d48dd09984b241532a1345590215c2ba438..8280a5cb48dfc813e9a84df70fddb3bbcadabc28 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -2332,7 +2332,7 @@ static struct inode *shmem_get_inode(struct super_block *sb, struct inode *dir,
inode_init_owner(&init_user_ns, inode, dir, mode);
inode->i_blocks = 0;
inode->i_atime = inode->i_mtime = inode->i_ctime = current_time(inode);
- inode->i_generation = prandom_u32();
+ inode->i_generation = get_random_u32();
info = SHMEM_I(inode);
memset(info, 0, (char *)inode - (char *)info);
spin_lock_init(&info->lock);
diff --git a/mm/slab.c b/mm/slab.c
index d1f6e2c64c2ec4a9f328dd4b60e3412726c4a496..59c8e28f7b6ab7498ba13a244168f3e021f21155 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -2381,7 +2381,7 @@ static bool freelist_state_initialize(union freelist_init_state *state,
unsigned int rand;
/* Use best entropy available to define a random shift */
- rand = get_random_int();
+ rand = get_random_u32();
/* Use a random state if the pre-computed list is not available */
if (!cachep->random_seq) {
diff --git a/mm/slub.c b/mm/slub.c
index 96dd392d7f99f9be14fd5a33761867523ddfc1a0..157527d7101be0da54026376ff4f4095deb9ec2d 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1881,7 +1881,7 @@ static bool shuffle_freelist(struct kmem_cache *s, struct slab *slab)
return false;
freelist_count = oo_objects(s->oo);
- pos = get_random_int() % freelist_count;
+ pos = prandom_u32_max(freelist_count);
page_limit = slab->objects * s->size;
start = fixup_red_left(s, slab_address(slab));
diff --git a/net/802/garp.c b/net/802/garp.c
index f6012f8e59f00521e36a7e251ce3b452818a010e..fc9eb02a912f819459d6ba2922619bd85d8f6ba2 100644
--- a/net/802/garp.c
+++ b/net/802/garp.c
@@ -407,7 +407,7 @@ static void garp_join_timer_arm(struct garp_applicant *app)
{
unsigned long delay;
- delay = (u64)msecs_to_jiffies(garp_join_time) * prandom_u32() >> 32;
+ delay = prandom_u32_max(msecs_to_jiffies(garp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/802/mrp.c b/net/802/mrp.c
index 35e04cc5390c49e54b3bef5e7157c9e3db2514b3..155f74d8b14f4b66fad5451a88a10be01604b57d 100644
--- a/net/802/mrp.c
+++ b/net/802/mrp.c
@@ -592,7 +592,7 @@ static void mrp_join_timer_arm(struct mrp_applicant *app)
{
unsigned long delay;
- delay = (u64)msecs_to_jiffies(mrp_join_time) * prandom_u32() >> 32;
+ delay = prandom_u32_max(msecs_to_jiffies(mrp_join_time));
mod_timer(&app->join_timer, jiffies + delay);
}
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 6a6898ee40495d9de053396ae29cf482c0a62c66..db60217f911b31ca04a768b3dee562d1d165ca02 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -222,7 +222,7 @@ static void pick_new_mon(struct ceph_mon_client *monc)
max--;
}
- n = prandom_u32() % max;
+ n = prandom_u32_max(max);
if (o >= 0 && n >= o)
n++;
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 87b883c7bfd6492ac95c550af64db09ea9acc612..4e4f1e4bc265a9294103131b565ac955a8f25c3f 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1479,7 +1479,7 @@ static bool target_should_be_paused(struct ceph_osd_client *osdc,
static int pick_random_replica(const struct ceph_osds *acting)
{
- int i = prandom_u32() % acting->size;
+ int i = prandom_u32_max(acting->size);
dout("%s picked osd%d, primary osd%d\n", __func__,
acting->osds[i], acting->primary);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index e93edb81010363a4e41e248fd652d68f8ab958e4..3c4786b9990703814995832027af16d8c8e06c72 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -111,7 +111,7 @@ static void neigh_cleanup_and_release(struct neighbour *neigh)
unsigned long neigh_rand_reach_time(unsigned long base)
{
- return base ? (prandom_u32() % base) + (base >> 1) : 0;
+ return base ? prandom_u32_max(base) + (base >> 1) : 0;
}
EXPORT_SYMBOL(neigh_rand_reach_time);
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 88906ba6d9a7851dfbb4762d3504cc20423e1053..c3763056c554ad9c5f7849040903811a7542f992 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -2324,7 +2324,7 @@ static inline int f_pick(struct pktgen_dev *pkt_dev)
pkt_dev->curfl = 0; /*reset */
}
} else {
- flow = prandom_u32() % pkt_dev->cflows;
+ flow = prandom_u32_max(pkt_dev->cflows);
pkt_dev->curfl = flow;
if (pkt_dev->flows[flow].count > pkt_dev->lflow) {
@@ -2380,10 +2380,9 @@ static void set_cur_queue_map(struct pktgen_dev *pkt_dev)
else if (pkt_dev->queue_map_min <= pkt_dev->queue_map_max) {
__u16 t;
if (pkt_dev->flags & F_QUEUE_MAP_RND) {
- t = prandom_u32() %
- (pkt_dev->queue_map_max -
- pkt_dev->queue_map_min + 1)
- + pkt_dev->queue_map_min;
+ t = prandom_u32_max(pkt_dev->queue_map_max -
+ pkt_dev->queue_map_min + 1) +
+ pkt_dev->queue_map_min;
} else {
t = pkt_dev->cur_queue_map + 1;
if (t > pkt_dev->queue_map_max)
@@ -2412,7 +2411,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACSRC_RND)
- mc = prandom_u32() % pkt_dev->src_mac_count;
+ mc = prandom_u32_max(pkt_dev->src_mac_count);
else {
mc = pkt_dev->cur_src_mac_offset++;
if (pkt_dev->cur_src_mac_offset >=
@@ -2438,7 +2437,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
__u32 tmp;
if (pkt_dev->flags & F_MACDST_RND)
- mc = prandom_u32() % pkt_dev->dst_mac_count;
+ mc = prandom_u32_max(pkt_dev->dst_mac_count);
else {
mc = pkt_dev->cur_dst_mac_offset++;
@@ -2465,23 +2464,23 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
for (i = 0; i < pkt_dev->nr_labels; i++)
if (pkt_dev->labels[i] & MPLS_STACK_BOTTOM)
pkt_dev->labels[i] = MPLS_STACK_BOTTOM |
- ((__force __be32)prandom_u32() &
+ ((__force __be32)get_random_u32() &
htonl(0x000fffff));
}
if ((pkt_dev->flags & F_VID_RND) && (pkt_dev->vlan_id != 0xffff)) {
- pkt_dev->vlan_id = prandom_u32() & (4096 - 1);
+ pkt_dev->vlan_id = prandom_u32_max(4096);
}
if ((pkt_dev->flags & F_SVID_RND) && (pkt_dev->svlan_id != 0xffff)) {
- pkt_dev->svlan_id = prandom_u32() & (4096 - 1);
+ pkt_dev->svlan_id = prandom_u32_max(4096);
}
if (pkt_dev->udp_src_min < pkt_dev->udp_src_max) {
if (pkt_dev->flags & F_UDPSRC_RND)
- pkt_dev->cur_udp_src = prandom_u32() %
- (pkt_dev->udp_src_max - pkt_dev->udp_src_min)
- + pkt_dev->udp_src_min;
+ pkt_dev->cur_udp_src = prandom_u32_max(
+ pkt_dev->udp_src_max - pkt_dev->udp_src_min) +
+ pkt_dev->udp_src_min;
else {
pkt_dev->cur_udp_src++;
@@ -2492,9 +2491,9 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->udp_dst_min < pkt_dev->udp_dst_max) {
if (pkt_dev->flags & F_UDPDST_RND) {
- pkt_dev->cur_udp_dst = prandom_u32() %
- (pkt_dev->udp_dst_max - pkt_dev->udp_dst_min)
- + pkt_dev->udp_dst_min;
+ pkt_dev->cur_udp_dst = prandom_u32_max(
+ pkt_dev->udp_dst_max - pkt_dev->udp_dst_min) +
+ pkt_dev->udp_dst_min;
} else {
pkt_dev->cur_udp_dst++;
if (pkt_dev->cur_udp_dst >= pkt_dev->udp_dst_max)
@@ -2509,7 +2508,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (imn < imx) {
__u32 t;
if (pkt_dev->flags & F_IPSRC_RND)
- t = prandom_u32() % (imx - imn) + imn;
+ t = prandom_u32_max(imx - imn) + imn;
else {
t = ntohl(pkt_dev->cur_saddr);
t++;
@@ -2531,8 +2530,8 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->flags & F_IPDST_RND) {
do {
- t = prandom_u32() %
- (imx - imn) + imn;
+ t = prandom_u32_max(imx - imn) +
+ imn;
s = htonl(t);
} while (ipv4_is_loopback(s) ||
ipv4_is_multicast(s) ||
@@ -2569,7 +2568,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
for (i = 0; i < 4; i++) {
pkt_dev->cur_in6_daddr.s6_addr32[i] =
- (((__force __be32)prandom_u32() |
+ (((__force __be32)get_random_u32() |
pkt_dev->min_in6_daddr.s6_addr32[i]) &
pkt_dev->max_in6_daddr.s6_addr32[i]);
}
@@ -2579,9 +2578,9 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
if (pkt_dev->min_pkt_size < pkt_dev->max_pkt_size) {
__u32 t;
if (pkt_dev->flags & F_TXSIZE_RND) {
- t = prandom_u32() %
- (pkt_dev->max_pkt_size - pkt_dev->min_pkt_size)
- + pkt_dev->min_pkt_size;
+ t = prandom_u32_max(pkt_dev->max_pkt_size -
+ pkt_dev->min_pkt_size) +
+ pkt_dev->min_pkt_size;
} else {
t = pkt_dev->cur_pkt_size + 1;
if (t > pkt_dev->max_pkt_size)
@@ -2590,7 +2589,7 @@ static void mod_cur_headers(struct pktgen_dev *pkt_dev)
pkt_dev->cur_pkt_size = t;
} else if (pkt_dev->n_imix_entries > 0) {
struct imix_pkt *entry;
- __u32 t = prandom_u32() % IMIX_PRECISION;
+ __u32 t = prandom_u32_max(IMIX_PRECISION);
__u8 entry_index = pkt_dev->imix_distribution[t];
entry = &pkt_dev->imix_entries[entry_index];
diff --git a/net/core/stream.c b/net/core/stream.c
index 1105057ce00a53e190b7aefa3dfb80c73e1ddaea..75fded8495f5b70700637b125a4993021deac407 100644
--- a/net/core/stream.c
+++ b/net/core/stream.c
@@ -123,7 +123,7 @@ int sk_stream_wait_memory(struct sock *sk, long *timeo_p)
DEFINE_WAIT_FUNC(wait, woken_wake_function);
if (sk_stream_memory_free(sk))
- current_timeo = vm_wait = (prandom_u32() % (HZ / 5)) + 2;
+ current_timeo = vm_wait = prandom_u32_max(HZ / 5) + 2;
add_wait_queue(sk_sleep(sk), &wait);
diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index 6a6e121dc00c07add075679cd3bd5f9a5bad9027..713b7b8dad7e58844e67da727b831d0f9f28dc38 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -144,7 +144,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr,
inet->inet_sport,
inet->inet_dport);
- inet->inet_id = prandom_u32();
+ inet->inet_id = get_random_u16();
err = dccp_connect(sk);
rt = NULL;
@@ -443,7 +443,7 @@ struct sock *dccp_v4_request_recv_sock(const struct sock *sk,
RCU_INIT_POINTER(newinet->inet_opt, rcu_dereference(ireq->ireq_opt));
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl;
- newinet->inet_id = prandom_u32();
+ newinet->inet_id = get_random_u16();
if (dst == NULL && (dst = inet_csk_route_child_sock(sk, newsk, req)) == NULL)
goto put_and_exit;
diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c
index 405a8c2aea641119bd802d06943283252c9d5589..0ee7fd2597300f1e63396ea7025b47f194de2a02 100644
--- a/net/ipv4/datagram.c
+++ b/net/ipv4/datagram.c
@@ -73,7 +73,7 @@ int __ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len
reuseport_has_conns(sk, true);
sk->sk_state = TCP_ESTABLISHED;
sk_set_txhash(sk);
- inet->inet_id = prandom_u32();
+ inet->inet_id = get_random_u16();
sk_dst_set(sk, &rt->dst);
err = 0;
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index df0660d818ac500c9bfc17ce21e77585b4bd747b..81be3e0f0e70471f40db9d6a0b832cc8d3398a81 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -213,7 +213,7 @@ static void igmp_stop_timer(struct ip_mc_list *im)
/* It must be called with locked im->lock */
static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
{
- int tv = prandom_u32() % max_delay;
+ int tv = prandom_u32_max(max_delay);
im->tm_running = 1;
if (!mod_timer(&im->timer, jiffies+tv+2))
@@ -222,7 +222,7 @@ static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
static void igmp_gq_start_timer(struct in_device *in_dev)
{
- int tv = prandom_u32() % in_dev->mr_maxdelay;
+ int tv = prandom_u32_max(in_dev->mr_maxdelay);
unsigned long exp = jiffies + tv + 2;
if (in_dev->mr_gq_running &&
@@ -236,7 +236,7 @@ static void igmp_gq_start_timer(struct in_device *in_dev)
static void igmp_ifc_start_timer(struct in_device *in_dev, int delay)
{
- int tv = prandom_u32() % delay;
+ int tv = prandom_u32_max(delay);
if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))
in_dev_hold(in_dev);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index ebca860e113f93563606d31490ea46f93bcd4cc7..4e84ed21d16fedc7515728f94a5b560589c989e1 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -314,7 +314,7 @@ inet_csk_find_open_port(const struct sock *sk, struct inet_bind_bucket **tb_ret,
if (likely(remaining > 1))
remaining &= ~1U;
- offset = prandom_u32() % remaining;
+ offset = prandom_u32_max(remaining);
/* __inet_hash_connect() favors ports having @low parity
* We do the opposite to not pollute connect() users.
*/
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index a0ad34e4f044b7b12ef3fbcdc4eed37ce76dbe46..d3dc281566229479aa9027229a37973f8507d014 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -1037,7 +1037,7 @@ int __inet_hash_connect(struct inet_timewait_death_row *death_row,
* on low contention the randomness is maximal and on high contention
* it may be inexistent.
*/
- i = max_t(int, i, (prandom_u32() & 7) * 2);
+ i = max_t(int, i, prandom_u32_max(8) * 2);
WRITE_ONCE(table_perturb[index], READ_ONCE(table_perturb[index]) + i + 2);
/* Head lock still held and bh's disabled */
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 1ae83ad629b2562a43b180fd68d7efc6515692c0..922c87ef1ab588205edda64fe09c2d7d460e67db 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -172,7 +172,7 @@ int ip_build_and_send_pkt(struct sk_buff *skb, const struct sock *sk,
* Avoid using the hashed IP ident generator.
*/
if (sk->sk_protocol == IPPROTO_TCP)
- iph->id = (__force __be16)prandom_u32();
+ iph->id = (__force __be16)get_random_u16();
else
__ip_select_ident(net, iph, 1);
}
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 795cbe1de912403b367c92947516382339437b06..cd1fa9f70f1a17276648f1ec693c3b40cb6e11b4 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3664,7 +3664,7 @@ static __net_init int rt_genid_init(struct net *net)
{
atomic_set(&net->ipv4.rt_genid, 0);
atomic_set(&net->fnhe_genid, 0);
- atomic_set(&net->ipv4.dev_addr_genid, get_random_int());
+ atomic_set(&net->ipv4.dev_addr_genid, get_random_u32());
return 0;
}
@@ -3719,7 +3719,7 @@ int __init ip_rt_init(void)
ip_idents = idents_hash;
- prandom_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents));
+ get_random_bytes(ip_idents, (ip_idents_mask + 1) * sizeof(*ip_idents));
ip_tstamps = idents_hash + (ip_idents_mask + 1) * sizeof(*ip_idents);
diff --git a/net/ipv4/tcp_cdg.c b/net/ipv4/tcp_cdg.c
index 112f28f9369349a54ac719af3de353577a830cf1..ba4d98e510e05790c15e0f572119b54179e76819 100644
--- a/net/ipv4/tcp_cdg.c
+++ b/net/ipv4/tcp_cdg.c
@@ -243,7 +243,7 @@ static bool tcp_cdg_backoff(struct sock *sk, u32 grad)
struct cdg *ca = inet_csk_ca(sk);
struct tcp_sock *tp = tcp_sk(sk);
- if (prandom_u32() <= nexp_u32(grad * backoff_factor))
+ if (get_random_u32() <= nexp_u32(grad * backoff_factor))
return false;
if (use_ineff) {
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 6376ad91576546d48ffcc8ed9cdf8a1904679e33..7a250ef9d1b7b5eedc10dbf4f599343d0fa464d2 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -323,7 +323,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr);
}
- inet->inet_id = prandom_u32();
+ inet->inet_id = get_random_u16();
if (tcp_fastopen_defer_connect(sk, &err))
return err;
@@ -1543,7 +1543,7 @@ struct sock *tcp_v4_syn_recv_sock(const struct sock *sk, struct sk_buff *skb,
inet_csk(newsk)->icsk_ext_hdr_len = 0;
if (inet_opt)
inet_csk(newsk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
- newinet->inet_id = prandom_u32();
+ newinet->inet_id = get_random_u16();
/* Set ToS of the new socket based upon the value of incoming SYN.
* ECT bits are set later in tcp_init_transfer().
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 8126f67d18b3410fa1af7ea738ff2f8b9d7826e1..662d717d512335bcb99f57b829402f61efebbe94 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -246,7 +246,7 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rand = prandom_u32();
+ rand = get_random_u32();
first = reciprocal_scale(rand, remaining) + low;
/*
* force rand to be an odd multiple of UDP_HTABLE_SIZE
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 10ce86bf228e186aee1942079b54042c30223126..417834b7169d7afc9730d2a2fe919261e77871f1 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -104,7 +104,7 @@ static inline u32 cstamp_delta(unsigned long cstamp)
static inline s32 rfc3315_s14_backoff_init(s32 irt)
{
/* multiply 'initial retransmission time' by 0.9 .. 1.1 */
- u64 tmp = (900000 + prandom_u32() % 200001) * (u64)irt;
+ u64 tmp = (900000 + prandom_u32_max(200001)) * (u64)irt;
do_div(tmp, 1000000);
return (s32)tmp;
}
@@ -112,11 +112,11 @@ static inline s32 rfc3315_s14_backoff_init(s32 irt)
static inline s32 rfc3315_s14_backoff_update(s32 rt, s32 mrt)
{
/* multiply 'retransmission timeout' by 1.9 .. 2.1 */
- u64 tmp = (1900000 + prandom_u32() % 200001) * (u64)rt;
+ u64 tmp = (1900000 + prandom_u32_max(200001)) * (u64)rt;
do_div(tmp, 1000000);
if ((s32)tmp > mrt) {
/* multiply 'maximum retransmission time' by 0.9 .. 1.1 */
- tmp = (900000 + prandom_u32() % 200001) * (u64)mrt;
+ tmp = (900000 + prandom_u32_max(200001)) * (u64)mrt;
do_div(tmp, 1000000);
}
return (s32)tmp;
@@ -3967,7 +3967,7 @@ static void addrconf_dad_kick(struct inet6_ifaddr *ifp)
if (ifp->flags & IFA_F_OPTIMISTIC)
rand_num = 0;
else
- rand_num = prandom_u32() % (idev->cnf.rtr_solicit_delay ? : 1);
+ rand_num = prandom_u32_max(idev->cnf.rtr_solicit_delay ?: 1);
nonce = 0;
if (idev->cnf.enhanced_dad ||
diff --git a/net/ipv6/ip6_flowlabel.c b/net/ipv6/ip6_flowlabel.c
index ceb85c67ce3952b7142eeec29bff46a7eaf5217b..18481eb76a0a4a0e79924f4c657412d09bf914fe 100644
--- a/net/ipv6/ip6_flowlabel.c
+++ b/net/ipv6/ip6_flowlabel.c
@@ -220,7 +220,7 @@ static struct ip6_flowlabel *fl_intern(struct net *net,
spin_lock_bh(&ip6_fl_lock);
if (label == 0) {
for (;;) {
- fl->label = htonl(prandom_u32())&IPV6_FLOWLABEL_MASK;
+ fl->label = htonl(get_random_u32())&IPV6_FLOWLABEL_MASK;
if (fl->label) {
lfl = __fl_lookup(net, fl->label);
if (!lfl)
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 0566ab03ddbee47b1d77c99300d9eea6f47a78bc..7860383295d84728dacb7e5331a489c3bc4f50e0 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1050,7 +1050,7 @@ bool ipv6_chk_mcast_addr(struct net_device *dev, const struct in6_addr *group,
/* called with mc_lock */
static void mld_gq_start_work(struct inet6_dev *idev)
{
- unsigned long tv = prandom_u32() % idev->mc_maxdelay;
+ unsigned long tv = prandom_u32_max(idev->mc_maxdelay);
idev->mc_gq_running = 1;
if (!mod_delayed_work(mld_wq, &idev->mc_gq_work, tv + 2))
@@ -1068,7 +1068,7 @@ static void mld_gq_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_ifc_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32() % delay;
+ unsigned long tv = prandom_u32_max(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_ifc_work, tv + 2))
in6_dev_hold(idev);
@@ -1085,7 +1085,7 @@ static void mld_ifc_stop_work(struct inet6_dev *idev)
/* called with mc_lock */
static void mld_dad_start_work(struct inet6_dev *idev, unsigned long delay)
{
- unsigned long tv = prandom_u32() % delay;
+ unsigned long tv = prandom_u32_max(delay);
if (!mod_delayed_work(mld_wq, &idev->mc_dad_work, tv + 2))
in6_dev_hold(idev);
@@ -1130,7 +1130,7 @@ static void igmp6_group_queried(struct ifmcaddr6 *ma, unsigned long resptime)
}
if (delay >= resptime)
- delay = prandom_u32() % resptime;
+ delay = prandom_u32_max(resptime);
if (!mod_delayed_work(mld_wq, &ma->mca_work, delay))
refcount_inc(&ma->mca_refcnt);
@@ -2574,7 +2574,7 @@ static void igmp6_join_group(struct ifmcaddr6 *ma)
igmp6_send(&ma->mca_addr, ma->idev->dev, ICMPV6_MGM_REPORT);
- delay = prandom_u32() % unsolicited_report_interval(ma->idev);
+ delay = prandom_u32_max(unsolicited_report_interval(ma->idev));
if (cancel_delayed_work(&ma->mca_work)) {
refcount_dec(&ma->mca_refcnt);
diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index 2880dc7d9a491682bfea59757593d07178874b56..2685c3f15e9d30e8500f32e6b1e39ce36bf3509c 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -18,7 +18,7 @@ static u32 __ipv6_select_ident(struct net *net,
u32 id;
do {
- id = prandom_u32();
+ id = get_random_u32();
} while (!id);
return id;
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 7f3f5f51081d55b3958d81cf42cf97d930f631db..3d91b98db0996a2e1ec6d57fb035fc2988a94b09 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -2036,7 +2036,7 @@ static void __init init_sample_table(void)
memset(sample_table, 0xff, sizeof(sample_table));
for (col = 0; col < SAMPLE_COLUMNS; col++) {
- prandom_bytes(rnd, sizeof(rnd));
+ get_random_bytes(rnd, sizeof(rnd));
for (i = 0; i < MCS_GROUP_RATES; i++) {
new_idx = (i + rnd[i]) % MCS_GROUP_RATES;
while (sample_table[col][new_idx] != 0xff)
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 0e8c4f48c36d790c92b4dee1bea491c8f12ed09d..dc3cdee51e6604d8713b0c1915743dbe2212bfbc 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -641,7 +641,7 @@ static void ieee80211_send_scan_probe_req(struct ieee80211_sub_if_data *sdata,
if (flags & IEEE80211_PROBE_FLAG_RANDOM_SN) {
struct ieee80211_hdr *hdr = (void *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- u16 sn = get_random_u32();
+ u16 sn = get_random_u16();
info->control.flags |= IEEE80211_TX_CTRL_NO_SEQNO;
hdr->seq_ctrl =
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index fb67f1ca2495b3e5e157d72608d0b6916a49bc61..8c04bb57dd6fe3870efd75b7263f73d398c2888b 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -1308,7 +1308,7 @@ void ip_vs_random_dropentry(struct netns_ipvs *ipvs)
* Randomly scan 1/32 of the whole table every second
*/
for (idx = 0; idx < (ip_vs_conn_tab_size>>5); idx++) {
- unsigned int hash = prandom_u32() & ip_vs_conn_tab_mask;
+ unsigned int hash = get_random_u32() & ip_vs_conn_tab_mask;
hlist_for_each_entry_rcu(cp, &ip_vs_conn_tab[hash], c_list) {
if (cp->ipvs != ipvs)
diff --git a/net/netfilter/ipvs/ip_vs_twos.c b/net/netfilter/ipvs/ip_vs_twos.c
index acb55d8393ef6933d003ff3ffaa21891c1aee595..f2579fc9c75bd3f9ffbe4e77fd4f36d3721e1b60 100644
--- a/net/netfilter/ipvs/ip_vs_twos.c
+++ b/net/netfilter/ipvs/ip_vs_twos.c
@@ -71,8 +71,8 @@ static struct ip_vs_dest *ip_vs_twos_schedule(struct ip_vs_service *svc,
* from 0 to total_weight
*/
total_weight += 1;
- rweight1 = prandom_u32() % total_weight;
- rweight2 = prandom_u32() % total_weight;
+ rweight1 = prandom_u32_max(total_weight);
+ rweight2 = prandom_u32_max(total_weight);
/* Pick two weighted servers */
list_for_each_entry_rcu(dest, &svc->destinations, n_list) {
diff --git a/net/netfilter/nf_nat_core.c b/net/netfilter/nf_nat_core.c
index d8e6380f63371c1265342078e4d0112092a2efa5..18319a6e68062bf2bdd7c1ef44a9ee5a7a5185ad 100644
--- a/net/netfilter/nf_nat_core.c
+++ b/net/netfilter/nf_nat_core.c
@@ -468,7 +468,7 @@ static void nf_nat_l4proto_unique_tuple(struct nf_conntrack_tuple *tuple,
if (range->flags & NF_NAT_RANGE_PROTO_OFFSET)
off = (ntohs(*keyptr) - ntohs(range->base_proto.all));
else
- off = prandom_u32();
+ off = get_random_u16();
attempts = range_size;
if (attempts > max_attempts)
@@ -490,7 +490,7 @@ static void nf_nat_l4proto_unique_tuple(struct nf_conntrack_tuple *tuple,
if (attempts >= range_size || attempts < 16)
return;
attempts /= 2;
- off = prandom_u32();
+ off = get_random_u16();
goto another_round;
}
diff --git a/net/netfilter/xt_statistic.c b/net/netfilter/xt_statistic.c
index 203e24ae472c2a1bd0f67eaf2ce92639a6aebca4..b26c1dcfc27b50c73a24904c599950443f51b780 100644
--- a/net/netfilter/xt_statistic.c
+++ b/net/netfilter/xt_statistic.c
@@ -34,7 +34,7 @@ statistic_mt(const struct sk_buff *skb, struct xt_action_param *par)
switch (info->mode) {
case XT_STATISTIC_MODE_RANDOM:
- if ((prandom_u32() & 0x7FFFFFFF) < info->u.random.probability)
+ if ((get_random_u32() & 0x7FFFFFFF) < info->u.random.probability)
ret = !ret;
break;
case XT_STATISTIC_MODE_NTH:
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index 868db4669a2912d01433dddc41f3905a5e7bf2bf..ca3ebfdb30231dd48b22cc36d8890c5e4b39223d 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -1033,7 +1033,7 @@ static int sample(struct datapath *dp, struct sk_buff *skb,
actions = nla_next(sample_arg, &rem);
if ((arg->probability != U32_MAX) &&
- (!arg->probability || prandom_u32() > arg->probability)) {
+ (!arg->probability || get_random_u32() > arg->probability)) {
if (last)
consume_skb(skb);
return 0;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index d3f6db350de779f237a48af6c79fef0c6e425da4..6ce8dd19f33c3aafef0b9dab648a44fdd3478866 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1350,7 +1350,7 @@ static bool fanout_flow_is_huge(struct packet_sock *po, struct sk_buff *skb)
if (READ_ONCE(history[i]) == rxhash)
count++;
- victim = prandom_u32() % ROLLOVER_HLEN;
+ victim = prandom_u32_max(ROLLOVER_HLEN);
/* Avoid dirtying the cache line if possible */
if (READ_ONCE(history[victim]) != rxhash)
diff --git a/net/rds/bind.c b/net/rds/bind.c
index 5b5fb4ca8d3e5523336aee389acd7ad160b28d2f..97a29172a8eec44b370ae19004f2c99610f75971 100644
--- a/net/rds/bind.c
+++ b/net/rds/bind.c
@@ -104,7 +104,7 @@ static int rds_add_bound(struct rds_sock *rs, const struct in6_addr *addr,
return -EINVAL;
last = rover;
} else {
- rover = max_t(u16, prandom_u32(), 2);
+ rover = max_t(u16, get_random_u16(), 2);
last = rover - 1;
}
diff --git a/net/sched/act_gact.c b/net/sched/act_gact.c
index abe1bcc5c79716d896967e9dcde8104960eccbf6..62d682b96b88527314387c9180df2ffc9371d160 100644
--- a/net/sched/act_gact.c
+++ b/net/sched/act_gact.c
@@ -25,7 +25,7 @@ static struct tc_action_ops act_gact_ops;
static int gact_net_rand(struct tcf_gact *gact)
{
smp_rmb(); /* coupled with smp_wmb() in tcf_gact_init() */
- if (prandom_u32() % gact->tcfg_pval)
+ if (prandom_u32_max(gact->tcfg_pval))
return gact->tcf_action;
return gact->tcfg_paction;
}
diff --git a/net/sched/act_sample.c b/net/sched/act_sample.c
index 5ba36f70e3a138b23da22f5b10eb7ca971737ea4..7a25477f5d996aa633c15f5f82a65ef45aae7203 100644
--- a/net/sched/act_sample.c
+++ b/net/sched/act_sample.c
@@ -168,7 +168,7 @@ static int tcf_sample_act(struct sk_buff *skb, const struct tc_action *a,
psample_group = rcu_dereference_bh(s->psample_group);
/* randomly sample packets according to rate */
- if (psample_group && (prandom_u32() % s->rate == 0)) {
+ if (psample_group && (prandom_u32_max(s->rate) == 0)) {
if (!skb_at_tc_ingress(skb)) {
md.in_ifindex = skb->skb_iif;
md.out_ifindex = skb->dev->ifindex;
diff --git a/net/sched/sch_cake.c b/net/sched/sch_cake.c
index 55c6879d2c7e7fe0a452102e1704b9a00ba74684..817cd0695b3502b3e0bfd744d2c81f67cc474074 100644
--- a/net/sched/sch_cake.c
+++ b/net/sched/sch_cake.c
@@ -573,7 +573,7 @@ static bool cobalt_should_drop(struct cobalt_vars *vars,
/* Simple BLUE implementation. Lack of ECN is deliberate. */
if (vars->p_drop)
- drop |= (prandom_u32() < vars->p_drop);
+ drop |= (get_random_u32() < vars->p_drop);
/* Overload the drop_next field as an activity timeout */
if (!vars->count)
@@ -2092,11 +2092,11 @@ static struct sk_buff *cake_dequeue(struct Qdisc *sch)
WARN_ON(host_load > CAKE_QUEUES);
- /* The shifted prandom_u32() is a way to apply dithering to
- * avoid accumulating roundoff errors
+ /* The get_random_u16() is a way to apply dithering to avoid
+ * accumulating roundoff errors
*/
flow->deficit += (b->flow_quantum * quantum_div[host_load] +
- (prandom_u32() >> 16)) >> 16;
+ get_random_u16()) >> 16;
list_move_tail(&flow->flowchain, &b->old_flows);
goto retry;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 18f4273a835b9a4cd651e00cc673b36f20e87659..fb00ac40ecb7283a0ac85008e91ec499e66a4ce7 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -171,7 +171,7 @@ static inline struct netem_skb_cb *netem_skb_cb(struct sk_buff *skb)
static void init_crandom(struct crndstate *state, unsigned long rho)
{
state->rho = rho;
- state->last = prandom_u32();
+ state->last = get_random_u32();
}
/* get_crandom - correlated random number generator
@@ -184,9 +184,9 @@ static u32 get_crandom(struct crndstate *state)
unsigned long answer;
if (!state || state->rho == 0) /* no correlation */
- return prandom_u32();
+ return get_random_u32();
- value = prandom_u32();
+ value = get_random_u32();
rho = (u64)state->rho + 1;
answer = (value * ((1ull<<32) - rho) + state->last * rho) >> 32;
state->last = answer;
@@ -200,7 +200,7 @@ static u32 get_crandom(struct crndstate *state)
static bool loss_4state(struct netem_sched_data *q)
{
struct clgstate *clg = &q->clg;
- u32 rnd = prandom_u32();
+ u32 rnd = get_random_u32();
/*
* Makes a comparison between rnd and the transition
@@ -268,15 +268,15 @@ static bool loss_gilb_ell(struct netem_sched_data *q)
switch (clg->state) {
case GOOD_STATE:
- if (prandom_u32() < clg->a1)
+ if (get_random_u32() < clg->a1)
clg->state = BAD_STATE;
- if (prandom_u32() < clg->a4)
+ if (get_random_u32() < clg->a4)
return true;
break;
case BAD_STATE:
- if (prandom_u32() < clg->a2)
+ if (get_random_u32() < clg->a2)
clg->state = GOOD_STATE;
- if (prandom_u32() > clg->a3)
+ if (get_random_u32() > clg->a3)
return true;
}
@@ -513,8 +513,8 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch,
goto finish_segs;
}
- skb->data[prandom_u32() % skb_headlen(skb)] ^=
- 1<<(prandom_u32() % 8);
+ skb->data[prandom_u32_max(skb_headlen(skb))] ^=
+ 1<<prandom_u32_max(8);
}
if (unlikely(sch->q.qlen >= sch->limit)) {
@@ -632,7 +632,7 @@ static void get_slot_next(struct netem_sched_data *q, u64 now)
if (!q->slot_dist)
next_delay = q->slot_config.min_delay +
- (prandom_u32() *
+ (get_random_u32() *
(q->slot_config.max_delay -
q->slot_config.min_delay) >> 32);
else
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index 974038ba6c7b879d0b550178e210a12a41320763..265c238047a42f47ca18d976873857e20bebcf30 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -72,7 +72,7 @@ bool pie_drop_early(struct Qdisc *sch, struct pie_params *params,
if (vars->accu_prob >= (MAX_PROB / 2) * 17)
return true;
- prandom_bytes(&rnd, 8);
+ get_random_bytes(&rnd, 8);
if ((rnd >> BITS_PER_BYTE) < local_prob) {
vars->accu_prob = 0;
return true;
diff --git a/net/sched/sch_sfb.c b/net/sched/sch_sfb.c
index e2389fa3cff8ac5ead731335e06fa9acff8b8ef4..0366a1a029a9ea8f4d08095fdf015c7594f379e1 100644
--- a/net/sched/sch_sfb.c
+++ b/net/sched/sch_sfb.c
@@ -379,7 +379,7 @@ static int sfb_enqueue(struct sk_buff *skb, struct Qdisc *sch,
goto enqueue;
}
- r = prandom_u32() & SFB_MAX_PROB;
+ r = get_random_u16() & SFB_MAX_PROB;
if (unlikely(r < p_min)) {
if (unlikely(p_min > SFB_MAX_PROB / 2)) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 171f1a35d205225cdec9dbc6d0a07f446ce92996..83628c347744b32987c256c4a49a3c6fc19e20da 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -8319,7 +8319,7 @@ static int sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
- rover = prandom_u32() % remaining + low;
+ rover = prandom_u32_max(remaining) + low;
do {
rover++;
@@ -9448,7 +9448,7 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
newinet->inet_rcv_saddr = inet->inet_rcv_saddr;
newinet->inet_dport = htons(asoc->peer.port);
newinet->pmtudisc = inet->pmtudisc;
- newinet->inet_id = prandom_u32();
+ newinet->inet_id = get_random_u16();
newinet->uc_ttl = inet->uc_ttl;
newinet->mc_loop = 1;
diff --git a/net/sunrpc/auth_gss/gss_krb5_wrap.c b/net/sunrpc/auth_gss/gss_krb5_wrap.c
index 5f96e75f9eecfdab7424ac5c421d53bb637546b4..48337687848c6654fdcfe08fe26d10a5fda12b62 100644
--- a/net/sunrpc/auth_gss/gss_krb5_wrap.c
+++ b/net/sunrpc/auth_gss/gss_krb5_wrap.c
@@ -130,8 +130,8 @@ gss_krb5_make_confounder(char *p, u32 conflen)
/* initialize to random value */
if (i == 0) {
- i = prandom_u32();
- i = (i << 32) | prandom_u32();
+ i = get_random_u32();
+ i = (i << 32) | get_random_u32();
}
switch (conflen) {
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index c3c693b51c94582766e00a0e816c748512e76c47..f075a9fb5ccc6cf5a008c44ac391436689f2d030 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -677,7 +677,7 @@ static void cache_limit_defers(void)
/* Consider removing either the first or the last */
if (cache_defer_cnt > DFR_MAX) {
- if (prandom_u32() & 1)
+ if (prandom_u32_max(2))
discard = list_entry(cache_defer_list.next,
struct cache_deferred_req, recent);
else
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 71dc2637344416d560b036e40f7acc54a2fffd4f..656cec2083718580f9060e9a370e88b95e5c4b4d 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1865,7 +1865,7 @@ xprt_alloc_xid(struct rpc_xprt *xprt)
static void
xprt_init_xid(struct rpc_xprt *xprt)
{
- xprt->xid = prandom_u32();
+ xprt->xid = get_random_u32();
}
static void
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index f34d5427b66ce578a60c32acd2a784bfd662ba9a..915b9902f673b2ace31daaf86ce532bc0b6523f1 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1619,7 +1619,7 @@ static int xs_get_random_port(void)
if (max < min)
return -EADDRINUSE;
range = max - min + 1;
- rand = (unsigned short) prandom_u32() % range;
+ rand = prandom_u32_max(range);
return rand + min;
}
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index f1c3b8eb4b3d3356070f77f7065591bd23681480..e902b01ea3cb189ac560e531bd25c7068fe9e322 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -3010,7 +3010,7 @@ static int tipc_sk_insert(struct tipc_sock *tsk)
struct net *net = sock_net(sk);
struct tipc_net *tn = net_generic(net, tipc_net_id);
u32 remaining = (TIPC_MAX_PORT - TIPC_MIN_PORT) + 1;
- u32 portid = prandom_u32() % remaining + TIPC_MIN_PORT;
+ u32 portid = prandom_u32_max(remaining) + TIPC_MIN_PORT;
while (remaining--) {
portid++;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 15dbb392c875bfcd5f697d6b09acff20a35e5eb5..b3545fc680979573c672ca232381c66aa14de6fa 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1147,7 +1147,7 @@ static int unix_autobind(struct sock *sk)
addr->name->sun_family = AF_UNIX;
refcount_set(&addr->refcnt, 1);
- ordernum = prandom_u32();
+ ordernum = get_random_u32();
lastnum = ordernum & 0xFFFFF;
retry:
ordernum = (ordernum + 1) & 0xFFFFF;
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 81df34b3da6ed5141760e7415a57fceb2de3a647..3d2fe7712ac5b4191830d9eb272f55b4e035b949 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2072,7 +2072,7 @@ int xfrm_alloc_spi(struct xfrm_state *x, u32 low, u32 high)
} else {
u32 spi = 0;
for (h = 0; h < high-low+1; h++) {
- spi = low + prandom_u32()%(high-low+1);
+ spi = low + prandom_u32_max(high - low + 1);
x0 = xfrm_state_lookup(net, mark, &x->id.daddr, htonl(spi), x->id.proto, x->props.family);
if (x0 == NULL) {
newspi = htonl(spi);