Re: kernel BUG at fs/btrfs/extent-tree.c:8113! (4.1.3 kernel)

[Marc MERLIN <marc@merlins.org>]

On Mon, Aug 17, 2015 at 07:49:04AM -0700, Marc MERLIN wrote:
> On Mon, Aug 17, 2015 at 10:01:16AM +0800, Qu Wenruo wrote:
> > Hi Marc,
>  
> Hi Qu, thanks for your answer and looking at this.
> 
> > Did btrfs-debug-tree also has the crash?
> > 
> > If not, would you please attach the output if it doesn't contain
> > classified data.
  
Do you need anything else before I wipe the filesystem and start over?

1) kernel is fixed not to crash
2) btrfs check --repair segfaults
3) btrfs-debug-tree ends with assert

Thanks,
Marc

> Sure thing:
> btrfs-debug-tree /dev/mapper/crypt_sdd1 > /tmp/tree.out
> parent transid verify failed on 2968115101696 wanted 34855 found 39533
> parent transid verify failed on 2968115101696 wanted 34855 found 39533
> parent transid verify failed on 2968115101696 wanted 34855 found 39533
> parent transid verify failed on 2968115101696 wanted 34855 found 39533
> Ignoring transid failure
> parent transid verify failed on 2968115134464 wanted 34855 found 39533
> parent transid verify failed on 2968115134464 wanted 34855 found 39533
> parent transid verify failed on 2968115134464 wanted 34855 found 39533
> parent transid verify failed on 2968115134464 wanted 34855 found 39533
> Ignoring transid failure
> parent transid verify failed on 2968115150848 wanted 34855 found 39533
> parent transid verify failed on 2968115150848 wanted 34855 found 39533
> parent transid verify failed on 2968115150848 wanted 34855 found 39533
> parent transid verify failed on 2968115150848 wanted 34855 found 39533
> Ignoring transid failure
> parent transid verify failed on 2968115691520 wanted 34855 found 39533
> parent transid verify failed on 2968115691520 wanted 34855 found 39533
> parent transid verify failed on 2968115691520 wanted 34855 found 39533
> parent transid verify failed on 2968115691520 wanted 34855 found 39533
> Ignoring transid failure
> parent transid verify failed on 1291597152256 wanted 35830 found 39530
> parent transid verify failed on 1291597152256 wanted 35830 found 39530
> parent transid verify failed on 1291597152256 wanted 35830 found 39530
> parent transid verify failed on 1291597152256 wanted 35830 found 39530
> Ignoring transid failure
> parent transid verify failed on 2968116592640 wanted 34855 found 39533
> parent transid verify failed on 2968116592640 wanted 34855 found 39533
> parent transid verify failed on 2968116592640 wanted 34855 found 39533
> parent transid verify failed on 2968116592640 wanted 34855 found 39533
> Ignoring transid failure
> parent transid verify failed on 2968116609024 wanted 34855 found 39533
> parent transid verify failed on 2968116609024 wanted 34855 found 39533
> parent transid verify failed on 2968116609024 wanted 34855 found 39533
> parent transid verify failed on 2968116609024 wanted 34855 found 39533
> Ignoring transid failure
> print-tree.c:1094: btrfs_print_tree: Assertion failed.
> btrfs-debug-tree[0x805ce93]
> btrfs-debug-tree(btrfs_print_tree+0x26d)[0x805eb51]
> btrfs-debug-tree(btrfs_print_tree+0x279)[0x805eb5d]
> btrfs-debug-tree(main+0x8b5)[0x804dfb7]
> /lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb757c4d3]
> btrfs-debug-tree[0x804e221]
> 
> Do you want the actual output?
> (it's 1.1GB uncompressed)
> 
> Marc
> 
> 
> > Thanks,
> > Qu
> > 
> > Marc MERLIN wrote on 2015/08/12 10:19 -0700:
> > >On Wed, Aug 12, 2015 at 12:18:45PM -0400, Josef Bacik wrote:
> > >>Going to need more info to figure this one out
> > >
> > >Thanks for the patch, here's the output:
> > >enabling repair mode
> > >Checking filesystem on /dev/mapper/crypt_sdd1
> > >UUID: 024ba4d0-dacb-438d-9f1b-eeb34083fe49
> > >checking extents
> > >wtf, parent 575708413952 <<<<<<
> > >cmds-check.c:4488: add_data_backref: Assertion `back->bytes != max_size` failed.
> > >/tmp/btrfs[0x8066a83]
> > >/tmp/btrfs[0x8066ab4]
> > >/tmp/btrfs[0x80679d8]
> > >/tmp/btrfs[0x806b4f2]
> > >/tmp/btrfs[0x806b9ea]
> > >/tmp/btrfs[0x806c5f9]
> > >/tmp/btrfs(cmd_check+0x1088)[0x806ee26]
> > >/tmp/btrfs(main+0x153)[0x80557d6]
> > >/lib/i386-linux-gnu/libc.so.6(__libc_start_main+0xf3)[0xb75a54d3]
> > >/tmp/btrfs[0x80557fc]
> > >
> > >Marc
> > >
> > --
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> > 
> 
> -- 
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>                                       .... what McDonalds is to gourmet cooking
> Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901
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-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901