INFO: task hung in usb_deregister

INFO: task hung in usb_deregister_dev
Status: upstream: reported on 2020/07/06 15:22
Reported-by: syzbot+4189d5cde8630463053f@syzkaller.appspotmail.com
First crash: 901d, last: 9d20h

Sample crash report:

INFO: task kworker/1:5:4107 blocked for more than 143 seconds.
      Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:22656 pid: 4107 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4986 [inline]
 __schedule+0x931/0x2360 kernel/sched/core.c:6296
 schedule+0xd2/0x260 kernel/sched/core.c:6369
 rwsem_down_write_slowpath+0x634/0x1110 kernel/locking/rwsem.c:1142
 __down_write_common kernel/locking/rwsem.c:1259 [inline]
 __down_write_common kernel/locking/rwsem.c:1256 [inline]
 __down_write kernel/locking/rwsem.c:1268 [inline]
 down_write+0x135/0x150 kernel/locking/rwsem.c:1515
 usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239
 sisusb_disconnect+0x5a/0x200 drivers/usb/misc/sisusbvga/sisusb.c:3166
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1206
 device_release_driver_internal drivers/base/dd.c:1237 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1260
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
 device_del+0x502/0xd50 drivers/base/core.c:3596
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2228
 hub_port_connect drivers/usb/core/hub.c:5202 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 port_event drivers/usb/core/hub.c:5660 [inline]
 hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742
 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
 process_scheduled_works kernel/workqueue.c:2370 [inline]
 worker_thread+0x833/0x1110 kernel/workqueue.c:2456
 kthread+0x40b/0x500 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
INFO: task kworker/0:6:13149 blocked for more than 143 seconds.
      Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:6     state:D stack:23552 pid:13149 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4986 [inline]
 __schedule+0x931/0x2360 kernel/sched/core.c:6296
 schedule+0xd2/0x260 kernel/sched/core.c:6369
 rwsem_down_write_slowpath+0x634/0x1110 kernel/locking/rwsem.c:1142
 __down_write_common kernel/locking/rwsem.c:1259 [inline]
 __down_write_common kernel/locking/rwsem.c:1256 [inline]
 __down_write kernel/locking/rwsem.c:1268 [inline]
 down_write+0x135/0x150 kernel/locking/rwsem.c:1515
 usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239
 usblp_disconnect+0x46/0x1e0 drivers/usb/class/usblp.c:1396
 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458
 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1206
 device_release_driver_internal drivers/base/dd.c:1237 [inline]
 device_release_driver+0x26/0x40 drivers/base/dd.c:1260
 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529
 device_del+0x502/0xd50 drivers/base/core.c:3596
 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419
 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2228
 hub_port_connect drivers/usb/core/hub.c:5202 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5502 [inline]
 port_event drivers/usb/core/hub.c:5660 [inline]
 hub_event+0x1e39/0x44d0 drivers/usb/core/hub.c:5742
 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
 worker_thread+0x657/0x1110 kernel/workqueue.c:2454
 kthread+0x40b/0x500 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
INFO: task syz-executor.0:29044 blocked for more than 143 seconds.
      Not tainted 5.16.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:29208 pid:29044 ppid:  1299 flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4986 [inline]
 __schedule+0x931/0x2360 kernel/sched/core.c:6296
 schedule+0xd2/0x260 kernel/sched/core.c:6369
 rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1032
 __down_read_common kernel/locking/rwsem.c:1214 [inline]
 __down_read kernel/locking/rwsem.c:1223 [inline]
 down_read+0xe2/0x440 kernel/locking/rwsem.c:1463
 usb_open+0x24/0x2e0 drivers/usb/core/file.c:39
 chrdev_open+0x266/0x770 fs/char_dev.c:414
 do_dentry_open+0x4b4/0x1100 fs/open.c:824
 do_open fs/namei.c:3426 [inline]
 path_openat+0x1c9e/0x2940 fs/namei.c:3559
 do_filp_open+0x1aa/0x400 fs/namei.c:3586
 do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
 do_sys_open fs/open.c:1230 [inline]
 __do_sys_openat fs/open.c:1246 [inline]
 __se_sys_openat fs/open.c:1241 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f0f46505f04
RSP: 002b:00007f0f45686ca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0f46666100 RCX: 00007f0f46505f04
RDX: 0000000000000002 RSI: 00007f0f45686d40 RDI: 00000000ffffff9c
RBP: 00007f0f45686d40 R08: 0000000000000000 R09: 000000000000000f
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007ffc6a22356f R14: 00007f0f45687300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/24:
 #0: ffffffff878923c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/1230:
 #0: ffff88810cf6d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900000432e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
6 locks held by kworker/1:5/4107:
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc90001ea7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810ce34220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #2: ffff88810ce34220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: ffff88810dd81220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #3: ffff88810dd81220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
 #4: ffff888116c0d1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #4: ffff888116c0d1a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
 #4: ffff888116c0d1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
 #4: ffff888116c0d1a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
 #5: ffffffff881c7e50 (minor_rwsem){++++}-{3:3}, at: usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239
6 locks held by kworker/0:6/13149:
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:631 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:658 [inline]
 #0: ffff888103bec938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x890/0x1650 kernel/workqueue.c:2278
 #1: ffffc90002cf7db0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8c4/0x1650 kernel/workqueue.c:2282
 #2: ffff88810c66c220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #2: ffff88810c66c220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c5/0x44d0 drivers/usb/core/hub.c:5688
 #3: ffff88810c507220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #3: ffff88810c507220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x78e drivers/usb/core/hub.c:2219
 #4: ffff888113eb51a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline]
 #4: ffff888113eb51a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1033 [inline]
 #4: ffff888113eb51a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1234 [inline]
 #4: ffff888113eb51a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1260
 #5: ffffffff881c7e50 (minor_rwsem){++++}-{3:3}, at: usb_deregister_dev+0xaa/0x320 drivers/usb/core/file.c:239
3 locks held by udevd/24195:
 #0: ffff888111241c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:203 [inline]
 #0: ffff888111241c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x185/0x5f0 fs/kernfs/file.c:242
 #1: ffff88810c2dbcb8 (kn->active#51){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:204 [inline]
 #1: ffff88810c2dbcb8 (kn->active#51){++++}-{0:0}, at: kernfs_fop_read_iter+0x1a8/0x5f0 fs/kernfs/file.c:242
 #2: ffff88810dd81220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:765 [inline]
 #2: ffff88810dd81220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
2 locks held by syz-executor.0/29041:
 #0: ffffffff881c7e50 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39
 #1: ffff888109b558d0 (&(sisusb->lock)){+.+.}-{3:3}, at: sisusb_open+0xb2/0x4d0 drivers/usb/misc/sisusbvga/sisusb.c:2396
1 lock held by syz-executor.0/29044:
 #0: ffffffff881c7e50 (minor_rwsem){++++}-{3:3}, at: usb_open+0x24/0x2e0 drivers/usb/core/file.c:39

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 24 Comm: khungtaskd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1b3/0x230 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
 watchdog+0xc1d/0xf50 kernel/hung_task.c:295
 kthread+0x40b/0x500 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:110 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_idle_do_entry+0x1c6/0x250 drivers/acpi/processor_idle.c:551

Crashes (221):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Title
ci2-upstream-usb	2022/01/18 09:40	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	455e73a07f6e	731a2d23	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2022/01/14 20:02	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	455e73a07f6e	53e00b45	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2022/01/14 02:37	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	455e73a07f6e	b8d780ab	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/12/26 06:54	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ce1d37cb7697	6caa12e4	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/12/07 09:42	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	d598c3c46ea6	0230ba3e	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/12/06 19:52	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	d598c3c46ea6	579a8754	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/12/03 23:33	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	76c4c95dac0d	c7c20675	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/11/30 15:44	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4d012040161c	80270552	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/11/17 20:27	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ba67723f9461	cafff8b6	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/11/15 15:47	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8ab774587903	75b04091	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/11/04 15:42	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	a0548b26901f	4c1be0be	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/13 21:44	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	e27bea459d5e	5462d470	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/08 09:35	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	2c52ad743fee	efe0f24d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/08 03:58	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	2c52ad743fee	efe0f24d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/07 23:37	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	2c52ad743fee	efe0f24d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/06 02:59	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	89e84f946479	0a63fd36	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/04 23:17	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	ce697b49	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/02 23:15	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	db0f5787	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/10/01 05:36	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	1d849ab4	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/30 19:02	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	0f01403d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/30 01:33	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	be530f6c	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/29 07:13	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	d82cb927	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/28 15:59	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	d82cb927	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/28 00:43	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae9a6149884e	78494d16	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/27 01:25	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8217f07a5023	78494d16	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/24 02:21	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8217f07a5023	8cac236e	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/23 02:18	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8217f07a5023	8cac236e	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/18 15:13	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	70b76c1d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/18 01:46	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	70b76c1d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/17 21:27	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	70b76c1d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/17 20:09	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	70b76c1d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/16 07:31	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	07e953c1	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/15 07:48	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	ae8709b296d8	07e953c1	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/14 22:55	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	44a0f3bb69a3	07e953c1	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/08 23:02	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	4b93c544e90e	e2776ee4	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/05 09:17	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	1b4f3dfb4792	d236a457	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/02 12:19	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	1b4f3dfb4792	d0f0970b	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/09/01 02:46	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	9c1587d99f93	7eb7e152	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/08/29 04:51	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	9c1587d99f93	be2c130d	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/08/25 03:57	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	bfa109d761a4	b599f2fc	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/07/25 01:12	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8e6cb5d27e82	4d1b57d4	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/07/24 15:23	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	8e6cb5d27e82	4d1b57d4	.config	log	report	info	INFO: task hung in usb_deregister_dev
ci2-upstream-usb	2021/01/09 20:51	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	841081d89d5a	a6c52263	.config	log	report	info
ci2-upstream-usb	2020/07/05 00:56	https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing	768a07412843	24d7f505	.config	log	report
ci2-upstream-usb	2019/08/11 00:40	https://github.com/google/kasan.git usb-fuzzer	e96407b49762	acb51638	.config	log	report