lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 7 Apr 2010 16:13:34 +0200 From: Borislav Petkov <bp@...64.org> To: Paulo Marques <pmarques@...popie.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, 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) From: Paulo Marques <pmarques@...popie.com> Date: Wed, Apr 07, 2010 at 03:05:50PM +0100 > 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. I don't think those are related: the problem when X was starting happens with Rik' newest patch and the funny %r13 value happened after enabling SLUB debugging last night. Thanks. -- Regards/Gruss, Boris. -- Advanced Micro Devices, Inc. Operating Systems Research Center -- 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/
Powered by blists - more mailing lists