WARNING: at /build/buildd/linux-3.5.0/fs/btrfs/super.c:221 __btrfs_abort_transaction+0x99/0xb0 [btrfs]()

[C de-Avillez]

During regression tests of kernel 3.5.0-20.31-generic i386:

Dec 10 12:26:29 alkaid kernel: [ 3504.309928] ------------[ cut here ]------------
Dec 10 12:26:29 alkaid kernel: [ 3504.309946] WARNING: at /build/buildd/linux-3.5.0/fs/btrfs/super.c:221 __btrfs_abort_transaction+0x99/0xb0 [btrfs]()
Dec 10 12:26:29 alkaid kernel: [ 3504.309948] Hardware name: PowerEdge R210 II
Dec 10 12:26:29 alkaid kernel: [ 3504.309949] btrfs: Transaction aborted
Dec 10 12:26:29 alkaid kernel: [ 3504.309951] Modules linked in: btrfs zlib_deflate libcrc32c xfs ext2 dm_multipath scsi_dh vesafb coretemp lpc_ich kvm dcdbas joydev microcode mac_hi
d lp parport hid_generic usbhid hid mpt2sas bnx2 scsi_transport_sas raid_class
Dec 10 12:26:29 alkaid kernel: [ 3504.309971] Pid: 6927, comm: flush-btrfs-139 Not tainted 3.5.0-20-generic #31-Ubuntu
Dec 10 12:26:29 alkaid kernel: [ 3504.309972] Call Trace:
Dec 10 12:26:29 alkaid kernel: [ 3504.309979] [<c1044802>] warn_slowpath_common+0x72/0xa0
Dec 10 12:26:29 alkaid kernel: [ 3504.309990] [<f89d6cb9>] ? __btrfs_abort_transaction+0x99/0xb0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310000] [<f89d6cb9>] ? __btrfs_abort_transaction+0x99/0xb0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310003] [<c10448d3>] warn_slowpath_fmt+0x33/0x40
Dec 10 12:26:29 alkaid kernel: [ 3504.310013] [<f89d6cb9>] __btrfs_abort_transaction+0x99/0xb0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310025] [<f89e83f6>] find_free_extent+0xba6/0xbd0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310036] [<f89e74d3>] ? do_chunk_alloc.isra.69+0x1d3/0x550 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310048] [<f89ec832>] btrfs_reserve_extent+0x162/0x2d0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310062] [<f8a040fc>] cow_file_range+0x1cc/0x5f0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310076] [<f8a05482>] run_delalloc_range+0x3d2/0x420 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310091] [<f8a23b8e>] __extent_writepage+0x37e/0x960 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310095] [<c12c84ef>] ? cpumask_next_and+0x1f/0x40
Dec 10 12:26:29 alkaid kernel: [ 3504.310099] [<c1101927>] ? find_get_pages_tag+0xb7/0x150
Dec 10 12:26:29 alkaid kernel: [ 3504.310113] [<f8a24615>] extent_writepages+0x275/0x360 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310126] [<f8a00f20>] ? btrfs_submit_direct+0x6c0/0x6c0 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310138] [<f89fea74>] btrfs_writepages+0x24/0x30 [btrfs]
Dec 10 12:26:29 alkaid kernel: [ 3504.310141] [<c110a81a>] do_writepages+0x1a/0x40
Dec 10 12:26:29 alkaid kernel: [ 3504.310145] [<c11720cf>] __writeback_single_inode.isra.32+0x2f/0x130
Dec 10 12:26:29 alkaid kernel: [ 3504.310149] [<c1065513>] ? wake_up_bit+0x23/0x30
Dec 10 12:26:29 alkaid kernel: [ 3504.310152] [<c1172c7b>] writeback_sb_inodes+0x16b/0x2e0
Dec 10 12:26:29 alkaid kernel: [ 3504.310155] [<c1172e6c>] __writeback_inodes_wb+0x7c/0xb0
Dec 10 12:26:29 alkaid kernel: [ 3504.310158] [<c117309a>] wb_writeback+0x1fa/0x270
Dec 10 12:26:29 alkaid kernel: [ 3504.310162] [<c1170bd7>] ? over_bground_thresh+0x57/0xb0
Dec 10 12:26:29 alkaid kernel: [ 3504.310165] [<c11740e7>] wb_do_writeback+0x137/0x1b0
Dec 10 12:26:29 alkaid kernel: [ 3504.310168] [<c1053740>] ? usleep_range+0x40/0x40
Dec 10 12:26:29 alkaid kernel: [ 3504.310171] [<c11741d1>] bdi_writeback_thread+0x71/0x1e0
Dec 10 12:26:29 alkaid kernel: [ 3504.310175] [<c1174160>] ? wb_do_writeback+0x1b0/0x1b0
Dec 10 12:26:29 alkaid kernel: [ 3504.310178] [<c1064e72>] kthread+0x72/0x80
Dec 10 12:26:29 alkaid kernel: [ 3504.310181] [<c1064e00>] ? kthread_freezable_should_stop+0x60/0x60
Dec 10 12:26:29 alkaid kernel: [ 3504.310185] [<c15d1c7e>] kernel_thread_helper+0x6/0x10
Dec 10 12:26:29 alkaid kernel: [ 3504.310187] ---[ end trace 7b3504d6d733b2c7 ]---
Dec 10 12:26:29 alkaid kernel: [ 3504.310189] BTRFS warning (device loop0): Aborting unused transaction.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-20-generic 3.5.0-20.31
ProcVersionSignature: Ubuntu 3.5.0-20.31-generic 3.5.7.1
Uname: Linux 3.5.0-20-generic i686
AlsaDevices:
 total 0
 crw-rw---T 1 root audio 116, 1 Dec 10 11:28 seq
 crw-rw---T 1 root audio 116, 33 Dec 10 11:28 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.6.1-0ubuntu9
Architecture: i386
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CurrentDmesg:

Date: Tue Dec 11 12:11:50 2012
HibernationDevice: RESUME=UUID=d4e95972-e74c-4713-aa73-4a338a30a8ee
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: Dell Inc. PowerEdge R210 II
MarkForUpload: True
PciMultimedia:

ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-20-generic root=UUID=39efa223-976f-4f32-86e3-c2ea6707c99b ro quiet
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-20-generic N/A
 linux-backports-modules-3.5.0-20-generic N/A
 linux-firmware 1.95
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/06/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.1.1
dmi.board.name: 09T7VV
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.1.1:bd05/06/2011:svnDellInc.:pnPowerEdgeR210II:pvr:rvnDellInc.:rn09T7VV:rvrA01:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R210 II
dmi.sys.vendor: Dell Inc.

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Are you able to reproduce this bug consistently with 3.5.0-20.31 ? Does this issue not happen if you boot the previous kernel?