syzbot


INFO: task hung in usbdev_release

Status: auto-closed as invalid on 2021/02/21 22:17
Reported-by: syzbot+df12dacc8c0f1b1db1f6@syzkaller.appspotmail.com
First crash: 1278d, last: 1278d
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in usbdev_release (2) usb C error 60 12d 259d 0/26 upstream: reported C repro on 2023/08/09 15:47
upstream INFO: task hung in usbdev_release usb 20 858d 1265d 0/26 closed as invalid on 2022/02/07 19:19
linux-5.15 INFO: task hung in usbdev_release 1 58d 58d 0/3 upstream: reported on 2024/02/26 22:03
linux-6.1 INFO: task hung in usbdev_release 1 406d 406d 0/3 auto-obsoleted due to no activity on 2023/07/13 23:24
linux-4.19 INFO: task hung in usbdev_release (2) 10 534d 999d 0/1 auto-obsoleted due to no activity on 2023/03/08 04:55
linux-4.14 INFO: task hung in usbdev_release 2 1214d 1277d 0/1 auto-closed as invalid on 2021/04/27 06:36
linux-6.1 INFO: task hung in usbdev_release (2) origin:upstream C 6 4h23m 221d 0/3 upstream: reported C repro on 2023/09/16 19:39

Sample crash report:
vhci_hcd: vhci_device speed not set
sp0: Synchronizing with TNC
usb 9-1: new full-speed USB device number 2 using vhci_hcd
sp0: Synchronizing with TNC
Bluetooth: hci5: command 0x0406 tx timeout
INFO: task syz-executor.0:20203 blocked for more than 140 seconds.
      Not tainted 4.19.152-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0  D28648 20203   8115 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072
 device_lock include/linux/device.h:1173 [inline]
 usbdev_release+0x83/0x410 drivers/usb/core/devio.c:1049
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4177b1
Code: 00 31 c0 48 8b 4c 24 28 e9 b3 fe ff ff 31 f6 e9 53 fe ff ff 48 8b 5a 20 eb 03 48 8b 1b 48 85 db 74 29 8d 41 fe 39 43 58 0f 85 <5d> 01 00 00 8d 71 ff f0 0f b1 73 58 40 0f 94 c6 40 84 f6 0f 85 aa
RSP: 002b:00007ffe95a024f0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004177b1
RDX: 0000000000000000 RSI: 000000000000165f RDI: 0000000000000004
RBP: 0000000000000001 R08: 00000000b872965f R09: 00000000b8729663
R10: 00007ffe95a025d0 R11: 0000000000000293 R12: 000000000118c9a0
R13: 000000000118c9a0 R14: 00000000000003e8 R15: 000000000118bfd4
INFO: task syz-executor.1:20240 blocked for more than 140 seconds.
      Not tainted 4.19.152-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28856 20240   8117 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072
 device_lock include/linux/device.h:1173 [inline]
 usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007
 chrdev_open+0x266/0x770 fs/char_dev.c:423
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
 do_last fs/namei.c:3421 [inline]
 path_openat+0x793/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x417951
Code: Bad RIP value.
RSP: 002b:00007ff59e55e820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000417951
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007ff59e55e850
RBP: 000000000118bf60 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000118bf2c
R13: 00007fff3284973f R14: 00007ff59e55f9c0 R15: 000000000118bf2c
INFO: task syz-executor.4:20245 blocked for more than 140 seconds.
      Not tainted 4.19.152-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.4  D29496 20245   8123 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072
 device_lock include/linux/device.h:1173 [inline]
 usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007
 chrdev_open+0x266/0x770 fs/char_dev.c:423
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
 do_last fs/namei.c:3421 [inline]
 path_openat+0x793/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x417951
Code: Bad RIP value.
RSP: 002b:00007fa2e41f7820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000417951
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fa2e41f7850
RBP: 000000000118bf60 R08: 000000000000000f R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000293 R12: 000000000118bf2c
R13: 00007ffe5314bfff R14: 00007fa2e41f89c0 R15: 000000000118bf2c
INFO: task syz-executor.3:20248 blocked for more than 140 seconds.
      Not tainted 4.19.152-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D27640 20248   8121 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0x647/0x1260 kernel/locking/mutex.c:1072
 device_lock include/linux/device.h:1173 [inline]
 usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007
 chrdev_open+0x266/0x770 fs/char_dev.c:423
 do_dentry_open+0x4aa/0x1160 fs/open.c:796
 do_last fs/namei.c:3421 [inline]
 path_openat+0x793/0x2df0 fs/namei.c:3537
 do_filp_open+0x18c/0x3f0 fs/namei.c:3567
 do_sys_open+0x3b3/0x520 fs/open.c:1085
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x417951
Code: Bad RIP value.
RSP: 002b:00007fc5e149e820 EFLAGS: 00000293 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 0000000000417951
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00007fc5e149e850
RBP: 000000000118bf60 R08: 000000000000000f R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000293 R12: 000000000118bf2c
R13: 00007ffeb90ad83f R14: 00007fc5e149f9c0 R15: 000000000118bf2c

Showing all locks held in the system:
1 lock held by khungtaskd/1566:
 #0: 00000000eaf71a7f (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4440
5 locks held by kworker/1:4/9347:
 #0: 00000000a4eae4ef ((wq_completion)"usb_hub_wq"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2126
 #1: 000000008ec8838f ((work_completion)(&hub->events)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2130
 #2: 0000000047321a21 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline]
 #2: 0000000047321a21 (&dev->mutex){....}, at: hub_event+0x11b/0x43f0 drivers/usb/core/hub.c:5337
 #3: 0000000029ad8d48 (&port_dev->status_lock){+.+.}, at: usb_lock_port drivers/usb/core/hub.c:2977 [inline]
 #3: 0000000029ad8d48 (&port_dev->status_lock){+.+.}, at: hub_port_connect drivers/usb/core/hub.c:5019 [inline]
 #3: 0000000029ad8d48 (&port_dev->status_lock){+.+.}, at: hub_port_connect_change drivers/usb/core/hub.c:5203 [inline]
 #3: 0000000029ad8d48 (&port_dev->status_lock){+.+.}, at: port_event drivers/usb/core/hub.c:5311 [inline]
 #3: 0000000029ad8d48 (&port_dev->status_lock){+.+.}, at: hub_event+0x1ce3/0x43f0 drivers/usb/core/hub.c:5391
 #4: 000000004f1a0a9e (hcd->address0_mutex){+.+.}, at: hub_port_init+0x1b6/0x2fa0 drivers/usb/core/hub.c:4528
1 lock held by syz-executor.0/20203:
 #0: 0000000047321a21 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline]
 #0: 0000000047321a21 (&dev->mutex){....}, at: usbdev_release+0x83/0x410 drivers/usb/core/devio.c:1049
1 lock held by syz-executor.1/20240:
 #0: 0000000047321a21 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline]
 #0: 0000000047321a21 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007
1 lock held by syz-executor.4/20245:
 #0: 0000000047321a21 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline]
 #0: 0000000047321a21 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007
1 lock held by syz-executor.3/20248:
 #0: 0000000047321a21 (&dev->mutex){....}, at: device_lock include/linux/device.h:1173 [inline]
 #0: 0000000047321a21 (&dev->mutex){....}, at: usbdev_open+0x152/0x7f0 drivers/usb/core/devio.c:1007

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

NMI backtrace for cpu 0
CPU: 0 PID: 1566 Comm: khungtaskd Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2fe lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1a6/0x1eb lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
 watchdog+0x991/0xe60 kernel/hung_task.c:287
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 4.19.152-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rcu_read_unlock_sched_notrace include/linux/rcupdate.h:771 [inline]
RIP: 0010:trace_timer_cancel include/trace/events/timer.h:132 [inline]
RIP: 0010:debug_deactivate kernel/time/timer.c:780 [inline]
RIP: 0010:detach_timer kernel/time/timer.c:824 [inline]
RIP: 0010:detach_if_pending+0x34d/0x460 kernel/time/timer.c:843
Code: ff 31 ff 89 c5 89 c6 e8 11 23 0f 00 85 ed 74 1a e8 98 21 0f 00 0f b6 2d 30 be b8 09 31 ff 89 ee e8 b8 22 0f 00 40 84 ed 74 45 <e8> 7e 21 0f 00 65 ff 0d d7 33 ac 7e 40 0f 94 c5 31 ff 89 ee e8 9a
RSP: 0018:ffff8880b5a77b68 EFLAGS: 00000002
RAX: 0000000000000000 RBX: ffff8880b5a77cc0 RCX: ffffffff8155ab87
RDX: 0000000000000001 RSI: ffff8880b5a62280 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ba122d38
R13: 0000000000000001 R14: ffff8880b5a77cc8 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fecdaea3000 CR3: 00000000a16dd000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 try_to_del_timer_sync+0xaa/0x110 kernel/time/timer.c:1240
 del_timer_sync+0x1a4/0x270 kernel/time/timer.c:1305
 schedule_timeout+0x4d7/0xfe0 kernel/time/timer.c:1826
 rcu_gp_kthread+0xdad/0x21c0 kernel/rcu/tree.c:2202
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/10/24 22:16 linux-4.19.y ad326970d25c a1839e81 .config console log report info ci2-linux-4-19
* Struck through repros no longer work on HEAD.