public inbox for linux-kernel@vger.kernel.org
 help / color / mirror / Atom feed
* x86: WARNING: kernel stack frame pointer in kworker has bad value
@ 2017-01-23 18:43 Dmitry Vyukov
  2017-01-23 22:50 ` Josh Poimboeuf
  0 siblings, 1 reply; 5+ messages in thread
From: Dmitry Vyukov @ 2017-01-23 18:43 UTC (permalink / raw)
  To: Josh Poimboeuf, Thomas Gleixner, Ingo Molnar, H. Peter Anvin,
	x86@kernel.org, LKML
  Cc: syzkaller

Hello,

I am getting the following warnings while running syzkaller fuzzer on
7a308bb3016f57e5be11a677d15b821536419d36:

WARNING: kernel stack frame pointer at ffff880065f7fef8 in
kworker/1:3:21075 has bad value ffffffff81598080
unwind stack type:0 next_sp:          (null) mask:2 graph_idx:0
...

Here are 4 examples:

https://gist.githubusercontent.com/dvyukov/7258fca11e5c3db6e8f8fb684e6168ff/raw/2ca14f3c7294c7e466611f8ecfb3072c676a657c/gistfile1.txt
https://gist.githubusercontent.com/dvyukov/cc442b144ae712f0e1bdeb065085e36a/raw/f713cef7e9689914fc94838a0a7d4192224fb6d2/gistfile1.txt
https://gist.githubusercontent.com/dvyukov/9058cce2647e3d37157c283c6400498c/raw/7a8ec8d71b9e95eeb24156073eeef96ba61d95ea/gistfile1.txt
https://gist.githubusercontent.com/dvyukov/b899dfa72d611b511a674b63676921f3/raw/90203ed26b6674dedba8c1c16dd76309ef21fbea/gistfile1.txt

Unfortunately this is not reproducible, but there is a stack dump, so
maybe it's enough to figure out the root cause.

Thanks

^ permalink raw reply	[flat|nested] 5+ messages in thread
end of thread, other threads:[~2017-01-24 16:06 UTC | newest]

Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2017-01-23 18:43 x86: WARNING: kernel stack frame pointer in kworker has bad value Dmitry Vyukov
2017-01-23 22:50 ` Josh Poimboeuf
2017-01-24 13:37   ` Dmitry Vyukov
2017-01-24 15:48     ` Josh Poimboeuf
2017-01-24 16:06       ` Dmitry Vyukov

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox