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| author |   Peter Zijlstra <a.p.zijlstra@chello.nl> | 2011-03-28 13:13:56 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@elte.hu> | 2011-03-31 13:02:56 +0200 |
| commit | fd1edb3aa2c1d92618d8f0c6d15d44ea41fcac6a (patch) | |
| tree | ae456f2e42966042790809d7590c31736aa05557 /kernel/perf_event.c | |
| parent | perf: Fix task context scheduling (diff) | |
| download | linux-dev-fd1edb3aa2c1d92618d8f0c6d15d44ea41fcac6a.tar.xz linux-dev-fd1edb3aa2c1d92618d8f0c6d15d44ea41fcac6a.zip | |
perf: Fix task_struct reference leak
sys_perf_event_open() had an imbalance in the number of task refs it
took causing memory leakage
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: stable@kernel.org # .37+
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/perf_event.c')
| -rw-r--r-- | kernel/perf_event.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 261690923ffb..27960f114efd 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -6531,6 +6531,11 @@ SYSCALL_DEFINE5(perf_event_open, goto err_alloc; } + if (task) { + put_task_struct(task); + task = NULL; + } + /* * Look up the group leader (we will attach this event to it): */ |