perf: Treat attr.config as u64 in perf_swevent_init()
authorTommi Rantala <tt.rantala@gmail.com>
Sat, 13 Apr 2013 19:49:14 +0000 (22:49 +0300)
committerHarshada Kale <hkale@nvidia.com>
Wed, 15 May 2013 07:55:09 +0000 (00:55 -0700)
commit2061771cf4deec40d7683299e22c548c5076396d
tree4f2ebc88aa0a4b1f1eaded1bbefc3310721da0fb
parentd803d67de4cfe12e7544a3c7303e30c0e79b6708
perf: Treat attr.config as u64 in perf_swevent_init()

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>
(cherry picked from commit 8176cced706b5e5d15887584150764894e94e02f)

Change-Id: Ie1dd9b0d40980fbbf8499528964c01cc71efd46c
Signed-off-by: Bo Yan <byan@nvidia.com>
Reviewed-on: http://git-master/r/228455
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>
GVS: Gerrit_Virtual_Submit
kernel/events/core.c