And this call trace looks is related to current issue, I guess snd_power_ref_and_wait was waiting for snd_card_disconnect which wakes up power_sleep at the end of the code, but snd_card_disconnect -> snd_device_disconnect_all -> snd_pcm_dev_disconnect was blocked for some reason.
Apr 15 21:48:23 xps9320 kernel: [43261.751897] INFO: task kworker/0:6:34416 blocked for more than 120 seconds. Apr 15 21:48:23 xps9320 kernel: [43261.751900] Tainted: G OE 6.5.0-27-generic #28~22.04.1-Ubuntu Apr 15 21:48:23 xps9320 kernel: [43261.751901] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 15 21:48:23 xps9320 kernel: [43261.751903] task:kworker/0:6 state:D stack:0 pid:34416 ppid:2 flags:0x00004000 Apr 15 21:48:23 xps9320 kernel: [43261.751907] Workqueue: usb_hub_wq hub_event Apr 15 21:48:23 xps9320 kernel: [43261.751913] Call Trace: Apr 15 21:48:23 xps9320 kernel: [43261.751915] <TASK> Apr 15 21:48:23 xps9320 kernel: [43261.751916] __schedule+0x2cb/0x750 Apr 15 21:48:23 xps9320 kernel: [43261.751921] schedule+0x63/0x110 Apr 15 21:48:23 xps9320 kernel: [43261.751924] schedule_preempt_disabled+0x15/0x30 Apr 15 21:48:23 xps9320 kernel: [43261.751928] rwsem_down_write_slowpath+0x2a2/0x550 Apr 15 21:48:23 xps9320 kernel: [43261.751940] down_write+0x5c/0x80 Apr 15 21:48:23 xps9320 kernel: [43261.751945] snd_pcm_dev_disconnect+0x1d2/0x280 [snd_pcm] Apr 15 21:48:23 xps9320 kernel: [43261.751964] snd_device_disconnect_all+0x47/0xa0 [snd] Apr 15 21:48:23 xps9320 kernel: [43261.751979] snd_card_disconnect.part.0+0x10d/0x290 [snd] Apr 15 21:48:23 xps9320 kernel: [43261.752019] ? rpm_idle+0x25/0x2b0 Apr 15 21:48:23 xps9320 kernel: [43261.752023] snd_card_disconnect+0x13/0x30 [snd] Apr 15 21:48:23 xps9320 kernel: [43261.752039] usb_audio_disconnect+0x114/0x2c0 [snd_usb_audio] Apr 15 21:48:23 xps9320 kernel: [43261.752064] usb_unbind_interface+0x8e/0x280 Apr 15 21:48:23 xps9320 kernel: [43261.752069] device_remove+0x65/0x80 Apr 15 21:48:23 xps9320 kernel: [43261.752072] device_release_driver_internal+0x20b/0x270 Apr 15 21:48:23 xps9320 kernel: [43261.752077] device_release_driver+0x12/0x20 Apr 15 21:48:23 xps9320 kernel: [43261.752080] bus_remove_device+0xcb/0x140 Apr 15 21:48:23 xps9320 kernel: [43261.752083] device_del+0x161/0x3e0 Apr 15 21:48:23 xps9320 kernel: [43261.752086] ? kobject_put+0x67/0xa0 Apr 15 21:48:23 xps9320 kernel: [43261.752090] usb_disable_device+0xd5/0x280 Apr 15 21:48:23 xps9320 kernel: [43261.752093] usb_disconnect+0xe9/0x2e0 Apr 15 21:48:23 xps9320 kernel: [43261.752097] usb_disconnect+0xcd/0x2e0 Apr 15 21:48:23 xps9320 kernel: [43261.752100] usb_disconnect+0xcd/0x2e0 Apr 15 21:48:23 xps9320 kernel: [43261.752102] ? usb_control_msg+0x106/0x160 Apr 15 21:48:23 xps9320 kernel: [43261.752105] hub_port_connect+0x90/0xc30 Apr 15 21:48:23 xps9320 kernel: [43261.752109] hub_port_connect_change+0x91/0x300 Apr 15 21:48:23 xps9320 kernel: [43261.752113] port_event+0x652/0x810 Apr 15 21:48:23 xps9320 kernel: [43261.752117] hub_event+0x155/0x450 Apr 15 21:48:23 xps9320 kernel: [43261.752120] process_one_work+0x23d/0x450 Apr 15 21:48:23 xps9320 kernel: [43261.752125] worker_thread+0x50/0x3f0 Apr 15 21:48:23 xps9320 kernel: [43261.752128] ? __pfx_worker_thread+0x10/0x10 Apr 15 21:48:23 xps9320 kernel: [43261.752131] kthread+0xef/0x120 Apr 15 21:48:23 xps9320 kernel: [43261.752135] ? __pfx_kthread+0x10/0x10 Apr 15 21:48:23 xps9320 kernel: [43261.752139] ret_from_fork+0x44/0x70 Apr 15 21:48:23 xps9320 kernel: [43261.752143] ? __pfx_kthread+0x10/0x10 Apr 15 21:48:23 xps9320 kernel: [43261.752147] ret_from_fork_asm+0x1b/0x30 Apr 15 21:48:23 xps9320 kernel: [43261.752151] </TASK> -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-signed-hwe-6.5 in Ubuntu. https://bugs.launchpad.net/bugs/2061091 Title: Freezing user space processes failed after 20.008 seconds (1 tasks refusing to freeze, wq_busy=0) Status in linux-signed-hwe-6.5 package in Ubuntu: New Bug description: Sometimes, when trying to shut down or suspend my laptop, it gets stuck on the console screen. If I was suspending, it eventually gives up and goes back to the X session. During a shutdown it hangs forever and the only solution seems to be to force a reboot with Magic-SysRq. The following appears in `kern.log`: ``` Apr 12 08:59:54 xps9320 kernel: [173172.510341] Freezing user space processes failed after 20.008 seconds (1 tasks refusing to freeze, wq_busy=0): Apr 12 08:59:54 xps9320 kernel: [173172.515669] task:wireplumber state:D stack:0 pid:2408 ppid:2398 flags:0x00000006 Apr 12 08:59:54 xps9320 kernel: [173172.518923] Call Trace: Apr 12 08:59:54 xps9320 kernel: [173172.521755] <TASK> Apr 12 08:59:54 xps9320 kernel: [173172.524099] __schedule+0x2cb/0x750 Apr 12 08:59:54 xps9320 kernel: [173172.526333] schedule+0x63/0x110 Apr 12 08:59:54 xps9320 kernel: [173172.528585] snd_power_ref_and_wait+0xe5/0x140 [snd] Apr 12 08:59:54 xps9320 kernel: [173172.530825] ? __pfx_autoremove_wake_function+0x10/0x10 Apr 12 08:59:54 xps9320 kernel: [173172.533103] snd_ctl_elem_info+0x4f/0x1b0 [snd] Apr 12 08:59:54 xps9320 kernel: [173172.535354] snd_ctl_elem_info_user+0x59/0xc0 [snd] Apr 12 08:59:54 xps9320 kernel: [173172.537598] snd_ctl_ioctl+0x1d4/0x650 [snd] Apr 12 08:59:54 xps9320 kernel: [173172.539846] ? __fget_light+0xa5/0x120 Apr 12 08:59:54 xps9320 kernel: [173172.542082] __x64_sys_ioctl+0xa0/0xf0 Apr 12 08:59:54 xps9320 kernel: [173172.544334] do_syscall_64+0x58/0x90 Apr 12 08:59:54 xps9320 kernel: [173172.546566] ? syscall_exit_to_user_mode+0x37/0x60 Apr 12 08:59:54 xps9320 kernel: [173172.548838] ? do_syscall_64+0x67/0x90 Apr 12 08:59:54 xps9320 kernel: [173172.551085] ? do_syscall_64+0x67/0x90 Apr 12 08:59:54 xps9320 kernel: [173172.553342] ? syscall_exit_to_user_mode+0x37/0x60 Apr 12 08:59:54 xps9320 kernel: [173172.555596] ? do_syscall_64+0x67/0x90 Apr 12 08:59:54 xps9320 kernel: [173172.557828] ? common_interrupt+0x54/0xb0 Apr 12 08:59:54 xps9320 kernel: [173172.560075] entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Apr 12 08:59:54 xps9320 kernel: [173172.562321] RIP: 0033:0x70f3adb1a94f Apr 12 08:59:54 xps9320 kernel: [173172.564650] RSP: 002b:00007ffef2072940 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 Apr 12 08:59:54 xps9320 kernel: [173172.566925] RAX: ffffffffffffffda RBX: 00007ffef20729b0 RCX: 000070f3adb1a94f Apr 12 08:59:54 xps9320 kernel: [173172.569222] RDX: 00007ffef20729b0 RSI: 00000000c1105511 RDI: 0000000000000022 Apr 12 08:59:54 xps9320 kernel: [173172.571501] RBP: 00007ffef2072b90 R08: 000065107d2b6070 R09: 0000000000000004 Apr 12 08:59:54 xps9320 kernel: [173172.573762] R10: fffffffffffff014 R11: 0000000000000246 R12: 000065107d2ee100 Apr 12 08:59:54 xps9320 kernel: [173172.576047] R13: 000065107d1fb400 R14: 00007ffef2072b30 R15: 00007ffef2072ad0 Apr 12 08:59:54 xps9320 kernel: [173172.578308] </TASK> ``` Another point of interest is that, when in this situation: * `lsusb` hangs after printing out a few lines * Outgoing SSH connections hang unless I clear SSH_AUTH_SOCK. gpg-agent appears to be trying to check for smartcards. So I guess there is some sort of deadlock in the USB subsystem which is causing all the other problems? ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: linux-image-6.5.0-27-generic 6.5.0-27.28~22.04.1 ProcVersionSignature: Ubuntu 6.5.0-27.28~22.04.1-generic 6.5.13 Uname: Linux 6.5.0-27-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Fri Apr 12 09:42:52 2024 InstallationDate: Installed on 2022-06-28 (653 days ago) InstallationMedia: Xubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 (20220419) SourcePackage: linux-signed-hwe-6.5 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-6.5/+bug/2061091/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
