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Date: Wed, 07 Apr 2010 15:05:50 +0100 From: Paulo Marques <pmarques@...popie.com> To: Linux Kernel Mailing List <linux-kernel@...r.kernel.org> CC: Borislav Petkov <bp@...en8.de>, Andrew Morton <akpm@...ux-foundation.org>, Rik van Riel <riel@...hat.com>, Minchan Kim <minchan.kim@...il.com>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Lee Schermerhorn <Lee.Schermerhorn@...com>, Nick Piggin <npiggin@...e.de>, Andrea Arcangeli <aarcange@...hat.com>, Hugh Dickins <hugh.dickins@...cali.co.uk>, sgunderson@...foot.com Subject: Re: Ugly rmap NULL ptr deref oopsie on hibernate (was Linux 2.6.34-rc3) Linus Torvalds wrote: > [...] > So it once more is 'anon_vma->head.next' that is crap, but now it's not > NULL, it's that very odd 0x002e2e2e002e2e2e pattern (the %r13 has had 0x20 > subtracted from it, so that LSB of "0x0e" is actually _also_ a 0x2e). > > What does '0x2e' mean? It's ASCII '.', but that doesn't really mean > anything either. Just a wild shot in the dark: it can be a couple of gray pixels with intensity 0x2e at some 32 bits per pixel mode. I say this because of the zero bytes there and someone mentioning seeing the problem when starting X. -- Paulo Marques - www.grupopie.com "Don't worry, you'll be fine; I saw it work in a cartoon once..." -- 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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