Re: [PATCH V2 0/6] random bugfixes of the space management

[Mitch Harder <mitch.harder@sabayonlinux.org>]

2010/12/29 Miao Xie <miaox@cn.fujitsu.com>:
> Hello, Chris
>
> I have a bunch of random fixes of the space management in
>
> git://repo.or.cz/linux-btrfs-devel.git space-manage
>
> They are the ENOSPC fixes, as well as fixes for df command.
> The first one and the last one fixed the wrong free space information=
 reported
> by df command. The second one fixed ENOSPC when there is tiny space i=
n the
> filesystem. And The third fixed wrong calculation of stripe size. And=
 the 4th
> and 5th patches fixed the chunk allocation problem when the block dev=
ices have
> no enough space to allocate a default-size chunk.
>
> Changelog V1 -> V2:
> - fix compiler errors on x86_32 machines.
> - fix some bugs when allocating dup chunks.
> - break the chunk allocation when errors happen.
> - just allocate min_stripes stripes when the free space is not enough=
=2E
> - cleanup redundant code
>
> You can merge this patchset to your "next" branch directly after drop=
ping
> the top four patches of the "next" branch.
>
> Thanks
> Miao
> ---
> =A0fs/btrfs/ctree.h =A0 =A0 =A0 | =A0 =A02 +
> =A0fs/btrfs/extent-tree.c | =A0 71 +++++-
> =A0fs/btrfs/super.c =A0 =A0 =A0 | =A0147 +++++++++++-
> =A0fs/btrfs/volumes.c =A0 =A0 | =A0615 ++++++++++++++++++++++++++++++=
+++++-------------
> =A0fs/btrfs/volumes.h =A0 =A0 | =A0 27 ++
> =A05 files changed, 686 insertions(+), 176 deletions(-)
> --
> To unsubscribe from this list: send the line "unsubscribe linux-btrfs=
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> the body of a message to majordomo@vger.kernel.org
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>

I've applied these patches to a 2.6.36 kernel that I've merged with
the patches on Chris' 'next' branch, and I'm getting a kernel error.

As per the instructions, I dropped the previous top four patches, and
applied patches 1-6 from this set of posts.

I am receiving this error while compiling boost on a 3.5 GB partition
formated with zlib compression.

I've replicated the error several times, so it's reproducible.  Let me
know if you want to try something different to test.

I'm not seeing any corruption on this partition after rebooting, but
the partition locks up until a reboot.

This kernel was built for a single CPU.

[  395.318007] device fsid 574581b1d0733ddc-9b56ea1839549fa0 devid 1
transid 16783 /dev/sdc2
[  395.319788] btrfs: force zlib compression
[ 1602.944528] ------------[ cut here ]------------
[ 1602.944533] kernel BUG at mm/slub.c:2833!
[ 1602.944536] invalid opcode: 0000 [#1]
[ 1602.944540] last sysfs file: /sys/devices/virtual/dmi/id/bios_vendor
[ 1602.944543] Modules linked in: snd_pcm_oss snd_mixer_oss
snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device ipv=
6
nls_iso8859_1 nls_cp437 snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm
ppdev nvidia(P) tpm_tis snd_timer tpm parport_pc tpm_bios snd sr_mod
i2c_nforce2 pcspkr parport forcedeth nvidia_agp i2c_core snd_page_alloc
sl811_hcd ohci_hcd uhci_hcd hid ehci_hcd
[ 1602.944570]
[ 1602.944576] Pid: 14363, comm: cp Tainted: P
2.6.36.2-sabayon #1 MS-6570/
[ 1602.944580] EIP: 0060:[<c1079724>] EFLAGS: 00210246 CPU: 0
[ 1602.944588] EIP is at kfree+0x4b/0x8f
[ 1602.944591] EAX: 00000000 EBX: 10000000 ECX: 00000000 EDX: c1f38fe0
[ 1602.944595] ESI: 00000000 EDI: ffffffe4 EBP: f3709ac0 ESP: f3709ab4
[ 1602.944598]  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[ 1602.944603] Process cp (pid: 14363, ti=3Df3708000 task=3Dd9bc83b0
task.ti=3Df3708000)
[ 1602.944605] Stack:
[ 1602.944607]  10000000 00000000 ffffffe4 f3709b50 c126a7a8 f67bd130
f67bd234 00000098
[ 1602.944613] <0> ffffffe4 00000000 f3709b88 10000000 00000000 f01b406=
0
00000001 f3cbb110
[ 1602.944619] <0> c974c2a0 f36410c0 f33da000 f3cbb110 20000000 0000000=
0
00000000 00000020
[ 1602.944625] Call Trace:
[ 1602.944633]  [<c126a7a8>] ? __btrfs_alloc_chunk+0x6a5/0x6e4
[ 1602.944638]  [<c1268289>] ? find_next_chunk+0xfd/0x107
[ 1602.944642]  [<c126a831>] ? btrfs_alloc_chunk+0x4a/0x81
[ 1602.944648]  [<c1239c19>] ? do_chunk_alloc+0x26f/0x2b0
[ 1602.944654]  [<c123c6ab>] ? btrfs_reserve_extent+0x71/0x189
[ 1602.944658]  [<c123c891>] ? btrfs_alloc_free_block+0xce/0x21d
[ 1602.944667]  [<c10172ba>] ? kmap_atomic_prot+0xa8/0xaa
[ 1602.944671]  [<c1234a45>] ? split_leaf+0x278/0x568
[ 1602.944679]  [<c125882f>] ? btrfs_item_offset+0x93/0x9d
[ 1602.944683]  [<c1235f41>] ? btrfs_search_slot+0x4af/0x579
[ 1602.944688]  [<c12364d5>] ? btrfs_insert_empty_items+0x3d/0x7c
[ 1602.944693]  [<c124ef70>] ? btrfs_new_inode+0x147/0x2a8
[ 1602.944697]  [<c1250905>] ? btrfs_create+0xc0/0x1ec
[ 1602.944705]  [<c108674c>] ? generic_permission+0xf/0x85
[ 1602.944709]  [<c1087387>] ? vfs_create+0x85/0xce
[ 1602.944713]  [<c1087d9a>] ? do_last+0x259/0x4e0
[ 1602.944717]  [<c10895fe>] ? do_filp_open+0x196/0x446
[ 1602.944722]  [<c1087aa4>] ? getname+0x1b/0xb8
[ 1602.944726]  [<c1079645>] ? kmem_cache_alloc+0x3e/0x6c
[ 1602.944733]  [<c107edcf>] ? do_sys_open+0x48/0xf6
[ 1602.944737]  [<c107eebf>] ? sys_open+0x1e/0x26
[ 1602.944742]  [<c100258c>] ? sysenter_do_call+0x12/0x22
[ 1602.944745] Code: ea 0c c1 e2 05 83 e1 fc 8d 14 11 8b 0a 81 e1 00 40
02 00 81 f9 00 40 02 00 75 03 8b 52 0c 8b 0a 84 c9 78 14 8b 02 f6 c4 40
75 04 <0f> 0b eb fe 89 d0 e8 8a 3f fe ff eb 2f 8b 7d 04 8b 72 0c 9c 5b
[ 1602.944774] EIP: [<c1079724>] kfree+0x4b/0x8f SS:ESP 0068:f3709ab4
[ 1602.944781] ---[ end trace e5193c705338f5d6 ]---
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