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Date: Fri, 03 Aug 2007 22:46:14 +0200 From: Philipp Tölke <philipptoelke@....de> To: Andrew Morton <akpm@...ux-foundation.org> CC: linux-kernel@...r.kernel.org, dm-devel@...hat.com, Christophe Saout <christophe@...ut.de>, Alasdair G Kergon <agk@...hat.com> Subject: Re: PROBLEM: Oops when using dm-crypt with dpt_i2o Hi Andrew, hi everybody! Thanks for the reply! Andrew Morton wrote: >> The oopses: >> >> #v+ >> BUG: unable to handle kernel paging request at virtual address 14001000 >> [...] > > So it looks like q->request_fn points at 0x14001000, which is in outer > space. > > I wonder how that could happen, in the middle of heavy IO operations. > Possibly a memory scribble. I'd suggest you enable CONFIG_SLAB, > CONFIG_DEBUG_SLAB, CONFIG_DEBUG_PAGEALLOC. That doesn't change anything, apart from adding a line "DEBUG_PAGEALLOC" to the oopses. Do I have to enable the debugging manually? After a quick grep over the sources and a google-session I think not but I'm no kernel-hacker. > You could also try switching > from CONFIG_SLAB to CONFIG_SLUB, then enable CONFIG_SLUB_DEBUG. Unfortunately the only change seems to be, that the Keyboard-Leds don't flash after the crash. Everything else is the same. Could a hardware-error cause this? Thanks again, -- Philipp Tölke - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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