syzbot


INFO: task hung in usb_deregister_dev

Status: auto-obsoleted due to no activity on 2023/08/20 12:33
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+4189d5cde8630463053f@syzkaller.appspotmail.com
First crash: 1805d, last: 455d
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly usb report (Apr 2023) 0 (1) 2023/05/01 09:05
INFO: task hung in usb_deregister_dev 0 (1) 2020/07/06 15:22
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 INFO: task hung in usb_deregister_dev 1 418d 418d 0/3 auto-obsoleted due to no activity on 2023/09/05 16:52
linux-5.15 INFO: task hung in usb_deregister_dev 1 476d 476d 0/3 auto-obsoleted due to no activity on 2023/07/30 01:49

Sample crash report:
INFO: task kworker/0:0:18007 blocked for more than 143 seconds.
      Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D stack:23840 pid:18007 ppid:2      flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5307 [inline]
 __schedule+0xc91/0x5770 kernel/sched/core.c:6625
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
 rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
 usb_deregister_dev+0xa9/0x320 drivers/usb/core/file.c:239
 sisusb_disconnect+0x5e/0x200 drivers/usb/misc/sisusbvga/sisusbvga.c:2907
 usb_unbind_interface+0x1dc/0x8e0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:542 [inline]
 device_remove+0x11f/0x170 drivers/base/dd.c:534
 __device_release_driver drivers/base/dd.c:1240 [inline]
 device_release_driver_internal+0x443/0x610 drivers/base/dd.c:1263
 bus_remove_device+0x22c/0x420 drivers/base/bus.c:574
 device_del+0x48a/0xb80 drivers/base/core.c:3775
 usb_disable_device+0x35a/0x7b0 drivers/usb/core/message.c:1420
 usb_disconnect+0x2db/0x8a0 drivers/usb/core/hub.c:2238
 hub_port_connect drivers/usb/core/hub.c:5246 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5551 [inline]
 port_event drivers/usb/core/hub.c:5711 [inline]
 hub_event+0x1fbf/0x4e40 drivers/usb/core/hub.c:5793
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 process_scheduled_works kernel/workqueue.c:2453 [inline]
 worker_thread+0x858/0x1090 kernel/workqueue.c:2539
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
 #0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4753:
 #0: ffff88802c289098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
6 locks held by kworker/0:0/18007:
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
 #0: ffff888145118538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
 #1: ffffc9000f81fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
 #2: ffff888021c82190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #2: ffff888021c82190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4e40 drivers/usb/core/hub.c:5739
 #3: ffff8880505f4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #3: ffff8880505f4190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x8a0 drivers/usb/core/hub.c:2229
 #4: ffff8880ac9fd118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
 #4: ffff8880ac9fd118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline]
 #4: ffff8880ac9fd118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1260
 #5: ffffffff8d826430 (minor_rwsem#2){++++}-{3:3}, at: usb_deregister_dev+0xa9/0x320 drivers/usb/core/file.c:239
3 locks held by kworker/u4:5/29565:
2 locks held by syz-executor.4/24968:
 #0: ffffffff8d826430 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39
 #1: ffff8880330690d0 (&(sisusb->lock)){+.+.}-{3:3}, at: sisusb_open+0xb6/0x4e0 drivers/usb/misc/sisusbvga/sisusbvga.c:2213
4 locks held by udevd/24969:
 #0: ffff88803a8e10a0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xe3/0x12d0 fs/seq_file.c:182
 #1: ffff8880974e5888 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x450 fs/kernfs/file.c:154
 #2: ffff8880006352c0 (kn->active#23){++++}-{0:0}, at: kernfs_seq_start+0x75/0x450 fs/kernfs/file.c:155
 #3: ffff8880505f4190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:837 [inline]
 #3: ffff8880505f4190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor.4/25443:
 #0: ffffffff8d826430 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39
1 lock held by syz-executor.4/25576:
 #0: ffffffff8d826430 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xe16/0x1090 kernel/hung_task.c:379
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5165 Comm: kworker/0:7 Not tainted 6.3.0-rc7-syzkaller-00181-g8e41e0a57566 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue:  0x0 (wg-crypt-wg1)
RIP: 0010:__rq_lockp kernel/sched/sched.h:1241 [inline]
RIP: 0010:lockdep_assert_rq_held kernel/sched/sched.h:1357 [inline]
RIP: 0010:rq_clock kernel/sched/sched.h:1501 [inline]
RIP: 0010:sched_info_depart kernel/sched/stats.h:262 [inline]
RIP: 0010:sched_info_switch kernel/sched/stats.h:284 [inline]
RIP: 0010:prepare_task_switch kernel/sched/core.c:5114 [inline]
RIP: 0010:context_switch kernel/sched/core.c:5258 [inline]
RIP: 0010:__schedule+0x3644/0x5770 kernel/sched/core.c:6625
Code: 00 00 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 84 d2 d1 ff ff 4c 89 ef e8 a1 01 d2 f7 e9 c5 d1 ff ff <49> 8d bf 48 0d 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc900048a7ca0 EFLAGS: 00000002
RAX: ffff8880b983c280 RBX: ffffffff8e779130 RCX: ffffffff8a01d794
RDX: 1ffff110173079fb RSI: 0000000000000003 RDI: ffff888018a53290
RBP: ffffc900048a7e18 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1ceeb82 R11: dffffc0000000000 R12: ffff888016693a80
R13: ffff8880b983cca0 R14: ffff8880b983c280 R15: ffff8880b983c280
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c017504c42 CR3: 0000000028ceb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000003b DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 schedule+0xde/0x1a0 kernel/sched/core.c:6701
 worker_thread+0x160/0x1090 kernel/workqueue.c:2558
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Crashes (258):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/04/22 12:33 upstream 8e41e0a57566 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in usb_deregister_dev
2023/04/20 23:17 upstream cb0856346a60 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce INFO: task hung in usb_deregister_dev
2022/08/08 13:23 upstream 200e340f2196 88e3a122 .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in usb_deregister_dev
2022/03/17 00:28 upstream 56e337f2cf13 dfa9a8ed .config console log report info ci-upstream-kasan-gce INFO: task hung in usb_deregister_dev
2023/04/15 19:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8e86652e3e71 ec410564 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2023/02/12 05:16 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f87b564686ee 93e26d60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2023/01/22 21:32 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dd2f003e4e85 cc0f9968 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2023/01/09 22:58 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing c2fb9a214da1 48bc529a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/12/20 09:12 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f9ff5644bcc0 c52b2efb .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/12/19 08:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing f9ff5644bcc0 05494336 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/12/09 07:53 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 81c25247a2a0 1034e5fa .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/12/08 11:39 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 1524ceb14dd5 d88f3abb .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/11/20 06:36 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dd65a243a915 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/11/17 14:22 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dd65a243a915 3a127a31 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/11/13 03:02 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing dd65a243a915 f42ee5d8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/11/03 12:19 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bd707a4f9ebe 7a2ebf95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/10/19 01:58 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a6afa4199d3d b31320fc .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/10/15 07:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a6afa4199d3d 67cb024c .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/10/08 13:15 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 00988f70a076 aea5da89 .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/10/07 01:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 00988f70a076 80b58a42 .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/10/06 17:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 00988f70a076 80b58a42 .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/09/28 05:07 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bce2b0539933 75c78242 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/09/23 13:26 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing b294c2bf4cfd 0042f2b4 .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/09/03 19:00 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ffcf9c5700e4 28811d0a .config console log report info [disk image] [vmlinux] ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/08/28 05:47 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ffcf9c5700e4 07177916 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/08/24 09:38 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ffcf9c5700e4 cea8b0f7 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/08/23 11:52 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ffcf9c5700e4 cea8b0f7 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/07/20 14:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 32f02a211b0a 88cb1383 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/07/14 06:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8affe37c525d 5d921b08 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/07/05 19:55 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90557fa89d3e bff65f44 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/07/05 09:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90557fa89d3e bff65f44 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/07/02 02:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90557fa89d3e 1434eec0 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/03/29 00:57 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ae085d7f9365 6bdac766 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/03/08 23:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 98d107b84614 9e8eaa75 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/02/21 19:06 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a5d847b0afd3 3cd800e4 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/02/01 21:38 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 554237f2bb62 c1c1631d .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/01/31 17:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 60c250a98d4c a491ad2d .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/01/18 09:40 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 455e73a07f6e 731a2d23 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/01/14 20:02 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 455e73a07f6e 53e00b45 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2022/01/14 02:37 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 455e73a07f6e b8d780ab .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/12/26 06:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ce1d37cb7697 6caa12e4 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/12/07 09:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d598c3c46ea6 0230ba3e .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/12/06 19:52 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing d598c3c46ea6 579a8754 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/12/03 23:33 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 76c4c95dac0d c7c20675 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/11/30 15:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 4d012040161c 80270552 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/11/17 20:27 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ba67723f9461 cafff8b6 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/11/15 15:47 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8ab774587903 75b04091 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/11/04 15:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a0548b26901f 4c1be0be .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/10/13 21:44 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing e27bea459d5e 5462d470 .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/10/08 09:35 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 2c52ad743fee efe0f24d .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/10/08 03:58 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 2c52ad743fee efe0f24d .config console log report info ci2-upstream-usb INFO: task hung in usb_deregister_dev
2021/01/09 20:51 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 841081d89d5a a6c52263 .config console 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 console log report ci2-upstream-usb
2019/08/11 00:40 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.