Messages in this thread | | | Date | Fri, 20 May 2011 18:22:35 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: 2.6.39: crash w/threadirqs option enabled |
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On Fri, 20 May 2011, Justin Piszcz wrote: > On Fri, 20 May 2011, Thomas Gleixner wrote: > > > On Fri, 20 May 2011, Justin Piszcz wrote: > > > On Fri, 20 May 2011, Thomas Gleixner wrote: > > > > Does it crash right away or just when doing something particular? > > > It crashed at 2100, this is when I run a few I/O intensive processes: > > > - backup (dump ext4 filesystem -> to a separate raid device) > > > - backup (dump ext4 on remote host -> to separate raid device) > > > - backup (dump xfs on remote host -> to separate raid device) > > > > > > This looks like it is what caused it to crash. > > > > That narrows it down somewhat, but does not give us a clue at all :( > > > > > > Is the box fully dead after the crash ? > > > The host was online and I went away for awhile, when I came back the > > > system > > > had rebooted on its own (as I lost all of my X windows/etc). > > > > Hmm. Did you have panic_timeout set ? > > Hi, > > No, I do not use panic_timeout or any type of watchdog that would reboot > the system upon a lockup/crash.
Yuck, that means it ran into a triple fault. Nasty. I have no idea how to debug that at the moment and I was not able to reproduce on one of my test systems. Maybe I need to try harder.
Thanks,
tglx
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