Re: perf/ring-buffer: Undefined behaviour in kernel/events/ring_buffer.c:685:22

2016-01-29 Thread Peter Zijlstra
On Fri, Jan 22, 2016 at 03:48:55PM +0300, Andrey Ryabinin wrote: > 2016-01-19 17:31 GMT+03:00 Peter Zijlstra : > > On Sun, Jan 10, 2016 at 03:55:13PM -0500, Sasha Levin wrote: > >> Hi all, > >> > >> While fuzzing with trinity inside a KVM tools guest, running the latest > >> -next > >> kernel, I'v

Re: perf/ring-buffer: Undefined behaviour in kernel/events/ring_buffer.c:685:22

2016-01-22 Thread Andrey Ryabinin
2016-01-19 17:31 GMT+03:00 Peter Zijlstra : > On Sun, Jan 10, 2016 at 03:55:13PM -0500, Sasha Levin wrote: >> Hi all, >> >> While fuzzing with trinity inside a KVM tools guest, running the latest -next >> kernel, I've hit the following warning: >> >> [ 3494.030114] UBSAN: Undefined behaviour in >>

Re: perf/ring-buffer: Undefined behaviour in kernel/events/ring_buffer.c:685:22

2016-01-21 Thread Sasha Levin
On 01/19/2016 09:31 AM, Peter Zijlstra wrote: > On Sun, Jan 10, 2016 at 03:55:13PM -0500, Sasha Levin wrote: >> Hi all, >> >> While fuzzing with trinity inside a KVM tools guest, running the latest -next >> kernel, I've hit the following warning: >> >> [ 3494.030114] UBSAN: Undefined behaviour in