e755f780865221252ef3321215c9796b78e7b1c5 in ubuntu_btrfs_kernel_fixes failed on 4.4 i386

[Po-Hsu Lin]

This test can pass if you run it independently. Even with aa9ddcd4b5557102fa25695c11904f249b4dec49
(just like bug 1821913)

Invoking test e755f780865221252ef3321215c9796b78e7b1c5

fix e755f780865221252ef3321215c9796b78e7b1c5

btrfs: fix null pointer dereference in clone_fs_devices when name is null

when one of the device path is missing btrfs_device name is null. So this
patch will check for that.

mount: /dev/loop0 is write-protected, mounting read-only
Performing full device TRIM (2.00GiB) ...
mount failed, kernel bug:
[ 8680.949850] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 1 transid 3 /dev/loop0
[ 8680.953724] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 2 transid 3 /dev/loop2
[ 8681.335859] =============================================================================
[ 8681.335879] BUG btrfs_extent_map (Tainted: G B ): Objects remaining in btrfs_extent_map on kmem_cache_close()
[ 8681.335899] -----------------------------------------------------------------------------

[ 8681.335917] INFO: Slab 0xf7360ac8 objects=34 used=1 fp=0xe8e45c30 flags=0x2800080
[ 8681.335962] CPU: 3 PID: 29896 Comm: modprobe Tainted: G B 4.4.0-145-generic #171-Ubuntu
[ 8681.335964] Hardware name: Dell Inc. PowerEdge R310/05XKKK, BIOS 1.8.2 08/17/2011
[ 8681.335965] c1b0f967 1c177eb0 00000286 e0dcdddc c13c089f f7360ac8 e0dcddfc e0dcde70
[ 8681.335969] c11cce82 c1a17524 f7360ac8 00000022 00000001 e8e45c30 02800080 656a624f
[ 8681.335973] 20737463 616d6572 6e696e69 6e692067 72746220 655f7366 6e657478 616d5f74
[ 8681.335976] Call Trace:
[ 8681.335984] [] dump_stack+0x58/0x79
[ 8681.335987] [] slab_err+0x82/0xa0
[ 8681.335989] [] ? __kmalloc+0x22d/0x240
[ 8681.335993] [] ? smp_call_function_many+0x1ad/0x220
[ 8681.335995] [] ? free_partial+0xa9/0x1b0
[ 8681.335996] [] ? free_partial+0xa9/0x1b0
[ 8681.335998] [] free_partial+0xce/0x1b0
[ 8681.336001] [] ? __flush_cpu_slab+0x40/0x40
[ 8681.336003] [] __kmem_cache_shutdown+0x42/0x80
[ 8681.336006] [] kmem_cache_destroy+0x162/0x1e0
[ 8681.336028] [] extent_map_exit+0x16/0x20 [btrfs]
[ 8681.336042] [] exit_btrfs_fs+0x26/0xfc [btrfs]
[ 8681.336044] [] SyS_delete_module+0x1af/0x200
[ 8681.336047] [] ? ____fput+0xd/0x10
[ 8681.336050] [] ? task_work_run+0x8f/0xa0
[ 8681.336052] [] ? exit_to_usermode_loop+0xb6/0xe0
[ 8681.336054] [] do_fast_syscall_32+0x9f/0x160
[ 8681.336057] [] sysenter_past_esp+0x3d/0x61
[ 8681.336060] INFO: Object 0xe8e450f0 @offset=240
[ 8681.336085] kmem_cache_destroy btrfs_extent_map: Slab cache still has objects
[ 8681.336114] CPU: 3 PID: 29896 Comm: modprobe Tainted: G B 4.4.0-145-generic #171-Ubuntu
[ 8681.336115] Hardware name: Dell Inc. PowerEdge R310/05XKKK, BIOS 1.8.2 08/17/2011
[ 8681.336116] c1b0f967 1c177eb0 00000286 e0dcded4 c13c089f f55b0cc0 f55b0d34 e0dcdf0c
[ 8681.336120] c119e880 c1a15d8c ec0edb20 e0dcdf04 000d986b e0dcdeec e0dcdeec e0dcdef4
[ 8681.336124] e0dcdef4 1c177eb0 007b5f34 f8dd0880 e0dcc000 e0dcdf14 f8d48f86 e0dcdf1c
[ 8681.336127] Call Trace:
[ 8681.336129] [] dump_stack+0x58/0x79
[ 8681.336131] [] kmem_cache_destroy+0x1b0/0x1e0
[ 8681.336146] [] extent_map_exit+0x16/0x20 [btrfs]
[ 8681.336160] [] exit_btrfs_fs+0x26/0xfc [btrfs]
[ 8681.336162] [] SyS_delete_module+0x1af/0x200
[ 8681.336164] [] ? ____fput+0xd/0x10
[ 8681.336166] [] ? task_work_run+0x8f/0xa0
[ 8681.336168] [] ? exit_to_usermode_loop+0xb6/0xe0
[ 8681.336170] [] do_fast_syscall_32+0x9f/0x160
[ 8681.336172] [] sysenter_past_esp+0x3d/0x61
[ 8681.455355] Btrfs loaded
[ 8681.483803] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 1 transid 6 /dev/loop0
[ 8681.539920] BTRFS info (device loop0): allowing degraded mounts
[ 8681.539929] BTRFS info (device loop0): disk space caching is enabled
[ 8681.539930] BTRFS: has skinny extents
[ 8681.539932] BTRFS: flagging fs with big metadata feature
[ 8681.540722] BTRFS warning (device loop0): devid 2 uuid 5af56aa2-70cd-446c-9c91-e42ce244669e is missing
[ 8681.705354] BTRFS info (device loop0): relocating block group 676855808 flags 2
[ 8681.821174] BTRFS info (device loop0): relocating block group 20971520 flags 18
[ 8681.969227] BTRFS info (device loop0): disk added /dev/loop3
umount: /tmp/mnt-e755f780865221252ef3321215c9796b78e7b1c5: not mounted
losetup: /dev/loop0: detach failed: No such device or address
losetup: /dev/loop2: detach failed: No such device or address
losetup: /dev/loop3: detach failed: No such device or address

Found kernel issue:

[ 8680.949850] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 1 transid 3 /dev/loop0
[ 8680.953724] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 2 transid 3 /dev/loop2
[ 8681.335859] =============================================================================
[ 8681.335879] BUG btrfs_extent_map (Tainted: G B ): Objects remaining in btrfs_extent_map on kmem_cache_close()
[ 8681.335899] -----------------------------------------------------------------------------

[ 8681.335917] INFO: Slab 0xf7360ac8 objects=34 used=1 fp=0xe8e45c30 flags=0x2800080
[ 8681.335962] CPU: 3 PID: 29896 Comm: modprobe Tainted: G B 4.4.0-145-generic #171-Ubuntu
[ 8681.335964] Hardware name: Dell Inc. PowerEdge R310/05XKKK, BIOS 1.8.2 08/17/2011
[ 8681.335965] c1b0f967 1c177eb0 00000286 e0dcdddc c13c089f f7360ac8 e0dcddfc e0dcde70
[ 8681.335969] c11cce82 c1a17524 f7360ac8 00000022 00000001 e8e45c30 02800080 656a624f
[ 8681.335973] 20737463 616d6572 6e696e69 6e692067 72746220 655f7366 6e657478 616d5f74
[ 8681.335976] Call Trace:
[ 8681.335984] [] dump_stack+0x58/0x79
[ 8681.335987] [] slab_err+0x82/0xa0
[ 8681.335989] [] ? __kmalloc+0x22d/0x240
[ 8681.335993] [] ? smp_call_function_many+0x1ad/0x220
[ 8681.335995] [] ? free_partial+0xa9/0x1b0
[ 8681.335996] [] ? free_partial+0xa9/0x1b0
[ 8681.335998] [] free_partial+0xce/0x1b0
[ 8681.336001] [] ? __flush_cpu_slab+0x40/0x40
[ 8681.336003] [] __kmem_cache_shutdown+0x42/0x80
[ 8681.336006] [] kmem_cache_destroy+0x162/0x1e0
[ 8681.336028] [] extent_map_exit+0x16/0x20 [btrfs]
[ 8681.336042] [] exit_btrfs_fs+0x26/0xfc [btrfs]
[ 8681.336044] [] SyS_delete_module+0x1af/0x200
[ 8681.336047] [] ? ____fput+0xd/0x10
[ 8681.336050] [] ? task_work_run+0x8f/0xa0
[ 8681.336052] [] ? exit_to_usermode_loop+0xb6/0xe0
[ 8681.336054] [] do_fast_syscall_32+0x9f/0x160
[ 8681.336057] [] sysenter_past_esp+0x3d/0x61
[ 8681.336060] INFO: Object 0xe8e450f0 @offset=240
[ 8681.336085] kmem_cache_destroy btrfs_extent_map: Slab cache still has objects
[ 8681.336114] CPU: 3 PID: 29896 Comm: modprobe Tainted: G B 4.4.0-145-generic #171-Ubuntu
[ 8681.336115] Hardware name: Dell Inc. PowerEdge R310/05XKKK, BIOS 1.8.2 08/17/2011
[ 8681.336116] c1b0f967 1c177eb0 00000286 e0dcded4 c13c089f f55b0cc0 f55b0d34 e0dcdf0c
[ 8681.336120] c119e880 c1a15d8c ec0edb20 e0dcdf04 000d986b e0dcdeec e0dcdeec e0dcdef4
[ 8681.336124] e0dcdef4 1c177eb0 007b5f34 f8dd0880 e0dcc000 e0dcdf14 f8d48f86 e0dcdf1c
[ 8681.336127] Call Trace:
[ 8681.336129] [] dump_stack+0x58/0x79
[ 8681.336131] [] kmem_cache_destroy+0x1b0/0x1e0
[ 8681.336146] [] extent_map_exit+0x16/0x20 [btrfs]
[ 8681.336160] [] exit_btrfs_fs+0x26/0xfc [btrfs]
[ 8681.336162] [] SyS_delete_module+0x1af/0x200
[ 8681.336164] [] ? ____fput+0xd/0x10
[ 8681.336166] [] ? task_work_run+0x8f/0xa0
[ 8681.336168] [] ? exit_to_usermode_loop+0xb6/0xe0
[ 8681.336170] [] do_fast_syscall_32+0x9f/0x160
[ 8681.336172] [] sysenter_past_esp+0x3d/0x61
[ 8681.455355] Btrfs loaded
[ 8681.483803] BTRFS: device fsid 197ab202-8eef-4a3d-bca6-98f07f73a2e6 devid 1 transid 6 /dev/loop0
[ 8681.539920] BTRFS info (device loop0): allowing degraded mounts
[ 8681.539929] BTRFS info (device loop0): disk space caching is enabled
[ 8681.539930] BTRFS: has skinny extents
[ 8681.539932] BTRFS: flagging fs with big metadata feature
[ 8681.540722] BTRFS warning (device loop0): devid 2 uuid 5af56aa2-70cd-446c-9c91-e42ce244669e is missing
[ 8681.705354] BTRFS info (device loop0): relocating block group 676855808 flags 2
[ 8681.821174] BTRFS info (device loop0): relocating block group 20971520 flags 18
[ 8681.969227] BTRFS info (device loop0): disk added /dev/loop3
[ 8682.152909] Test e755f780865221252ef3321215c9796b78e7b1c5 returned 0

FAIL: e755f780865221252ef3321215c9796b78e7b1c5 (ret=1)

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-143-generic 4.4.0-143.169
ProcVersionSignature: User Name 4.4.0-143.169-generic 4.4.170
Uname: Linux 4.4.0-143-generic i686
AlsaDevices:
 total 0
 crw-rw---- 1 root audio 116, 1 Apr 1 03:35 seq
 crw-rw---- 1 root audio 116, 33 Apr 1 03:35 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.20.1-0ubuntu2.18
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:
CurrentDmesg:

Date: Mon Apr 1 08:35:27 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
MachineType: Dell Inc. PowerEdge R310
PciMultimedia:

ProcFB:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-143-generic root=UUID=6aaa11f6-d386-4c0c-b4b8-38e6c408980a ro
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-143-generic N/A
 linux-backports-modules-4.4.0-143-generic N/A
 linux-firmware 1.157.21
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/18/2012
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.11.0
dmi.board.name: 05XKKK
dmi.board.vendor: Dell Inc.
dmi.board.version: A05
dmi.chassis.type: 23
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.11.0:bd09/18/2012:svnDellInc.:pnPowerEdgeR310:pvr:rvnDellInc.:rn05XKKK:rvrA05:cvnDellInc.:ct23:cvr:
dmi.product.name: PowerEdge R310
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1822560

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Po-Hsu Lin (cypressyew)]

This is a dup as it tried to remove the btrfs module with modprobe -r after 6113077cd319e747875ec71227d2b5cb54e08c76