From: Valdis.Kletnieks@vt.edu
To: Jens Axboe <jens.axboe@oracle.com>
Cc: Andrew Morton <akpm@osdl.org>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.20-rc3-mm1 - git-block.patch causes hard lockups
Date: Tue, 09 Jan 2007 13:03:18 -0500 [thread overview]
Message-ID: <200701091803.l09I3INT017978@turing-police.cc.vt.edu> (raw)
In-Reply-To: Your message of "Mon, 08 Jan 2007 09:55:24 +0100." <20070108085523.GS11203@kernel.dk>
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On Mon, 08 Jan 2007 09:55:24 +0100, Jens Axboe said:
> On Sat, Jan 06 2007, Valdis.Kletnieks@vt.edu wrote:
> > On Thu, 04 Jan 2007 22:02:00 PST, Andrew Morton said:
> >
> > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20-rc
3/2.6.20-rc3-mm1/
> >
> > With git-block.patch applied, my system locks up *hard* at system
> > shutdown time - even alt-sysrq doesn't do anything. Need to do the
> > "power button for 5" stunt to get the system back.
>
> Does this change anything?
>
> diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
> index ec40e44..bae57e0 100644
> --- a/block/ll_rw_blk.c
> +++ b/block/ll_rw_blk.c
> @@ -1542,7 +1542,7 @@ static inline void queue_sync_plugs(request_queue_t *q)
> * If the current process is plugged and has barriers submitted,
> * we will livelock if we don't unplug first.
> */
> - blk_unplug_current();
> + blk_replug_current_nested();
>
> synchronize_qrcu(&q->qrcu);
> }
Nope, still hangs exactly the same way. Maybe I need to get the watchdog
timer stuff working, and see if that can kick the system in a way that
produces a backtrace....
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next prev parent reply other threads:[~2007-01-09 18:03 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-05 6:02 2.6.20-rc3-mm1 Andrew Morton
2007-01-05 9:44 ` [-mm patch] lockdep: unbalance at generic_sync_sb_inodes Frederik Deweerdt
2007-01-05 12:16 ` [-mm patch] lockdep: possible deadlock in sysfs Frederik Deweerdt
2007-01-05 12:48 ` Oliver Neukum
2007-01-05 15:13 ` Oliver Neukum
2007-01-05 16:42 ` Frederik Deweerdt
2007-01-05 16:53 ` Oliver Neukum
2007-01-05 16:23 ` 2.6.20-rc3-mm1 Mariusz Kozlowski
2007-01-05 18:45 ` 2.6.20-rc3-mm1 Tim Schmielau
2007-01-08 12:36 ` 2.6.20-rc3-mm1 Mariusz Kozlowski
2007-01-05 20:55 ` 2.6.20-rc3-mm1 Benjamin Herrenschmidt
2007-01-05 21:15 ` 2.6.20-rc3-mm1 Andrew Morton
2007-01-05 21:24 ` 2.6.20-rc3-mm1 Benjamin Herrenschmidt
2007-01-08 19:32 ` 2.6.20-rc3-mm1 Cornelia Huck
2007-01-08 21:19 ` 2.6.20-rc3-mm1 Benjamin Herrenschmidt
2007-01-06 1:07 ` [-mm patch] make proc_dointvec_taint() static Adrian Bunk
2007-01-06 10:58 ` 2.6.20-rc3-mm1: umount reiser4 FS stuck in D state Laurent Riffard
2007-01-06 14:12 ` Laurent Riffard
2007-01-06 16:37 ` Jens Axboe
2007-01-06 18:58 ` Vladimir V. Saveliev
2007-01-12 22:56 ` Laurent Riffard
2007-01-23 16:40 ` Vladimir V. Saveliev
2007-01-23 15:46 ` Jens Axboe
2007-01-23 18:21 ` Laurent Riffard
2007-02-01 20:04 ` Edward Shishkin
2007-02-01 20:42 ` Laurent Riffard
2007-02-01 21:52 ` Edward Shishkin
2007-02-02 21:13 ` Laurent Riffard
2007-01-06 12:55 ` 2.6.20-rc3-mm1 - git-block.patch causes hard lockups Valdis.Kletnieks
2007-01-08 8:55 ` Jens Axboe
2007-01-09 18:03 ` Valdis.Kletnieks [this message]
2007-01-06 13:44 ` 2.6.20-rc3-mm1 - rewrite-lock-in-cpufreq-to-eliminate-cpufreq-hotplug-related-issues.patch Valdis.Kletnieks
2007-01-06 16:59 ` Mattia Dongili
2007-01-07 0:29 ` Valdis.Kletnieks
2007-01-06 15:20 ` 2.6.20-rc3-mm1 - reiser4-sb_sync_inodes.patch causes boot hang Valdis.Kletnieks
2007-01-06 19:14 ` Andrew Morton
2007-01-07 0:28 ` Valdis.Kletnieks
2007-01-09 14:40 ` [Re: 2.6.20-rc3-mm1] BUG: at kernel/sched.c:3415 sub_preempt_count() Maciej Rutecki
2007-01-09 15:28 ` Frederik Deweerdt
2007-01-09 20:50 ` Maciej Rutecki
2007-01-09 21:06 ` Frederik Deweerdt
2007-01-10 16:54 ` Maciej Rutecki
2007-01-11 18:28 ` [-mm patch] remove tcp header from tcp_v4_check Frederik Deweerdt
2007-01-12 16:08 2.6.20-rc3-mm1 - git-block.patch causes hard lockups Valdis.Kletnieks
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