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INFO: task hung in usbdev_open (2)

Status: upstream: reported on 2023/02/13 07:50
Reported-by: syzbot+5741928503aad4795c45@syzkaller.appspotmail.com
First crash: 1176d, last: 1176d
▶ ▼ Similar bugs (13)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in usbdev_open (3) 1 1 1225d 1225d 0/1 upstream: reported on 2022/12/25 16:08
upstream INFO: task hung in usbdev_open (2) usb 1 C error 2961 1h18m 1951d 0/29 upstream: reported C repro on 2020/12/29 11:48
linux-6.1 INFO: task hung in usbdev_open origin:lts-only 1 C done 3 1071d 1129d 3/3 fixed on 2023/06/28 17:15
linux-4.19 INFO: task hung in usbdev_open (2) 1 2 1624d 1632d 0/1 auto-closed as invalid on 2022/03/21 09:54
linux-5.15 INFO: task hung in usbdev_open origin:lts-only 1 C error 19 589d 1128d 0/3 auto-obsoleted due to no activity on 2024/12/30 11:10
android-6-12 INFO: task hung in usbdev_open origin:upstream 1 syz 58 18d 314d 0/1 premoderation: reported syz repro on 2025/06/24 04:17
linux-6.1 INFO: task hung in usbdev_open (2) 1 1 875d 875d 0/3 auto-obsoleted due to no activity on 2024/03/20 05:29
linux-4.19 INFO: task hung in usbdev_open 1 6 1924d 2011d 0/1 auto-closed as invalid on 2021/05/25 14:21
linux-4.14 INFO: task hung in usbdev_open 1 7 1884d 2022d 0/1 auto-closed as invalid on 2021/07/05 05:59
upstream INFO: task hung in usbdev_open usb 1 2 2413d 2413d 0/29 auto-closed as invalid on 2019/12/23 20:14
linux-6.1 INFO: task hung in usbdev_open (3) 1 1 764d 764d 0/3 auto-obsoleted due to no activity on 2024/07/09 03:03
linux-6.6 INFO: task hung in usbdev_open 1 4 54d 131d 0/2 upstream: reported on 2025/12/23 17:09
upstream INFO: task can't die in usbdev_open usb 1 4 1917d 2030d 0/29 auto-closed as invalid on 2021/04/02 18:49

Sample crash report:
Bluetooth: hci5 command 0x0406 tx timeout
Bluetooth: hci0 command 0x0406 tx timeout
Bluetooth: hci1 command 0x0406 tx timeout
Bluetooth: hci2 command 0x0406 tx timeout
Bluetooth: hci3 command 0x0406 tx timeout
INFO: task syz-executor.2:9549 blocked for more than 140 seconds.
      Not tainted 4.14.305-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D29776  9549   8027 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2811 [inline]
 __schedule+0x88b/0x1de0 kernel/sched/core.c:3386
 schedule+0x8d/0x1b0 kernel/sched/core.c:3430
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488
 __mutex_lock_common kernel/locking/mutex.c:833 [inline]
 __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893
 device_lock include/linux/device.h:1082 [inline]
 usbdev_open+0x142/0x790 drivers/usb/core/devio.c:1023
 chrdev_open+0x23c/0x6d0 fs/char_dev.c:423
 do_dentry_open+0x44b/0xec0 fs/open.c:777

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/02/13 07:49 linux-4.14.y a8ad60f2af58 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 INFO: task hung in usbdev_open
* Struck through repros no longer work on HEAD.