On Sat, Feb 15, 2014 at 06:27:52PM -0500, Sasha Levin wrote: > Hi folks, > > While fuzzing with trinity inside a KVM tools guest running latest -next > kernel, I've > stumbled on the following: > > [ 522.645288] BUG: unable to handle kernel NULL pointer dereference at > 0000000000000150 > [ 522.646271] IP: [<ffffffff81186c6f>] check_preempt_wakeup+0x11f/0x210 > > Since it's pretty inlined, the code points to: > > check_preempt_wakeup() > find_matching_se() > find_matching_se() > check_preempt_wakeup() > > > static inline struct cfs_rq * > is_same_group(struct sched_entity *se, struct sched_entity *pse) > { > if (se->cfs_rq == pse->cfs_rq) <=== HERE > return se->cfs_rq; > > return NULL; > }
Hrm.. that means we got se->depth wrong. I'll have a poke tomorrow. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/