Commit 190fec72 authored Jun 12, 2024 by Jiri Olsa Committed by Masami Hiramatsu (Google) Jun 12, 2024

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>

parent 1713b63a

arch/x86/entry/syscalls/syscall_64.tbl

+1 −0

Original line number	Diff line number	Diff line
		@@ -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

include/linux/syscalls.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -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,

include/uapi/asm-generic/unistd.h

+4 −1

Original line number	Diff line number	Diff line
		@@ -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

kernel/sys_ni.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -392,3 +392,5 @@ COND_SYSCALL(setuid16);

		/* restartable sequence */
		COND_SYSCALL(rseq);

		COND_SYSCALL(uretprobe);