Auto-Reboot on Kernel BUG (not tainted, “fixing recursive fault but reboot is needed”)

Asked Nov 07 '15 at 20:50

Active Dec 14 '17 at 14:58

Viewed 1,135 times

I'm running a sometimes highly loaded Debian 7 VM with the latest 3.2.x kernel on a XenServer 6.2 host.

Sometimes this VM runs into the following state:

Ping is okay, All Services unreachable (including SSH)
A message showing a trace + "kernel BUG" shows up
Further below the error message “fixing recursive fault but reboot is needed” is shown

sysctl kernel.panic=1 is already set. This has no effect in this case. The machine does not reboot.

How is is possible to let the machine reboot itself after such a fault (since this is no OOPS, right?)?

Ideally before rebooting a sync of filesystems and ro mount would be nice...

I know about SysRQ but I'm searching a solution which does work without manual intervention.

Thank you! :)

edited Dec 14 '17 at 14:58

asked Nov 07 '15 at 20:50

Julian Kessel

Were you able to figure this out? Thanks! – Mark Avenius Jul 20 '17 at 23:10
@MarkAvenius I think in the end I stayed with kernel.panic setting and it worked somehow. I don't find it in my current sysctl config actually anymore. Didn't kernel.panic work for you either as it seemed to me 2y ago? – Julian Kessel Jul 22 '17 at 15:33
This is reappearing to me unfortunately... No fix found still @MarkAvenius – Julian Kessel Dec 12 '17 at 14:54
Can you get more of the error than is shown in your screenshot? Check your logs, or try increasing the screen resolution. – Michael Hampton Dec 14 '17 at 18:16

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