[PATCH 0/3] perf, bts: Fallout from the fuzzer for perf/urgent

[Alexander Shishkin]

Hi,

Recently Vince has reported warnings and panics coming from the
general direction of AUX tracing. I found two bugs which manifest
similarly, one in intel_bts driver and one in AUX unmapping path.

Both are triggered by racing SET_OUTPUT against mmap_close while
running AUX tracing. I have a test case that set fire to the kernel
within a few seconds by doing this, which I can share if anyone
cares.

These are all good candidates for 4.7-stable and the BTS ones can be
theoretically backported further.

Alexander Shishkin (3):
  perf/x86/intel/bts: Fix confused ordering of PMU callbacks
  perf/x86/intel/bts: Kill a silly warning
  perf: Fix a race between mmap_close and set_output of AUX events

 arch/x86/events/intel/bts.c | 87 +++++++++++++++++++++++++++++++++------------
 kernel/events/core.c        | 31 ++++++++++++----
 2 files changed, 89 insertions(+), 29 deletions(-)

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2.8.1