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

2016-08-23 Thread Alexander Shishkin
Thanks! I'll get back to you with something better. On 23 August 2016 at 23:55, Vince Weaver wrote: > On Tue, 23 Aug 2016, Alexander Shishkin wrote: > >> Vince Weaver writes: >> >> > On Tue, 23 Aug 2016, Alexander Shishkin wrote: >> > >> >> Recently Vince has reported warnings and panics coming

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

2016-08-23 Thread Vince Weaver
On Tue, 23 Aug 2016, Alexander Shishkin wrote: > Vince Weaver writes: > > > On Tue, 23 Aug 2016, Alexander Shishkin wrote: > > > >> 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_

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

2016-08-23 Thread Alexander Shishkin
Vince Weaver writes: > On Tue, 23 Aug 2016, Alexander Shishkin wrote: > >> 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 trig

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

2016-08-23 Thread Vince Weaver
On Tue, 23 Aug 2016, Alexander Shishkin wrote: > 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 agai

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

2016-08-23 Thread 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 te