Filesystem corruption (v4.14) & btrfs-progs btrfs check --repair loop

Filesystem corruption (v4.14) & btrfs-progs btrfs check --repair loop

[Joerie de Gram]

[-- Attachment #1: Type: text/plain, Size: 2316 bytes --]

Hi,

My filesytem appears to have become corrupted and btrfs check appears
to get stuck in an infinite loop trying to repair it.

The issue initially manifested itself as a BUG (RIP:
btrfs_set_item_key_safe+0x132/0x190) on v4.14.8 - see attached
dmesg.txt. I do not know whether this is the cause of the corruption
or a result.

After the reboot I got a WARNING, updated the kernel (4.14.11) and ran
into similar BUGs trying to reproduce it (dmesg2.txt), finally ending
up with an unmountable filesystem. A repair attempt seems to get stuck
in a loop.

In case it's relevant, the filesystem was receiving some random writes
over NFS as the BUGs hit.

# btrfs check /dev/sda3
Checking filesystem on /dev/sda3
UUID: e72d50ec-9478-4d17-8809-cd8343dace4b
checking extents
checking free space cache
cache and super generation don't match, space cache will be invalidated
checking fs roots
root 5 inode 1151247 errors 180, file extent overlap, file extent discount
Found file extent holes:
start: 634880, len: 5967872
ERROR: errors found in fs roots
found 169829797888 bytes used, error(s) found
total csum bytes: 107831016
total tree bytes: 384811008
total fs tree bytes: 245907456
total extent tree bytes: 21479424
btree space waste bytes: 48762162
file data blocks allocated: 169910652928
 referenced 174051184640

# btrfs check --repair /dev/sda3
enabling repair mode
Checking filesystem on /dev/sda3
UUID: e72d50ec-9478-4d17-8809-cd8343dace4b
Fixed 0 roots.
checking extents
No device size related problem found
checking free space cache
cache and super generation don't match, space cache will be invalidated
checking fs roots
root 5 inode 1151247 errors 180, file extent overlap, file extent discount
Found file extent holes:
start: 634880, len: 5967872
root 5 inode 1151247 errors 180, file extent overlap, file extent discount
Found file extent holes:
start: 634880, len: 5967872
root 5 inode 1151247 errors 180, file extent overlap, file extent discount
Found file extent holes:
start: 634880, len: 5967872
<repeated>

# uname -a
Linux box 4.14.11-1-ARCH #1 SMP PREEMPT Wed Jan 3 07:02:42 UTC 2018
x86_64 GNU/Linux

# btrfs fi show
...

Label: 'ssd-store'  uuid: e72d50ec-9478-4d17-8809-cd8343dace4b
Total devices 1 FS bytes used 158.17GiB
devid    1 size 260.00GiB used 216.99GiB path /dev/sda3

Thanks,
Joerie

[-- Attachment #2: dmesg.txt --]
[-- Type: text/plain, Size: 9853 bytes --]

Jan 04 23:29:45 box kernel: kernel BUG at fs/btrfs/ctree.c:3188!
Jan 04 23:29:45 box kernel: invalid opcode: 0000 [#1] PREEMPT SMP
Jan 04 23:29:45 box kernel: Modules linked in: ipt_REJECT nf_reject_ipv4 macvtap macvlan fuse rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache wireguard(O) ip6_udp_tunnel udp_tunnel vhost_net vhost tap ebtable_filter ebtables ip6table_filter ip6_tables devlink tun ccm 8021q mrp bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_conntrack nf_conntrack libcrc32c crc32c_generic iptable_filter nls_iso8859_1 nls_cp437 vfat fat sch_fq_codel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 intel_rapl iwlmvm x86_pkg_temp_thermal intel_powerclamp coretemp mac80211 kvm_intel i915 kvm led_class iTCO_wdt iTCO_vendor_support mousedev iwlwifi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel evdev mac_hid pcbc snd_hda_intel snd_hda_codec snd_hda_core cfg80211 e1000e igb aesni_intel aes_x86_64 crypto_simd
Jan 04 23:29:45 box kernel:  glue_helper cryptd snd_hwdep intel_cstate intel_rapl_perf snd_pcm pcspkr snd_timer drm_kms_helper snd ptp i2c_algo_bit pps_core i2c_i801 soundcore dca drm btusb intel_gtt mei_me mei shpchp hci_uart zfs(PO) btrtl agpgart zunicode(PO) btbcm btqca syscopyarea sysfillrect zavl(PO) btintel icp(PO) sysimgblt hid_generic bluetooth fb_sys_fops thermal wmi fan battery ov5693(C) acpi_pad ecdh_generic video v4l2_common rfkill videodev crc16 pinctrl_sunrisepoint i2c_hid pinctrl_intel intel_lpss_acpi intel_lpss acpi_als kfifo_buf tpm_infineon media tpm_tis tpm_tis_core industrialio button tpm zcommon(PO) nfsd znvpair(PO) spl(O) auth_rpcgss oid_registry nfs_acl sg lockd crypto_user grace sunrpc acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq usbhid hid sd_mod
Jan 04 23:29:45 box kernel:  crc32c_intel ahci libahci xhci_pci xhci_hcd libata usbcore scsi_mod usb_common serio vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
Jan 04 23:29:45 box kernel: CPU: 3 PID: 24734 Comm: nfsd Tainted: P         C O    4.14.8-1-ARCH #1
Jan 04 23:29:45 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 04 23:29:45 box kernel: task: ffff8f52cebd4c40 task.stack: ffff9e8892860000
Jan 04 23:29:45 box kernel: RIP: 0010:btrfs_set_item_key_safe+0x132/0x190 [btrfs]
Jan 04 23:29:45 box kernel: RSP: 0018:ffff9e8892863670 EFLAGS: 00010246
Jan 04 23:29:45 box kernel: RAX: 0000000000000000 RBX: ffff8f5369fe1310 RCX: 000000000009b000
Jan 04 23:29:45 box kernel: RDX: 000000000011910f RSI: ffff9e8892863776 RDI: ffff9e8892863687
Jan 04 23:29:45 box kernel: RBP: ffff8f53588f6000 R08: 0000000000001000 R09: 0000000000004000
Jan 04 23:29:45 box kernel: R10: 0000000000000002 R11: 0000000000002000 R12: 0000000000000047
Jan 04 23:29:45 box kernel: R13: ffff8f4f98385180 R14: ffff9e8892863776 R15: ffff8f5369fe1310
Jan 04 23:29:45 box kernel: FS:  0000000000000000(0000) GS:ffff8f537ed80000(0000) knlGS:0000000000000000
Jan 04 23:29:45 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 04 23:29:45 box kernel: CR2: 000056245b4c6000 CR3: 00000002dec09004 CR4: 00000000003626e0
Jan 04 23:29:45 box kernel: Call Trace:
Jan 04 23:29:45 box kernel:  __btrfs_drop_extents+0xb2a/0xdd0 [btrfs]
Jan 04 23:29:45 box kernel:  btrfs_log_changed_extents+0x333/0x640 [btrfs]
Jan 04 23:29:45 box kernel:  btrfs_log_inode+0x9aa/0x1140 [btrfs]
Jan 04 23:29:45 box kernel:  ? extent_write_cache_pages.constprop.56+0x2fe/0x3d0 [btrfs]
Jan 04 23:29:45 box kernel:  ? __mutex_lock.isra.2+0x459/0x510
Jan 04 23:29:45 box kernel:  btrfs_log_inode_parent+0x27f/0xa20 [btrfs]
Jan 04 23:29:45 box kernel:  ? schedule+0x2f/0x90
Jan 04 23:29:45 box kernel:  ? __filemap_fdatawrite_range+0xc1/0x100
Jan 04 23:29:45 box kernel:  ? wait_current_trans+0x4e/0xf0 [btrfs]
Jan 04 23:29:45 box kernel:  btrfs_log_dentry_safe+0x58/0x80 [btrfs]
Jan 04 23:29:45 box kernel:  btrfs_sync_file+0x2e5/0x430 [btrfs]
Jan 04 23:29:45 box kernel:  btrfs_file_write_iter+0x4d3/0x650 [btrfs]
Jan 04 23:29:45 box kernel:  do_iter_readv_writev+0x11a/0x170
Jan 04 23:29:45 box kernel:  do_iter_write+0x80/0x190
Jan 04 23:29:45 box kernel:  nfsd_vfs_write+0xce/0x3d0 [nfsd]
Jan 04 23:29:45 box kernel:  nfsd_write+0x179/0x260 [nfsd]
Jan 04 23:29:45 box kernel:  nfsd3_proc_write+0x9c/0x130 [nfsd]
Jan 04 23:29:45 box kernel:  nfsd_dispatch+0xe8/0x220 [nfsd]
Jan 04 23:29:45 box kernel:  svc_process_common+0x48c/0x660 [sunrpc]
Jan 04 23:29:45 box kernel:  ? nfsd_destroy+0x60/0x60 [nfsd]
Jan 04 23:29:45 box kernel:  svc_process+0xe4/0x1c0 [sunrpc]
Jan 04 23:29:45 box kernel:  nfsd+0xed/0x160 [nfsd]
Jan 04 23:29:45 box kernel:  kthread+0x118/0x130
Jan 04 23:29:45 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 04 23:29:45 box kernel:  ? do_group_exit+0x3a/0xa0
Jan 04 23:29:45 box kernel:  ret_from_fork+0x25/0x30
Jan 04 23:29:45 box kernel: Code: 7c 24 17 4c 89 f6 48 89 44 24 20 0f b6 44 24 0e 88 44 24 1f 48 8b 44 24 06 48 89 44 24 17 e8 c6 f3 ff ff 85 c0 0f 8f 31 ff ff ff <0f> 0b 41 8d 44 24 ff 48 8d 74 24 06 b9 11 00 00 00 4c 89 ef 48 
Jan 04 23:29:45 box kernel: RIP: btrfs_set_item_key_safe+0x132/0x190 [btrfs] RSP: ffff9e8892863670
Jan 04 23:29:45 box kernel: ---[ end trace 3a479be2ea36685f ]---
Jan 04 23:29:46 box kernel: BUG: unable to handle kernel paging request at ffff9e8892863bc8
Jan 04 23:29:46 box kernel: IP: btrfs_log_inode_parent+0x238/0xa20 [btrfs]
Jan 04 23:29:46 box kernel: PGD 42e106067 P4D 42e106067 PUD 42e107067 PMD 4070de067 PTE 0
Jan 04 23:29:46 box kernel: Oops: 0002 [#2] PREEMPT SMP
Jan 04 23:29:46 box kernel: Modules linked in: ipt_REJECT nf_reject_ipv4 macvtap macvlan fuse rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache wireguard(O) ip6_udp_tunnel udp_tunnel vhost_net vhost tap ebtable_filter ebtables ip6table_filter ip6_tables devlink tun ccm 8021q mrp bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_conntrack nf_conntrack libcrc32c crc32c_generic iptable_filter nls_iso8859_1 nls_cp437 vfat fat sch_fq_codel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 intel_rapl iwlmvm x86_pkg_temp_thermal intel_powerclamp coretemp mac80211 kvm_intel i915 kvm led_class iTCO_wdt iTCO_vendor_support mousedev iwlwifi crct10dif_pclmul crc32_pclmul ghash_clmulni_intel evdev mac_hid pcbc snd_hda_intel snd_hda_codec snd_hda_core cfg80211 e1000e igb aesni_intel aes_x86_64 crypto_simd
Jan 04 23:29:46 box kernel:  glue_helper cryptd snd_hwdep intel_cstate intel_rapl_perf snd_pcm pcspkr snd_timer drm_kms_helper snd ptp i2c_algo_bit pps_core i2c_i801 soundcore dca drm btusb intel_gtt mei_me mei shpchp hci_uart zfs(PO) btrtl agpgart zunicode(PO) btbcm btqca syscopyarea sysfillrect zavl(PO) btintel icp(PO) sysimgblt hid_generic bluetooth fb_sys_fops thermal wmi fan battery ov5693(C) acpi_pad ecdh_generic video v4l2_common rfkill videodev crc16 pinctrl_sunrisepoint i2c_hid pinctrl_intel intel_lpss_acpi intel_lpss acpi_als kfifo_buf tpm_infineon media tpm_tis tpm_tis_core industrialio button tpm zcommon(PO) nfsd znvpair(PO) spl(O) auth_rpcgss oid_registry nfs_acl sg lockd crypto_user grace sunrpc acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq usbhid hid sd_mod
Jan 04 23:29:46 box kernel:  crc32c_intel ahci libahci xhci_pci xhci_hcd libata usbcore scsi_mod usb_common serio vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
Jan 04 23:29:46 box kernel: CPU: 0 PID: 24732 Comm: nfsd Tainted: P      D  C O    4.14.8-1-ARCH #1
Jan 04 23:29:46 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 04 23:29:46 box kernel: task: ffff8f52f17eeac0 task.stack: ffff9e88928a0000
Jan 04 23:29:46 box kernel: RIP: 0010:btrfs_log_inode_parent+0x238/0xa20 [btrfs]
Jan 04 23:29:46 box kernel: RSP: 0018:ffff9e88928a3c10 EFLAGS: 00010286
Jan 04 23:29:46 box kernel: RAX: ffff8f5358885af8 RBX: ffff8f53588f6000 RCX: ffff9e8892863bc8
Jan 04 23:29:46 box kernel: RDX: ffff8f5358885800 RSI: ffff9e88928a3d90 RDI: ffff8f5358885a90
Jan 04 23:29:46 box kernel: RBP: ffff8f5358885800 R08: 0000000000002523 R09: 7fffffffffffffff
Jan 04 23:29:46 box kernel: R10: 0000000000000000 R11: ffff8f51c889ea80 R12: ffff8f53588f6000
Jan 04 23:29:46 box kernel: R13: ffff8f5348f8d640 R14: ffff9e88928a3d78 R15: 0000000000002523
Jan 04 23:29:46 box kernel: FS:  0000000000000000(0000) GS:ffff8f537ec00000(0000) knlGS:0000000000000000
Jan 04 23:29:46 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 04 23:29:46 box kernel: CR2: ffff9e8892863bc8 CR3: 00000002dec09006 CR4: 00000000003626f0
Jan 04 23:29:46 box kernel: Call Trace:
Jan 04 23:29:46 box kernel:  ? __filemap_fdatawrite_range+0xc1/0x100
Jan 04 23:29:46 box kernel:  ? wait_current_trans+0x4e/0xf0 [btrfs]
Jan 04 23:29:46 box kernel:  btrfs_log_dentry_safe+0x58/0x80 [btrfs]
Jan 04 23:29:46 box kernel:  btrfs_sync_file+0x2e5/0x430 [btrfs]
Jan 04 23:29:46 box kernel:  nfsd_commit+0xaf/0xe0 [nfsd]
Jan 04 23:29:46 box kernel:  nfsd3_proc_commit+0x6a/0xd0 [nfsd]
Jan 04 23:29:46 box kernel:  nfsd_dispatch+0xe8/0x220 [nfsd]
Jan 04 23:29:46 box kernel:  svc_process_common+0x48c/0x660 [sunrpc]
Jan 04 23:29:46 box kernel:  ? nfsd_destroy+0x60/0x60 [nfsd]
Jan 04 23:29:46 box kernel:  svc_process+0xe4/0x1c0 [sunrpc]
Jan 04 23:29:46 box kernel:  nfsd+0xed/0x160 [nfsd]
Jan 04 23:29:46 box kernel:  kthread+0x118/0x130
Jan 04 23:29:46 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 04 23:29:46 box kernel:  ret_from_fork+0x25/0x30
Jan 04 23:29:46 box kernel: Code: 89 c2 48 c1 e0 04 48 c1 e2 04 48 8d 84 05 f8 02 00 00 48 01 ea 48 8b 8a 00 03 00 00 48 89 b2 00 03 00 00 49 89 46 18 49 89 4e 20 <48> 89 31 8b 85 28 03 00 00 41 89 46 04 48 8b 7c 24 08 e8 d1 41 
Jan 04 23:29:46 box kernel: RIP: btrfs_log_inode_parent+0x238/0xa20 [btrfs] RSP: ffff9e88928a3c10
Jan 04 23:29:46 box kernel: CR2: ffff9e8892863bc8

[-- Attachment #3: dmesg2.txt --]
[-- Type: text/plain, Size: 23041 bytes --]

Jan 04 23:41:50 box kernel: WARNING: CPU: 2 PID: 504 at fs/btrfs/file.c:547 btrfs_drop_extent_cache+0x3e7/0x400 [btrfs]
Jan 04 23:41:50 box kernel: Modules linked in: nls_iso8859_1 nls_cp437 vfat fat snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic sch_fq_codel arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp i91
5 coretemp kvm_intel iwlmvm mac80211 kvm snd_hda_intel led_class iTCO_wdt iTCO_vendor_support mousedev crct10dif_pclmul evdev crc32_pclmul mac_hid ghash_clmulni_intel snd_hda_codec iwlwifi pcbc snd_hda_core aesni_
intel snd_hwdep aes_x86_64 snd_pcm snd_timer crypto_simd glue_helper snd cryptd e1000e drm_kms_helper intel_cstate igb cfg80211 intel_rapl_perf soundcore pcspkr zfs(PO) i2c_algo_bit dca ptp zunicode(PO) i2c_i801 p
ps_core zavl(PO) icp(PO) shpchp drm hci_uart hid_generic btusb btrtl intel_gtt agpgart mei_me btbcm btqca syscopyarea btintel sysfillrect mei sysimgblt fb_sys_fops bluetooth thermal fan
Jan 04 23:41:50 box kernel:  wmi battery ov5693(C) v4l2_common tpm_infineon videodev ecdh_generic rfkill crc16 i2c_hid video tpm_tis pinctrl_sunrisepoint pinctrl_intel intel_lpss_acpi intel_lpss tpm_tis_core acpi_
als tpm media kfifo_buf industrialio acpi_pad button nfsd auth_rpcgss oid_registry nfs_acl lockd zcommon(PO) znvpair(PO) grace spl(O) sunrpc sg crypto_user acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress
 zstd_compress xxhash raid6_pq usbhid hid sd_mod crc32c_intel ahci libahci xhci_pci xhci_hcd libata usbcore scsi_mod usb_common serio vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
Jan 04 23:41:50 box kernel: CPU: 2 PID: 504 Comm: mount Tainted: P         C O    4.14.8-1-ARCH #1
Jan 04 23:41:50 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 04 23:41:50 box kernel: task: ffff8edf6a1e0f40 task.stack: ffffbb46c2008000
Jan 04 23:41:50 box kernel: RIP: 0010:btrfs_drop_extent_cache+0x3e7/0x400 [btrfs]
Jan 04 23:41:50 box kernel: RSP: 0018:ffffbb46c200b590 EFLAGS: 00010287
Jan 04 23:41:50 box kernel: RAX: ffff8edf5d736350 RBX: ffff8edf68a90700 RCX: 0000000000000000
Jan 04 23:41:50 box kernel: RDX: 000000000009afff RSI: 00000000000a4000 RDI: ffff8edf5d736330
Jan 04 23:41:50 box kernel: RBP: ffff8edf69ac9f00 R08: 00000000000a4000 R09: 0000000000000001
Jan 04 23:41:50 box kernel: R10: 0000000000000000 R11: ffff8edf69e03150 R12: 00000000000a4000
Jan 04 23:41:50 box kernel: R13: ffff8edf5d736520 R14: 00000000000a4000 R15: ffff8edf68a90700
Jan 04 23:41:50 box kernel: FS:  00007ff8f4224780(0000) GS:ffff8edf7ed00000(0000) knlGS:0000000000000000
Jan 04 23:41:50 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 04 23:41:50 box kernel: CR2: 00007f048093f650 CR3: 000000042b31c006 CR4: 00000000003606e0
Jan 04 23:41:50 box kernel: Call Trace:
Jan 04 23:41:50 box kernel:  __btrfs_drop_extents+0x590/0xdd0 [btrfs]
Jan 04 23:41:50 box kernel:  ? generic_bin_search.constprop.37+0xf7/0x200 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_set_path_blocking+0x3a/0x60 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_search_slot+0x84c/0x9f0 [btrfs]
Jan 04 23:41:50 box kernel:  btrfs_drop_extents+0x5a/0x80 [btrfs]
Jan 04 23:41:50 box kernel:  replay_one_extent+0x657/0x750 [btrfs]
Jan 04 23:41:50 box kernel:  replay_one_buffer+0x28d/0x7d0 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_search_slot+0x84c/0x9f0 [btrfs]
Jan 04 23:41:50 box kernel:  ? mark_extent_buffer_accessed+0x54/0x70 [btrfs]
Jan 04 23:41:50 box kernel:  ? find_extent_buffer+0x6d/0x90 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_get_token_64+0x103/0x120 [btrfs]
Jan 04 23:41:50 box kernel:  walk_down_log_tree+0x149/0x300 [btrfs]
Jan 04 23:41:50 box kernel:  walk_log_tree+0xc9/0x1b0 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_read_tree_root+0x9b/0x110 [btrfs]
Jan 04 23:41:50 box kernel:  btrfs_recover_log_trees+0x1d9/0x440 [btrfs]
Jan 04 23:41:50 box kernel:  ? replay_one_extent+0x750/0x750 [btrfs]
Jan 04 23:41:50 box kernel:  open_ctree+0x1fbd/0x2410 [btrfs]
Jan 04 23:41:50 box kernel:  ? btrfs_mount+0xe0e/0xf10 [btrfs]
Jan 04 23:41:50 box kernel:  btrfs_mount+0xe0e/0xf10 [btrfs]
Jan 04 23:41:50 box kernel:  ? pcpu_alloc_area+0xc0/0x130
Jan 04 23:41:50 box kernel:  ? pcpu_next_unpop+0x37/0x50
Jan 04 23:41:50 box kernel:  ? pcpu_alloc+0x2fc/0x670
Jan 04 23:41:50 box kernel:  mount_fs+0x30/0x150
Jan 04 23:41:50 box kernel:  vfs_kern_mount.part.23+0x54/0x100
Jan 04 23:41:50 box kernel:  btrfs_mount+0x188/0xf10 [btrfs]
Jan 04 23:41:50 box kernel:  ? pcpu_alloc_area+0xc0/0x130
Jan 04 23:41:50 box kernel:  ? pcpu_next_unpop+0x37/0x50
Jan 04 23:41:50 box kernel:  ? pcpu_alloc+0x2fc/0x670
Jan 04 23:41:50 box kernel:  mount_fs+0x30/0x150
Jan 04 23:41:50 box kernel:  vfs_kern_mount.part.23+0x54/0x100
Jan 04 23:41:50 box kernel:  do_mount+0x5bf/0xc70
Jan 04 23:41:50 box kernel:  ? _copy_from_user+0x37/0x60
Jan 04 23:41:50 box kernel:  ? kmem_cache_alloc_trace+0x99/0x1b0
Jan 04 23:41:50 box kernel:  SyS_mount+0x80/0xd0
Jan 04 23:41:50 box kernel:  entry_SYSCALL_64_fastpath+0x1a/0xa5
Jan 04 23:41:50 box kernel: RIP: 0033:0x7ff8f3b1ad9a
Jan 04 23:41:50 box kernel: RSP: 002b:00007ffde4f2e9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
Jan 04 23:41:50 box kernel: RAX: ffffffffffffffda RBX: 00007ff8f3e1ecd9 RCX: 00007ff8f3b1ad9a
Jan 04 23:41:50 box kernel: RDX: 0000556b1eed9460 RSI: 0000556b1eed9540 RDI: 0000556b1eedb1f0
Jan 04 23:41:50 box kernel: RBP: 00007ff8f40301a4 R08: 0000556b1eed94d0 R09: ffffffffffffffa8
Jan 04 23:41:50 box kernel: R10: 0000000000200000 R11: 0000000000000246 R12: 0000556b1eed9340
Jan 04 23:41:50 box kernel: R13: 00007ffde4f2ed18 R14: 0000556b1d688d00 R15: 00000000ffffffff
Jan 04 23:41:50 box kernel: Code: 14 00 00 00 00 48 89 54 24 08 e9 8e fc ff ff 49 89 4f 58 49 03 56 50 48 29 f2 49 89 57 50 49 8b 46 38 49 89 47 38 e9 d2 fe ff ff <0f> ff e9 4d fc ff ff e8 0d 61 a6 e1 0f 1f 00 66 2e 0f 1f 84 00 

<reboot due to kernel upgrade>

Jan 05 00:34:06 box kernel: kernel BUG at fs/btrfs/file.c:932!
Jan 05 00:34:06 box kernel: invalid opcode: 0000 [#1] PREEMPT SMP PTI
Jan 05 00:34:06 box kernel: Modules linked in: macvtap macvlan vhost_net vhost tap ebtable_filter ebtables ip6table_filter ip6_tables devlink tun ccm 8021q mrp bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_conntrack nf_conntrack libcrc32c crc32c_generic iptable_filter nls_iso8859_1 nls_cp437 vfat fat snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic sch_fq_codel arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm iwlmvm iTCO_wdt iTCO_vendor_support mac80211 i915 led_class crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc iwlwifi cfg80211 drm_kms_helper snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep aesni_intel e1000e snd_pcm aes_x86_64 drm crypto_simd glue_helper cryptd intel_cstate intel_rapl_perf snd_timer igb pcspkr snd ptp i2c_i801 pps_core i2c_algo_bit
Jan 05 00:34:06 box kernel:  dca soundcore btusb intel_gtt hci_uart agpgart zfs(PO) mei_me btrtl syscopyarea btbcm btqca zunicode(PO) sysfillrect mei shpchp btintel evdev zavl(PO) mousedev icp(PO) sysimgblt mac_hid bluetooth fb_sys_fops fan wmi thermal battery ov5693(C) ecdh_generic rfkill crc16 v4l2_common videodev pinctrl_sunrisepoint pinctrl_intel video intel_lpss_acpi i2c_hid intel_lpss media tpm_infineon tpm_tis acpi_pad tpm_tis_core button tpm acpi_als kfifo_buf industrialio nfsd auth_rpcgss oid_registry nfs_acl lockd grace zcommon(PO) znvpair(PO) sunrpc spl(O) sg crypto_user acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq hid_generic usbhid hid sd_mod crc32c_intel ahci libahci xhci_pci libata xhci_hcd scsi_mod usbcore usb_common serio vfio_pci irqbypass vfio_virqfd
Jan 05 00:34:06 box kernel:  vfio_iommu_type1 vfio
Jan 05 00:34:06 box kernel: CPU: 1 PID: 4868 Comm: kworker/u8:4 Tainted: P         C O    4.14.11-1-ARCH #1
Jan 05 00:34:06 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 05 00:34:06 box kernel: Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
Jan 05 00:34:06 box kernel: task: ffff9d6069568f40 task.stack: ffffc1b402aa4000
Jan 05 00:34:06 box kernel: RIP: 0010:__btrfs_drop_extents+0x94b/0xdd0 [btrfs]
Jan 05 00:34:06 box kernel: RSP: 0018:ffffc1b402aa7bf8 EFLAGS: 00010297
Jan 05 00:34:06 box kernel: RAX: 000000000026f000 RBX: 0000000000000001 RCX: ffffc1b402aa7ba0
Jan 05 00:34:06 box kernel: RDX: 000000000000003a RSI: 0000000000000039 RDI: 00000000ffffffff
Jan 05 00:34:06 box kernel: RBP: 000000000064c000 R08: ffffc1b402aa7ba8 R09: ffffc1b402aa7bb0
Jan 05 00:34:06 box kernel: R10: 0000000000000002 R11: 0000000000002000 R12: 000000000000003b
Jan 05 00:34:06 box kernel: R13: 0000000000000001 R14: ffff9d60474a5a40 R15: ffff9d6069006070
Jan 05 00:34:06 box kernel: FS:  0000000000000000(0000) GS:ffff9d607ec80000(0000) knlGS:0000000000000000
Jan 05 00:34:06 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 05 00:34:06 box kernel: CR2: 00007f063f534000 CR3: 00000002e500a006 CR4: 00000000003626e0
Jan 05 00:34:06 box kernel: Call Trace:
Jan 05 00:34:06 box kernel:  insert_reserved_file_extent.constprop.71+0x94/0x2f0 [btrfs]
Jan 05 00:34:06 box kernel:  btrfs_finish_ordered_io+0x338/0x810 [btrfs]
Jan 05 00:34:06 box kernel:  ? __switch_to+0x487/0x4e0
Jan 05 00:34:06 box kernel:  ? __switch_to+0x487/0x4e0
Jan 05 00:34:06 box kernel:  btrfs_worker_helper+0x70/0x330 [btrfs]
Jan 05 00:34:06 box kernel:  process_one_work+0x1db/0x410
Jan 05 00:34:06 box kernel:  worker_thread+0x2b/0x3d0
Jan 05 00:34:06 box kernel:  ? process_one_work+0x410/0x410
Jan 05 00:34:06 box kernel:  kthread+0x118/0x130
Jan 05 00:34:06 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 05 00:34:06 box kernel:  ? do_group_exit+0x3a/0xa0
Jan 05 00:34:06 box kernel:  ret_from_fork+0x1f/0x30
Jan 05 00:34:06 box kernel: Code: 00 00 48 89 84 24 95 00 00 00 41 8b 47 40 75 09 80 fa 6c 0f 84 a1 01 00 00 4d 8b 37 e9 45 f8 ff ff 49 8b 1f 89 c5 e9 ce fe ff ff <0f> 0b 45 85 ed 0f 8f 85 02 00 00 85 db 0f 84 cc fb ff ff 48 8b 
Jan 05 00:34:06 box kernel: RIP: __btrfs_drop_extents+0x94b/0xdd0 [btrfs] RSP: ffffc1b402aa7bf8

Jan 05 11:45:44 box kernel: WARNING: CPU: 0 PID: 1781 at fs/nfsd/nfsproc.c:810 nfserrno+0x5c/0x70 [nfsd]
Jan 05 11:45:44 box kernel: Modules linked in: macvtap macvlan vhost_net vhost tap ebtable_filter ebtables ip6table_filter ip6_tables devlink tun ccm 8021q mrp bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 xt_tcpudp xt_conntrack nf_conntrack libcrc32c crc32c_generic iptable_filter nls_iso8859_1 nls_cp437 vfat fat sch_fq_codel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul iTCO_wdt iTCO_vendor_support iwlmvm ghash_clmulni_intel pcbc mac80211 snd_hda_intel aesni_intel snd_hda_codec led_class aes_x86_64 crypto_simd glue_helper cryptd intel_cstate zfs(PO) iwlwifi snd_hda_core zunicode(PO) pcspkr intel_rapl_perf snd_hwdep zavl(PO) e1000e i2c_i801 icp(PO) i915 snd_pcm cfg80211 snd_timer snd soundcore4.14.11
Jan 05 11:45:44 box kernel:  igb ptp pps_core evdev mousedev dca mac_hid btusb btrtl hci_uart thermal fan wmi btbcm btqca btintel battery i2c_algo_bit bluetooth drm_kms_helper drm video pinctrl_sunrisepoint ecdh_generic pinctrl_intel rfkill crc16 ov5693(C) i2c_hid intel_lpss_acpi intel_lpss v4l2_common intel_gtt videodev agpgart mei_me media tpm_infineon syscopyarea sysfillrect tpm_tis sysimgblt fb_sys_fops acpi_pad button tpm_tis_core mei shpchp tpm acpi_als kfifo_buf industrialio nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc zcommon(PO) znvpair(PO) spl(O) sg crypto_user acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq hid_generic usbhid hid sd_mod ahci libahci crc32c_intel xhci_pci libata xhci_hcd scsi_mod usbcore usb_common serio vfio_pci irqbypass vfio_virqfd
Jan 05 11:45:44 box kernel:  vfio_iommu_type1 vfio
Jan 05 11:45:44 box kernel: CPU: 0 PID: 1781 Comm: nfsd Tainted: P         C O    4.14.11-1-ARCH #1
Jan 05 11:45:44 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 05 11:45:44 box kernel: task: ffff909821cfeac0 task.stack: ffffaf670230c000
Jan 05 11:45:44 box kernel: RIP: 0010:nfserrno+0x5c/0x70 [nfsd]
Jan 05 11:45:44 box kernel: RSP: 0018:ffffaf670230fd70 EFLAGS: 00010282
Jan 05 11:45:44 box kernel: RAX: 000000000000001d RBX: 0000000005000000 RCX: 0000000000000000
Jan 05 11:45:44 box kernel: RDX: 0000000000000000 RSI: ffff90983ec13598 RDI: ffff90983ec13598
Jan 05 11:45:44 box kernel: RBP: ffffaf670230fde8 R08: 0000000000000001 R09: 00000000000003e4
Jan 05 11:45:44 box kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff90980b31dd80
Jan 05 11:45:44 box kernel: R13: ffff909821df6170 R14: ffff90982093d008 R15: 0000000000000000
Jan 05 11:45:44 box kernel: FS:  0000000000000000(0000) GS:ffff90983ec00000(0000) knlGS:0000000000000000
Jan 05 11:45:44 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 05 11:45:44 box kernel: CR2: 00007f0477e9c024 CR3: 000000002800a001 CR4: 00000000003626f0
Jan 05 11:45:44 box kernel: Call Trace:4.14.11
Jan 05 11:45:44 box kernel:  do_nfsd_create+0x30b/0x520 [nfsd]
Jan 05 11:45:44 box kernel:  nfsd3_proc_create+0xef/0x160 [nfsd]
Jan 05 11:45:44 box kernel:  nfsd_dispatch+0xe8/0x220 [nfsd]
Jan 05 11:45:44 box kernel:  svc_process_common+0x48c/0x660 [sunrpc]
Jan 05 11:45:44 box kernel:  ? nfsd_destroy+0x60/0x60 [nfsd]
Jan 05 11:45:44 box kernel:  svc_process+0xe4/0x1c0 [sunrpc]
Jan 05 11:45:44 box kernel:  nfsd+0xed/0x160 [nfsd]
Jan 05 11:45:44 box kernel:  kthread+0x118/0x130
Jan 05 11:45:44 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 05 11:45:44 box kernel:  ret_from_fork+0x1f/0x30
Jan 05 11:45:44 box kernel: Code: e0 8a 6c c0 89 d8 5b c3 80 3d 28 e2 04 00 00 bb 00 00 00 05 75 ee 89 fe 48 c7 c7 79 e5 6c c0 c6 05 11 e2 04 00 01 e8 5f 3c a4 c7 <0f> ff eb d5 31 db eb d1 66 90 66 2e 0f 1f 84 00 00 00 00 00 0f 

Jan 05 11:46:11 box kernel: kernel BUG at fs/btrfs/ctree.c:3188!
Jan 05 11:46:11 box kernel: invalid opcode: 0000 [#1] PREEMPT SMP PTI
Jan 05 11:46:11 box kernel: Modules linked in: macvtap macvlan vhost_net vhost tap ebtable_filter ebtables ip6table_filter ip6_tables devlink tun ccm 8021q mrp bridge stp llc nf_conntrack_ipv4 nf_defrag_ipv4 xt_tc
pudp xt_conntrack nf_conntrack libcrc32c crc32c_generic iptable_filter nls_iso8859_1 nls_cp437 vfat fat sch_fq_codel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 intel_rapl x86_pkg_temp_ther
mal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul iTCO_wdt iTCO_vendor_support iwlmvm ghash_clmulni_intel pcbc mac80211 snd_hda_intel aesni_intel snd_hda_codec led_class aes_x86_64 crypto_s
imd glue_helper cryptd intel_cstate zfs(PO) iwlwifi snd_hda_core zunicode(PO) pcspkr intel_rapl_perf snd_hwdep zavl(PO) e1000e i2c_i801 icp(PO) i915 snd_pcm cfg80211 snd_timer snd soundcore
Jan 05 11:46:11 box kernel:  igb ptp pps_core evdev mousedev dca mac_hid btusb btrtl hci_uart thermal fan wmi btbcm btqca btintel battery i2c_algo_bit bluetooth drm_kms_helper drm video pinctrl_sunrisepoint ecdh_g
eneric pinctrl_intel rfkill crc16 ov5693(C) i2c_hid intel_lpss_acpi intel_lpss v4l2_common intel_gtt videodev agpgart mei_me media tpm_infineon syscopyarea sysfillrect tpm_tis sysimgblt fb_sys_fops acpi_pad button
 tpm_tis_core mei shpchp tpm acpi_als kfifo_buf industrialio nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc zcommon(PO) znvpair(PO) spl(O) sg crypto_user acpi_call(O) ip_tables x_tables btrfs xor zstd_de
compress zstd_compress xxhash raid6_pq hid_generic usbhid hid sd_mod ahci libahci crc32c_intel xhci_pci libata xhci_hcd scsi_mod usbcore usb_common serio vfio_pci irqbypass vfio_virqfd
Jan 05 11:46:11 box kernel:  vfio_iommu_type1 vfio
Jan 05 11:46:11 box kernel: CPU: 1 PID: 27503 Comm: kworker/u8:1 Tainted: P        WC O    4.14.11-1-ARCH #1
Jan 05 11:46:11 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 05 11:46:11 box kernel: Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs]
Jan 05 11:46:11 box kernel: task: ffff9097732b4c40 task.stack: ffffaf67140cc000
Jan 05 11:46:11 box kernel: RIP: 0010:btrfs_set_item_key_safe+0x132/0x190 [btrfs]
Jan 05 11:46:11 box kernel: RSP: 0018:ffffaf67140cfb98 EFLAGS: 00010286
Jan 05 11:46:11 box kernel: RAX: 00000000ffffffff RBX: ffff90982901f230 RCX: 00000000003a8000
Jan 05 11:46:11 box kernel: RDX: 000000000011910f RSI: ffffaf67140cfc9e RDI: ffffaf67140cfbaf
Jan 05 11:46:11 box kernel: RBP: ffff9098215f6000 R08: 0000000000001000 R09: 0000000000004000
Jan 05 11:46:11 box kernel: R10: 0000000000000001 R11: 0000000000001000 R12: 00000000000000a2
Jan 05 11:46:11 box kernel: R13: ffff90982080dd88 R14: ffffaf67140cfc9e R15: ffff90982901f230
Jan 05 11:46:11 box kernel: FS:  0000000000000000(0000) GS:ffff90983ec80000(0000) knlGS:0000000000000000
Jan 05 11:46:11 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 05 11:46:11 box kernel: CR2: 00007f0477e9d024 CR3: 000000002800a002 CR4: 00000000003626e0
Jan 05 11:46:11 box kernel: Call Trace:
Jan 05 11:46:11 box kernel:  __btrfs_drop_extents+0xb2a/0xdd0 [btrfs]
Jan 05 11:46:11 box kernel:  insert_reserved_file_extent.constprop.71+0x94/0x2f0 [btrfs]
Jan 05 11:46:11 box kernel:  btrfs_finish_ordered_io+0x338/0x810 [btrfs]
Jan 05 11:46:11 box kernel:  ? ttwu_do_wakeup+0x19/0x160BUG
Jan 05 11:46:11 box kernel:  btrfs_worker_helper+0x70/0x330 [btrfs]
Jan 05 11:46:11 box kernel:  process_one_work+0x1db/0x410
Jan 05 11:46:11 box kernel:  worker_thread+0x2b/0x3d0
Jan 05 11:46:11 box kernel:  ? process_one_work+0x410/0x410
Jan 05 11:46:11 box kernel:  kthread+0x118/0x130
Jan 05 11:46:11 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 05 11:46:11 box kernel:  ? kthread_create_on_node+0x70/0x70
Jan 05 11:46:11 box kernel:  ret_from_fork+0x1f/0x30
Jan 05 11:46:11 box kernel: Code: 7c 24 17 4c 89 f6 48 89 44 24 20 0f b6 44 24 0e 88 44 24 1f 48 8b 44 24 06 48 89 44 24 17 e8 c6 f3 ff ff 85 c0 0f 8f 31 ff ff ff <0f> 0b 41 8d 44 24 ff 48 8d 74 24 06 b9 11 00 00 
00 4c 89 ef 48 
Jan 05 11:46:11 box kernel: RIP: btrfs_set_item_key_safe+0x132/0x190 [btrfs] RSP: ffffaf67140cfb98

-- Reboot --

Jan 05 12:03:59 box kernel: kernel BUG at fs/btrfs/ctree.c:3188!
Jan 05 12:03:59 box kernel: invalid opcode: 0000 [#1] PREEMPT SMP PTI
Jan 05 12:03:59 box kernel: Modules linked in: nls_iso8859_1 nls_cp437 vfat fat sch_fq_codel snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic arc4 iwlmvm mac80211 iTCO_wdt iTCO_vendor_support intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel led_class snd_hda_intel kvm snd_hda_codec iwlwifi crct10dif_pclmul crc32_pclmul snd_hda_core i915 ghash_clmulni_intel snd_hwdep pcbc snd_pcm e1000e igb aesni_intel aes_x86_64 crypto_simd snd_timer glue_helper cryptd intel_cstate intel_rapl_perf snd pcspkr cfg80211 i2c_i801 ptp soundcore zfs(PO) hci_uart pps_core dca btusb zunicode(PO) btqca btrtl btbcm zavl(PO) i2c_algo_bit evdev btintel icp(PO) drm_kms_helper mousedev mac_hid fan thermal bluetooth drm battery ecdh_generic video rfkill crc16 ov5693(C) pinctrl_sunrisepoint intel_lpss_acpi pinctrl_intel
Jan 05 12:03:59 box kernel:  intel_lpss v4l2_common videodev i2c_hid intel_gtt media agpgart syscopyarea wmi sysfillrect tpm_infineon tpm_tis sysimgblt tpm_tis_core mei_me tpm fb_sys_fops acpi_als mei acpi_pad kfifo_buf button industrialio shpchp nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc zcommon(PO) znvpair(PO) spl(O) sg crypto_user acpi_call(O) ip_tables x_tables btrfs xor zstd_decompress zstd_compress xxhash raid6_pq hid_generic usbhid hid sd_mod ahci libahci xhci_pci libata xhci_hcd crc32c_intel scsi_mod usbcore usb_common serio vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
Jan 05 12:03:59 box kernel: CPU: 3 PID: 399 Comm: mount Tainted: P         C O    4.14.11-1-ARCH #1
Jan 05 12:03:59 box kernel: Hardware name: Gigabyte Technology Co., Ltd. H170N-WIFI/H170N-WIFI-CF, BIOS F22a 07/04/2017
Jan 05 12:03:59 box kernel: task: ffff938b2af78f40 task.stack: ffffafbb81ff4000
Jan 05 12:03:59 box kernel: RIP: 0010:btrfs_set_item_key_safe+0x132/0x190 [btrfs]
Jan 05 12:03:59 box kernel: RSP: 0018:ffffafbb81ff75a0 EFLAGS: 00010286
Jan 05 12:03:59 box kernel: RAX: 00000000ffffffff RBX: ffff938b29ed9540 RCX: 00000000003a8000
Jan 05 12:03:59 box kernel: RDX: 000000000011910f RSI: ffffafbb81ff76a6 RDI: ffffafbb81ff75b7
Jan 05 12:03:59 box kernel: RBP: ffff938b1d728000 R08: 0000000000001000 R09: 0000000000004000
Jan 05 12:03:59 box kernel: R10: 0000000000000003 R11: 0000000000003000 R12: 0000000000000032
Jan 05 12:03:59 box kernel: R13: ffff938b216193b0 R14: ffffafbb81ff76a6 R15: ffff938b29ed9540
Jan 05 12:03:59 box kernel: FS:  00007fb83b038780(0000) GS:ffff938b3ed80000(0000) knlGS:0000000000000000
Jan 05 12:03:59 box kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jan 05 12:03:59 box kernel: CR2: 00007fa64769f160 CR3: 000000042a992004 CR4: 00000000003606e0
Jan 05 12:03:59 box kernel: Call Trace:
Jan 05 12:03:59 box kernel:  __btrfs_drop_extents+0xb2a/0xdd0 [btrfs]
Jan 05 12:03:59 box kernel:  btrfs_drop_extents+0x5a/0x80 [btrfs]
Jan 05 12:03:59 box kernel:  replay_one_extent+0x368/0x750 [btrfs]
Jan 05 12:03:59 box kernel:  replay_one_buffer+0x28d/0x7d0 [btrfs]
Jan 05 12:03:59 box kernel:  ? btrfs_search_slot+0x84c/0x9f0 [btrfs]
Jan 05 12:03:59 box kernel:  ? mark_extent_buffer_accessed+0x54/0x70 [btrfs]
Jan 05 12:03:59 box kernel:  ? find_extent_buffer+0x6d/0x90 [btrfs]
Jan 05 12:03:59 box kernel:  ? btrfs_get_token_64+0x103/0x120 [btrfs]
Jan 05 12:03:59 box kernel:  walk_down_log_tree+0x149/0x300 [btrfs]
Jan 05 12:03:59 box kernel:  walk_log_tree+0xc9/0x1b0 [btrfs]
Jan 05 12:03:59 box kernel:  ? btrfs_read_tree_root+0x9b/0x110 [btrfs]
Jan 05 12:03:59 box kernel:  btrfs_recover_log_trees+0x1d9/0x440 [btrfs]
Jan 05 12:03:59 box kernel:  ? replay_one_extent+0x750/0x750 [btrfs]
Jan 05 12:03:59 box kernel:  open_ctree+0x1fbd/0x2410 [btrfs]
Jan 05 12:03:59 box kernel:  ? btrfs_mount+0xe0e/0xf10 [btrfs]
Jan 05 12:03:59 box kernel:  btrfs_mount+0xe0e/0xf10 [btrfs]
Jan 05 12:03:59 box kernel:  ? pcpu_alloc_area+0xc0/0x130
Jan 05 12:03:59 box kernel:  ? pcpu_next_unpop+0x37/0x50
Jan 05 12:03:59 box kernel:  ? pcpu_alloc+0x2fc/0x670
Jan 05 12:03:59 box kernel:  mount_fs+0x30/0x150
Jan 05 12:03:59 box kernel:  vfs_kern_mount.part.23+0x54/0x100
Jan 05 12:03:59 box kernel:  btrfs_mount+0x188/0xf10 [btrfs]
Jan 05 12:03:59 box kernel:  ? pcpu_alloc_area+0xc0/0x130
Jan 05 12:03:59 box kernel:  ? pcpu_next_unpop+0x37/0x50
Jan 05 12:03:59 box kernel:  ? pcpu_alloc+0x2fc/0x670
Jan 05 12:03:59 box kernel:  mount_fs+0x30/0x150
Jan 05 12:03:59 box kernel:  vfs_kern_mount.part.23+0x54/0x100
Jan 05 12:03:59 box kernel:  do_mount+0x5bf/0xc70
Jan 05 12:03:59 box kernel:  ? _copy_from_user+0x37/0x60
Jan 05 12:03:59 box kernel:  ? kmem_cache_alloc_trace+0x99/0x1b0
Jan 05 12:03:59 box kernel:  SyS_mount+0x80/0xd0