2010-08-21 16:09:10

by Namhyung Kim

Subject: [PATCH] signals: annotate lock context on ptrace_stop()

ptrace_stop() is called within siglock context and releases it first and
reacquires but was missing proper annotations. Add it.

Signed-off-by: Namhyung Kim <[email protected]>
---
kernel/signal.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index c423fc5..fc505a7 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1621,6 +1621,8 @@ 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(&current->sighand->siglock)
+ __acquires(&current->sighand->siglock)
{
if (arch_ptrace_stop_needed(exit_code, info)) {
/*
--
1.7.0.4

2010-08-25 18:09:59

by Roland McGrath

Subject: Re: [PATCH] signals: annotate lock context on ptrace_stop()

Acked-by: Roland McGrath <[email protected]>