From: Liu Bo <liubo2009@cn.fujitsu.com>
To: helmut@hullen.de
Cc: linux-btrfs@vger.kernel.org
Subject: Re: kernel 3.3.4 damages filesystem (?)
Date: Mon, 07 May 2012 20:53:41 +0800 [thread overview]
Message-ID: <4FA7C5D5.60306@cn.fujitsu.com> (raw)
In-Reply-To: <C8PBkd9uCXB@helmut.hullen.de>
On 05/07/2012 06:46 PM, Helmut Hullen wrote:
> btrfs: error reading free space cache
> BUG: unable to handle kernel NULL pointer dereference at 00000001
> IP: [<c1295c36>] io_ctl_drop_pages+0x26/0x50
> *pdpt = 0000000029712001 *pde = 0000000000000000
> Oops: 0002 [#1]
Could you please try this and show us the results?
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index 202008e..ae514ad 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -296,7 +296,9 @@ static void io_ctl_free(struct io_ctl *io_ctl)
static void io_ctl_unmap_page(struct io_ctl *io_ctl)
{
if (io_ctl->cur) {
- kunmap(io_ctl->page);
+ WARN_ON(!io_ctl->page);
+ if (io_ctl->page)
+ kunmap(io_ctl->page);
io_ctl->cur = NULL;
io_ctl->orig = NULL;
}
next prev parent reply other threads:[~2012-05-07 12:53 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-07 10:46 kernel 3.3.4 damages filesystem (?) Helmut Hullen
2012-05-07 10:58 ` Fajar A. Nugraha
2012-05-07 12:06 ` Helmut Hullen
2012-05-07 10:59 ` Hugo Mills
2012-05-07 12:15 ` Helmut Hullen
2012-05-07 13:34 ` Helmut Hullen
2012-05-07 14:05 ` Hugo Mills
2012-05-07 16:36 ` Helmut Hullen
2012-05-07 17:13 ` Felix Blanke
2012-05-07 17:52 ` Helmut Hullen
2012-05-07 18:00 ` Hugo Mills
2012-05-07 18:25 ` Helmut Hullen
2012-05-07 18:44 ` Hugo Mills
2012-05-09 13:04 ` failed disk (was: kernel 3.3.4 damages filesystem (?)) Helmut Hullen
2012-05-09 13:19 ` Hugo Mills
2012-05-09 14:25 ` Helmut Hullen
2012-05-09 14:37 ` Hugo Mills
2012-05-09 15:14 ` failed disk Helmut Hullen
2012-05-09 15:33 ` Hugo Mills
2012-05-09 18:49 ` Helmut Hullen
2012-05-09 16:13 ` failed disk (was: kernel 3.3.4 damages filesystem (?)) Ilya Dryomov
2012-05-10 2:49 ` failed disk Helmut Hullen
2012-05-07 19:30 ` kernel 3.3.4 damages filesystem (?) Daniel Lee
2012-05-07 20:21 ` Helmut Hullen
2012-05-07 20:51 ` Daniel Lee
2012-05-07 21:17 ` Helmut Hullen
2012-05-07 21:27 ` cwillu
2012-05-07 22:07 ` Martin Steigerwald
2012-05-08 7:39 ` Helmut Hullen
2012-05-08 7:44 ` Fajar A. Nugraha
2012-05-08 10:00 ` Helmut Hullen
2012-05-08 10:41 ` Clemens Eisserer
2012-05-08 13:13 ` Helmut Hullen
2012-05-08 13:44 ` Felix Blanke
2012-05-08 13:52 ` Hugo Mills
2012-05-08 16:53 ` Helmut Hullen
2012-05-08 17:24 ` Felix Blanke
2012-05-08 18:29 ` Helmut Hullen
2012-05-08 18:41 ` Felix Blanke
2012-05-08 19:12 ` David Sterba
2012-05-08 19:34 ` Helmut Hullen
2012-05-08 20:02 ` Hugo Mills
2012-05-08 20:19 ` Helmut Hullen
2012-05-08 20:56 ` Roman Mamedov
2012-05-09 14:46 ` Kaspar Schleiser
2012-05-10 10:40 ` Martin Steigerwald
2012-05-10 11:55 ` feature request (was: kernel 3.3.4 damages filesystem (?)) Helmut Hullen
2012-05-10 19:43 ` kernel 3.3.4 damages filesystem (?) Hubert Kario
2012-05-10 20:15 ` Hugo Mills
2012-05-10 20:23 ` Hubert Kario
2012-05-08 21:42 ` Hubert Kario
2012-05-07 12:53 ` Liu Bo [this message]
2012-05-09 17:32 ` Duncan
2012-05-09 18:06 ` Atila
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