signals: annotate lock context change on ptrace_stop()
authorNamhyung Kim <namhyung@gmail.com>
Wed, 27 Oct 2010 22:34:07 +0000 (15:34 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 28 Oct 2010 01:03:12 +0000 (18:03 -0700)
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

index e921409b85a9e4aeef3599cdce1484ac475d021e..4e3cff10fdceda165e8e9f22c0e9b861dba918d8 100644 (file)
@@ -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(&current->sighand->siglock)
+       __acquires(&current->sighand->siglock)
 {
        if (arch_ptrace_stop_needed(exit_code, info)) {
                /*