linux-ext4 - Re: next-20090206: deadlock on ext4

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]

Date:	Mon, 9 Feb 2009 15:01:13 +0300
From:	Alexander Beregalov <a.beregalov@...il.com>
To:	Eric Sandeen <sandeen@...hat.com>
Cc:	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	linux-ext4@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: next-20090206: deadlock on ext4

2009/2/6 Eric Sandeen <sandeen@...hat.com>:
> Alexander Beregalov wrote:
>> 2009/2/6 Eric Sandeen <sandeen@...hat.com>:
>>> Alexander Beregalov wrote:
>>>> Hi
>>>>
>>>> I run dbench on ext4 on loop device.
>>>>
>>>> EXT4-fs: barriers enabled
>>>> kjournald2 starting: pid 2420, dev loop0:8, commit interval 5 seconds
>>>> EXT4 FS on loop0, internal journal on loop0:8
>>>> EXT4-fs: delayed allocation enabled
>>>> EXT4-fs: file extents enabled
>>>> EXT4-fs: mballoc enabled
>>>> EXT4-fs: mounted filesystem loop0 with ordered data mode
>>>> JBD: barrier-based sync failed on loop0:8 - disabling barriers
>>>>
>>>> INFO: task pdflush:2339 blocked for more than 120 seconds.
>>> Looks a lot like a bug I filed:
>>>
>>> http://bugzilla.kernel.org/show_bug.cgi?id=12579
>>>
>>> but I'm having trouble reproducing it, now.  I'll try dbench!
>> Yes, I can reproduce it easy with dbench.
>
> Do you only hit it on loopback?  What is the filesystem hosting the loop
> file?

I have reproduced it with 2.6.29-rc4.
Loop file was on XFS.
I can not reproduce it on ext4 on raw device.
Let me know if I can do anything else to help resolving it.
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html