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(parent: 19de99f) | patch
bpf, trace: check event type in bpf_perf_event_read
authorAlexei Starovoitov <ast@fb.com>
Thu, 16 Jun 2016 01:25:39 +0000 (18:25 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 16 Jun 2016 06:37:54 +0000 (23:37 -0700)
commitad572d174787daa59e24b8b5c83028c09cdb5ddb
tree742f85968aea27bc975164e839dbc00312d3184atree | snapshot
parent19de99f70b87fcc3338da52a89c439b088cbff71commit | 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>
kernel/trace/bpf_trace.c diff | blob | history
Domain: System / Kernel;