lkml.org 
[lkml]   [2018]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: perf: perf_fuzzer quickly locks up on 4.15-rc7
On Tue, Jan 09, 2018 at 08:44:23AM -0500, Vince Weaver wrote:
> On Tue, 9 Jan 2018, Peter Zijlstra wrote:
>
> > So remind me again, how are you running that fuzzer? I'm running
> > ./fast_repro99.sh as root.
>
> I'm running ./fast_repro98.sh on a regular haswell machine with paranoid
> set to "0".
>
> I'll try your patch and see if it makes a difference.

I suspect not, it shouldn't be PTI specific.

> I can also try on a few other machines. I started setting up a fuzzing
> cluster for this kind of thing but the multiport serial card I got for
> logging the serial consoles crashes fairly quickly under load and I
> haven't had time to track that down.

So I don't think HSW has PT, which is something I cannot test on my IVB.
OTOH HSW has PEBS real_ip, but that uses _less_ magic.

In any case, I found yet another lockdep splat, trying to figure out wth
to do about that. Will then continue running with fast_repro98.

\
 
 \ /
  Last update: 2018-01-14 23:19    [W:0.158 / U:0.468 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site