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[Iain Lane <iain@xxxxxxxxxxxxxxxxxxx>]

Tried that, still fails

fs: forced removal ... [  103.792793] blk_update_request: I/O error, dev sdb, sector 0
[  103.804099] BUG: unable to handle kernel paging request at 1af23000
[  103.805253] IP: [<c1357db4>] __percpu_counter_add+0x14/0xa0
[  103.806244] *pdpt = 0000000015588001 *pde = 0000000000000000 
[  103.807201] Oops: 0000 [#1] SMP 
[  103.807776] Modules linked in: scsi_debug ppdev input_leds joydev serio_raw parport_pc 8250_fintek parport i2c_piix4 mac_hid autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq raid1 raid0 multipath linear psmouse floppy pata_acpi
[  103.808017] CPU: 0 PID: 1546 Comm: umount Not tainted 4.2.0-040200rc4-generic #201507271733
[  103.808017] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150604_211837-tipua 04/01/2014
[  103.808017] task: de8a9180 ti: d5d5c000 task.ti: d5d5c000
[  103.808017] EIP: 0060:[<c1357db4>] EFLAGS: 00010096 CPU: 0
[  103.808017] EIP is at __percpu_counter_add+0x14/0xa0
[  103.808017] EAX: 00000000 EBX: c007b394 ECX: 00000000 EDX: 00000001
[  103.808017] ESI: ffffffff EDI: ddd3d0c0 EBP: d5d5de60 ESP: d5d5de48
[  103.808017]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[  103.808017] CR0: 8005003b CR2: 1af23000 CR3: 1effb6c0 CR4: 000006b0
[  103.808017] Stack:
[  103.808017]  c1a972c0 00000001 00000000 c007b364 ffffffff ddd3d0c0 d5d5de84 c11552be
[  103.808017]  00000008 dc731800 dbd26c8c ddd3d0c0 ddd3d0c0 dbd26d70 dbd26d80 d5d5dea0
[  103.808017]  c11d994c dc731800 00000292 ddd3d0c0 dc731800 dbd26d70 d5d5deb8 c11d9b09
[  103.808017] Call Trace:
[  103.808017]  [<c11552be>] account_page_dirtied+0xae/0x180
[  103.808017]  [<c11d994c>] __set_page_dirty+0x3c/0xb0
[  103.808017]  [<c11d9b09>] mark_buffer_dirty+0x69/0xf0
[  103.808017]  [<c1239ce9>] ext4_commit_super+0x169/0x220
[  103.808017]  [<c11f5d58>] ? mb_cache_shrink+0x28/0x190
[  103.808017]  [<c123a941>] ext4_put_super+0xc1/0x320
[  103.808017]  [<c11c26a2>] ? dispose_list+0x32/0x40
[  103.808017]  [<c11c325b>] ? evict_inodes+0x9b/0xf0
[  103.808017]  [<c11ac1b4>] generic_shutdown_super+0x64/0xe0
[  103.808017]  [<c115a4e0>] ? unregister_shrinker+0x40/0x50
[  103.808017]  [<c11ac48f>] kill_block_super+0x1f/0x70
[  103.808017]  [<c11ac73d>] deactivate_locked_super+0x3d/0x70
[  103.808017]  [<c11acc6a>] deactivate_super+0x3a/0x60
[  103.808017]  [<c11c5c69>] cleanup_mnt+0x39/0x80
[  103.808017]  [<c11c5cf0>] __cleanup_mnt+0x10/0x20
[  103.808017]  [<c107c171>] task_work_run+0x91/0xb0
[  103.808017]  [<c1011103>] do_notify_resume+0x53/0x80
[  103.808017]  [<c16fc497>] work_notifysig+0x26/0x2b
[  103.808017] Code: b3 3e 3a 00 8b 44 24 04 8b 54 24 08 83 c4 0c 5b 5e 5f 5d c3 8d 76 00 55 89 e5 57 56 53 89 c3 83 ec 0c 89 55 ec 89 4d f0 8b 40 14 <64> 8b 30 89 f7 c1 ff 1f 01 d6 8b 55 08 11 cf 89 d1 c1 f9 1f 39
[  103.808017] EIP: [<c1357db4>] __percpu_counter_add+0x14/0xa0 SS:ESP 0068:d5d5de48
[  103.808017] CR2: 000000001af23000
[  103.808017] ---[ end trace 4f2efe63047f95c9 ]---
[  104.455856] scsi 2:0:0:0: Direct-Access     Linux    scsi_debug       0184 PQ: 0 ANSI: 6
[  104.462147] sd 2:0:0:0: Attached scsi generic sg2 type 0
[  104.468103] sd 2:0:0:0: [sdc] 585728 512-byte logical blocks: (299 MB/286 MiB)
[  104.472387] sd 2:0:0:0: [sdc] Write Protect is off
[  104.473314] sd 2:0:0:0: [sdc] Mode Sense: 73 00 10 08
[  104.480096] sd 2:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
[  104.568088] sd 2:0:0:0: [sdc] Attached SCSI disk

root@autopkgtest:/home/ubuntu/udisks2-2.1.6# uname -a
Linux autopkgtest 4.2.0-040200rc4-generic #201507271733 SMP Mon Jul 27 21:47:26 UTC 2015 i686 i686 i686 GNU/Linux

** Tags added: bug-exists-upstream

** Tags removed: bot-stop-nagging
** Tags added: kernel-bot-stop-nagging

** Tags removed: bug-exists-upstream kernel-bot-stop-nagging
** Tags added: bot-stop-nagging kernel-bug-exists-upstream

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1478623

Title:
  Kernel oops - blk_update_request: I/O error when running udisks2
  force_test_removal test

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  We noticed that the udisks2 autopkgtest is failing on i386 in the
  "forced removal" test, for example

    https://jenkins.qa.ubuntu.com/job/wily-adt-
  udisks2/ARCH=i386,label=adt/55/console

  I reproduced this locally, on this kernel

  ubuntu@autopkgtest:~$ uname -a
  Linux autopkgtest 4.1.0-2-generic #2-Ubuntu SMP Wed Jul 22 18:17:34 UTC 2015 i686 i686 i686 GNU/Linux

  and got the following spewed to console

  fs: forced removal ... [  303.782426] blk_update_request: I/O error, dev sdb, sector 0
  [  303.807400] BUG: unable to handle kernel paging request at 1afde000
  [  303.808010] IP: [<c1378626>] __percpu_counter_add+0x16/0x90
  [  303.808010] *pdpt = 000000000ee9b001 *pde = 0000000000000000 
  [  303.808010] Oops: 0000 [#1] SMP 
  [  303.808010] Modules linked in: scsi_debug btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c ppdev kvm_intel kvm joydev serio_raw 8250_fintek parport_pc parport i2c_piix4 mac_hid autofs4 psmouse pata_acpi floppy
  [  303.808010] CPU: 0 PID: 22573 Comm: umount Not tainted 4.1.0-2-generic #2-Ubuntu
  [  303.808010] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150604_211837-tipua 04/01/2014
  [  303.808010] task: dc75e5e0 ti: ce85a000 task.ti: ce85a000
  [  303.808010] EIP: 0060:[<c1378626>] EFLAGS: 00010092 CPU: 0
  [  303.808010] EIP is at __percpu_counter_add+0x16/0x90
  [  303.808010] EAX: 00000001 EBX: dbba9c08 ECX: 00000000 EDX: 00000001
  [  303.808010] ESI: ffffffff EDI: 00000000 EBP: ce85be6c ESP: ce85be54
  [  303.808010]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
  [  303.808010] CR0: 8005003b CR2: 1afde000 CR3: 1e9c88c0 CR4: 000007f0
  [  303.808010] Stack:
  [  303.808010]  c1aa7b40 00000001 00000000 dbba9be8 ffffffff decbfd60 ce85be88 c115bca4
  [  303.808010]  00000008 ddce5228 ddce5228 decbfd60 decbfd70 ce85bea4 c11e47f9 00000000
  [  303.808010]  00000286 ddce5228 d559cbd0 cdd41400 ce85beb4 c11e496f d3cc2000 00000000
  [  303.808010] Call Trace:
  [  303.808010]  [<c115bca4>] account_page_dirtied+0x74/0xf0
  [  303.808010]  [<c11e47f9>] __set_page_dirty+0x39/0xc0
  [  303.808010]  [<c11e496f>] mark_buffer_dirty+0x4f/0xb0
  [  303.808010]  [<c1246138>] ext4_commit_super+0x168/0x220
  [  303.808010]  [<c1246db1>] ext4_put_super+0xc1/0x310
  [  303.808010]  [<c11ce6a2>] ? dispose_list+0x32/0x40
  [  303.808010]  [<c11cf2fa>] ? evict_inodes+0xda/0xf0
  [  303.808010]  [<c11b6834>] generic_shutdown_super+0x64/0xe0
  [  303.808010]  [<c11616d0>] ? unregister_shrinker+0x40/0x50
  [  303.808010]  [<c11b6b2f>] kill_block_super+0x1f/0x70
  [  303.808010]  [<c11b6e0d>] deactivate_locked_super+0x3d/0x70
  [  303.808010]  [<c11b71f7>] deactivate_super+0x57/0x60
  [  303.808010]  [<c11d2099>] cleanup_mnt+0x39/0x90
  [  303.808010]  [<c11d2130>] __cleanup_mnt+0x10/0x20
  [  303.808010]  [<c107dbf1>] task_work_run+0xb1/0xd0
  [  303.808010]  [<c1010a63>] do_notify_resume+0x53/0x70
  [  303.808010]  [<c1717d17>] work_notifysig+0x26/0x2b
  [  303.808010] Code: 24 8b 54 24 04 83 c4 08 5b 5e 5f 5d c3 90 8d b4 26 00 00 00 00 55 89 e5 57 56 53 89 c3 89 d0 83 ec 0c 89 45 ec 89 4d f0 8b 7b 14 <64> 8b 37 89 7d e8 89 f7 c1 ff 1f 01 c6 11 cf 8b 4d 08 c1 f9 1f
  [  303.808010] EIP: [<c1378626>] __percpu_counter_add+0x16/0x90 SS:ESP 0068:ce85be54
  [  303.808010] CR2: 000000001afde000
  [  303.808010] ---[ end trace bd84bb1a9fa3ebd4 ]---
  [  304.463429] scsi 2:0:0:0: Direct-Access     Linux    scsi_debug       0184 PQ: 0 ANSI: 6
  [  304.468098] sd 2:0:0:0: Attached scsi generic sg2 type 0
  [  304.472038] sd 2:0:0:0: [sdc] 585728 512-byte logical blocks: (299 MB/286 MiB)
  [  304.476079] sd 2:0:0:0: [sdc] Write Protect is off
  [  304.476661] sd 2:0:0:0: [sdc] Mode Sense: 73 00 10 08
  [  304.484045] sd 2:0:0:0: [sdc] Write cache: enabled, read cache: enabled, supports DPO and FUA
  [  304.572090] sd 2:0:0:0: [sdc] Attached SCSI disk

  To reproduce, do something like this:

  $ adt-buildvm-ubuntu-cloud -r wily -a i386 # download a cloud image, fettle it a bit to be more useful
  $ qemu-system-i386 -m 2048 -net user -net nic,model=virtio -enable-kvm -nographic adt-wily*
  # login with ubuntu/ubuntu

  # apt-get update
  # apt-get dist-upgrade
  $ apt-get source udisks2
  $ cd udisks2-*
  $ cat debian/tests/control # install the test-deps
  # debian/tests/upstream-system # runs the testsuite, when it gets to test_force_removal you should see this bug. the testsuite hangs too.

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