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From: Theodore Ts'o <tytso@mit.edu>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: linux-ext4@vger.kernel.org,
	"user-mode-linux-devel@lists.sourceforge.net"
	<user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: fuzzying a user mode linux image often core dumps with
Date: Sat, 20 Jul 2013 21:03:52 -0400	[thread overview]
Message-ID: <20130721010352.GB21484@thunk.org> (raw)
In-Reply-To: <51EAA7A7.4000104@gmx.de>

On Sat, Jul 20, 2013 at 05:07:19PM +0200, Toralf Förster wrote:
> I do run the fuzzer trinity within a 32 bit user mode linux.
> With latest git tree I do often get a core dump like the one attached.
> 
> Although it is the nature of trinity to corrupt the kernel /me wonders why it happens nearly alway
> at the same place. That's why I decided to just report it here.

Thanks, this is a known problem for which the fix is can be found here:

	http://patchwork.ozlabs.org/patch/260250/

I hope to get this fixed before -rc2 is released; the only question at
the moment is whether the fix is going to go to Linus via the ext4
tree or the VFS tree....

					- Ted
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WARNING: multiple messages have this Message-ID (diff)
From: Theodore Ts'o <tytso@mit.edu>
To: "Toralf Förster" <toralf.foerster@gmx.de>
Cc: linux-ext4@vger.kernel.org,
	"user-mode-linux-devel@lists.sourceforge.net"
	<user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] fuzzying a user mode linux image often core dumps with
Date: Sat, 20 Jul 2013 21:03:52 -0400	[thread overview]
Message-ID: <20130721010352.GB21484@thunk.org> (raw)
In-Reply-To: <51EAA7A7.4000104@gmx.de>

On Sat, Jul 20, 2013 at 05:07:19PM +0200, Toralf Förster wrote:
> I do run the fuzzer trinity within a 32 bit user mode linux.
> With latest git tree I do often get a core dump like the one attached.
> 
> Although it is the nature of trinity to corrupt the kernel /me wonders why it happens nearly alway
> at the same place. That's why I decided to just report it here.

Thanks, this is a known problem for which the fix is can be found here:

	http://patchwork.ozlabs.org/patch/260250/

I hope to get this fixed before -rc2 is released; the only question at
the moment is whether the fix is going to go to Linus via the ext4
tree or the VFS tree....

					- Ted

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  reply	other threads:[~2013-07-21  1:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-20 15:07 fuzzying a user mode linux image often core dumps with Toralf Förster
2013-07-20 15:07 ` [uml-devel] " Toralf Förster
2013-07-21  1:03 ` Theodore Ts'o [this message]
2013-07-21  1:03   ` Theodore Ts'o
2013-07-21 11:14   ` Toralf Förster
2013-07-21 11:14     ` [uml-devel] " Toralf Förster

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