linux-kernel - Re: Problems with bdev_write

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Message-ID: <556391EE.7000106@cox.net>
Date:	Mon, 25 May 2015 14:19:42 -0700
From:	Charles Bertsch <cbertsch@....net>
To:	NeilBrown <neilb@...e.de>
CC:	Matthew Wilcox <matthew.r.wilcox@...el.com>,
	linux-raid@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
	"BertschC@....org" <BertschC@....org>
Subject: Re: Problems with bdev_write_page().

On 05/17/2015 12:02 AM, NeilBrown wrote:
>
>
> Hi Matthew,
>   I've just been looking at bdev_write_page().
> You can read about why here:
>
>    http://marc.info/?t=142984068300001&r=1&w=2
....
>
> Can you propose a fix for Charles, who can trigger this bug and nicely
> bisected it for us - thanks Charles!!!
>
This problem still occurs with 4.1.0-rc5 -- three stack traces attached.

Charles Bertsch



View attachment "linprob.stktrace.0525a.4.1-rc5.txt" of type "text/plain" (10612 bytes)

View attachment "linprob.stktrace.0525b.4.1-rc5.txt" of type "text/plain" (10813 bytes)

View attachment "linprob.stktrace.0525c.4.1-rc5.txt" of type "text/plain" (8672 bytes)