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[Bug 1295450] Re: [beta1] [btrfs] kernel BUG at /build/buildd/linux-3.13.0/fs/btrfs/file.c:837!

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: Colin Ian King <1295450@xxxxxxxxxxxxxxxxxx>
Date: Tue, 20 Jan 2015 22:26:24 -0000
Reply-to: Bug 1295450 <1295450@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I believe the fix to this is upstream commit
00fdf13a2e9f313a044288aa59d3b8ec29ff904a

Author: Liu Bo <bo.li.liu@xxxxxxxxxx>
Date:   Mon Mar 10 18:56:07 2014 +0800

    Btrfs: fix a crash of clone with inline extents's split


** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Colin Ian King (colin-king)

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https://bugs.launchpad.net/bugs/1295450

Title:
   [beta1] [btrfs] kernel BUG at
  /build/buildd/linux-3.13.0/fs/btrfs/file.c:837!

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  Description
  =========
  btrfs/035 - Regression test for overwriting clone testcase in the xfsqa test suite fails with kernel BUG at /build/buildd/linux-3.13.0/fs/btrfs/file.c:837!

  root@ubuntu:~/suites/XFSQA/xfstests-f1dcf49# ./check btrfs/035
  FSTYP -- btrfs
  PLATFORM -- Linux/ppc64le ubuntu 3.13.0-14-generic
  MKFS_OPTIONS -- /dev/loop1
  MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

  btrfs/035

  Detailed trace messages
  ===================
  Mar 7 01:05:37 ubuntu user: run xfstest btrfs/035
  Mar 7 01:05:38 ubuntu kernel: [ 874.286014] btrfs: device fsid 59b3e135-33c2-4c5c-b19e-4a9110ba06d5 devid 1 transid 1 /dev/loop1
  Mar 7 01:05:38 ubuntu kernel: [ 874.295434] btrfs: device fsid 59b3e135-33c2-4c5c-b19e-4a9110ba06d5 devid 1 transid 4 /dev/loop1
  Mar 7 01:05:38 ubuntu kernel: [ 874.481031] btrfs: device fsid 59b3e135-33c2-4c5c-b19e-4a9110ba06d5 devid 1 transid 4 /dev/loop1
  Mar 7 01:05:38 ubuntu kernel: [ 874.491104] btrfs: device fsid 59b3e135-33c2-4c5c-b19e-4a9110ba06d5 devid 1 transid 4 /dev/loop1
  Mar 7 01:05:38 ubuntu kernel: [ 874.509344] btrfs: device fsid 59b3e135-33c2-4c5c-b19e-4a9110ba06d5 devid 1 transid 4 /dev/loop1
  Mar 7 01:05:38 ubuntu kernel: [ 874.510757] btrfs: disk space caching is enabled
  Mar 7 01:05:38 ubuntu kernel: [ 874.510760] btrfs flagging fs with big metadata feature
  Mar 7 01:05:38 ubuntu kernel: [ 874.512208] btrfs: creating UUID tree
  Mar 7 01:05:38 ubuntu kernel: [ 874.649220] ------------[ cut here ]------------
  Mar 7 01:05:38 ubuntu kernel: [ 874.649225] kernel BUG at /build/buildd/linux-3.13.0/fs/btrfs/file.c:837!
  Mar 7 01:05:38 ubuntu kernel: [ 874.649377] Oops: Exception in kernel mode, sig: 5 [#1]
  Mar 7 01:05:38 ubuntu kernel: [ 874.649424] SMP NR_CPUS=2048 NUMA pSeries
  Mar 7 01:05:38 ubuntu kernel: [ 874.649473] Modules linked in: pseries_rng rtc_generic btrfs xor raid6_pq libcrc32c
  Mar 7 01:05:38 ubuntu kernel: [ 874.649600] CPU: 0 PID: 19133 Comm: cloner Tainted: G W 3.13.0-14-generic #34-Ubuntu
  Mar 7 01:05:38 ubuntu kernel: [ 874.649745] task: c00000007b8a8000 ti: c00000007b790000 task.ti: c00000007b790000
  Mar 7 01:05:38 ubuntu kernel: [ 874.649813] NIP: d0000000005eb9fc LR: d0000000005eb634 CTR: 0000000000000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.649882] REGS: c00000007b7933c0 TRAP: 0700 Tainted: G W (3.13.0-14-generic)
  Mar 7 01:05:38 ubuntu kernel: [ 874.649950] MSR: 8000000000029033 <SF,EE,ME,IR,DR,RI,LE> CR: 24044024 XER: 20000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] CFAR: d0000000005ebd9c SOFTE: 1
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR00: 0000000000000001 c00000007b793640 d000000000692028 0000000000000014
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR04: 0000000000003e15 0000000000004000 c00000007b793608 c0000000799c7000
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR08: 0000000000001000 0000000000000001 c0000000799c7000 c00000007b7936d1
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR12: 0000000024048022 c00000000fe80000 c000000050f91dc0 c000000050f91dc0
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR16: 1000000000000000 c000000000000000 000000000000000a c000000079576000
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR20: 0000000000000001 0000000000000101 0000000000000000 0000000000000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR24: 000000000000006c 0000000000000101 0000000000000000 0000000000000014
  Mar 7 01:05:38 ubuntu kernel: [ 874.650118] GPR28: 0000000000000000 0000000000003e0d 0000000000000000 c00000007d890090
  Mar 7 01:05:38 ubuntu kernel: [ 874.651152] NIP [d0000000005eb9fc] .__btrfs_drop_extents+0x6dc/0xa80 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651237] LR [d0000000005eb634] .__btrfs_drop_extents+0x314/0xa80 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651347] Call Trace:
  Mar 7 01:05:38 ubuntu kernel: [ 874.651389] [c00000007b793640] [d0000000005eb634] .__btrfs_drop_extents+0x314/0xa80 [btrfs] (unreliable)
  Mar 7 01:05:38 ubuntu kernel: [ 874.651498] [c00000007b7937c0] [d0000000005ec95c] .btrfs_drop_extents+0x7c/0xd0 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651599] [c00000007b793870] [d00000000065a908] .btrfs_clone+0x6fc/0x998 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651697] [c00000007b7939f0] [d00000000060d658] .btrfs_ioctl_clone+0x428/0x450 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651859] [c00000007b793ae0] [d000000000611428] .btrfs_ioctl+0x3a8/0x2920 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.651946] [c00000007b793c90] [c00000000024c884] .do_vfs_ioctl+0x4d4/0x790
  Mar 7 01:05:38 ubuntu kernel: [ 874.652016] [c00000007b793d80] [c00000000024cc14] .SyS_ioctl+0xd4/0xf0
  Mar 7 01:05:38 ubuntu kernel: [ 874.652016] [c00000007b793d80] [c00000000024cc14] .SyS_ioctl+0xd4/0xf0
  Mar 7 01:05:38 ubuntu kernel: [ 874.652088] [c00000007b793e30] [c000000000009e58] syscall_exit+0x0/0x98
  Mar 7 01:05:38 ubuntu kernel: [ 874.652155] Instruction dump:
  Mar 7 01:05:38 ubuntu kernel: [ 874.652192] 7cd6d850 38e00000 4800360d 60000000 7dc37378 4bfe3a01 60000000 e96100e8
  Mar 7 01:05:38 ubuntu kernel: [ 874.652366] 41920010 e80100c8 2fa00000 409e02dc <0b140000> 39010091 3921009a fb280000
  Mar 7 01:05:38 ubuntu kernel: [ 874.652495] ---[ end trace bd0cd2e514b90182 ]---
  Mar 7 01:05:38 ubuntu kernel: [ 874.656578]
  Mar 7 01:05:38 ubuntu kernel: [ 874.656710] ------------[ cut here ]------------
  Mar 7 01:05:38 ubuntu kernel: [ 874.656759] WARNING: at /build/buildd/linux-3.13.0/kernel/smp.c:237
  Mar 7 01:05:38 ubuntu kernel: [ 874.656875] Modules linked in: pseries_rng rtc_generic btrfs xor raid6_pq libcrc32c
  Mar 7 01:05:38 ubuntu kernel: [ 874.656995] CPU: 0 PID: 19133 Comm: cloner Tainted: G D W 3.13.0-14-generic #34-Ubuntu
  Mar 7 01:05:38 ubuntu kernel: [ 874.657075] task: c00000007b8a8000 ti: c00000007b790000 task.ti: c00000007b790000
  Mar 7 01:05:38 ubuntu kernel: [ 874.657143] NIP: c00000000011ff00 LR: c00000000018ffc4 CTR: c000000000193850
  Mar 7 01:05:38 ubuntu kernel: [ 874.657212] REGS: c00000007b792ba0 TRAP: 0700 Tainted: G D W (3.13.0-14-generic)
  Mar 7 01:05:38 ubuntu kernel: [ 874.657279] MSR: 8000000000021033 <SF,ME,IR,DR,RI,LE> CR: 42044022 XER: 00000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] CFAR: c00000000011fdf4 SOFTE: 0
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR00: c00000000018ffc4 c00000007b792e20 c000000001118a80 0000000000000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR04: c000000001078278 c00000007b792f50 0000000000000001 c000000000fc8a80
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR08: c000000001175a80 0000000000000000 0000000000000001 00000000000000a3
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR12: 0000000044044028 c00000000fe80000 c000000050f91dc0 c000000050f91dc0
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR16: 1000000000000000 c000000000000000 000000000000000a c000000079576000
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR20: 0000000000000001 0000000000000101 c00000007b8a9104 0000000000000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR24: c00000007b793090 0000000000000101 0000000000000000 c000000001007a00
  Mar 7 01:05:38 ubuntu kernel: [ 874.657489] GPR28: c00000007b792f50 c000000001078278 0000000000000001 0000000000000000
  Mar 7 01:05:38 ubuntu kernel: [ 874.658488] NIP [c00000000011ff00] .smp_call_function_single+0x190/0x210
  Mar 7 01:05:38 ubuntu kernel: [ 874.658549] LR [c00000000018ffc4] .task_function_call+0x54/0x70
  Mar 7 01:05:38 ubuntu kernel: [ 874.658605] Call Trace:
  Mar 7 01:05:38 ubuntu kernel: [ 874.658631] [c00000007b792e20] [0000000000000001] 0x1 (unreliable)
  Mar 7 01:05:38 ubuntu kernel: [ 874.658709] [c00000007b792ee0] [c00000000018ffc4] .task_function_call+0x54/0x70
  Mar 7 01:05:38 ubuntu kernel: [ 874.658792] [c00000007b792f80] [c0000000001383c4] .cgroup_exit+0x114/0x180
  Mar 7 01:05:38 ubuntu kernel: [ 874.658936] [c00000007b793020] [c000000000097fdc] .do_exit+0x36c/0xb40
  Mar 7 01:05:38 ubuntu kernel: [ 874.659008] [c00000007b793110] [c000000000021c10] .die+0x2f0/0x450
  Mar 7 01:05:38 ubuntu kernel: [ 874.659077] [c00000007b7931b0] [c000000000021f84] ._exception+0x1a4/0x1d0
  Mar 7 01:05:38 ubuntu kernel: [ 874.659147] [c00000007b793350] [c0000000000061c4] program_check_common+0x144/0x180
  Mar 7 01:05:38 ubuntu kernel: [ 874.659259] --- Exception: 700 at .__btrfs_drop_extents+0x6dc/0xa80 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659259] LR = .__btrfs_drop_extents+0x314/0xa80 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659388] [c00000007b7937c0] [d0000000005ec95c] .btrfs_drop_extents+0x7c/0xd0 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659539] [c00000007b793870] [d00000000065a908] .btrfs_clone+0x6fc/0x998 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659637] [c00000007b7939f0] [d00000000060d658] .btrfs_ioctl_clone+0x428/0x450 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659735] [c00000007b793ae0] [d000000000611428] .btrfs_ioctl+0x3a8/0x2920 [btrfs]
  Mar 7 01:05:38 ubuntu kernel: [ 874.659816] [c00000007b793c90] [c00000000024c884] .do_vfs_ioctl+0x4d4/0x790
  Mar 7 01:05:38 ubuntu kernel: [ 874.659888] [c00000007b793d80] [c00000000024cc14] .SyS_ioctl+0xd4/0xf0
  Mar 7 01:05:38 ubuntu kernel: [ 874.660011] [c00000007b793e30] [c000000000009e58] syscall_exit+0x0/0x98
  Mar 7 01:05:38 ubuntu kernel: [ 874.660079] Instruction dump:
  Mar 7 01:05:38 ubuntu kernel: [ 874.660114] 4bffff70 60000000 60000000 60420000 3ce2000a 394752d0 814a0000 2f8a0000
  Mar 7 01:05:38 ubuntu kernel: [ 874.660233] 409eff08 3ce2ffeb 8947a653 694a0001 <0b0a0000> 2faa0000 41fefef0 39400001
  Mar 7 01:05:38 ubuntu kernel: [ 874.660351] ---[ end trace bd0cd2e514b90183 ]---
  Mar 7 01:09:17 ubuntu kernel: [ 1092.760484] type=1006 audit(1394176157.030:34): pid=19137 uid=0 old auid=4294967295 new auid=1000 old ses=4294967295 new ses=2 res=1

  Steps to reproduce
  ===============
  > Installed Ubuntu beta1 build ISO on a Power 8 machine as a KVM guest
  > Download and compile xfstests-f1dcf49.tar.gz and xfsprogs-05aa762.tar.gz from http://oss.sgi.com/cgi-bin/gitweb.cgi?p=xfs/cmds/xfstests.git;a=summary
  > run ./check btrfs/035

  uname -a
  ========
  Linux ubuntu 3.13.0-14-generic #34-Ubuntu SMP Thu Feb 27 22:35:16 UTC 2014 ppc64le ppc64le ppc64le GNU/Linux
  --- 
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: ppc64el
  ArecordDevices: Error: [Errno 2] No such file or directory
  CRDA: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=ae220e24-0dd1-469a-9676-4ea9c4397dbb
  InstallationDate: Installed on 2014-03-17 (5 days ago)
  InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Alpha ppc64el (20140313)
  IwConfig: Error: [Errno 2] No such file or directory
  Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  Package: linux (not installed)
  PciMultimedia:
   
  ProcEnviron:
   LANGUAGE=en_IN:en
   TERM=vt100
   PATH=(custom, no user)
   LANG=en_IN
   SHELL=/bin/bash
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinux-3.13.0-19-generic root=UUID=95800486-b5ed-497b-8b1e-33b28c6c6601 ro splash quiet vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-19.39-generic 3.13.6
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-19-generic N/A
   linux-backports-modules-3.13.0-19-generic  N/A
   linux-firmware                             1.126
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  trusty
  Uname: Linux 3.13.0-19-generic ppc64le
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:
   
  _MarkForUpload: True

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References

[Bug 1295450] [NEW] [beta1] [btrfs] kernel BUG at /build/buildd/linux-3.13.0/fs/btrfs/file.c:837!
From: Abdul, 2014-03-21