Re: perf, percpu: panic in account_event

2013-08-12 Thread Peter Zijlstra
On Mon, Aug 05, 2013 at 05:19:18PM -0400, Sasha Levin wrote: > Hi all, > > While fuzzing with trinity inside a KVM tools guest running latest -next > kernel, > I've stumbled on the following spew. > > It seems to happen on the following line in account_event(): > > if (event->attr.freq) >

perf, percpu: panic in account_event

2013-08-05 Thread Sasha Levin
Hi all, While fuzzing with trinity inside a KVM tools guest running latest -next kernel, I've stumbled on the following spew. It seems to happen on the following line in account_event(): if (event->attr.freq) atomic_inc(&per_cpu(perf_freq_events, cpu)); <--- here Which