Messages in this thread Patch in this message | | | From | "Levin, Alexander (Sasha Levin)" <> | Subject | [PATCH] perf/tracing/cpuhotplug: don't release cred_guard_mutex if not taken | Date | Sat, 3 Jun 2017 03:39:13 +0000 |
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From: Alexander Levin <alexander.levin@verizon.com>
If we failed to acquire task's cred_guard_mutex we shouldn't proceed to release it in the error path.
Fixes: a63fbed776c ("perf/tracing/cpuhotplug: Fix locking order") Signed-off-by: Alexander Levin <alexander.levin@verizon.com> --- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c index 8d6acaeeea17..8e8323c6036b 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -9878,7 +9878,7 @@ SYSCALL_DEFINE5(perf_event_open, if (task) { err = mutex_lock_interruptible(&task->signal->cred_guard_mutex); if (err) - goto err_cred; + goto err_task; /* * Reuse ptrace permission checks for now. -- 2.11.0
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