Public bug reported:
My ThinkPad froze, after a reboot this is what I found in the logs:
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: watchdog: BUG: soft lockup - CPU#1
stuck for 26s! [bluetoothd:1667]
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: Modules linked in: xt_set ip_set
xt_addrtype xfrm_user xfrm_algo ccm rfcomm snd_seq_dummy snd_hrtimer snd_seq>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: snd_soc_acpi mei_hdcp
intel_powerclamp ee1004 mei_pxp uvcvideo iwlmvm snd_soc_core coretemp
videobuf2_vmallo>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: crct10dif_pclmul crc32_pclmul
polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 nv>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: CPU: 1 PID: 1667 Comm: bluetoothd Not
tainted 6.8.0-90-generic #91-Ubuntu
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: Hardware name: LENOVO
20HES0FX00/20HES0FX00, BIOS N1QETA4W (1.79 ) 11/05/2024
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RIP: 0010:bt_sock_poll+0x16d/0x1a0
[bluetooth]
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: Code: ff ff 48 81 e9 f8 02 00 00 48 39
d3 75 2d eb 3d 48 8b 83 10 03 00 00 a8 01 74 08 0f b6 42 12 3c 06 74 2>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RSP: 0018:ffffd25280a0f720 EFLAGS:
00000246
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RAX: ffff8f1f049ce6f8 RBX:
ffff8f1f04babc00 RCX: ffff8f1f049ce400
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RDX: ffff8f1f049ce400 RSI:
ffff8f1f0426adc0 RDI: ffff8f1f2225a400
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RBP: ffffd25280a0f728 R08:
ffff8f1f2225a400 R09: 0000000000000000
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: R10: 0000000000000000 R11:
0000000000000000 R12: ffff8f1f0426ad80
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: R13: ffff8f1f2225a400 R14:
0000000000000000 R15: ffffffffc0ba8900
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: FS: 00007dc0eec16800(0000)
GS:ffff8f224f480000(0000) knlGS:0000000000000000
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: CR2: 00001f2000fd1014 CR3:
00000001243b2002 CR4: 00000000003706f0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: Call Trace:
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: <TASK>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: sock_poll+0x57/0x100
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: do_poll.constprop.0+0x12e/0x3c0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: do_sys_poll+0x1ef/0x290
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: __x64_sys_poll+0x4e/0x150
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: x64_sys_call+0x1507/0x25a0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: do_syscall_64+0x7f/0x180
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? eventfd_read+0xd3/0x200
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? security_file_permission+0x36/0x60
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? vfs_read+0x25c/0x390
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? ksys_read+0x73/0x100
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? ksys_write+0x73/0x100
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? __x64_sys_poll+0xc7/0x150
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ?
irqentry_exit_to_user_mode+0x38/0x1e0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: ? irqentry_exit+0x43/0x50
Jan 22 12:54:06 mo-ThinkPad-T470 kernel:
entry_SYSCALL_64_after_hwframe+0x78/0x80
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RIP: 0033:0x7dc0eeb1b4c4
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: Code: 00 f7 d8 64 89 01 48 83 c8 ff c3
66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d 85 fb 0e 00 00 74 1>
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RSP: 002b:00007ffea2536938 EFLAGS:
00000202 ORIG_RAX: 0000000000000007
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RAX: ffffffffffffffda RBX:
0000626753c858c0 RCX: 00007dc0eeb1b4c4
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RDX: 00000000ffffffff RSI:
0000000000000012 RDI: 0000626753c993d0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: RBP: 00007ffea2536990 R08:
0000000000000013 R09: 000000007fffffff
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: R10: 0000626753c858c0 R11:
0000000000000202 R12: 000000007fffffff
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: R13: 00007dc0eee52b80 R14:
0000000000000012 R15: 0000626753c993d0
Jan 22 12:54:06 mo-ThinkPad-T470 kernel: </TASK>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: watchdog: BUG: soft lockup - CPU#1
stuck for 52s! [bluetoothd:1667]
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: Modules linked in: xt_set ip_set
xt_addrtype xfrm_user xfrm_algo ccm rfcomm snd_seq_dummy snd_hrtimer snd_seq>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: snd_soc_acpi mei_hdcp
intel_powerclamp ee1004 mei_pxp uvcvideo iwlmvm snd_soc_core coretemp
videobuf2_vmallo>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: crct10dif_pclmul crc32_pclmul
polyval_clmulni polyval_generic ghash_clmulni_intel sha256_ssse3 sha1_ssse3 nv>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: CPU: 1 PID: 1667 Comm: bluetoothd
Tainted: G L 6.8.0-90-generic #91-Ubuntu
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: Hardware name: LENOVO
20HES0FX00/20HES0FX00, BIOS N1QETA4W (1.79 ) 11/05/2024
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RIP: 0010:bt_sock_poll+0x153/0x1a0
[bluetooth]
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: Code: 31 c9 31 f6 31 ff c3 cc cc cc cc
48 8b 83 f8 02 00 00 48 8b 08 48 8d 90 08 fd ff ff 48 81 e9 f8 02 00 0>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RSP: 0018:ffffd25280a0f720 EFLAGS:
00000202
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RAX: 0000000000000009 RBX:
ffff8f1f04babc00 RCX: ffff8f1f049ce400
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RDX: ffff8f1f049ce400 RSI:
ffff8f1f0426adc0 RDI: ffff8f1f2225a400
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RBP: ffffd25280a0f728 R08:
ffff8f1f2225a400 R09: 0000000000000000
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: R10: 0000000000000000 R11:
0000000000000000 R12: ffff8f1f0426ad80
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: R13: ffff8f1f2225a400 R14:
0000000000000000 R15: ffffffffc0ba8900
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: FS: 00007dc0eec16800(0000)
GS:ffff8f224f480000(0000) knlGS:0000000000000000
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: CR2: 00001f2000fd1014 CR3:
00000001243b2002 CR4: 00000000003706f0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: Call Trace:
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: <TASK>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: sock_poll+0x57/0x100
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: do_poll.constprop.0+0x12e/0x3c0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: do_sys_poll+0x1ef/0x290
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __pfx_pollwake+0x10/0x10
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: __x64_sys_poll+0x4e/0x150
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: x64_sys_call+0x1507/0x25a0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: do_syscall_64+0x7f/0x180
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? eventfd_read+0xd3/0x200
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? security_file_permission+0x36/0x60
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? vfs_read+0x25c/0x390
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? ksys_read+0x73/0x100
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? ksys_write+0x73/0x100
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? __x64_sys_poll+0xc7/0x150
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ?
arch_exit_to_user_mode_prepare.isra.0+0x1a/0xe0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? syscall_exit_to_user_mode+0x43/0x1e0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? do_syscall_64+0x8c/0x180
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ?
irqentry_exit_to_user_mode+0x38/0x1e0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: ? irqentry_exit+0x43/0x50
Jan 22 12:54:34 mo-ThinkPad-T470 kernel:
entry_SYSCALL_64_after_hwframe+0x78/0x80
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RIP: 0033:0x7dc0eeb1b4c4
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: Code: 00 f7 d8 64 89 01 48 83 c8 ff c3
66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 80 3d 85 fb 0e 00 00 74 1>
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RSP: 002b:00007ffea2536938 EFLAGS:
00000202 ORIG_RAX: 0000000000000007
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RAX: ffffffffffffffda RBX:
0000626753c858c0 RCX: 00007dc0eeb1b4c4
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RDX: 00000000ffffffff RSI:
0000000000000012 RDI: 0000626753c993d0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: RBP: 00007ffea2536990 R08:
0000000000000013 R09: 000000007fffffff
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: R10: 0000626753c858c0 R11:
0000000000000202 R12: 000000007fffffff
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: R13: 00007dc0eee52b80 R14:
0000000000000012 R15: 0000626753c993d0
Jan 22 12:54:34 mo-ThinkPad-T470 kernel: </TASK>
ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: linux-image-6.8.0-90-generic 6.8.0-90.91
ProcVersionSignature: Ubuntu 6.8.0-90.91-generic 6.8.12
Uname: Linux 6.8.0-90-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: mo 4070 F.... wireplumber
/dev/snd/seq: mo 4066 F.... pipewire
CRDA: N/A
CasperMD5CheckResult: pass
CurrentDesktop: i3
Date: Thu Jan 22 13:11:39 2026
InstallationDate: Installed on 2023-02-07 (1080 days ago)
InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64
(20220809.1)
MachineType: LENOVO 20HES0FX00
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.8.0-90-generic
root=/dev/mapper/vgubuntu-root ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-6.8.0-90-generic N/A
linux-backports-modules-6.8.0-90-generic N/A
linux-firmware 20240318.git3b128b60-0ubuntu2.22
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/05/2024
dmi.bios.release: 1.79
dmi.bios.vendor: LENOVO
dmi.bios.version: N1QETA4W (1.79 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20HES0FX00
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.ec.firmware.release: 1.36
dmi.modalias:
dmi:bvnLENOVO:bvrN1QETA4W(1.79):bd11/05/2024:br1.79:efr1.36:svnLENOVO:pn20HES0FX00:pvrThinkPadT470:rvnLENOVO:rn20HES0FX00:rvrNotDefined:cvnLENOVO:ct10:cvrNone:skuLENOVO_MT_20HE_BU_Think_FM_ThinkPadT470:
dmi.product.family: ThinkPad T470
dmi.product.name: 20HES0FX00
dmi.product.sku: LENOVO_MT_20HE_BU_Think_FM_ThinkPad T470
dmi.product.version: ThinkPad T470
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug noble
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https://bugs.launchpad.net/bugs/2138874
Title:
Soft lockup in bt_sock_poll on ThinkPad T470 (Kernel 6.8.0-90)
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