From: Ted Ts'o <tytso@mit.edu>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Hugh Dickins <hughd@google.com>, Christoph Lameter <cl@linux.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4 Fix setting random pages PageUptodate
Date: Tue, 16 Nov 2010 15:38:54 -0500 [thread overview]
Message-ID: <20101116203854.GA1568@thunk.org> (raw)
In-Reply-To: <20101116111339.GA1544@arch.trippelsdorf.de>
On Tue, Nov 16, 2010 at 12:13:39PM +0100, Markus Trippelsdorf wrote:
> ext4_end_bio calls put_page and kmem_cache_free before calling
> SetPageUpdate(). This can result in setting the PageUptodate bit on
> random pages and causes the following BUG:
Oops. Thanks muchly to you and to Hugh for discovering this.
I've added this to the ext4 patch queue and will be pushing to Linus
this week, for -rc3.
- Ted
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WARNING: multiple messages have this Message-ID (diff)
From: "Ted Ts'o" <tytso@mit.edu>
To: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: Hugh Dickins <hughd@google.com>, Christoph Lameter <cl@linux.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
linux-ext4@vger.kernel.org
Subject: Re: [PATCH] ext4 Fix setting random pages PageUptodate
Date: Tue, 16 Nov 2010 15:38:54 -0500 [thread overview]
Message-ID: <20101116203854.GA1568@thunk.org> (raw)
In-Reply-To: <20101116111339.GA1544@arch.trippelsdorf.de>
On Tue, Nov 16, 2010 at 12:13:39PM +0100, Markus Trippelsdorf wrote:
> ext4_end_bio calls put_page and kmem_cache_free before calling
> SetPageUpdate(). This can result in setting the PageUptodate bit on
> random pages and causes the following BUG:
Oops. Thanks muchly to you and to Hugh for discovering this.
I've added this to the ext4 patch queue and will be pushing to Linus
this week, for -rc3.
- Ted
next prev parent reply other threads:[~2010-11-16 20:38 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-10 15:25 BUG: Bad page state in process (current git) Markus Trippelsdorf
2010-11-10 15:25 ` Markus Trippelsdorf
2010-11-10 15:40 ` Markus Trippelsdorf
2010-11-10 15:40 ` Markus Trippelsdorf
2010-11-10 21:46 ` Christoph Lameter
2010-11-10 21:46 ` Christoph Lameter
2010-11-12 12:20 ` Markus Trippelsdorf
2010-11-12 12:20 ` Markus Trippelsdorf
2010-11-15 12:38 ` Markus Trippelsdorf
2010-11-15 12:38 ` Markus Trippelsdorf
2010-11-15 19:54 ` Markus Trippelsdorf
2010-11-15 19:54 ` Markus Trippelsdorf
2010-11-15 21:23 ` Hugh Dickins
2010-11-15 21:23 ` Hugh Dickins
2010-11-15 21:23 ` Hugh Dickins
2010-11-16 11:13 ` [PATCH] ext4 Fix setting random pages PageUptodate Markus Trippelsdorf
2010-11-16 11:13 ` Markus Trippelsdorf
2010-11-16 11:13 ` Markus Trippelsdorf
2010-11-16 20:38 ` Ted Ts'o [this message]
2010-11-16 20:38 ` Ted Ts'o
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