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Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)
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From: Al Viro
Subject:
Re: [bug] crash when reading /proc/mounts (was: Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..)
Date: Wednesday, October 3, 2007 - 7:26 am
On Wed, Oct 03, 2007 at 04:08:42PM +0200, Ingo Molnar wrote:
quoted text
> > Charming... So we get d_path() either returning junk or we get > > something that isn't NUL-terminated. Which one it is? I.e. what does > > p look like and what's in s? > > could be use-after-free as well, as CONFIG_PAGEALLOC was enabled.
Umm... d_path() had just written there, so use-after-free is not too likely to trigger page fault on read immediately afterwards - you'd need a pretty tight race to hit it. -
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Messages in current thread:
Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Linus Torvalds
, (Mon Oct 1, 8:41 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Thomas Gleixner
, (Tue Oct 2, 2:17 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andi Kleen
, (Tue Oct 2, 2:21 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Jeff Garzik
, (Tue Oct 2, 3:37 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andi Kleen
, (Tue Oct 2, 3:48 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Thomas Gleixner
, (Tue Oct 2, 4:05 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Jiri Kosina
, (Tue Oct 2, 5:04 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Mel Gorman
, (Tue Oct 2, 5:07 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Tue Oct 2, 5:15 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Tue Oct 2, 7:07 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andi Kleen
, (Tue Oct 2, 7:23 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Tue Oct 2, 7:31 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, John Stoffel
, (Tue Oct 2, 7:44 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andi Kleen
, (Tue Oct 2, 7:54 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Sam Ravnborg
, (Tue Oct 2, 7:58 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Tue Oct 2, 8:03 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andi Kleen
, (Tue Oct 2, 8:24 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Tue Oct 2, 8:27 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Thomas Gleixner
, (Tue Oct 2, 8:30 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Sam Ravnborg
, (Tue Oct 2, 8:40 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, John Stoffel
, (Tue Oct 2, 8:45 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Mel Gorman
, (Tue Oct 2, 10:21 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Andrew Morton
, (Tue Oct 2, 1:11 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Rafael J. Wysocki
, (Tue Oct 2, 1:12 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Rafael J. Wysocki
, (Tue Oct 2, 1:31 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Roland Dreier
, (Tue Oct 2, 1:32 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Bill Davidsen
, (Tue Oct 2, 3:09 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Bill Davidsen
, (Tue Oct 2, 3:13 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Willy Tarreau
, (Tue Oct 2, 3:44 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Alistair John Strachan
, (Tue Oct 2, 3:51 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Glauber de Oliveira ...
, (Tue Oct 2, 4:00 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Diego Calleja
, (Tue Oct 2, 4:07 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Linus Torvalds
, (Tue Oct 2, 4:32 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Mel Gorman
, (Tue Oct 2, 5:37 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Eric St-Laurent
, (Tue Oct 2, 8:53 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Wed Oct 3, 1:19 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Wed Oct 3, 1:21 am)
[bug] crash when reading /proc/mounts (was: Re: Linux 2.6. ...
, Ingo Molnar
, (Wed Oct 3, 1:46 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 1:50 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 2:12 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 2:23 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Mel Gorman
, (Wed Oct 3, 5:51 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Al Viro
, (Wed Oct 3, 6:34 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 7:08 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Timo Jantunen
, (Wed Oct 3, 7:21 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Al Viro
, (Wed Oct 3, 7:26 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Linus Torvalds
, (Wed Oct 3, 8:11 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Arjan van de Ven
, (Wed Oct 3, 8:12 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Diego Calleja
, (Wed Oct 3, 8:28 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 8:40 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Linus Torvalds
, (Wed Oct 3, 8:47 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 8:49 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Alan Cox
, (Wed Oct 3, 8:51 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Linus Torvalds
, (Wed Oct 3, 9:07 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Ingo Molnar
, (Wed Oct 3, 9:07 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Linus Torvalds
, (Wed Oct 3, 9:09 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Jan Engelhardt
, (Wed Oct 3, 9:25 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Linus Torvalds
, (Wed Oct 3, 10:07 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Jeff Garzik
, (Wed Oct 3, 12:07 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Linus Torvalds
, (Wed Oct 3, 12:25 pm)
[patch] net, 9p: build fix with !CONFIG_SYSCTL
, Ingo Molnar
, (Thu Oct 4, 4:55 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Adrian Bunk
, (Thu Oct 4, 7:12 am)
Re: [bug] crash when reading /proc/mounts (was: Re: Linux ...
, Alexey Dobriyan
, (Thu Oct 4, 8:08 am)
[BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 10:05 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Peter Zijlstra
, (Thu Oct 4, 10:17 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Linus Torvalds
, (Thu Oct 4, 10:27 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 1:44 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 1:47 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Linus Torvalds
, (Thu Oct 4, 2:21 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Chuck Ebbert
, (Thu Oct 4, 2:50 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 2:54 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 2:58 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Paul Mackerras
, (Thu Oct 4, 3:27 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Linus Torvalds
, (Thu Oct 4, 5:12 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Mathieu Chouquet-Str ...
, (Thu Oct 4, 8:22 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Thu Oct 4, 10:38 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Thu Oct 4, 10:41 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Sam Ravnborg
, (Thu Oct 4, 11:11 pm)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Peter Zijlstra
, (Fri Oct 5, 12:43 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Thomas Gleixner
, (Fri Oct 5, 1:32 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Hans-Peter Jansen
, (Sat Oct 6, 1:29 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Hans-Peter Jansen
, (Sat Oct 6, 4:29 am)
Re: [BUG] Linux 2.6.23-rc9 and MAX_ARG_PAGES
, Bill Davidsen
, (Sat Oct 6, 10:36 am)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Alistair John Strachan
, (Sun Oct 7, 4:44 pm)
Re: Linux 2.6.23-rc9 and a heads-up for the 2.6.24 series..
, Ingo Molnar
, (Mon Oct 22, 8:56 am)
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