Re: BUG: failure at fs/btrfs/ctree.h:337/btrfs_chunk_item_size()!

[Vegard Nossum <vegard.nossum@oracle.com>]

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On 11/30/2015 05:34 PM, David Sterba wrote:
> On Mon, Nov 30, 2015 at 02:48:51PM +0100, David Sterba wrote:
>> On Sun, Nov 15, 2015 at 07:21:17PM +0100, Vegard Nossum wrote:
>>> With the attached btrfs image, I get the following splat when mounting:
>>>
>>> """
>>> # mount -o loop -t btrfs ./btrfs.0 /mnt/0/
>>> BTRFS: device fsid 9006933e-2a9a-44f0-917f-514252aeec2c devid 1 transid
>>> 7 /dev/loop0
>>> BTRFS info (device loop0): disk space caching is enabled
>>> BUG: failure at fs/btrfs/ctree.h:337/btrfs_chunk_item_size()!
>
> The fix, worked for me on the provided image:
> https://patchwork.kernel.org/patch/7728051/
>
> I'll add the attached image to btrfs-progs testsuite as it triggers
> crashes in other tools.
>

Thanks, that seems to fix the problem.

With your patch and a new image, I run into a second issue (which is 
probably unrelated):

BTRFS critical (device loop0): unable to find logical 4294963200 len 
40966cc7e != de8
BUG: failure at fs/btrfs/inode.c:1805/btrfs_merge_bio_hook()!
Kernel panic - not syncing: BUG! errors
CPU: 0 PID: 913 Comm: mount Not tainted 4.2.5 #1cc7e devid 1 transid 7 
/dev/loop0
Stack: dev_item UUID does not match fsid: 
de80ced1-18ac-490c-9afb-cf0a7d66cc7e != de8
   e0147430 60075412 600bd457 603f5080
   606dfc7a 605e2b14 e0147440 605e595fors
   e0147560 605e291e e00cb2e8 00001000
  Call Trace:
   [<60029f3b>] show_stack+0xdb/0x1a0
   [<605e595f>] dump_stack+0x2a/0x2c
   [<605e291e>] panic+0x137/0x2ac
   [<602b8d0c>] btrfs_merge_bio_hook+0xfc/0x100
   [<602e3923>] submit_extent_page+0x223/0x330
   [<602e51a6>] __do_readpage+0x476/0xb60
   [<602e59bf>] __extent_read_full_page+0x12f/0x140
   [<602e8264>] read_extent_buffer_pages+0x1e4/0x410
   [<602a9d46>] btree_read_extent_buffer_pages.constprop.24+0x106/0x1a0
   [<602aa67e>] read_tree_block+0x5e/0xa0
   [<602b0064>] open_ctree+0x1814/0x2db0
   [<60273a3b>] btrfs_mount+0xf3b/0x1010
   [<601054d3>] mount_fs+0x33/0x210
   [<60124b94>] vfs_kern_mount+0x74/0x170
   [<60272df3>] btrfs_mount+0x2f3/0x1010
   [<601054d3>] mount_fs+0x33/0x210
   [<60124b94>] vfs_kern_mount+0x74/0x170
   [<601264dc>] do_mount+0x26c/0xf30
   [<6012768b>] SyS_mount+0xab/0x120

Should I start a new thread? I've attached the new image. Thanks,


Vegard

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