Messages in this thread | | | Date | Thu, 20 Feb 2003 04:12:16 -0800 | From | William Lee Irwin III <> | Subject | Re: doublefault debugging (was Re: Linux v2.5.62 --- spontaneous reboots) |
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On Thu, Feb 20, 2003 at 12:46:51PM +0100, Ingo Molnar wrote: > i think i managed to trigger a potentially useful oops, with BK-curr: > Stack: c02dd6ac 0000002b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b8b 6b6b6b6b 6b6b6b6b > 6b6b6b6b 00030001 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b > 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b 6b6b6b6b
Looks like some kind of serious use-after-free slab issue. IF is clear, so we aren't under spin_lock_irq(&rq->lock) on the initial fault. It might be interesting to find a way to trap it earlier. Reproducible? If so, how?
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