INFO: task kworker/u4:4:68 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:4 state:D stack:22672 pid:68 ppid:2 flags:0x00004000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2144 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x2c7/0x5a0 kernel/sched/completion.c:138 __synchronize_srcu+0x2b9/0x350 kernel/rcu/srcutree.c:1243 fsnotify_mark_destroy_workfn+0x106/0x2f0 fs/notify/mark.c:924 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:6:4321 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:6 state:D stack:23504 pid:4321 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 exp_funnel_lock kernel/rcu/tree_exp.h:314 [inline] synchronize_rcu_expedited+0x7ad/0x890 kernel/rcu/tree_exp.h:962 synchronize_rcu+0x128/0x3f0 kernel/rcu/tree.c:3580 lockdep_unregister_key+0x4d2/0x550 kernel/locking/lockdep.c:6374 wq_unregister_lockdep kernel/workqueue.c:3500 [inline] pwq_unbound_release_workfn+0x262/0x2b0 kernel/workqueue.c:3738 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:7:4349 blocked for more than 144 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:7 state:D stack:23920 pid:4349 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 exp_funnel_lock kernel/rcu/tree_exp.h:314 [inline] synchronize_rcu_expedited+0x7ad/0x890 kernel/rcu/tree_exp.h:962 synchronize_rcu+0x128/0x3f0 kernel/rcu/tree.c:3580 lockdep_unregister_key+0x4d2/0x550 kernel/locking/lockdep.c:6374 wq_unregister_lockdep kernel/workqueue.c:3500 [inline] pwq_unbound_release_workfn+0x262/0x2b0 kernel/workqueue.c:3738 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task kworker/1:11:11053 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:11 state:D stack:20624 pid:11053 ppid:2 flags:0x00004000 Workqueue: events pwq_unbound_release_workfn Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 exp_funnel_lock kernel/rcu/tree_exp.h:314 [inline] synchronize_rcu_expedited+0x7ad/0x890 kernel/rcu/tree_exp.h:962 synchronize_rcu+0x128/0x3f0 kernel/rcu/tree.c:3580 lockdep_unregister_key+0x4d2/0x550 kernel/locking/lockdep.c:6374 wq_unregister_lockdep kernel/workqueue.c:3500 [inline] pwq_unbound_release_workfn+0x262/0x2b0 kernel/workqueue.c:3738 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor:12881 blocked for more than 145 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:22608 pid:12881 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 exp_funnel_lock kernel/rcu/tree_exp.h:314 [inline] synchronize_rcu_expedited+0x7ad/0x890 kernel/rcu/tree_exp.h:962 namespace_unlock+0x23f/0x430 fs/namespace.c:1502 do_umount fs/namespace.c:1726 [inline] path_umount+0xf19/0xf90 fs/namespace.c:1809 ksys_umount fs/namespace.c:1832 [inline] __do_sys_umount fs/namespace.c:1837 [inline] __se_sys_umount fs/namespace.c:1835 [inline] __x64_sys_umount+0x12d/0x170 fs/namespace.c:1835 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fa21319d9d7 RSP: 002b:00007ffdb34f4d38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 00007fa213231f90 RCX: 00007fa21319d9d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdb34f4df0 RBP: 00007ffdb34f4df0 R08: 00007ffdb34f5df0 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb34f5e80 R13: 00007fa213231f90 R14: 000000000019c04a R15: 00007ffdb34f5ec0 INFO: task kworker/u4:1:13475 blocked for more than 146 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/u4:1 state:D stack:23152 pid:13475 ppid:2 flags:0x00004000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2144 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x2c7/0x5a0 kernel/sched/completion.c:138 __synchronize_srcu+0x2b9/0x350 kernel/rcu/srcutree.c:1243 fsnotify_connector_destroy_workfn+0x40/0xa0 fs/notify/mark.c:234 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 INFO: task syz-executor:16053 blocked for more than 146 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor state:D stack:21520 pid:16053 ppid:1 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 synchronize_rcu_expedited+0x6e6/0x890 kernel/rcu/tree_exp.h:977 namespace_unlock+0x23f/0x430 fs/namespace.c:1502 do_umount fs/namespace.c:1726 [inline] path_umount+0xf19/0xf90 fs/namespace.c:1809 ksys_umount fs/namespace.c:1832 [inline] __do_sys_umount fs/namespace.c:1837 [inline] __se_sys_umount fs/namespace.c:1835 [inline] __x64_sys_umount+0x12d/0x170 fs/namespace.c:1835 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb44739d9d7 RSP: 002b:00007ffcfe1ea578 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 00007fb447431f90 RCX: 00007fb44739d9d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcfe1ea630 RBP: 00007ffcfe1ea630 R08: 00007ffcfe1eb630 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcfe1eb6c0 R13: 00007fb447431f90 R14: 000000000019ba0d R15: 00007ffcfe1eb700 INFO: task udevd:16315 blocked for more than 146 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:udevd state:D stack:24304 pid:16315 ppid:3637 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x562/0xaf0 kernel/locking/mutex.c:747 device_lock include/linux/device.h:840 [inline] uevent_show+0x16c/0x320 drivers/base/core.c:2669 dev_attr_show+0x50/0xb0 drivers/base/core.c:2372 sysfs_kf_seq_show+0x349/0x4b0 fs/sysfs/file.c:59 seq_read_iter+0x49b/0xd50 fs/seq_file.c:230 call_read_iter include/linux/fs.h:2259 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x4a7/0xa00 fs/read_write.c:470 ksys_read+0x14c/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f9297aa7407 RSP: 002b:00007ffd5f2762e0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f9298184880 RCX: 00007f9297aa7407 RDX: 0000000000001000 RSI: 000055ddad500770 RDI: 0000000000000008 RBP: 00007f9297befff0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000000000000000a R13: 00007f9297befea0 R14: 0000000000000000 R15: 000055ddad4f8c20 INFO: task syz.7.2484:16777 blocked for more than 147 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.7.2484 state:D stack:24592 pid:16777 ppid:6832 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6697 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0x562/0xaf0 kernel/locking/mutex.c:747 exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962 namespace_unlock+0x23f/0x430 fs/namespace.c:1502 dissolve_on_fput+0x103/0x130 fs/namespace.c:1980 __fput+0x7b6/0x920 fs/file_table.c:330 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f821cd9c799 RSP: 002b:00007ffdd1168818 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffdd1168900 RCX: 00007f821cd9c799 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 000000000019b5a1 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b2e620000 R11: 0000000000000246 R12: 00007ffdd1168940 R13: 00007f821d015fac R14: 000000000019be43 R15: 00007f821d015fa0 INFO: task syz.1.2487:16790 blocked for more than 147 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.1.2487 state:D stack:27856 pid:16790 ppid:10531 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562 schedule+0xb9/0x180 kernel/sched/core.c:6638 schedule_timeout+0xbd/0x2d0 kernel/time/timer.c:2144 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common kernel/sched/completion.c:106 [inline] wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x2c7/0x5a0 kernel/sched/completion.c:138 vhost_dev_flush+0x1dc/0x240 drivers/vhost/vhost.c:243 vhost_attach_cgroups drivers/vhost/vhost.c:533 [inline] vhost_dev_set_owner+0x7f9/0xa60 drivers/vhost/vhost.c:600 vhost_dev_ioctl+0xa5/0xee0 drivers/vhost/vhost.c:1776 vhost_vsock_dev_ioctl+0x23a/0xe50 drivers/vhost/vsock.c:871 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7ffa3319c799 RSP: 002b:00007ffa340c8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffa33415fa0 RCX: 00007ffa3319c799 RDX: 0000000000000000 RSI: 000000000000af01 RDI: 0000000000000003 RBP: 00007ffa33232bd9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffa33416038 R14: 00007ffa33415fa0 R15: 00007fff9485f718 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cb2dfb0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cb2e7d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/28: #0: ffffffff8cb2d620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8cb2d620 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8cb2d620 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by kworker/u4:4/68: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900020afd00 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 1 lock held by dhcpcd/3932: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 2 locks held by getty/4025: #0: ffff88802ff36098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x429/0x1390 drivers/tty/n_tty.c:2198 4 locks held by kworker/u5:5/4276: #0: ffff8880784e7138 ((wq_completion)hci4#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90003db7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff8880974d8078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 3 locks held by kworker/1:4/4310: #0: ffff88802f290138 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90003f47d00 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x15/0x30 net/ipv6/addrconf.c:4672 2 locks held by kworker/1:6/4321: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90003f97d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 2 locks held by kworker/1:7/4349: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90004057d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 3 locks held by syz-executor/10531: #0: ffff8880777810b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:508 [inline] #0: ffff8880777810b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x1fa/0x4f0 net/bluetooth/hci_core.c:2705 #1: ffff888077780078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x458/0xf40 net/bluetooth/hci_sync.c:5233 #2: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1826 [inline] #2: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xac/0x290 net/bluetooth/hci_conn.c:2504 2 locks held by kworker/1:11/11053: #0: ffff888017470938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90004237d00 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 4 locks held by kworker/u5:0/12939: #0: ffff888054522138 ((wq_completion)hci9#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900033c7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88809c520078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 2 locks held by kworker/u4:1/13475: #0: ffff888017479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90003347d00 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 5 locks held by kworker/0:11/13906: 1 lock held by syz-executor/16053: #0: ffffffff8cb332f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline] #0: ffffffff8cb332f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x2ec/0x890 kernel/rcu/tree_exp.h:962 4 locks held by kworker/u5:1/16056: #0: ffff88805618f138 ((wq_completion)hci7#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90003207d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff888077ad0078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 4 locks held by udevd/16315: #0: ffff8880596601c8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xad/0xd50 fs/seq_file.c:182 #1: ffff888055e8ec88 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x58/0x410 fs/kernfs/file.c:172 #2: ffff88805480f918 (kn->active#5){++++}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline] #2: ffff88805480f918 (kn->active#5){++++}-{0:0}, at: kernfs_seq_start+0xae/0x410 fs/kernfs/file.c:173 #3: ffff888054c44190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:840 [inline] #3: ffff888054c44190 (&dev->mutex){....}-{3:3}, at: uevent_show+0x16c/0x320 drivers/base/core.c:2669 1 lock held by syz.7.2484/16777: #0: ffffffff8cb332f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline] #0: ffffffff8cb332f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3c0/0x890 kernel/rcu/tree_exp.h:962 1 lock held by syz.1.2487/16790: #0: ffff888079e00070 (&dev->mutex#5){+.+.}-{3:3}, at: vhost_vsock_dev_ioctl+0x22c/0xe50 drivers/vhost/vsock.c:870 1 lock held by syz.1.2487/16795: #0: ffff888079e00070 (&dev->mutex#5){+.+.}-{3:3}, at: vhost_vsock_dev_ioctl+0x22c/0xe50 drivers/vhost/vsock.c:870 1 lock held by syz.1.2487/16796: #0: ffff888079e00070 (&dev->mutex#5){+.+.}-{3:3}, at: vhost_vsock_set_features drivers/vhost/vsock.c:799 [inline] #0: ffff888079e00070 (&dev->mutex#5){+.+.}-{3:3}, at: vhost_vsock_dev_ioctl+0x471/0xe50 drivers/vhost/vsock.c:856 1 lock held by syz.1.2487/16799: #0: ffff888079e00070 (&dev->mutex#5){+.+.}-{3:3}, at: vhost_vsock_dev_ioctl+0x391/0xe50 drivers/vhost/vsock.c:-1 3 locks held by vhost-16790/16792: #0: ffffffff8cb56068 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:442 [inline] #0: ffffffff8cb56068 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x22/0xe0 kernel/cgroup/cgroup-v1.c:61 #1: ffffffff8c9c9ef0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock+0xd/0x30 kernel/cgroup/cgroup.c:2476 #2: ffffffff8cb56250 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x2c/0xe0 kernel/cgroup/cgroup-v1.c:62 1 lock held by syz.8.2492/16820: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: ppp_release+0x86/0x1f0 drivers/net/ppp/ppp_generic.c:418 1 lock held by kvm-nx-lpage-re/16825: #0: ffffffff8cb56068 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:442 [inline] #0: ffffffff8cb56068 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x22/0xe0 kernel/cgroup/cgroup-v1.c:61 1 lock held by syz-executor/16841: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/16845: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/16847: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:2/16848: #0: ffff888027cce138 ((wq_completion)hci8#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc9000563fd00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808ed34078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16852: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:3/16853: #0: ffff8880786a5938 ((wq_completion)hci12#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90004077d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808e51c078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16855: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:4/16856: #0: ffff888055232138 ((wq_completion)hci10#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005667d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff888043abc078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16863: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:6/16865: #0: ffff88807449b138 ((wq_completion)hci15#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005747d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff888031b0c078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16866: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:7/16867: #0: ffff888028fc3938 ((wq_completion)hci13#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005777d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808e520078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16868: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:8/16869: #0: ffff8880548bc138 ((wq_completion)hci14#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005787d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808e524078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16872: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:9/16874: #0: ffff8880778e7938 ((wq_completion)hci17#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005737d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808b190078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 4 locks held by kworker/u5:10/16875: #0: ffff888055a0d938 ((wq_completion)hci11#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900057c7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808e518078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16876: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/16879: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 1 lock held by syz-executor/16886: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:12/16887: #0: ffff888073c37938 ((wq_completion)hci16#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc90005867d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88805cb58078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16889: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:13/16891: #0: ffff888076982138 ((wq_completion)hci19#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900058b7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808b198078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16892: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 4 locks held by kworker/u5:14/16894: #0: ffff88807cde6138 ((wq_completion)hci18#2){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #1: ffffc900058d7d00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x7b0/0x1160 kernel/workqueue.c:2267 #2: ffff88808b194078 (&hdev->lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x91/0xa40 net/bluetooth/hci_event.c:3763 #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_connect_cfm include/net/bluetooth/hci_core.h:1811 [inline] #3: ffffffff8dea4a28 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_remote_features_evt+0x604/0xa40 net/bluetooth/hci_event.c:3796 1 lock held by syz-executor/16895: #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline] #0: ffffffff8dd469e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x824/0xfc0 net/core/rtnetlink.c:6147 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3e6/0x460 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 13906 Comm: kworker/0:11 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:preempt_count_sub+0x3f/0x160 kernel/sched/core.c:5743 Code: e8 03 0f b6 04 18 84 c0 0f 85 bd 00 00 00 83 3d 96 e6 66 15 00 75 25 65 8b 05 95 84 a9 7e 89 c1 81 e1 ff ff ff 7f 39 cf 7f 25 <81> ff ff 00 00 00 0f 93 c1 84 c0 0f 95 c0 08 c8 74 53 65 8b 05 70 RSP: 0018:ffffc9000491eb88 EFLAGS: 00000246 RAX: 0000000080000001 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8a8c1220 RDI: 0000000000000001 RBP: ffffc9000491ec38 R08: ffffffff90af62af R09: 1ffffffff215ec55 R10: dffffc0000000000 R11: fffffbfff215ec56 R12: dffffc0000000000 R13: ffff888088468a00 R14: ffff88804c492868 R15: 1ffff92000923d74 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fda8c063810 CR3: 000000007bfe8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock_irqrestore+0xc1/0x120 kernel/locking/spinlock.c:194 ath6kl_usb_post_recv_transfers+0x3c0/0x6f0 drivers/net/wireless/ath/ath6kl/usb.c:449 ath6kl_usb_start_recv_pipes drivers/net/wireless/ath/ath6kl/usb.c:498 [inline] hif_start drivers/net/wireless/ath/ath6kl/usb.c:703 [inline] ath6kl_usb_power_on+0x66/0x280 drivers/net/wireless/ath/ath6kl/usb.c:1062 ath6kl_hif_power_on drivers/net/wireless/ath/ath6kl/hif-ops.h:136 [inline] ath6kl_core_init+0x1d6/0x1090 drivers/net/wireless/ath/ath6kl/core.c:97 ath6kl_usb_probe+0x144a/0x1540 drivers/net/wireless/ath/ath6kl/usb.c:1168 usb_probe_interface+0x5c5/0xb20 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2aa/0xc70 drivers/base/dd.c:639 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:785 driver_probe_device+0x4f/0x420 drivers/base/dd.c:815 __device_attach_driver+0x2c6/0x510 drivers/base/dd.c:943 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429 __device_attach+0x2a8/0x480 drivers/base/dd.c:1015 bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489 device_add+0xa00/0xfb0 drivers/base/core.c:3697 usb_set_configuration+0x1991/0x1fd0 drivers/usb/core/message.c:2165 usb_generic_driver_probe+0x89/0x150 drivers/usb/core/generic.c:238 usb_probe_device+0x139/0x270 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2aa/0xc70 drivers/base/dd.c:639 __driver_probe_device+0x18c/0x330 drivers/base/dd.c:785 driver_probe_device+0x4f/0x420 drivers/base/dd.c:815 __device_attach_driver+0x2c6/0x510 drivers/base/dd.c:943 bus_for_each_drv+0x184/0x210 drivers/base/bus.c:429 __device_attach+0x2a8/0x480 drivers/base/dd.c:1015 bus_probe_device+0xbc/0x1e0 drivers/base/bus.c:489 device_add+0xa00/0xfb0 drivers/base/core.c:3697 usb_new_device+0xd66/0x1650 drivers/usb/core/hub.c:2659 hub_port_connect drivers/usb/core/hub.c:5517 [inline] hub_port_connect_change drivers/usb/core/hub.c:5657 [inline] port_event drivers/usb/core/hub.c:5817 [inline] hub_event+0x2dcf/0x5560 drivers/usb/core/hub.c:5899 process_one_work+0x8a2/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1270 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 vkms_vblank_simulate: vblank timer overrun