[vbox-dev] vbox kernel modules cause hardlock on kernel 4.2.0-rc2
ramshankar.venkataraman at oracle.com
Thu Jul 16 16:15:34 UTC 2015
Oops, misread your original report. It *is* the WARN panic. I'll try to
provide a test build soon to fix this issue.
> I'm not sure how that is happening.
> This changeset
> reverts to the old assumptions of the caller disabling preemption while
> calling preempt_notifier_register()/preempt_notifier_unregister().
> We would get into the "slower" path but i don't think that should really
> cause the kernel panic like before.
> We would need to call the newly introduced functions
> preempt_notifier_inc() and preempt_notifier_dec() but that should be a
> performance issue and not a fatal panic afaict unless "WARN" ends up
> panicking the system in which case it should be a different panic and
> not the original oops you posted.
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