diff options
| author | David S. Miller <davem@davemloft.net> | 2014-07-30 13:25:49 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-30 13:25:49 -0700 |
| commit | f139c74a8df071217dcd63f3ef06ae7be7071c4d (patch) | |
| tree | 5711f695577a18a06dbcd0101956e97b388ffa1a /arch/x86/kernel/cpu/perf_event.c | |
| parent | bd695a5f0ccf7b38982c426d86055ff3591c9b5b (diff) | |
| parent | 26bcd8b72563b4c54892c4c2a409f6656fb8ae8b (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c index 2bdfbff8a4f6..2879ecdaac43 100644 --- a/arch/x86/kernel/cpu/perf_event.c +++ b/arch/x86/kernel/cpu/perf_event.c @@ -118,6 +118,9 @@ static int x86_pmu_extra_regs(u64 config, struct perf_event *event) continue; if (event->attr.config1 & ~er->valid_mask) return -EINVAL; + /* Check if the extra msrs can be safely accessed*/ + if (!er->extra_msr_access) + return -ENXIO; reg->idx = er->idx; reg->config = event->attr.config1; |