linux-kernel - Re: Oops when using growisofs

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200806250342.08575.arnd@arndb.de>
Date:	Wed, 25 Jun 2008 03:42:08 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Michael Buesch <mb@...sch.de>
Cc:	Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@....cz>
Subject: Re: Oops when using growisofs

On Tuesday 24 June 2008, Michael Buesch wrote:
> >   I have seen one more report of this Oops for SLES10 kernel and also in that
> > case an IO error happened so probably that is a trigger... But so far I
> > don't get the details.
> 
> Yeah the IO error is the trigger.
> I noticed that it had obvious troubles accessing the DVD that was in the drive.
> It sweeped over it for several seconds, then hung the system for 2 or 3 seconds
> and then oopsed. But after that everything continued to work as usual.
> (Except kded of course)

So maybe a use-after-free bug in the I/O error handling caused an inode to
be overwritten and then passed to an I/O function that used an invalid
inode->i_blkbits?

	Arnd <><
--
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/