INFO: task hung in usb_audio_probe (3)

Status: auto-obsoleted due to no activity on 2025/05/06 03:30
Subsystems: sound
[Documentation on labels]
First crash: 678d, last: 558d
▶ ▼ Similar bugs (8)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in usb_audio_probe (5) sound 1 483 98d 124d 29/29 fixed on 2026/05/21 07:49
upstream INFO: task hung in usb_audio_probe (2) sound 1 1 789d 789d 0/29 auto-obsoleted due to no activity on 2024/09/17 10:08
linux-6.1 INFO: task hung in usb_audio_probe 1 1 10d 10d 0/3 upstream: reported on 2026/08/07 20:01
linux-5.15 INFO: task hung in usb_audio_probe 1 1 15d 15d 0/3 upstream: reported on 2026/08/02 20:10
upstream INFO: task hung in usb_audio_probe sound 1 1 1823d 1823d 0/29 auto-closed as invalid on 2021/11/18 21:08
upstream INFO: task hung in usb_audio_probe (4) sound 1 1 444d 444d 0/29 auto-obsoleted due to no activity on 2025/08/28 06:21
android-6-12 INFO: task hung in usb_audio_probe 1 syz, C 80 15d 153d 0/1 premoderation: reported C repro on 2026/03/17 07:22
linux-6.6 INFO: task hung in usb_audio_probe 1 11 93d 113d 0/2 auto-obsoleted due to no activity on 2026/07/25 19:52

Sample crash report:
INFO: task kworker/0:2:978 blocked for more than 143 seconds.
      Not tainted 6.14.0-rc1-syzkaller-00026-gd009de7d5428 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2     state:D stack:20752 pid:978   tgid:978   ppid:2      task_flags:0x4208060 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
 usb_audio_probe+0x417/0x2100 sound/usb/card.c:813
 usb_probe_interface+0x641/0xbb0 drivers/usb/core/driver.c:396
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x333/0x520 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3665
 usb_set_configuration+0x1976/0x1fb0 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x88/0x140 drivers/usb/core/generic.c:250
 usb_probe_device+0x1b8/0x380 drivers/usb/core/driver.c:291
 really_probe+0x2b9/0xad0 drivers/base/dd.c:658
 __driver_probe_device+0x1a2/0x390 drivers/base/dd.c:800
 driver_probe_device+0x50/0x430 drivers/base/dd.c:830
 __device_attach_driver+0x2d6/0x530 drivers/base/dd.c:958
 bus_for_each_drv+0x24e/0x2e0 drivers/base/bus.c:462
 __device_attach+0x333/0x520 drivers/base/dd.c:1030
 bus_probe_device+0x189/0x260 drivers/base/bus.c:537
 device_add+0x856/0xbf0 drivers/base/core.c:3665
 usb_new_device+0x104a/0x19a0 drivers/usb/core/hub.c:2652
 hub_port_connect drivers/usb/core/hub.c:5523 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5663 [inline]
 port_event drivers/usb/core/hub.c:5823 [inline]
 hub_event+0x2d6d/0x5150 drivers/usb/core/hub.c:5905
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317
 worker_thread+0x870/0xd30 kernel/workqueue.c:3398
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task udevd:5846 blocked for more than 151 seconds.
      Not tainted 6.14.0-rc1-syzkaller-00026-gd009de7d5428 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D stack:22208 pid:5846  tgid:5846  ppid:5208   task_flags:0x400140 flags:0x00000002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x190e/0x4c90 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6856
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6913
 __mutex_lock_common kernel/locking/mutex.c:662 [inline]
 __mutex_lock+0x817/0x1010 kernel/locking/mutex.c:730
 device_lock include/linux/device.h:1030 [inline]
 uevent_show+0x17d/0x340 drivers/base/core.c:2729
 dev_attr_show+0x55/0xc0 drivers/base/core.c:2423
 sysfs_kf_seq_show+0x331/0x4c0 fs/sysfs/file.c:59
 seq_read_iter+0x43f/0xd70 fs/seq_file.c:230
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x975/0xb40 fs/read_write.c:565
 ksys_read+0x18f/0x2b0 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3d67516b6a
RSP: 002b:00007ffcd1a122d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 000056474d4025d0 RCX: 00007f3d67516b6a
RDX: 0000000000001000 RSI: 000056474d3db620 RDI: 0000000000000008
RBP: 000056474d4025d0 R08: 0000000000000008 R09: 0000000000000000
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000000

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/05 03:29 upstream d009de7d5428 4baca3d6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in usb_audio_probe
2024/11/20 02:23 upstream a5c93bfec0be 7d02db5a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root INFO: task hung in usb_audio_probe
2024/10/09 00:41 upstream 5b7c893ed5ed 402f1df0 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 INFO: task hung in usb_audio_probe
* Struck through repros no longer work on HEAD.