| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.5 180/200] perf/core: Dont leak event in the syscall error path | Date | Mon, 2 May 2016 17:12:59 -0700 |
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4.5-stable review patch. If anyone has any objections, please let me know.
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From: Alexander Shishkin <alexander.shishkin@linux.intel.com>
commit 201c2f85bd0bc13b712d9c0b3d11251b182e06ae upstream.
In the error path, event_file not being NULL is used to determine whether the event itself still needs to be free'd, so fix it up to avoid leaking.
Reported-by: Leon Yu <chianglungyu@gmail.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Fixes: 130056275ade ("perf: Do not double free") Link: http://lkml.kernel.org/r/87twk06yxp.fsf@ashishki-desk.ger.corp.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- kernel/events/core.c | 1 + 1 file changed, 1 insertion(+)
--- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -8479,6 +8479,7 @@ SYSCALL_DEFINE5(perf_event_open, f_flags); if (IS_ERR(event_file)) { err = PTR_ERR(event_file); + event_file = NULL; goto err_context; }
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