Re: frequent lockups in 3.18rc4

[Dave Jones]

On Sun, Dec 14, 2014 at 04:38:00PM -0800, Linus Torvalds wrote:
 > On Sun, Dec 14, 2014 at 3:46 PM, Dave Jones <davej@xxxxxxxxxx> wrote:
 > > On Sat, Dec 13, 2014 at 02:40:51PM -0800, Linus Torvalds wrote:
 > >  > On Sat, Dec 13, 2014 at 2:36 PM, Dave Jones <davej@xxxxxxxxxx> wrote:
 > >  > >
 > >  > > Ok, I think we can rule out preemption. I just checked on it, and
 > >  > > found it wedged.
 > >  >
 > >  > Ok, one more. Mind checking what happens without CONFIG_DEBUG_PAGEALLOC?
 > >
 > > Crap. Looks like it wedged. It's stuck that way until I get back to it
 > > on Wednesday.
 > 
 > Hey, this is not "crap" at all. Quite the reverse.

It was more a "Crap it's wedged and I can't do anything about it for days".
I didn't look closely at the actual traces this time.

 > DaveJ, do you have the kernel image for this? I'd love to see what the
 > code is around that "save_xstate_sig+0x81" or around those
 > __clear_user+0x17/0x36 points...
 
Not until I get back on Wednesday and reboot it.

	Dave
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/