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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 26 Apr 2013 04:19:55 +0000 (21:19 -0700)
commitda307d100cd4979e353e8265d0691263aa2a0086
tree616b976a535fa6a9e8fdebcde048c9260d52897b
parenta3c21277df060c3c83b2aba4120d0370cf204d36
perf: Treat attr.config as u64 in perf_swevent_init()

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