lkml.org 
[lkml]   [2014]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: BUG_ON drivers/char/random.c:986 (Was: perf: use after free in perf_remove_from_context)
On Sat, May 17, 2014 at 12:24:32PM -0400, Sasha Levin wrote:
> On 05/16/2014 10:18 PM, Theodore Ts'o wrote:
> > On Fri, May 16, 2014 at 05:46:22PM -0700, Hannes Frederic Sowa wrote:
> >> > This should do the trick:
> >> > dd if=/dev/urandom of=/dev/zero bs=67108707
> >> >
> >> > I suspect ee1de406ba6eb1 ("random: simplify accounting logic") as the
> >> > culprit.
> > Yep, that it's it. Thanks for noticing this so quickly! I'll push
> > the following patch to Linus.
>
> Peter, could you describe the infrastructure you're running on? I don't
> think Dave or myself have ever hit this issue, and I wonder what made you
> stumble on it.

I'm running it on a WSP-EP, 2 nodes, 6 cores per node, 2 threads per
core for a total of 24 cpus.

I'm running trinity as user, and using:

MALLOC_CHECK_=0 ./trinity -xinit_module -xreboot -xshutdown -xunshare -xnfsservctl -xclock_nanosleep -xuselib -xumount -xmount -m --quiet -C 400 -l off -xmremap

to run it.

I'm currently also running with syscall and a few other trace bits
enabled, but I suppose that shouldn't affect things too much.

The machine is running Debian wheezy with a few choice testing bits.
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2014-05-17 19:41    [W:0.070 / U:0.628 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site