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On Tue, 14 Mar 2006, Dave Jones wrote: > On Tue, Mar 14, 2006 at 09:22:35AM +0000, Hugh Dickins wrote: > > On Mon, 13 Mar 2006, Dave Jones wrote: > > > > > I got into the office today to find my workstation that was running > > > a kernel based on .16rc5-git9 was totally unresponsive. > > > After rebooting, I found this in the logs. > > > > > > slab signal_cache: invalid slab found in partial list at ffff8100e3a48080 (11/11). > > > slab signal_cache: invalid slab found in partial list at ffff81007ecc6100 (11/11). > > > slab: Internal list corruption detected in cache 'signal_cache'(11), slabp ffff810037ec0998(12). Hexdump: > > > > > > 000: c0 60 d9 7e 00 81 ff ff 00 61 cc 7e 00 81 ff ff > > > 010: a8 09 ec 37 00 81 ff ff a8 09 ec 37 00 81 ff ff > > > 020: 0c 00 00 00 00 00 00 00 57 d0 1d 07 01 00 00 00 > > > 030: 00 00 00 00 > > > ----------- [cut here ] --------- [please bite here ] --------- > > > Kernel BUG at mm/slab.c:2598 Thanks for the diff, that fitted together better. I spent several hours poring over your report, but came to no useful conclusions - sorry. As you probably noticed yourself, struct slab's colouroff and s_mem have been overwritten by a list_head; but I can't deduce anything illuminating from that. Less obvious and more interesting, is that the struct kmem_cache is being corrupted during the course of the output: it starts off saying in several places that cachep->num is 11, but ends up printing only one kmem_bufctl_t (aside from "free"): implying cachep->num 1 by then. Which may relate to how 11/11 was wrongly in the partial list. I'd be interested in the signal_cache line from your /proc/slabinfo, to see what cachep->num is usually in your configuration. But it's an idle interest: I won't have anything interesting to say, whatever it is... Anyone else? Hugh - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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