INFO: task kworker/0:1:9 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00169-gc70793fb7632 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1 state:D
stack:22048 pid:9 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xc79/0x30a0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_timeout+0x278/0x2c0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e0/0x5f0 kernel/sched/completion.c:116
ath9k_hif_usb_disconnect+0xf7/0x3f0 drivers/net/wireless/ath/ath9k/hif_usb.c:1440
usb_unbind_interface+0x1dd/0x8d0 drivers/usb/core/driver.c:458
device_remove drivers/base/dd.c:569 [inline]
device_remove+0x11f/0x170 drivers/base/dd.c:561
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
bus_remove_device+0x22c/0x420 drivers/base/bus.c:574
device_del+0x39a/0xa50 drivers/base/core.c:3813
usb_disable_device+0x36c/0x7f0 drivers/usb/core/message.c:1416
usb_disconnect+0x2e1/0x910 drivers/usb/core/hub.c:2260
hub_port_connect drivers/usb/core/hub.c:5303 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5603 [inline]
port_event drivers/usb/core/hub.c:5763 [inline]
hub_event+0x1be0/0x4f40 drivers/usb/core/hub.c:5845
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
INFO: task syz-executor.0:9752 blocked for more than 150 seconds.
Not tainted 6.6.0-rc6-syzkaller-00169-gc70793fb7632 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27960 pid:9752 ppid:7678 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xc79/0x30a0 kernel/sched/core.c:6695
schedule+0xe7/0x1b0 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x969/0x1340 kernel/locking/mutex.c:747
usb_udc_uevent drivers/usb/gadget/udc/core.c:1866 [inline]
usb_udc_uevent+0x96/0x1a0 drivers/usb/gadget/udc/core.c:1855
dev_uevent+0x288/0x760 drivers/base/core.c:2590
kobject_uevent_env+0x623/0x1800 lib/kobject_uevent.c:557
gadget_unbind_driver+0x87/0x4d0 drivers/usb/gadget/udc/core.c:1649
device_remove+0xc8/0x170 drivers/base/dd.c:567
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1295
driver_detach+0xd8/0x1b0 drivers/base/dd.c:1358
bus_remove_driver+0x13b/0x2c0 drivers/base/bus.c:735
driver_unregister+0x76/0xb0 drivers/base/driver.c:274
usb_gadget_unregister_driver+0x49/0x60 drivers/usb/gadget/udc/core.c:1717
raw_release+0x1a1/0x2e0 drivers/usb/gadget/legacy/raw_gadget.c:462
__fput+0x3f7/0xa70 fs/file_table.c:384
task_work_run+0x14d/0x240 kernel/task_work.c:180
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0xa92/0x2990 kernel/exit.c:874
do_group_exit+0xd4/0x2a0 kernel/exit.c:1024
get_signal+0x23c3/0x27a0 kernel/signal.c:2892
arch_do_signal_or_restart+0x90/0x7f0 arch/x86/kernel/signal.c:309
exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
exit_to_user_mode_prepare+0x116/0x1f0 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x1d/0x60 kernel/entry/common.c:296
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f171f4f084b
RSP: 002b:00007f171e870fa0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 00007f171f4f084b
RDX: 00007f171e872070 RSI: 0000000080085502 RDI: 0000000000000003
RBP: 00007f171e872070 R08: 0000000000000080 R09: 00007f171e871068
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 0000000000000008 R15: 00007f171f5447e0
</TASK>
Showing all locks held in the system:
5 locks held by kworker/0:1/9:
3 locks held by kworker/1:0/22:
#0: ffff888100070d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x787/0x15c0 kernel/workqueue.c:2605
#1: ffffc9000017fd80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7e9/0x15c0 kernel/workqueue.c:2606
#2: ffff888105ff9190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#2: ffff888105ff9190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1163 [inline]
#2: ffff888105ff9190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3b1/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1296
1 lock held by khungtaskd/29:
#0: ffffffff87eac860 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff87eac860 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff87eac860 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
2 locks held by getty/2446:
#0: ffff88810b3f20a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
1 lock held by syz-executor.5/2505:
#0: ffffffff87eb8138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff87eb8138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x404/0x7e0 kernel/rcu/tree_exp.h:992
2 locks held by kworker/1:3/5259:
5 locks held by kworker/0:6/5358:
2 locks held by kworker/1:6/5486:
3 locks held by kworker/1:8/5624:
1 lock held by syz-executor.2/9754:
2 locks held by syz-executor.4/9748:
2 locks held by syz-executor.0/9752:
#0: ffff888105b60d78 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:992 [inline]
#0: ffff888105b60d78 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#0: ffff888105b60d78 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1292
#1: ffffffff88a2e8e8 (udc_lock){+.+.}-{3:3}, at: usb_udc_uevent drivers/usb/gadget/udc/core.c:1866 [inline]
#1: ffffffff88a2e8e8 (udc_lock){+.+.}-{3:3}, at: usb_udc_uevent+0x96/0x1a0 drivers/usb/gadget/udc/core.c:1855
1 lock held by syz-executor.3/9756:
#0: ffffffff87eb8138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff87eb8138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x404/0x7e0 kernel/rcu/tree_exp.h:992
5 locks held by syz-executor.2/9758:
#0: ffff8881023143e8 (sb_writers#10){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637
#1: ffff88811e143888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325
#2: ffffffff87ef67e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:369 [inline]
#2: ffffffff87ef67e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0x136/0x570 kernel/cgroup/cgroup.c:1645
#3: ffffffff87d59290 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2382 [inline]
#3: ffffffff87d59290 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x18f/0x660 kernel/cgroup/cgroup.c:2886
#4: ffffffff87ef65b0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2384 [inline]
#4: ffffffff87ef65b0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_lock kernel/cgroup/cgroup.c:2380 [inline]
#4: ffffffff87ef65b0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x19b/0x660 kernel/cgroup/cgroup.c:2886
3 locks held by syz-executor.3/9817:
#0: ffff8881023143e8 (sb_writers#10){.+.+}-{0:0}, at: ksys_write+0x12f/0x250 fs/read_write.c:637
#1: ffff88811b1ea488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x281/0x610 fs/kernfs/file.c:325
#2: ffffffff87ef67e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:369 [inline]
#2: ffffffff87ef67e8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_kn_lock_live+0x136/0x570 kernel/cgroup/cgroup.c:1645
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc6-syzkaller-00169-gc70793fb7632 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x26c/0x2d0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5259 Comm: kworker/1:3 Not tainted 6.6.0-rc6-syzkaller-00169-gc70793fb7632 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_power_efficient gc_worker
RIP: 0010:check_preemption_disabled+0x2a/0xe0 lib/smp_processor_id.c:19
Code: 41 54 55 53 48 83 ec 08 65 8b 1d ad 3d bc 79 65 8b 05 a2 3d bc 79 a9 ff ff ff 7f 74 0b 48 83 c4 08 89 d8 5b 5d 41 5c c3 9c 58 <f6> c4 02 74 ee 65 48 8b 04 25 00 ab 03 00 f6 40 2f 04 48 89 fd 74
RSP: 0018:ffffc90001e2fba0 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000001 RCX: 1ffffffff16e34d4
RDX: 0000000000000007 RSI: ffffffff8687cc80 RDI: ffffffff86a64d60
RBP: 84a7b93209959da4 R08: 0000000000000000 R09: fffffbfff16de344
R10: ffffffff8b6f1a27 R11: 0000000000000000 R12: 000000000001855d
R13: dffffc0000000000 R14: 0000000000030ab9 R15: 0000000000040000
FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fd27000 CR3: 0000000007c9b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<NMI>
</NMI>
<TASK>
lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4359 [inline]
lockdep_hardirqs_on_prepare+0x17f/0x410 kernel/locking/lockdep.c:4310
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:339 [inline]
gc_worker+0xe96/0x17d0 net/netfilter/nf_conntrack_core.c:1490
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
</TASK>