On Mon, Apr 16, 2018 at 10:58 AM, Greg Rose <gvrose8...@gmail.com> wrote:
> On RHEL 7.x kernels we observe a panic induced by a paging error
> when the timer kicks off a job that subsequently accesses memory
> that belonged to the openvswitch kernel module but was since
> unloaded - thus the paging error.
>
> The panic can be induced on any RHEL 7.x kernel with the following test:
>
> while `true`
> do
>     make check-kmod TESTSUITEFLAGS="-k \!gre"
> done
>
> On the systems I've been testing on it generally takes anywhere from a
> minute to 15 minutes or so to repro but never longer than that.  Similar
> results have been seen by other testers.
>
> This patch does not fix the underlying bug, which does need to be
> investigated and fixed, but it does prevent it from occurring. We
> would like to prevent customer systems from panicking while we do
> futher investigation to find the root cause.
>
Can you add stack trace to the commit ?
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