On 05/14/2014 12:35 PM, Peter Zijlstra wrote: > On Wed, May 14, 2014 at 12:32:26PM -0400, Sasha Levin wrote: >> > -----BEGIN PGP SIGNED MESSAGE----- >> > Hash: SHA1 >> > >> > On 05/14/2014 12:29 PM, Peter Zijlstra wrote: >>> > > On Mon, May 12, 2014 at 11:42:33AM -0400, Sasha Levin wrote: >>>> > >> Hi all, >>>> > >> >>>> > >> While fuzzing with trinity inside a KVM tools guest running the >>>> > >> latest -next kernel I've stumbled on the following spew. Maybe >>>> > >> related to the very recent change in freeing on task exit? >>>> > >> >>>> > >> [ 2509.827261] general protection fault: 0000 [#1] PREEMPT SMP >>>> > >> DEBUG_PAGEALLOC [ 2509.830379] Dumping ftrace buffer: [ 2509.830379] >>>> > >> (ftrace buffer empty) [ 2509.830379] Modules linked in: [ >>>> > >> 2509.830379] CPU: 47 PID: 43306 Comm: trinity-c126 Tainted: G >>>> > >> W 3.15.0-rc5-next-20140512-sasha-00019-ga20bc00-dirty #456 >>> > > >>> > > Any particular trinity setup? And would you happen to have the seed of >>> > > that run? >> > >> > Nothing special about trinity options. 400 threads and blacklisting some >> > of the >> > destructive syscalls (umount, reboot, etc). >> > >> > I don't have the seed, but that problem did reproduce again tonight so I >> > can test >> > out debug code if you have something in mind. > Nah, I drew a pretty big blank, which is why I wanted to see if I could > reproduce. If you could share your trinity cmdline I'd be much obliged. > While I did manage to clone (the repo moved since last time) and build > it, I'm not really that handy with it and want to avoid destroying my > machine if possible ;-)
Anything I could do to help out with this? It reproduces pretty easily on my configuration so I'd be happy to test out whatever might help. Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
