From: Tejun Heo <tj@kernel.org>
To: Peter Wu <lekensteyn@gmail.com>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Kernel development list <linux-kernel@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH] writeback: fix NULL dereference when device is gone
Date: Wed, 4 Sep 2013 14:21:17 -0400 [thread overview]
Message-ID: <20130904182117.GE26609@mtj.dyndns.org> (raw)
In-Reply-To: <2884335.eGSKV8oXr1@al>
Hello,
On Thu, Aug 29, 2013 at 12:31:11AM +0200, Peter Wu wrote:
> I applied your fix in the workfn, but now dd does not stop with EIO. If I run
> `sync`, then I see:
>
> [11882.645618] quiet_error: 591905 callbacks suppressed
> [11882.650589] Buffer I/O error on device sdd, logical block 129652880
> [11882.656850] lost page write due to I/O error on sdd
> [11882.661974] Buffer I/O error on device sdd, logical block 129652881
> ...
>
> Any other ideas? For now I will stick to the original patch. That probably
> does not solve the root issues, but it is at least a workaround to prevent the
> machine from locking up.
I'm out of ideas at the moment and maybe we should just stick to your
patch for now. :(
Thanks.
--
tejun
prev parent reply other threads:[~2013-09-04 18:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-18 1:08 [3.11-rc5..] NULL pointer dereference in bdi_writeback_workfn Alan Stern
2013-08-19 22:45 ` [PATCH] writeback: fix NULL dereference when device is gone Peter Wu
2013-08-19 23:02 ` Tejun Heo
2013-08-20 10:13 ` Peter Wu
2013-08-20 13:33 ` Tejun Heo
2013-08-28 22:31 ` Peter Wu
2013-09-04 18:21 ` Tejun Heo [this message]
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