Disconnected nbd client prior to unmounting the fs. got some fallout,
not sure if relevant or not. this is on 4.12.12
[ 5428.076938] block nbd0: NBD_DISCONNECT
[ 5441.025920] ------------[ cut here ]------------
[ 5441.025922] kernel BUG at fs/buffer.c:3099!
[ 5441.025924] invalid opcode: 0000 [#1] PREEMPT SMP
[ 5441.025937] Modules linked in: nbd sha256_ssse3 sha256_generic hmac
drbg ansi_cprng seqiv xfrm4_mode_transport chacha20_x86_64
chacha20_generic poly1305_x86_64 poly1305_generic chacha20poly1305
xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key
xfrm_algo nft_limit nft_reject_inet nf_reject_ipv4 nf_reject_ipv6
nft_reject nf_log_ipv6 nf_log_ipv4 nf_log_common nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack
nft_log nft_counter nft_meta nft_set_bitmap nft_set_hash
nft_set_rbtree nf_tables_netdev nf_tables_inet nf_tables_ipv6
nf_tables_ipv4 cls_u32 sch_htb af_packet x86_pkg_temp_thermal
intel_powerclamp kvm_intel vhost_net tun snd_hda_codec_hdmi vhost tap
kvm snd_hda_codec_realtek input_leds snd_hda_codec_generic bcache
led_class snd_hda_intel snd_hda_codec
[ 5441.026052] intel_cstate intel_uncore snd_hwdep efi_pstore
snd_hda_core mei_me intel_rapl_perf snd_pcm efivars mei tpm_crb
efivarfs algif_skcipher af_alg crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel pcspkr shpchp fan thermal battery acpi_pad tpm_tis
tpm_tis_core tpm vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
[ 5441.026104] CPU: 0 PID: 17032 Comm: umount Not tainted 4.12.12-1-ph #1
[ 5441.026116] Hardware name: Gigabyte Technology Co., Ltd.
Z170X-UD3/Z170X-UD3-CF, BIOS F22 03/06/2017
[ 5441.026132] task: ffff8cb231daa640 task.stack: ffff9daf866f0000
[ 5441.026145] RIP: 0010:submit_bh_wbc.isra.16+0x110/0x120
[ 5441.026155] RSP: 0018:ffff9daf866f3d88 EFLAGS: 00010246
[ 5441.026165] RAX: 0000000004000005 RBX: ffff8cb1fe7e50d0 RCX: dead000000000200
[ 5441.026178] RDX: ffff8cb1fe7e50d0 RSI: 0000000000000800 RDI: 0000000000000001
[ 5441.026194] RBP: ffff8cb259475000 R08: ffff8cb259475088 R09: 0000000000000284
[ 5441.026211] R10: ffffffff98c03e98 R11: 0000000000000182 R12: 0000000000000800
[ 5441.026225] R13: ffff8cb104b02000 R14: ffff8cb2b9b7c340 R15: 0000000000000000
[ 5441.026238] FS: 00007f7c9b68e780(0000) GS:ffff8cb2cec00000(0000)
knlGS:0000000000000000
[ 5441.026252] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5441.026263] CR2: 000055cafe179018 CR3: 000000010059c000 CR4: 00000000003406f0
[ 5441.026276] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5441.026288] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5441.026301] Call Trace:
[ 5441.026310] ? jbd2_write_superblock+0x89/0x130
[ 5441.026320] ? jbd2_mark_journal_empty+0x5a/0x90
[ 5441.026330] ? jbd2_journal_destroy+0x25b/0x290
[ 5441.026340] ? wake_up_bit+0x20/0x20
[ 5441.026349] ? ext4_put_super+0x58/0x360
[ 5441.026358] ? generic_shutdown_super+0x5f/0x110
[ 5441.026369] ? kill_block_super+0x1c/0x50
[ 5441.026378] ? deactivate_locked_super+0x34/0x60
[ 5441.026387] ? cleanup_mnt+0x36/0x70
[ 5441.026396] ? task_work_run+0x6b/0x80
[ 5441.026405] ? exit_to_usermode_loop+0x72/0x80
[ 5441.026414] ? do_syscall_64+0x92/0xa0
[ 5441.026424] ? entry_SYSCALL64_slow_path+0x25/0x25
[ 5441.026433] Code: 80 cc 20 80 e6 80 0f 45 e8 44 09 ed 41 89 6c 24
14 e8 15 cd 17 00 5b 31 c0 5d 41 5c 41 5d c3 f0 80 62 01 f7 e9 4e ff
ff ff 0f 0b <0f> 0b 0f 0b 0f 0b 0f 0b 0f 0b 66 0f 1f 44 00 00 41 57 41
56 49
[ 5441.026475] RIP: submit_bh_wbc.isra.16+0x110/0x120 RSP: ffff9daf866f3d88
[ 5441.030155] ---[ end trace 957fc5174e168e0c ]---
[ 5442.570759] BUG: unable to handle kernel paging request at fffffffef680e030
[ 5442.570778] IP: 0xfffffffef68ea74d
[ 5442.570787] PGD 171c09067
[ 5442.570787] P4D 171c09067
[ 5442.570794] PUD 0
[ 5442.570813] Oops: 0002 [#2] PREEMPT SMP
[ 5442.570822] Modules linked in: nbd sha256_ssse3 sha256_generic hmac
drbg ansi_cprng seqiv xfrm4_mode_transport chacha20_x86_64
chacha20_generic poly1305_x86_64 poly1305_generic chacha20poly1305
xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key
xfrm_algo nft_limit nft_reject_inet nf_reject_ipv4 nf_reject_ipv6
nft_reject nf_log_ipv6 nf_log_ipv4 nf_log_common nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack
nft_log nft_counter nft_meta nft_set_bitmap nft_set_hash
nft_set_rbtree nf_tables_netdev nf_tables_inet nf_tables_ipv6
nf_tables_ipv4 cls_u32 sch_htb af_packet x86_pkg_temp_thermal
intel_powerclamp kvm_intel vhost_net tun snd_hda_codec_hdmi vhost tap
kvm snd_hda_codec_realtek input_leds snd_hda_codec_generic bcache
led_class snd_hda_intel snd_hda_codec
[ 5442.570939] intel_cstate intel_uncore snd_hwdep efi_pstore
snd_hda_core mei_me intel_rapl_perf snd_pcm efivars mei tpm_crb
efivarfs algif_skcipher af_alg crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel pcspkr shpchp fan thermal battery acpi_pad tpm_tis
tpm_tis_core tpm vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
[ 5442.570991] CPU: 0 PID: 11541 Comm: kworker/0:0 Tainted: G D
4.12.12-1-ph #1
[ 5442.571005] Hardware name: Gigabyte Technology Co., Ltd.
Z170X-UD3/Z170X-UD3-CF, BIOS F22 03/06/2017
[ 5442.571024] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5442.571036] task: ffff8cb2b63b9980 task.stack: ffff9daf85dd4000
[ 5442.571054] RIP: 0010:0xfffffffef68ea74d
[ 5442.571063] RSP: 0018:ffff9daf85dd7c10 EFLAGS: 00010202
[ 5442.571081] RAX: 0000000000000020 RBX: fffffffef680e018 RCX: c000000000000001
[ 5442.571096] RDX: 000000000007ffa8 RSI: ffff9daf85dd7dc8 RDI: ffff8cb23d0a7400
[ 5442.571109] RBP: 0000000000000400 R08: 0000000000000020 R09: 0000000000000000
[ 5442.571122] R10: ffff9daf85dd7dff R11: 0000000000000000 R12: ffff9daf85dd7dd0
[ 5442.572110] R13: ffff8cb23d0a7400 R14: ffff9daf85dd7dd0 R15: 0000000000000202
[ 5442.573084] FS: 0000000000000000(0000) GS:ffff8cb2cec00000(0000)
knlGS:0000000000000000
[ 5442.574053] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5442.574997] CR2: fffffffef68ea74d CR3: 0000000171c08000 CR4: 00000000003406f0
[ 5442.575938] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5442.576868] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5442.577785] Call Trace:
[ 5442.578690] ? efi_call+0x58/0x90
[ 5442.579571] ? virt_efi_get_next_variable+0xd7/0x210
[ 5442.580425] ? efivar_init+0x112/0x390
[ 5442.581258] ? efivar_init+0x112/0x390
[ 5442.582061] ? efivar_release+0x10/0x10 [efivars]
[ 5442.582839] ? up+0xd/0x50
[ 5442.583620] ? efivar_entry_add+0x49/0x80
[ 5442.584389] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5442.585155] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5442.585913] ? process_one_work+0x153/0x2e0
[ 5442.586670] ? worker_thread+0x45/0x380
[ 5442.587427] ? __schedule+0x18b/0x5c0
[ 5442.588182] ? process_one_work+0x2e0/0x2e0
[ 5442.588923] ? kthread+0x10e/0x130
[ 5442.589672] ? kthread_create_on_node+0x60/0x60
[ 5442.590409] ? ret_from_fork+0x22/0x30
[ 5442.591152] Code: Bad RIP value.
[ 5442.591880] RIP: 0xfffffffef68ea74d RSP: ffff9daf85dd7c10
[ 5442.592620] CR2: fffffffef680e030
[ 5442.593346] ---[ end trace 957fc5174e168e0d ]---
[ 5442.593916] BUG: scheduling while atomic: kworker/0:0/11541/0x00000003
[ 5442.593916] Modules linked in: nbd sha256_ssse3 sha256_generic hmac
drbg ansi_cprng seqiv xfrm4_mode_transport chacha20_x86_64
chacha20_generic poly1305_x86_64 poly1305_generic chacha20poly1305
xfrm_user xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key
xfrm_algo nft_limit nft_reject_inet nf_reject_ipv4 nf_reject_ipv6
nft_reject nf_log_ipv6 nf_log_ipv4 nf_log_common nf_conntrack_ipv6
nf_defrag_ipv6 nf_conntrack_ipv4 nf_defrag_ipv4 nft_ct nf_conntrack
nft_log nft_counter nft_meta nft_set_bitmap nft_set_hash
nft_set_rbtree nf_tables_netdev nf_tables_inet nf_tables_ipv6
nf_tables_ipv4 cls_u32 sch_htb af_packet x86_pkg_temp_thermal
intel_powerclamp kvm_intel vhost_net tun snd_hda_codec_hdmi vhost tap
kvm snd_hda_codec_realtek input_leds snd_hda_codec_generic bcache
led_class snd_hda_intel snd_hda_codec
[ 5442.593932] intel_cstate intel_uncore snd_hwdep efi_pstore
snd_hda_core mei_me intel_rapl_perf snd_pcm efivars mei tpm_crb
efivarfs algif_skcipher af_alg crct10dif_pclmul crc32_pclmul
ghash_clmulni_intel pcspkr shpchp fan thermal battery acpi_pad tpm_tis
tpm_tis_core tpm vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio
[ 5442.593941] CPU: 0 PID: 11541 Comm: kworker/0:0 Tainted: G D
4.12.12-1-ph #1
[ 5442.593942] Hardware name: Gigabyte Technology Co., Ltd.
Z170X-UD3/Z170X-UD3-CF, BIOS F22 03/06/2017
[ 5442.593944] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5442.593944] Call Trace:
[ 5442.593946] ? dump_stack+0x46/0x64
[ 5442.593947] ? __schedule_bug+0x47/0x60
[ 5442.593949] ? __schedule+0x4b2/0x5c0
[ 5442.593950] ? schedule+0x34/0x80
[ 5442.593952] ? schedule_timeout+0x203/0x2c0
[ 5442.593953] ? __down_interruptible+0x9e/0x110
[ 5442.593954] ? soft_cursor+0x150/0x220
[ 5442.593955] ? __down_interruptible+0x9e/0x110
[ 5442.593956] ? down_interruptible+0x3d/0x50
[ 5442.593957] ? down_interruptible+0x3d/0x50
[ 5442.593958] ? efivar_entry_set_safe+0x12c/0x1d0
[ 5442.593959] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5442.593960] ? efi_pstore_write+0x83/0x120 [efi_pstore]
[ 5442.593961] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5442.593962] ? pstore_dump+0x160/0x310
[ 5442.593963] ? vprintk_emit+0x255/0x2b0
[ 5442.593965] ? kmsg_dump+0x96/0xc0
[ 5442.593966] ? oops_end+0x5b/0xb0
[ 5442.593967] ? no_context+0x150/0x3c0
[ 5442.593968] ? page_fault+0x22/0x30
[ 5442.593969] ? efi_call+0x58/0x90
[ 5442.593971] ? virt_efi_get_next_variable+0xd7/0x210
[ 5442.593972] ? efivar_init+0x112/0x390
[ 5442.593973] ? efivar_init+0x112/0x390
[ 5442.593974] ? efivar_release+0x10/0x10 [efivars]
[ 5442.593974] ? up+0xd/0x50
[ 5442.593975] ? efivar_entry_add+0x49/0x80
[ 5442.593976] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5442.593977] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5442.593978] ? process_one_work+0x153/0x2e0
[ 5442.593979] ? worker_thread+0x45/0x380
[ 5442.593980] ? __schedule+0x18b/0x5c0
[ 5442.593981] ? process_one_work+0x2e0/0x2e0
[ 5442.593982] ? kthread+0x10e/0x130
[ 5442.593983] ? kthread_create_on_node+0x60/0x60
[ 5442.593984] ? ret_from_fork+0x22/0x30
[ 5502.571791] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 5502.571802] Tasks blocked on level-0 rcu_node (CPUs 0-3): P11541
[ 5502.571807] (detected by 2, t=60002 jiffies, g=134953, c=134952, q=16723)
[ 5502.571815] kworker/0:0 S 0 11541 2 0x00000080
[ 5502.571831] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5502.571835] Call Trace:
[ 5502.571846] ? __schedule+0x183/0x5c0
[ 5502.571851] ? schedule+0x34/0x80
[ 5502.571857] ? schedule_timeout+0x203/0x2c0
[ 5502.571864] ? __down_interruptible+0x9e/0x110
[ 5502.571873] ? soft_cursor+0x150/0x220
[ 5502.571878] ? __down_interruptible+0x9e/0x110
[ 5502.571884] ? down_interruptible+0x3d/0x50
[ 5502.571887] ? down_interruptible+0x3d/0x50
[ 5502.571894] ? efivar_entry_set_safe+0x12c/0x1d0
[ 5502.571901] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5502.571906] ? efi_pstore_write+0x83/0x120 [efi_pstore]
[ 5502.571910] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5502.571916] ? pstore_dump+0x160/0x310
[ 5502.571922] ? vprintk_emit+0x255/0x2b0
[ 5502.571929] ? kmsg_dump+0x96/0xc0
[ 5502.571936] ? oops_end+0x5b/0xb0
[ 5502.571941] ? no_context+0x150/0x3c0
[ 5502.571946] ? page_fault+0x22/0x30
[ 5502.571953] ? efi_call+0x58/0x90
[ 5502.571962] ? virt_efi_get_next_variable+0xd7/0x210
[ 5502.571968] ? efivar_init+0x112/0x390
[ 5502.571973] ? efivar_init+0x112/0x390
[ 5502.571978] ? efivar_release+0x10/0x10 [efivars]
[ 5502.571982] ? up+0xd/0x50
[ 5502.571987] ? efivar_entry_add+0x49/0x80
[ 5502.571993] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5502.571997] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5502.572004] ? process_one_work+0x153/0x2e0
[ 5502.572010] ? worker_thread+0x45/0x380
[ 5502.572015] ? __schedule+0x18b/0x5c0
[ 5502.572020] ? process_one_work+0x2e0/0x2e0
[ 5502.572025] ? kthread+0x10e/0x130
[ 5502.572029] ? kthread_create_on_node+0x60/0x60
[ 5502.572033] ? ret_from_fork+0x22/0x30
[ 5502.572037] kworker/0:0 S 0 11541 2 0x00000080
[ 5502.572045] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5502.572048] Call Trace:
[ 5502.572054] ? __schedule+0x183/0x5c0
[ 5502.572059] ? schedule+0x34/0x80
[ 5502.572064] ? schedule_timeout+0x203/0x2c0
[ 5502.572071] ? __down_interruptible+0x9e/0x110
[ 5502.572074] ? soft_cursor+0x150/0x220
[ 5502.572080] ? __down_interruptible+0x9e/0x110
[ 5502.572084] ? down_interruptible+0x3d/0x50
[ 5502.572087] ? down_interruptible+0x3d/0x50
[ 5502.572093] ? efivar_entry_set_safe+0x12c/0x1d0
[ 5502.572098] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5502.572103] ? efi_pstore_write+0x83/0x120 [efi_pstore]
[ 5502.572107] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5502.572112] ? pstore_dump+0x160/0x310
[ 5502.572118] ? vprintk_emit+0x255/0x2b0
[ 5502.572124] ? kmsg_dump+0x96/0xc0
[ 5502.572129] ? oops_end+0x5b/0xb0
[ 5502.572133] ? no_context+0x150/0x3c0
[ 5502.572138] ? page_fault+0x22/0x30
[ 5502.572144] ? efi_call+0x58/0x90
[ 5502.572151] ? virt_efi_get_next_variable+0xd7/0x210
[ 5502.572157] ? efivar_init+0x112/0x390
[ 5502.572162] ? efivar_init+0x112/0x390
[ 5502.572167] ? efivar_release+0x10/0x10 [efivars]
[ 5502.572171] ? up+0xd/0x50
[ 5502.572176] ? efivar_entry_add+0x49/0x80
[ 5502.572181] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5502.572186] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5502.572191] ? process_one_work+0x153/0x2e0
[ 5502.572197] ? worker_thread+0x45/0x380
[ 5502.572201] ? __schedule+0x18b/0x5c0
[ 5502.572207] ? process_one_work+0x2e0/0x2e0
[ 5502.572211] ? kthread+0x10e/0x130
[ 5502.572215] ? kthread_create_on_node+0x60/0x60
[ 5502.572219] ? ret_from_fork+0x22/0x30
[ 5682.575898] INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 5682.575906] Tasks blocked on level-0 rcu_node (CPUs 0-3): P11541
[ 5682.575910] (detected by 1, t=240007 jiffies, g=134953, c=134952, q=23042)
[ 5682.575916] kworker/0:0 S 0 11541 2 0x00000080
[ 5682.575929] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5682.575932] Call Trace:
[ 5682.575941] ? __schedule+0x183/0x5c0
[ 5682.575945] ? schedule+0x34/0x80
[ 5682.575950] ? schedule_timeout+0x203/0x2c0
[ 5682.575956] ? __down_interruptible+0x9e/0x110
[ 5682.575960] ? soft_cursor+0x150/0x220
[ 5682.575964] ? __down_interruptible+0x9e/0x110
[ 5682.575969] ? down_interruptible+0x3d/0x50
[ 5682.575971] ? down_interruptible+0x3d/0x50
[ 5682.575977] ? efivar_entry_set_safe+0x12c/0x1d0
[ 5682.575983] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5682.575987] ? efi_pstore_write+0x83/0x120 [efi_pstore]
[ 5682.575990] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5682.575995] ? pstore_dump+0x160/0x310
[ 5682.576000] ? vprintk_emit+0x255/0x2b0
[ 5682.576005] ? kmsg_dump+0x96/0xc0
[ 5682.576010] ? oops_end+0x5b/0xb0
[ 5682.576015] ? no_context+0x150/0x3c0
[ 5682.576019] ? page_fault+0x22/0x30
[ 5682.576025] ? efi_call+0x58/0x90
[ 5682.576031] ? virt_efi_get_next_variable+0xd7/0x210
[ 5682.576036] ? efivar_init+0x112/0x390
[ 5682.576040] ? efivar_init+0x112/0x390
[ 5682.576044] ? efivar_release+0x10/0x10 [efivars]
[ 5682.576047] ? up+0xd/0x50
[ 5682.576051] ? efivar_entry_add+0x49/0x80
[ 5682.576056] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5682.576060] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5682.576065] ? process_one_work+0x153/0x2e0
[ 5682.576070] ? worker_thread+0x45/0x380
[ 5682.576074] ? __schedule+0x18b/0x5c0
[ 5682.576078] ? process_one_work+0x2e0/0x2e0
[ 5682.576081] ? kthread+0x10e/0x130
[ 5682.576085] ? kthread_create_on_node+0x60/0x60
[ 5682.576088] ? ret_from_fork+0x22/0x30
[ 5682.576091] kworker/0:0 S 0 11541 2 0x00000080
[ 5682.576098] Workqueue: events efivar_update_sysfs_entries [efivars]
[ 5682.576100] Call Trace:
[ 5682.576105] ? __schedule+0x183/0x5c0
[ 5682.576109] ? schedule+0x34/0x80
[ 5682.576113] ? schedule_timeout+0x203/0x2c0
[ 5682.576118] ? __down_interruptible+0x9e/0x110
[ 5682.576121] ? soft_cursor+0x150/0x220
[ 5682.576125] ? __down_interruptible+0x9e/0x110
[ 5682.576128] ? down_interruptible+0x3d/0x50
[ 5682.576131] ? down_interruptible+0x3d/0x50
[ 5682.576136] ? efivar_entry_set_safe+0x12c/0x1d0
[ 5682.576140] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5682.576143] ? efi_pstore_write+0x83/0x120 [efi_pstore]
[ 5682.576147] ? efi_pstore_write+0xe3/0x120 [efi_pstore]
[ 5682.576151] ? pstore_dump+0x160/0x310
[ 5682.576155] ? vprintk_emit+0x255/0x2b0
[ 5682.576161] ? kmsg_dump+0x96/0xc0
[ 5682.576165] ? oops_end+0x5b/0xb0
[ 5682.576168] ? no_context+0x150/0x3c0
[ 5682.576172] ? page_fault+0x22/0x30
[ 5682.576177] ? efi_call+0x58/0x90
[ 5682.576183] ? virt_efi_get_next_variable+0xd7/0x210
[ 5682.576187] ? efivar_init+0x112/0x390
[ 5682.576191] ? efivar_init+0x112/0x390
[ 5682.576195] ? efivar_release+0x10/0x10 [efivars]
[ 5682.576198] ? up+0xd/0x50
[ 5682.576202] ? efivar_entry_add+0x49/0x80
[ 5682.576206] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5682.576210] ? efivar_update_sysfs_entries+0x1f/0x50 [efivars]
[ 5682.576214] ? process_one_work+0x153/0x2e0
[ 5682.576219] ? worker_thread+0x45/0x380
[ 5682.576222] ? __schedule+0x18b/0x5c0
[ 5682.576227] ? process_one_work+0x2e0/0x2e0
[ 5682.576230] ? kthread+0x10e/0x130
[ 5682.576233] ? kthread_create_on_node+0x60/0x60
[ 5682.576236] ? ret_from_fork+0x22/0x30