Messages in this thread Patch in this message | | | Date | Sat, 26 Oct 2013 13:43:03 +0200 | From | Ingo Molnar <> | Subject | Re: [BUG 3.12.rc4] Oops: unable to handle kernel paging request during shutdown |
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* Linus Torvalds <torvalds@linux-foundation.org> wrote:
> On Fri, Oct 25, 2013 at 11:23 AM, Thomas Gleixner <tglx@linutronix.de> wrote: > > > > Enable DEBUG_OBJECTS, DEBUG_OBJECTS_FREE, DEBUG_OBJECTS_TIMERS > > Yes, but nobody has actually been able to trigger it with those. > It's pretty rare, and the debug options are so expensive that they > aren't reasonable to enable generally... > > So we need to try to figure out how to trigger it, or narrow > things down some way..
If it's timing then maybe the 1 seconds delay isn't enough (especially if it's boot related, where we have a couple of delays already) - the patch below triples it.
(If the bug goes away due to some other side effect then this patch won't make a difference to reproducability.)
Thanks,
Ingo
diff --git a/lib/kobject.c b/lib/kobject.c index 084f7b1..124188f 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -595,7 +595,7 @@ static void kobject_release(struct kref *kref) pr_info("kobject: '%s' (%p): %s, parent %p (delayed)\n", kobject_name(kobj), kobj, __func__, kobj->parent); INIT_DELAYED_WORK(&kobj->release, kobject_delayed_cleanup); - schedule_delayed_work(&kobj->release, HZ); + schedule_delayed_work(&kobj->release, 3*HZ); #else kobject_cleanup(kobj); #endif
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