Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/…

…kernel/git/rostedt/linux-trace into perf/urgent Pull syscall tracing fix from Steve Rostedt. Signed-off-by: Ingo Molnar <[email protected]>
k1132 · Aug 21, 2012 · 5c65ca7 · 5c65ca7
2 parents c7a3a88 + 60916a9
commit 5c65ca7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/kernel/trace/trace_syscalls.c b/kernel/trace/trace_syscalls.c
@@ -506,6 +506,8 @@ static void perf_syscall_enter(void *ignore, struct pt_regs *regs, long id)
 	int size;
 
 	syscall_nr = syscall_get_nr(current, regs);
+	if (syscall_nr < 0)
+		return;
 	if (!test_bit(syscall_nr, enabled_perf_enter_syscalls))
 		return;
 
@@ -580,6 +582,8 @@ static void perf_syscall_exit(void *ignore, struct pt_regs *regs, long ret)
 	int size;
 
 	syscall_nr = syscall_get_nr(current, regs);
+	if (syscall_nr < 0)
+		return;
 	if (!test_bit(syscall_nr, enabled_perf_exit_syscalls))
 		return;