diff options
| author | Arjan van de Ven <arjan@linux.intel.com> | 2009-07-21 00:55:05 -0700 |
|---|---|---|
| committer | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2009-07-22 18:05:55 +0200 |
| commit | c9f73a3dd27e03411f18a58c0814d51392d2b17a (patch) | |
| tree | 2b687a70433efc77f3f890bd5f09d31414d26f8e /kernel | |
| parent | 9b7019ae6a542a801a80df6694c66e240e2c3e39 (diff) | |
| download | linux-c9f73a3dd27e03411f18a58c0814d51392d2b17a.tar.gz linux-c9f73a3dd27e03411f18a58c0814d51392d2b17a.tar.bz2 linux-c9f73a3dd27e03411f18a58c0814d51392d2b17a.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>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Diffstat (limited to 'kernel')
| -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 5c6fae4f43d8..ff854fd89a81 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -2666,6 +2666,7 @@ 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) |