Re: perf_fuzzer crash on pentium 4

Vince Weaver
2014-05-06T16:02:08Z

On Tue, 6 May 2014, Cyrill Gorcunov wrote:

> On Tue, May 06, 2014 at 05:46:37PM +0200, Peter Zijlstra wrote:
> > On Tue, May 06, 2014 at 11:42:58AM -0400, Vince Weaver wrote:
> > >
> > > So just to be difficult I fired up the perf_fuzzer on a Pentium 4 machine.
> > >
> > > It crashes more or less instantly (sorry for the line wrapping,
> > > just got the serial console hooked up and don't have minicom configured
> > > right yet).
> > >
> > > this is 3.15-rc4 with the anti-memory corruption patch applied.
> >
> > *sigh*.. the one x86 PMU driver I really don't know. I might actually
> > have some P4 class hardware, I'll try and get it wired up this week
> > somewhere.
>
> I'll take a look, thanks.

This happens quickly enough I can probably generate a small test case, but
I won't have time to do that until maybe tomorrow.

Vince