Re: [PATCH] perf: Add check_period pmu callback

2019-02-11 Thread Peter Zijlstra
On Mon, Feb 04, 2019 at 01:35:32PM +0100, Jiri Olsa wrote: > Vince (and later on Ravi) reported crash in BTS code during > fuzzing with following backtrace: > > general protection fault: [#1] SMP PTI > ... > RIP: 0010:perf_prepare_sample+0x8f/0x510 > ... > Call Trace: > >? i

[PATCH] perf: Add check_period pmu callback

2019-02-04 Thread Jiri Olsa
On Sat, Feb 02, 2019 at 12:58:07PM -0500, Vince Weaver wrote: > On Fri, 1 Feb 2019, Jiri Olsa wrote: > > > > > > > I've just started fuzzing with the patch applied. Often it takes a few > > > hours to trigger the bug. > > > > cool, thanks > > I let it run overnight and no crash. > > > > Adde