INFO: task kworker/1:5:7185 blocked for more than 143 seconds.
Not tainted 5.13.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5 state:D stack:22320 pid: 7185 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:4339 [inline]
__schedule+0x920/0x1f70 kernel/sched/core.c:5147
schedule+0xcb/0x270 kernel/sched/core.c:5226
schedule_timeout+0x1db/0x250 kernel/time/timer.c:1868
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+0x168/0x270 kernel/sched/completion.c:138
flush_workqueue+0x3ff/0x13e0 kernel/workqueue.c:2838
flush_scheduled_work include/linux/workqueue.h:597 [inline]
ath6kl_usb_flush_all drivers/net/wireless/ath/ath6kl/usb.c:476 [inline]
ath6kl_usb_destroy+0xc6/0x290 drivers/net/wireless/ath/ath6kl/usb.c:609
ath6kl_usb_probe+0xc7e/0x1200 drivers/net/wireless/ath/ath6kl/usb.c:1166
usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
really_probe+0x291/0xf60 drivers/base/dd.c:576
driver_probe_device+0x298/0x410 drivers/base/dd.c:763
__device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
__device_attach+0x228/0x4b0 drivers/base/dd.c:938
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0xbe0/0x2100 drivers/base/core.c:3319
usb_set_configuration+0x113f/0x1910 drivers/usb/core/message.c:2164
usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
really_probe+0x291/0xf60 drivers/base/dd.c:576
driver_probe_device+0x298/0x410 drivers/base/dd.c:763
__device_attach_driver+0x203/0x2c0 drivers/base/dd.c:870
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431
__device_attach+0x228/0x4b0 drivers/base/dd.c:938
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491
device_add+0xbe0/0x2100 drivers/base/core.c:3319
usb_new_device.cold+0x721/0x1058 drivers/usb/core/hub.c:2556
hub_port_connect drivers/usb/core/hub.c:5276 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5416 [inline]
port_event drivers/usb/core/hub.c:5562 [inline]
hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5644
process_one_work+0x98d/0x1580 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x38c/0x460 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
INFO: task kworker/1:8:25277 blocked for more than 143 seconds.
Not tainted 5.13.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8 state:D stack:19232 pid:25277 ppid: 2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
context_switch kernel/sched/core.c:4339 [inline]
__schedule+0x920/0x1f70 kernel/sched/core.c:5147
schedule+0xcb/0x270 kernel/sched/core.c:5226
schedule_preempt_disabled+0xc/0x20 kernel/sched/core.c:5285
__mutex_lock_common kernel/locking/mutex.c:1026 [inline]
__mutex_lock+0x7ef/0x10e0 kernel/locking/mutex.c:1096
device_lock include/linux/device.h:744 [inline]
ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1129 [inline]
ath9k_hif_usb_firmware_cb+0x3ac/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1262
request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1081
process_one_work+0x98d/0x1580 kernel/workqueue.c:2275
worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
kthread+0x38c/0x460 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Showing all locks held in the system:
5 locks held by kworker/0:1/7:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc9000007fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f3e8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f3e8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
#3: ffff88811c0ec220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#3: ffff88811c0ec220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
#4: ffff888118e5d1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#4: ffff888118e5d1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
1 lock held by khungtaskd/1267:
#0: ffffffff87a7cea0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x269 kernel/locking/lockdep.c:6333
1 lock held by in:imklog/4280:
2 locks held by agetty/4282:
#0: ffff8881180d9098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc9000052b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
2 locks held by agetty/4283:
#0: ffff888117bff098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc9000054b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
2 locks held by agetty/4289:
#0: ffff8881180d8098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc9000050b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
7 locks held by kworker/1:4/7117:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc900045d7da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f290220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f290220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
#3: ffff88813ab6f220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#3: ffff88813ab6f220 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x791 drivers/usb/core/hub.c:2210
#4: ffff8881171481a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#4: ffff8881171481a8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1001 [inline]
#4: ffff8881171481a8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal drivers/base/dd.c:1209 [inline]
#4: ffff8881171481a8 (&dev->mutex){....}-{3:3}, at: device_release_driver+0x1c/0x40 drivers/base/dd.c:1235
#5: ffffffff8851d048 (input_mutex){+.+.}-{3:3}, at: __input_unregister_device+0x16d/0x470 drivers/input/input.c:2186
#6: ffffffff87a837a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#6: ffffffff87a837a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x521/0x640 kernel/rcu/tree_exp.h:837
5 locks held by kworker/1:5/7185:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc900046e7da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f320220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f320220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
#3:
ffff8881129d7220
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
(&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
#4: ffff88814be421a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#4: ffff88814be421a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
3 locks held by kworker/1:8/25277:
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888100064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc9001321fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f3e8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f3e8220 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1129 [inline]
#2: ffff88810f3e8220 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3ac/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1262
2 locks held by agetty/10539:
#0: ffff888116c55098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc9000017b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
2 locks held by agetty/19363:
#0:
ffff88811415e098
(&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc9000019b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
2 locks held by kworker/1:1/4192:
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888100066538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc90001d37da8 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
5 locks held by kworker/1:3/19515:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc900003efda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2:
ffff88810f368220
(&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
(&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
#3: ffff888119f30220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#3: ffff888119f30220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
#4: ffff88813e50f1a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#4: ffff88813e50f1a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4b0 drivers/base/dd.c:913
3 locks held by kworker/1:2/1285:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc90012317da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f440220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f440220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
2 locks held by agetty/12247:
#0: ffff88810930b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:267
#1: ffffc900001eb2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xd5b/0x12f0 drivers/tty/n_tty.c:2179
6 locks held by kworker/1:0/17424:
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline]
#0: ffff888109ec5538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x1580 kernel/workqueue.c:2246
#1: ffffc9001403fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x1580 kernel/workqueue.c:2250
#2: ffff88810f3b0220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:744 [inline]
#2: ffff88810f3b0220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5590
#3: ffff88810f3b3570 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3079 [inline]
#3: ffff88810f3b3570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5207 [inline]
#3: ffff88810f3b3570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5416 [inline]
#3: ffff88810f3b3570 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5562 [inline]
#3: ffff88810f3b3570 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5644
#4: ffff88810f2b9168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b9/0x2e40 drivers/usb/core/hub.c:4631
#5: ffffffff883584f0 (ehci_cf_port_reset_rwsem){.+.+}-{3:3}, at: hub_port_reset+0x191/0x1bc0 drivers/usb/core/hub.c:2941
1 lock held by ifupdown-hotplu/23083:
#0: ffff8881f6933358 (&rq->lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1334 [inline]
#0: ffff8881f6933358 (&rq->lock){-.-.}-{2:2}, at: __schedule+0x235/0x1f70 kernel/sched/core.c:5061
1 lock held by grep/23085:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1267 Comm: khungtaskd Not tainted 5.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x143/0x1db lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x46/0xe0 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1da/0x200 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:209 [inline]
watchdog+0xd32/0xf70 kernel/hung_task.c:294
kthread+0x38c/0x460 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23074 Comm: systemd-udevd Not tainted 5.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_kcov_mode+0x2c/0x40 kernel/kcov.c:174
Code: 05 99 e5 c0 7e 89 c2 81 e2 00 01 00 00 a9 00 01 ff 00 74 10 31 c0 85 d2 74 15 8b 96 4c 14 00 00 85 d2 74 0b 8b 86 28 14 00 00 <39> f8 0f 94 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 31 c0
RSP: 0018:ffffc90005c1f850 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 000000000000000e RCX: ffff888110908000
RDX: 0000000000000000 RSI: ffff888110908000 RDI: 0000000000000003
RBP: ffff888108b88480 R08: 0000000000000000 R09: 000000000000000e
R10: ffffffff81df373a R11: 0000000000000010 R12: 0000000000000020
R13: 0000000000000315 R14: dffffc0000000000 R15: 0000000000000000
FS: 00007fc364faf8c0(0000) GS:ffff8881f6900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc363d79930 CR3: 000000011700f000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
write_comp_data kernel/kcov.c:218 [inline]
__sanitizer_cov_trace_const_cmp1+0x22/0x80 kernel/kcov.c:270
tomoyo_domain_quota_is_ok+0x32a/0x550 security/tomoyo/util.c:1092
tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089
tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
tomoyo_path_permission security/tomoyo/file.c:587 [inline]
tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
tomoyo_path_perm+0x2f0/0x400 security/tomoyo/file.c:838
security_inode_getattr+0xcf/0x140 security/security.c:1332
vfs_getattr fs/stat.c:139 [inline]
vfs_statx+0x164/0x390 fs/stat.c:207
vfs_fstatat fs/stat.c:225 [inline]
vfs_lstat include/linux/fs.h:3384 [inline]
__do_sys_newlstat+0x91/0x110 fs/stat.c:380
do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc363e21335
Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89
RSP: 002b:00007fffd085de48 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 000055a1bb16c440 RCX: 00007fc363e21335
RDX: 00007fffd085de80 RSI: 00007fffd085de80 RDI: 000055a1bb16b440
RBP: 00007fffd085df40 R08: 00007fc3640e0198 R09: 0000000000001010
R10: 0000000000000040 R11: 0000000000000246 R12: 000055a1bb16b440
R13: 000055a1bb16b461 R14: 000055a1bb167096 R15: 000055a1bb1670a1