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authorAlexander Levin <alexander.levin@verizon.com>2017-06-03 03:39:13 +0000
committerThomas Gleixner <tglx@linutronix.de>2017-06-03 09:28:45 +0200
commite5aeee51f6b4fb22e851105ee6d8ad211c40a214 (patch)
treece87eee9d18994da498c862b850b07a14a65d6cd /kernel/events
parent49dfe2a6779717d9c18395684ee31bdc98b22e53 (diff)
downloadlinux-e5aeee51f6b4fb22e851105ee6d8ad211c40a214.tar.bz2
perf/core: Don't release cred_guard_mutex if not taken
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> Cc: peterz@infradead.org Cc: rostedt@goodmis.org Cc: mathieu.desnoyers@efficios.com Cc: mhiramat@kernel.org Cc: paulmck@linux.vnet.ibm.com Cc: bigeasy@linutronix.de Link: http://lkml.kernel.org/r/20170603033903.12056-1-alexander.levin@verizon.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index b97cda4d1777..1f1b8cdaca2d 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.