From b84011508360d6885a9d95a235ec77d56f133377 Mon Sep 17 00:00:00 2001
From: Namhyung Kim <namhyung@gmail.com>
Date: Wed, 27 Oct 2010 15:34:07 -0700
Subject: [PATCH] signals: annotate lock context change on ptrace_stop()
ptrace_stop() releases and regrabs current->sighand->siglock but was
missing proper annotation. Add it.
Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
kernel/signal.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/signal.c b/kernel/signal.c
index e921409b85a9..4e3cff10fdce 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1618,6 +1618,8 @@ static int sigkill_pending(struct task_struct *tsk)
* is gone, we keep current->exit_code unless clear_code.
*/
static void ptrace_stop(int exit_code, int clear_code, siginfo_t *info)
+ __releases(¤t->sighand->siglock)
+ __acquires(¤t->sighand->siglock)
{
if (arch_ptrace_stop_needed(exit_code, info)) {
/*
--
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