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| author | Arjan van de Ven <arjan@linux.intel.com> | 2009-07-21 09:55:05 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-07-22 18:29:52 +0200 |
| commit | 0dc3d523e8bc4718e0be2e4a742367d6e4be77cd (patch) | |
| tree | fca11240e17b99220f83c16ca79eabe6688be7a3 /kernel/perf_counter.c | |
| parent | Merge branch 'linux-next' of git://git.infradead.org/ubi-2.6 (diff) | |
| download | linux-0dc3d523e8bc4718e0be2e4a742367d6e4be77cd.tar.xz linux-0dc3d523e8bc4718e0be2e4a742367d6e4be77cd.zip | |
perf: fix stack data leak
the "reserved" field was not initialized to zero, resulting in 4 bytes
of stack data leaking to userspace....
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/perf_counter.c')
| -rw-r--r-- | kernel/perf_counter.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index a641eb753b8c..7bc888dfd06a 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -2665,6 +2665,7 @@ static void perf_counter_output(struct perf_counter *counter, int nmi, header.size += sizeof(cpu_entry); cpu_entry.cpu = raw_smp_processor_id(); + cpu_entry.reserved = 0; } if (sample_type & PERF_SAMPLE_PERIOD) |