| commit | ad572d174787daa59e24b8b5c83028c09cdb5ddb | [log] [tgz] |
|---|---|---|
| author | Alexei Starovoitov <ast@fb.com> | Wed Jun 15 18:25:39 2016 -0700 |
| committer | David S. Miller <davem@davemloft.net> | Wed Jun 15 23:37:54 2016 -0700 |
| tree | 742f85968aea27bc975164e839dbc00312d3184a | |
| parent | 19de99f70b87fcc3338da52a89c439b088cbff71 [diff] |
bpf, trace: check event type in bpf_perf_event_read
similar to bpf_perf_event_output() the bpf_perf_event_read() helper
needs to check the type of the perf_event before reading the counter.
Fixes: a43eec304259 ("bpf: introduce bpf_perf_event_output() helper")
Reported-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>