[Btrfs-devel] Oops

[Christian Hesse]

On Saturday 08 December 2007, Yan Zheng wrote:
> 2007/12/8, Christian Hesse <list at eworm.de>:
> > Et voilà... the next one:
> > Dec  8 13:26:35 revo kernel BUG at fs/btrfs/extent-tree.c:379!
> > Dec  8 13:26:35 revo invalid opcode: 0000 [#1] SMP
> > Dec  8 13:26:35 revo Modules linked in: iwl3945
> > Dec  8 13:26:35 revo
> > Dec  8 13:26:35 revo Pid: 257, comm: btrfs/0 Not tainted (2.6.24-rc4 #1)
> > Dec  8 13:26:35 revo EIP: 0060:[<b01c6a1b>] EFLAGS: 00010202 CPU: 0
> > Dec  8 13:26:35 revo EIP is at btrfs_inc_extent_ref+0xbb/0x140
> > Dec  8 13:26:35 revo EAX: 00000001 EBX: 00000000 ECX: 00000000 EDX:
> > c569d000 Dec  8 13:26:35 revo ESI: 00000001 EDI: d222a4e0 EBP: d17fd3e4
> > ESP: eea85db4 Dec  8 13:26:35 revo DS: 007b ES: 007b FS: 00d8 GS: 0000
> > SS: 0068 Dec  8 13:26:35 revo Process btrfs/0 (pid: 257, ti=eea84000
> > task=ef09a030 task.ti=eea84000)
> > Dec  8 13:26:35 revo Stack: d222a4e0 00000000 00000001 eea85dd8 e37b2400
> > 00000001 00005000 00000050
> > Dec  8 13:26:35 revo 21000000 00002000 00000000 e37b2400 b1000000
> > d0020bd4 00000002 b01c6f43
> > Dec  8 13:26:35 revo 00005000 00000000 00002000 00000000 00000001
> > e37b2400 d17fd3e4 0000008a
> > Dec  8 13:26:35 revo Call Trace:
> > Dec  8 13:26:35 revo [<b01c6f43>] btrfs_inc_ref+0xf3/0x2d0
> > Dec  8 13:26:35 revo [<b01bf3ad>] __btrfs_cow_block+0x18d/0x390
> > Dec  8 13:26:35 revo [<b01bf726>] btrfs_cow_block+0x176/0x1a0
> > Dec  8 13:26:35 revo [<b01d3451>] btrfs_defrag_leaves+0xf1/0x850
> > Dec  8 13:26:35 revo [<b01cc2b0>] btrfs_transaction_cleaner+0x0/0xd0
> > Dec  8 13:26:35 revo [<b01cb5a9>] btrfs_start_transaction+0xc9/0x1c0
> > Dec  8 13:26:35 revo [<b01cc1b7>] btrfs_defrag_root+0x67/0xe0
> > Dec  8 13:26:35 revo [<b01cc2b0>] btrfs_transaction_cleaner+0x0/0xd0
> > Dec  8 13:26:35 revo [<b01cc2a3>] btrfs_defrag_dirty_roots+0x73/0x80
> > Dec  8 13:26:35 revo [<b01cc2b0>] btrfs_transaction_cleaner+0x0/0xd0
> > Dec  8 13:26:35 revo [<b01cc352>] btrfs_transaction_cleaner+0xa2/0xd0
> > Dec  8 13:26:35 revo [<b0138f8d>] run_workqueue+0xad/0x130
> > Dec  8 13:26:35 revo [<b01399f0>] worker_thread+0x0/0xf0
> > Dec  8 13:26:35 revo [<b0139a7c>] worker_thread+0x8c/0xf0
> > Dec  8 13:26:35 revo [<b013ccd0>] autoremove_wake_function+0x0/0x40
> > Dec  8 13:26:35 revo [<b01399f0>] worker_thread+0x0/0xf0
> > Dec  8 13:26:35 revo [<b013ca12>] kthread+0x42/0x70
> > Dec  8 13:26:35 revo [<b013c9d0>] kthread+0x0/0x70
> > Dec  8 13:26:35 revo [<b0104e67>] kernel_thread_helper+0x7/0x10
> > Dec  8 13:26:35 revo =======================
> > Dec  8 13:26:35 revo Code: c6 44 24 23 21 8b 82 bc 00 00 00 8b 50 10 89
> > e8 89 74 24 08 89 5c 24 04 89 3c 24 e8 f0 a7 ff ff 83 f8 00 89 44 2
> > 4 14 7c 7b 74 04 <0f> 0b eb fe 8b 57 20 8b 1f 8d 14 92 8d 54 92 4f 89 d8
> > e8 6e 44
> > Dec  8 13:26:35 revo EIP: [<b01c6a1b>] btrfs_inc_extent_ref+0xbb/0x140
> > SS:ESP 0068:eea85db4
> > This time I did not mount twice:
> > $ mount -o loop /usr/portage.img /mnt/tmp
> > $ rsync -a /usr/portage/ /mnt/tmp/
> > $ umount /mnt/tmp
> > $ mount -o loop,subvol=. /usr/portage.img /mnt/tmp/
> > $ btrfsctl -s 2007-12-08 /mnt/tmp/default
> > $ umount /mnt/tmp
> > $ mount -o loop /usr/portage.img /use/portage
> > [ suspend and resume the system ]
> > $ emerge sync
> > Tuxonice has functions to freeze filesystems, I'll enable debug
> > information to make shure it is not the cause for the trouble.
>
> It's seem that the btrfs is damaged. have you reformatted the image
> file after the first Oops?

It's a clean image. After the first oops I deleted it an created a new one.
After the  second oops I did not delete the image nor formatted it, I still 
use it. The difference is that I unmounted it before suspend (or directly 
after resume without any other access to it). The logfiles do not show any 
hints though.
-- 
Regards,
Chris