Messages in this thread | | | Date | Sat, 17 May 2014 19:00:37 +0200 | From | Peter Zijlstra <> | Subject | Re: BUG_ON drivers/char/random.c:986 (Was: perf: use after free in perf_remove_from_context) |
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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] | |