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From: Stuart Shelton <srcshelton@gmail.com>
To: linux-btrfs@vger.kernel.org
Subject: kernel 5.11.x: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:281
Date: Thu, 18 Mar 2021 10:50:04 +0000	[thread overview]
Message-ID: <7A5485BB-0628-419D-A4D3-27B1AF47E25A@gmail.com> (raw)

Hi all,

I recently migrated an existing ext4 fs using btrfs-convert (setting nodesize to 32k and enabling optional features `extref`, `skinny-metadata` and `no-holes` - the first two of which I believe are now the default in any case?), but I’m subsequently seeing very frequent BUGs being output by the kernel:

[  821.843637] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:281
[  821.843641] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 28214, name: podman
[  821.843644] CPU: 3 PID: 28214 Comm: podman Tainted: G        W         5.11.6 #15
[  821.843646] Hardware name: Dell Inc. PowerEdge R330/084XW4, BIOS 2.11.0 12/08/2020
[  821.843647] Call Trace:
[  821.843650]  dump_stack+0xa1/0xfb
[  821.843656]  ___might_sleep+0x144/0x160
[  821.843659]  mutex_lock+0x17/0x40
[  821.843662]  kernfs_remove_by_name_ns+0x1f/0x80
[  821.843666]  sysfs_remove_group+0x7d/0xe0
[  821.843668]  sysfs_remove_groups+0x28/0x40
[  821.843670]  kobject_del+0x2a/0x80
[  821.843672]  btrfs_sysfs_del_one_qgroup+0x2b/0x40 [btrfs]
[  821.843685]  __del_qgroup_rb+0x12/0x150 [btrfs]
[  821.843696]  btrfs_remove_qgroup+0x288/0x2a0 [btrfs]
[  821.843707]  btrfs_ioctl+0x3129/0x36a0 [btrfs]
[  821.843717]  ? __mod_lruvec_page_state+0x5e/0xb0
[  821.843719]  ? page_add_new_anon_rmap+0xbc/0x150
[  821.843723]  ? kfree+0x1b4/0x300
[  821.843725]  ? mntput_no_expire+0x55/0x330
[  821.843728]  __x64_sys_ioctl+0x5a/0xa0
[  821.843731]  do_syscall_64+0x33/0x70
[  821.843733]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  821.843736] RIP: 0033:0x4cd3fb
[  821.843739] Code: fa ff eb bd e8 86 8b fa ff e9 61 ff ff ff cc e8 fb 55 fa ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[  821.843741] RSP: 002b:000000c000906b20 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[  821.843744] RAX: ffffffffffffffda RBX: 000000c000050000 RCX: 00000000004cd3fb
[  821.843745] RDX: 000000c000906b98 RSI: 000000004010942a RDI: 000000000000000f
[  821.843747] RBP: 000000c000907cd0 R08: 000000c000622901 R09: 0000000000000000
[  821.843748] R10: 000000c000d992c0 R11: 0000000000000206 R12: 000000000000012d
[  821.843749] R13: 000000000000012c R14: 0000000000000200 R15: 0000000000000049

The system starts 24 containers on boot via `podman`, and by the time this process is complete there were (on the last power-cycle) 10 such BUG reports logged.

Is this a recognised issue?


Support information:

uname:
Linux dellr330 5.11.6 #15 SMP Wed Mar 17 15:18:52 GMT 2021 x86_64 Intel(R) Xeon(R) CPU E3-1240L v5 @ 2.10GHz GenuineIntel GNU/Linux

version:
btrfs-progs v5.10.1 

btrfs fi:
Label: 'space'  uuid: 94cc0dca-4a1f-4d18-bdf8-943982d1b6ff
        Total devices 1 FS bytes used 163.44GiB
        devid    1 size 1.56TiB used 231.24GiB path /dev/mapper/storage-space

btrfs df:
Data, single: total=221.16GiB, used=154.74GiB
System, single: total=4.00MiB, used=384.00KiB
Metadata, single: total=10.08GiB, used=8.70GiB
GlobalReserve, single: total=512.00MiB, used=0.00B

fstab entry:
LABEL=space /space btrfs noatime,compress-force=zstd:2,user_subvol_rm_allowed,nofail 0 2

Other dmesg entries:
[   61.973985] Btrfs loaded, crc32c=crc32c-intel, zoned=yes
[   63.310454] BTRFS: device label space devid 1 transid 24453 /dev/mapper/storage-space scanned by btrfs (6546)
[   64.471111] BTRFS info (device dm-1): force zstd compression, level 2
[   64.471126] BTRFS info (device dm-1): disk space caching is enabled
[   64.471130] BTRFS info (device dm-1): has skinny extents
[   81.247002] BTRFS info (device dm-1): checking UUID tree
[  104.987371] BTRFS error (device dm-1): qgroup scan failed with -4
[  106.615043] BTRFS error (device dm-1): qgroup scan failed with -4
[  107.258435] BTRFS error (device dm-1): qgroup scan failed with -4
[  107.962191] BTRFS error (device dm-1): qgroup scan failed with -4
[  118.289293] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:281
[  118.289296] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 9003, name: podman
[  118.289298] CPU: 4 PID: 9003 Comm: podman Not tainted 5.11.6 #15
[  118.289301] Hardware name: Dell Inc. PowerEdge R330/084XW4, BIOS 2.11.0 12/08/2020
[  118.289301] Call Trace:
[  118.289303]  dump_stack+0xa1/0xfb
[  118.289308]  ___might_sleep+0x144/0x160
[  118.289310]  mutex_lock+0x17/0x40
[  118.289313]  kernfs_remove_by_name_ns+0x1f/0x80
[  118.289317]  sysfs_remove_group+0x7d/0xe0
[  118.289319]  sysfs_remove_groups+0x28/0x40
[  118.289320]  kobject_del+0x2a/0x80
[  118.289322]  btrfs_sysfs_del_one_qgroup+0x2b/0x40 [btrfs]
[  118.289334]  __del_qgroup_rb+0x12/0x150 [btrfs]
[  118.289343]  btrfs_remove_qgroup+0x288/0x2a0 [btrfs]
[  118.289352]  btrfs_ioctl+0x3129/0x36a0 [btrfs]
[  118.289361]  ? __mod_lruvec_page_state+0x5e/0xb0
[  118.289363]  ? page_add_new_anon_rmap+0xbc/0x150
[  118.289366]  ? kfree+0x1b4/0x300
[  118.289368]  ? mntput_no_expire+0x55/0x330
[  118.289371]  __x64_sys_ioctl+0x5a/0xa0
[  118.289374]  do_syscall_64+0x33/0x70
[  118.289375]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  118.289378] RIP: 0033:0x4cd3fb
[  118.289380] Code: fa ff eb bd e8 86 8b fa ff e9 61 ff ff ff cc e8 fb 55 fa ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30
[  118.289382] RSP: 002b:000000c0005e2b20 EFLAGS: 00000206 ORIG_RAX: 0000000000000010
[  118.289384] RAX: ffffffffffffffda RBX: 000000c000050000 RCX: 00000000004cd3fb
[  118.289385] RDX: 000000c0005e2b98 RSI: 000000004010942a RDI: 0000000000000012
[  118.289386] RBP: 000000c0005e3cd0 R08: 000000c000582c01 R09: 0000000000000000
[  118.289387] R10: 000000c000708b70 R11: 0000000000000206 R12: 00000000000000b8
[  118.289388] R13: 00000000000000b7 R14: 0000000000000200 R15: 0000000000000049
[  498.003691] BTRFS info (device dm-1): qgroup scan completed (inconsistency flag cleared)
[  499.522376] BTRFS error (device dm-1): qgroup scan failed with -4
[  499.975886] BTRFS error (device dm-1): qgroup scan failed with -4



             reply	other threads:[~2021-03-18 10:51 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-18 10:50 Stuart Shelton [this message]
2021-03-18 11:24 ` kernel 5.11.x: BUG: sleeping function called from invalid context at kernel/locking/mutex.c:281 Filipe Manana

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