Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [ 16/23] perf: Treat attr.config as u64 in perf_swevent_init() | Date | Tue, 23 Apr 2013 14:56:23 -0700 |
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3.0-stable review patch. If anyone has any objections, please let me know.
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From: Tommi Rantala <tt.rantala@gmail.com>
commit 8176cced706b5e5d15887584150764894e94e02f upstream.
Trinity discovered that we fail to check all 64 bits of attr.config passed by user space, resulting to out-of-bounds access of the perf_swevent_enabled array in sw_perf_event_destroy().
Introduced in commit b0a873ebb ("perf: Register PMU implementations").
Signed-off-by: Tommi Rantala <tt.rantala@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: davej@redhat.com Cc: Paul Mackerras <paulus@samba.org> Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Link: http://lkml.kernel.org/r/1365882554-30259-1-git-send-email-tt.rantala@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- kernel/events/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -5440,7 +5440,7 @@ static void sw_perf_event_destroy(struct static int perf_swevent_init(struct perf_event *event) { - int event_id = event->attr.config; + u64 event_id = event->attr.config; if (event->attr.type != PERF_TYPE_SOFTWARE) return -ENOENT;
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