From 190fec72df4a5d4d98b1e783c333f471e5e5f344 Mon Sep 17 00:00:00 2001 From: Jiri Olsa <jolsa@kernel.org> Date: Wed, 12 Jun 2024 08:44:27 +0900 Subject: [PATCH] uprobe: Wire up uretprobe system call Wiring up uretprobe system call, which comes in following changes. We need to do the wiring before, because the uretprobe implementation needs the syscall number. Note at the moment uretprobe syscall is supported only for native 64-bit process. Link: https://lore.kernel.org/all/20240611112158.40795-3-jolsa@kernel.org/ Reviewed-by: Oleg Nesterov <oleg@redhat.com> Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org> --- arch/x86/entry/syscalls/syscall_64.tbl | 1 + include/linux/syscalls.h | 2 ++ include/uapi/asm-generic/unistd.h | 5 ++++- kernel/sys_ni.c | 2 ++ 4 files changed, 9 insertions(+), 1 deletion(-) diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl index a396f6e6ab5bf..6452c2ec469aa 100644 --- a/arch/x86/entry/syscalls/syscall_64.tbl +++ b/arch/x86/entry/syscalls/syscall_64.tbl @@ -384,6 +384,7 @@ 460 common lsm_set_self_attr sys_lsm_set_self_attr 461 common lsm_list_modules sys_lsm_list_modules 462 common mseal sys_mseal +463 64 uretprobe sys_uretprobe # # Due to a historical design error, certain syscalls are numbered differently diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 9104952d323d1..494f5e0f61f73 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -973,6 +973,8 @@ asmlinkage long sys_lsm_list_modules(u64 *ids, u32 *size, u32 flags); /* x86 */ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int on); +asmlinkage long sys_uretprobe(void); + /* pciconfig: alpha, arm, arm64, ia64, sparc */ asmlinkage long sys_pciconfig_read(unsigned long bus, unsigned long dfn, unsigned long off, unsigned long len, diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h index d983c48a3b6af..2378f88d5ad49 100644 --- a/include/uapi/asm-generic/unistd.h +++ b/include/uapi/asm-generic/unistd.h @@ -845,8 +845,11 @@ __SYSCALL(__NR_lsm_list_modules, sys_lsm_list_modules) #define __NR_mseal 462 __SYSCALL(__NR_mseal, sys_mseal) +#define __NR_uretprobe 463 +__SYSCALL(__NR_uretprobe, sys_uretprobe) + #undef __NR_syscalls -#define __NR_syscalls 463 +#define __NR_syscalls 464 /* * 32 bit systems traditionally used different diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c index d7eee421d4bc3..5ce9fa0dc1951 100644 --- a/kernel/sys_ni.c +++ b/kernel/sys_ni.c @@ -392,3 +392,5 @@ COND_SYSCALL(setuid16); /* restartable sequence */ COND_SYSCALL(rseq); + +COND_SYSCALL(uretprobe); -- GitLab