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Date: Mon, 13 Sep 2010 15:19:08 GMT From: tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com, a.p.zijlstra@...llo.nl, tglx@...utronix.de, gorcunov@...il.com, mingo@...e.hu Subject: [tip:perf/core] perf: Fix free_event() Commit-ID: 0c67b40872326a5340cab51d79a192a5fbaeb484 Gitweb: http://git.kernel.org/tip/0c67b40872326a5340cab51d79a192a5fbaeb484 Author: Peter Zijlstra <a.p.zijlstra@...llo.nl> AuthorDate: Mon, 13 Sep 2010 11:15:58 +0200 Committer: Ingo Molnar <mingo@...e.hu> CommitDate: Mon, 13 Sep 2010 17:08:42 +0200 perf: Fix free_event() With the context rework stuff we can actually end up freeing an event before it gets attached to a context. Reported-by: Cyrill Gorcunov <gorcunov@...il.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@...e.hu> --- kernel/perf_event.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/kernel/perf_event.c b/kernel/perf_event.c index bc46bff..440f9ca 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -2150,7 +2150,9 @@ static void free_event(struct perf_event *event) if (event->destroy) event->destroy(event); - put_ctx(event->ctx); + if (event->ctx) + put_ctx(event->ctx); + call_rcu(&event->rcu_head, free_event_rcu); } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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