diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-10-06 15:02:30 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-10-06 15:02:34 +0200 |
| commit | d9b2002c406011164f245de7a81304625989f1c9 (patch) | |
| tree | a2bb74773cd1409acbec5eb2fbba2ae9889d55e8 /kernel/ptrace.c | |
| parent | c3b32fcbc7f4fd9a9b84718b991b175b0fd53f8c (diff) | |
| parent | 906010b2134e14a2e377decbadd357b3d0ab9c6a (diff) | |
Merge branch 'perf/urgent' into perf/core
Merge reason: Upcoming patch is dependent on a fix in perf/urgent.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/ptrace.c')
| -rw-r--r-- | kernel/ptrace.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/ptrace.c b/kernel/ptrace.c index 307c285af59..23bd09cd042 100644 --- a/kernel/ptrace.c +++ b/kernel/ptrace.c @@ -266,9 +266,10 @@ static int ignoring_children(struct sighand_struct *sigh) * or self-reaping. Do notification now if it would have happened earlier. * If it should reap itself, return true. * - * If it's our own child, there is no notification to do. - * But if our normal children self-reap, then this child - * was prevented by ptrace and we must reap it now. + * If it's our own child, there is no notification to do. But if our normal + * children self-reap, then this child was prevented by ptrace and we must + * reap it now, in that case we must also wake up sub-threads sleeping in + * do_wait(). */ static bool __ptrace_detach(struct task_struct *tracer, struct task_struct *p) { @@ -278,8 +279,10 @@ static bool __ptrace_detach(struct task_struct *tracer, struct task_struct *p) if (!task_detached(p) && thread_group_empty(p)) { if (!same_thread_group(p->real_parent, tracer)) do_notify_parent(p, p->exit_signal); - else if (ignoring_children(tracer->sighand)) + else if (ignoring_children(tracer->sighand)) { + __wake_up_parent(p, tracer); p->exit_signal = -1; + } } if (task_detached(p)) { /* Mark it as in the process of being reaped. */ |