This has started happening for me since upgrading linux-image-generic-hwe-22.04 from 6.2.0.31.31~22.04.8 to 6.2.0.32.32~22.04.9. It is still happening currently with 6.2.0.36.37~22.04.14.

I get this issue typically when (auto-) mounting or unmounting a CIFS share that has VFS, resulting in a NULL pointer dereference in the kernel and a soft lockup in the CPU. A recent example:

Oct 31 14:46:04 lipc-carsus kernel: ------------[ cut here ]------------
Oct 31 14:46:04 lipc-carsus kernel: WARNING: CPU: 4 PID: 29475 at fs/cifs/connect.c:1979 __cifs_put_smb_ses+0x3dd/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel: Modules linked in: nls_utf8 cifs cifs_arc4 cifs_md4 fscache netfs authenc echainiv esp4 ccm rfcomm nft_masq xfrm_user xfrm_algo nft_chain_nat nf_nat bridge stp llc vhost_vsock vmw_vsock_virtio_transp>
Oct 31 14:46:04 lipc-carsus kernel:  soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core snd_ctl_led snd_soc_acpi_intel_match snd_soc_a>
Oct 31 14:46:04 lipc-carsus kernel:  hid_multitouch mei intel_rapl_common intel_soc_dts_iosf intel_pch_thermal int3403_thermal int340x_thermal_zone int3400_thermal dell_smo8800 intel_hid acpi_thermal_rel mac_hid acpi_pad sparse_keymap >
Oct 31 14:46:04 lipc-carsus kernel: CPU: 4 PID: 29475 Comm: umount Tainted: P           OE      6.2.0-35-generic #35~22.04.1-Ubuntu
Oct 31 14:46:04 lipc-carsus kernel: Hardware name: Dell Inc. Latitude 5591/0DVVG1, BIOS 1.28.0 07/04/2023
Oct 31 14:46:04 lipc-carsus kernel: RIP: 0010:__cifs_put_smb_ses+0x3dd/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel: Code: e8 48 c7 c1 70 82 d5 c1 48 c7 c2 30 34 d8 c1 41 89 c1 48 c7 c6 68 cf d6 c1 48 c7 c7 d0 97 dc c1 e8 a8 65 98 c8 e9 21 ff ff ff <0f> 0b e9 a6 fc ff ff 49 8d 5e 20 48 89 df e8 00 f7 1c c9 48 c7 c6
Oct 31 14:46:04 lipc-carsus kernel: RSP: 0018:ffffa923d8067d20 EFLAGS: 00010286
Oct 31 14:46:04 lipc-carsus kernel: RAX: 00000000ffffffff RBX: ffff8a8d13f0eee8 RCX: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: RBP: ffffa923d8067d50 R08: 0000000000000000 R09: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a8ddf627000
Oct 31 14:46:04 lipc-carsus kernel: R13: ffff8a8ddf627038 R14: 0000000000000000 R15: ffff8a8ddf627000
Oct 31 14:46:04 lipc-carsus kernel: FS:  00007f7c7b2ac800(0000) GS:ffff8a906c300000(0000) knlGS:0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 31 14:46:04 lipc-carsus kernel: CR2: 000055b1b50e4400 CR3: 000000039631e002 CR4: 00000000003706e0
Oct 31 14:46:04 lipc-carsus kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Oct 31 14:46:04 lipc-carsus kernel: Call Trace:
Oct 31 14:46:04 lipc-carsus kernel:  <TASK>
Oct 31 14:46:04 lipc-carsus kernel:  ? show_regs+0x72/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? __cifs_put_smb_ses+0x3dd/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  ? __warn+0x8d/0x160
Oct 31 14:46:04 lipc-carsus kernel:  ? __cifs_put_smb_ses+0x3dd/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  ? report_bug+0x1bb/0x1d0
Oct 31 14:46:04 lipc-carsus kernel:  ? handle_bug+0x46/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? exc_invalid_op+0x19/0x80
Oct 31 14:46:04 lipc-carsus kernel:  ? asm_exc_invalid_op+0x1b/0x20
Oct 31 14:46:04 lipc-carsus kernel:  ? __cifs_put_smb_ses+0x3dd/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  tconInfoFree+0x9b/0x110 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_put_tcon.part.0+0x109/0x2d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_put_tlink+0x4a/0x90 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_umount+0x59/0xb0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_kill_sb+0x50/0x60 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  deactivate_locked_super+0x32/0xb0
Oct 31 14:46:04 lipc-carsus kernel:  deactivate_super+0x4a/0x60
Oct 31 14:46:04 lipc-carsus kernel:  cleanup_mnt+0x105/0x170
Oct 31 14:46:04 lipc-carsus kernel:  __cleanup_mnt+0x12/0x20
Oct 31 14:46:04 lipc-carsus kernel:  task_work_run+0x5e/0xa0
Oct 31 14:46:04 lipc-carsus kernel:  exit_to_user_mode_loop+0x111/0x140
Oct 31 14:46:04 lipc-carsus kernel:  exit_to_user_mode_prepare+0xb9/0xd0
Oct 31 14:46:04 lipc-carsus kernel:  syscall_exit_to_user_mode+0x2a/0x60
Oct 31 14:46:04 lipc-carsus kernel:  do_syscall_64+0x69/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? do_syscall_64+0x69/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? exc_page_fault+0x92/0x1b0
Oct 31 14:46:04 lipc-carsus kernel:  entry_SYSCALL_64_after_hwframe+0x73/0xdd
Oct 31 14:46:04 lipc-carsus kernel: RIP: 0033:0x7f7c7b125c2b
Oct 31 14:46:04 lipc-carsus kernel: Code: 0b 32 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 d1 31 0f 00 f7 d8
Oct 31 14:46:04 lipc-carsus kernel: RSP: 002b:00007fff79420cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
Oct 31 14:46:04 lipc-carsus kernel: RAX: 0000000000000000 RBX: 000055fcd29f11a0 RCX: 00007f7c7b125c2b
Oct 31 14:46:04 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055fcd29f0cd0
Oct 31 14:46:04 lipc-carsus kernel: RBP: 000055fcd29f0aa0 R08: 0000000000000000 R09: 000055fcd29f1fa0
Oct 31 14:46:04 lipc-carsus kernel: R10: 000055fcd29f2e50 R11: 0000000000000246 R12: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: R13: 000055fcd29f0cd0 R14: 000055fcd29f0bb0 R15: 000055fcd29f0aa0
Oct 31 14:46:04 lipc-carsus kernel:  </TASK>
Oct 31 14:46:04 lipc-carsus kernel: ---[ end trace 0000000000000000 ]---
Oct 31 14:46:04 lipc-carsus kernel: BUG: kernel NULL pointer dereference, address: 0000000000000008
Oct 31 14:46:04 lipc-carsus kernel: #PF: supervisor write access in kernel mode
Oct 31 14:46:04 lipc-carsus kernel: #PF: error_code(0x0002) - not-present page
Oct 31 14:46:04 lipc-carsus kernel: PGD 0 P4D 0
Oct 31 14:46:04 lipc-carsus kernel: Oops: 0002 [#1] PREEMPT SMP PTI
Oct 31 14:46:04 lipc-carsus kernel: CPU: 4 PID: 29475 Comm: umount Tainted: P        W  OE      6.2.0-35-generic #35~22.04.1-Ubuntu
Oct 31 14:46:04 lipc-carsus kernel: Hardware name: Dell Inc. Latitude 5591/0DVVG1, BIOS 1.28.0 07/04/2023
Oct 31 14:46:04 lipc-carsus kernel: RIP: 0010:__cifs_put_smb_ses+0xe0/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel: Code: f8 02 0f 84 1b 02 00 00 48 c7 c7 88 5f dd c1 41 bf 01 00 00 00 e8 20 fa 1c c9 49 8b 14 24 49 8b 44 24 08 48 c7 c7 88 5f dd c1 <48> 89 42 08 48 89 10 4d 89 24 24 4d 89 64 24 08 e8 3b fb 1c c9 49
Oct 31 14:46:04 lipc-carsus kernel: RSP: 0018:ffffa923d8067d20 EFLAGS: 00010246
Oct 31 14:46:04 lipc-carsus kernel: RAX: 0000000000000000 RBX: ffff8a8d13f0eee8 RCX: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffc1dd5f88
Oct 31 14:46:04 lipc-carsus kernel: RBP: ffffa923d8067d50 R08: 0000000000000000 R09: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a8ddf627000
Oct 31 14:46:04 lipc-carsus kernel: R13: ffff8a8ddf627038 R14: 0000000000000000 R15: 0000000000000001
Oct 31 14:46:04 lipc-carsus kernel: FS:  00007f7c7b2ac800(0000) GS:ffff8a906c300000(0000) knlGS:0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 31 14:46:04 lipc-carsus kernel: CR2: 0000000000000008 CR3: 000000039631e002 CR4: 00000000003706e0
Oct 31 14:46:04 lipc-carsus kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Oct 31 14:46:04 lipc-carsus kernel: Call Trace:
Oct 31 14:46:04 lipc-carsus kernel:  <TASK>
Oct 31 14:46:04 lipc-carsus kernel:  ? show_regs+0x72/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? __die+0x25/0x80
Oct 31 14:46:04 lipc-carsus kernel:  ? page_fault_oops+0x79/0x190
Oct 31 14:46:04 lipc-carsus kernel:  ? do_user_addr_fault+0x30c/0x640
Oct 31 14:46:04 lipc-carsus kernel:  ? report_bug+0x1bb/0x1d0
Oct 31 14:46:04 lipc-carsus kernel:  ? exc_page_fault+0x81/0x1b0
Oct 31 14:46:04 lipc-carsus kernel:  ? asm_exc_page_fault+0x27/0x30
Oct 31 14:46:04 lipc-carsus kernel:  ? __cifs_put_smb_ses+0xe0/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  tconInfoFree+0x9b/0x110 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_put_tcon.part.0+0x109/0x2d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_put_tlink+0x4a/0x90 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_umount+0x59/0xb0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  cifs_kill_sb+0x50/0x60 [cifs]
Oct 31 14:46:04 lipc-carsus kernel:  deactivate_locked_super+0x32/0xb0
Oct 31 14:46:04 lipc-carsus kernel:  deactivate_super+0x4a/0x60
Oct 31 14:46:04 lipc-carsus kernel:  cleanup_mnt+0x105/0x170
Oct 31 14:46:04 lipc-carsus kernel:  __cleanup_mnt+0x12/0x20
Oct 31 14:46:04 lipc-carsus kernel:  task_work_run+0x5e/0xa0
Oct 31 14:46:04 lipc-carsus kernel:  exit_to_user_mode_loop+0x111/0x140
Oct 31 14:46:04 lipc-carsus kernel:  exit_to_user_mode_prepare+0xb9/0xd0
Oct 31 14:46:04 lipc-carsus kernel:  syscall_exit_to_user_mode+0x2a/0x60
Oct 31 14:46:04 lipc-carsus kernel:  do_syscall_64+0x69/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? do_syscall_64+0x69/0x90
Oct 31 14:46:04 lipc-carsus kernel:  ? exc_page_fault+0x92/0x1b0
Oct 31 14:46:04 lipc-carsus kernel:  entry_SYSCALL_64_after_hwframe+0x73/0xdd
Oct 31 14:46:04 lipc-carsus kernel: RIP: 0033:0x7f7c7b125c2b
Oct 31 14:46:04 lipc-carsus kernel: Code: 0b 32 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 d1 31 0f 00 f7 d8
Oct 31 14:46:04 lipc-carsus kernel: RSP: 002b:00007fff79420cd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
Oct 31 14:46:04 lipc-carsus kernel: RAX: 0000000000000000 RBX: 000055fcd29f11a0 RCX: 00007f7c7b125c2b
Oct 31 14:46:04 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000055fcd29f0cd0
Oct 31 14:46:04 lipc-carsus kernel: RBP: 000055fcd29f0aa0 R08: 0000000000000000 R09: 000055fcd29f1fa0
Oct 31 14:46:04 lipc-carsus kernel: R10: 000055fcd29f2e50 R11: 0000000000000246 R12: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: R13: 000055fcd29f0cd0 R14: 000055fcd29f0bb0 R15: 000055fcd29f0aa0
Oct 31 14:46:04 lipc-carsus kernel:  </TASK>
Oct 31 14:46:04 lipc-carsus kernel: Modules linked in: nls_utf8 cifs cifs_arc4 cifs_md4 fscache netfs authenc echainiv esp4 ccm rfcomm nft_masq xfrm_user xfrm_algo nft_chain_nat nf_nat bridge stp llc vhost_vsock vmw_vsock_virtio_transp>
Oct 31 14:46:04 lipc-carsus kernel:  soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core snd_ctl_led snd_soc_acpi_intel_match snd_soc_a>
Oct 31 14:46:04 lipc-carsus kernel:  hid_multitouch mei intel_rapl_common intel_soc_dts_iosf intel_pch_thermal int3403_thermal int340x_thermal_zone int3400_thermal dell_smo8800 intel_hid acpi_thermal_rel mac_hid acpi_pad sparse_keymap >
Oct 31 14:46:04 lipc-carsus kernel: CR2: 0000000000000008
Oct 31 14:46:04 lipc-carsus kernel: ---[ end trace 0000000000000000 ]---
Oct 31 14:46:04 lipc-carsus kernel: RIP: 0010:__cifs_put_smb_ses+0xe0/0x4d0 [cifs]
Oct 31 14:46:04 lipc-carsus kernel: Code: f8 02 0f 84 1b 02 00 00 48 c7 c7 88 5f dd c1 41 bf 01 00 00 00 e8 20 fa 1c c9 49 8b 14 24 49 8b 44 24 08 48 c7 c7 88 5f dd c1 <48> 89 42 08 48 89 10 4d 89 24 24 4d 89 64 24 08 e8 3b fb 1c c9 49
Oct 31 14:46:04 lipc-carsus kernel: RSP: 0018:ffffa923d8067d20 EFLAGS: 00010246
Oct 31 14:46:04 lipc-carsus kernel: RAX: 0000000000000000 RBX: ffff8a8d13f0eee8 RCX: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffc1dd5f88
Oct 31 14:46:04 lipc-carsus kernel: RBP: ffffa923d8067d50 R08: 0000000000000000 R09: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8a8ddf627000
Oct 31 14:46:04 lipc-carsus kernel: R13: ffff8a8ddf627038 R14: 0000000000000000 R15: 0000000000000001
Oct 31 14:46:04 lipc-carsus kernel: FS:  00007f7c7b2ac800(0000) GS:ffff8a906c300000(0000) knlGS:0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 31 14:46:04 lipc-carsus kernel: CR2: 0000000000000008 CR3: 000000039631e002 CR4: 00000000003706e0
Oct 31 14:46:04 lipc-carsus kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 31 14:46:04 lipc-carsus kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Oct 31 14:46:04 lipc-carsus kernel: note: umount[29475] exited with irqs disabled
Oct 31 14:46:04 lipc-carsus kernel: note: umount[29475] exited with preempt_count 1
Oct 31 14:46:04 lipc-carsus systemd[1]: mnt-networkdrive-Web-Folder2.mount: Mount process exited, code=killed, status=9/KILL
Oct 31 14:46:04 lipc-carsus systemd[1]: mnt-networkdrive-Web-Folder2.mount: Failed with result 'signal'.
Oct 31 14:46:04 lipc-carsus systemd[1]: Unmounted /mnt/networkdrive/Web/Folder2.
Oct 31 14:46:20 lipc-carsus kernel: [UFW BLOCK] IN=wlo1 OUT= MAC= SRC=fe80:0000:0000:0000:2f9c:b9d8:2c7b:a2b2 DST=ff12:0000:0000:0000:0000:0000:0000:8384 LEN=316 TC=0 HOPLIMIT=1 FLOWLBL=426256 PROTO=UDP SPT=46719 DPT=21027 LEN=276
Oct 31 14:46:31 lipc-carsus kernel: watchdog: BUG: soft lockup - CPU#11 stuck for 26s! [umount:29474]
Oct 31 14:46:31 lipc-carsus kernel: Modules linked in: nls_utf8 cifs cifs_arc4 cifs_md4 fscache netfs authenc echainiv esp4 ccm rfcomm nft_masq xfrm_user xfrm_algo nft_chain_nat nf_nat bridge stp llc vhost_vsock vmw_vsock_virtio_transp>
Oct 31 14:46:31 lipc-carsus kernel:  soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils snd_soc_hdac_hda snd_hda_ext_core snd_ctl_led snd_soc_acpi_intel_match snd_soc_a>
Oct 31 14:46:31 lipc-carsus kernel:  hid_multitouch mei intel_rapl_common intel_soc_dts_iosf intel_pch_thermal int3403_thermal int340x_thermal_zone int3400_thermal dell_smo8800 intel_hid acpi_thermal_rel mac_hid acpi_pad sparse_keymap >
Oct 31 14:46:31 lipc-carsus kernel: CPU: 11 PID: 29474 Comm: umount Tainted: P      D W  OE      6.2.0-35-generic #35~22.04.1-Ubuntu
Oct 31 14:46:31 lipc-carsus kernel: Hardware name: Dell Inc. Latitude 5591/0DVVG1, BIOS 1.28.0 07/04/2023
Oct 31 14:46:31 lipc-carsus kernel: RIP: 0010:native_queued_spin_lock_slowpath+0x8f/0x330
Oct 31 14:46:31 lipc-carsus kernel: Code: 0f 92 c2 41 8b 04 24 0f b6 d2 c1 e2 08 30 e4 09 d0 a9 00 01 ff ff 0f 85 10 02 00 00 85 c0 74 12 41 8b 04 24 84 c0 74 0a f3 90 <41> 8b 04 24 84 c0 75 f6 b8 01 00 00 00 66 41 89 04 24 5b 41 5c 41
Oct 31 14:46:31 lipc-carsus kernel: RSP: 0000:ffffa923d8047cc8 EFLAGS: 00000202
Oct 31 14:46:31 lipc-carsus kernel: RAX: 0000000000000101 RBX: ffff8a8d0ed99e40 RCX: 0000000000000000
Oct 31 14:46:31 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffc1dd5f88
Oct 31 14:46:31 lipc-carsus kernel: RBP: ffffa923d8047cf0 R08: 0000000000000000 R09: 0000000000000000
Oct 31 14:46:31 lipc-carsus kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffc1dd5f88
Oct 31 14:46:31 lipc-carsus kernel: R13: 000000000000004f R14: ffff8a8d20b5e800 R15: 0000000000000001
Oct 31 14:46:31 lipc-carsus kernel: FS:  00007ff3ab6d4800(0000) GS:ffff8a906c4c0000(0000) knlGS:0000000000000000
Oct 31 14:46:31 lipc-carsus kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Oct 31 14:46:31 lipc-carsus kernel: CR2: 000055de1d211160 CR3: 000000030ea60004 CR4: 00000000003706e0
Oct 31 14:46:31 lipc-carsus kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Oct 31 14:46:31 lipc-carsus kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Oct 31 14:46:31 lipc-carsus kernel: Call Trace:
Oct 31 14:46:31 lipc-carsus kernel:  <IRQ>
Oct 31 14:46:31 lipc-carsus kernel:  ? show_regs+0x72/0x90
Oct 31 14:46:31 lipc-carsus kernel:  ? watchdog_timer_fn+0x1e7/0x250
Oct 31 14:46:31 lipc-carsus kernel:  ? __pfx_watchdog_timer_fn+0x10/0x10
Oct 31 14:46:31 lipc-carsus kernel:  ? __hrtimer_run_queues+0x104/0x280
Oct 31 14:46:31 lipc-carsus kernel:  ? clockevents_program_event+0xb2/0x140
Oct 31 14:46:31 lipc-carsus kernel:  ? hrtimer_interrupt+0x101/0x250
Oct 31 14:46:31 lipc-carsus kernel:  ? __sysvec_apic_timer_interrupt+0x61/0x140
Oct 31 14:46:31 lipc-carsus kernel:  ? sysvec_apic_timer_interrupt+0x91/0xb0
Oct 31 14:46:31 lipc-carsus kernel:  </IRQ>
Oct 31 14:46:31 lipc-carsus kernel:  <TASK>
Oct 31 14:46:31 lipc-carsus kernel:  ? asm_sysvec_apic_timer_interrupt+0x1b/0x20
Oct 31 14:46:31 lipc-carsus kernel:  ? native_queued_spin_lock_slowpath+0x8f/0x330
Oct 31 14:46:31 lipc-carsus kernel:  _raw_spin_lock+0x3f/0x60
Oct 31 14:46:31 lipc-carsus kernel:  __cifs_put_smb_ses+0xd0/0x4d0 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  ? tconInfoFree+0xb9/0x110 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  cifs_put_tcon.part.0+0x118/0x2d0 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  cifs_put_tlink+0x4a/0x90 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  cifs_umount+0x59/0xb0 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  cifs_kill_sb+0x50/0x60 [cifs]
Oct 31 14:46:31 lipc-carsus kernel:  deactivate_locked_super+0x32/0xb0
Oct 31 14:46:31 lipc-carsus kernel:  deactivate_super+0x4a/0x60
Oct 31 14:46:31 lipc-carsus kernel:  cleanup_mnt+0x105/0x170
Oct 31 14:46:31 lipc-carsus kernel:  __cleanup_mnt+0x12/0x20
Oct 31 14:46:31 lipc-carsus kernel:  task_work_run+0x5e/0xa0
Oct 31 14:46:31 lipc-carsus kernel:  exit_to_user_mode_loop+0x111/0x140
Oct 31 14:46:31 lipc-carsus kernel:  exit_to_user_mode_prepare+0xb9/0xd0
Oct 31 14:46:31 lipc-carsus kernel:  syscall_exit_to_user_mode+0x2a/0x60
Oct 31 14:46:31 lipc-carsus kernel:  do_syscall_64+0x69/0x90
Oct 31 14:46:31 lipc-carsus kernel:  ? syscall_exit_to_user_mode+0x38/0x60
Oct 31 14:46:31 lipc-carsus kernel:  ? do_syscall_64+0x69/0x90
Oct 31 14:46:31 lipc-carsus kernel:  ? exit_to_user_mode_prepare+0x3b/0xd0
Oct 31 14:46:31 lipc-carsus kernel:  ? syscall_exit_to_user_mode+0x38/0x60
Oct 31 14:46:31 lipc-carsus kernel:  ? do_syscall_64+0x69/0x90
Oct 31 14:46:31 lipc-carsus kernel:  entry_SYSCALL_64_after_hwframe+0x73/0xdd
Oct 31 14:46:31 lipc-carsus kernel: RIP: 0033:0x7ff3ab525c2b
Oct 31 14:46:31 lipc-carsus kernel: Code: 0b 32 0f 00 f7 d8 64 89 01 48 83 c8 ff c3 90 f3 0f 1e fa 31 f6 e9 05 00 00 00 0f 1f 44 00 00 f3 0f 1e fa b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 d1 31 0f 00 f7 d8
Oct 31 14:46:31 lipc-carsus kernel: RSP: 002b:00007ffef80064f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
Oct 31 14:46:31 lipc-carsus kernel: RAX: 0000000000000000 RBX: 0000556e9c9971a0 RCX: 00007ff3ab525c2b
Oct 31 14:46:31 lipc-carsus kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000556e9c996cd0
Oct 31 14:46:31 lipc-carsus kernel: RBP: 0000556e9c996aa0 R08: 0000000000000000 R09: 0000556e9c997d70
Oct 31 14:46:31 lipc-carsus kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
Oct 31 14:46:31 lipc-carsus kernel: R13: 0000556e9c996cd0 R14: 0000556e9c996bb0 R15: 0000556e9c996aa0
Oct 31 14:46:31 lipc-carsus kernel:  </TASK>