INFO: task kworker/1:6:5171 blocked for more than 143 seconds.
Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:6 state:D stack:22992 pid:5171 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_timeout+0x276/0x2b0 kernel/time/timer.c:2143
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x1ce/0x5c0 kernel/sched/completion.c:106
proc_entry_rundown+0x1a5/0x1d0 fs/proc/inode.c:267
remove_proc_subtree+0x260/0x500 fs/proc/generic.c:770
proc_remove fs/proc/generic.c:793 [inline]
proc_remove+0x6a/0x90 fs/proc/generic.c:790
snd_info_disconnect+0x946/0xc20 sound/core/info.c:756
snd_info_disconnect sound/core/info.c:755 [inline]
snd_info_card_disconnect+0x138/0x240 sound/core/info.c:576
snd_card_disconnect.part.0+0x34c/0x710 sound/core/init.c:535
snd_card_disconnect+0x1f/0x30 sound/core/init.c:496
usb_audio_disconnect+0x339/0x800 sound/usb/card.c:959
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>
INFO: task syz-executor.3:5504 blocked for more than 144 seconds.
Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:27272 pid:5504 ppid:5123 flags:0x20004004
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
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa3b/0x1350 kernel/locking/mutex.c:747
snd_info_text_entry_open+0x99/0x310 sound/core/info.c:372
proc_reg_open+0x272/0x5f0 fs/proc/inode.c:532
do_dentry_open+0x6cc/0x13f0 fs/open.c:920
do_open fs/namei.c:3560 [inline]
path_openat+0x1baa/0x2750 fs/namei.c:3715
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_compat_sys_openat fs/open.c:1424 [inline]
__se_compat_sys_openat fs/open.c:1422 [inline]
__ia32_compat_sys_openat+0x143/0x1f0 fs/open.c:1422
do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
__do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178
do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:203
entry_SYSENTER_compat_after_hwframe+0x70/0x82
RIP: 0023:0xf7f5b579
RSP: 002b:00000000f7f145cc EFLAGS: 00000296 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 00000000200006c0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</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/4754:
#0: ffff88802bbdc098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by syz-executor.4/5124:
3 locks held by syz-executor.2/5125:
1 lock held by syz-executor.0/5126:
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:547 [inline]
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x90/0x120 kernel/sched/core.c:532
7 locks held by kworker/1:6/5171:
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888017296d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900053bfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2: ffff888147023190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#2: ffff888147023190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4e40 drivers/usb/core/hub.c:5739
#3: ffff888044f03190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#3: ffff888044f03190 (&dev->mutex){....}-{3:3}, at: usb_disconnect+0xff/0x8a0 drivers/usb/core/hub.c:2229
#4: ffff888045afb118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline]
#4: ffff888045afb118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1063 [inline]
#4: ffff888045afb118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xa4/0x610 drivers/base/dd.c:1260
#5: ffffffff8e06b728 (register_mutex#6){+.+.}-{3:3}, at: usb_audio_disconnect+0xe7/0x800 sound/usb/card.c:948
#6: ffffffff8dfeb748 (info_mutex){+.+.}-{3:3}, at: snd_info_card_disconnect+0x37/0x240 sound/core/info.c:572
2 locks held by kworker/u4:23/12938:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90005a5fda8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by kworker/0:2/25229:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900053dfda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
4 locks held by kworker/u4:1/26070:
4 locks held by udevd/5441:
#0: ffff8880350282f0 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xe3/0x12d0 fs/seq_file.c:182
#1: ffff88802b5fe088 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4b/0x450 fs/kernfs/file.c:154
#2: ffff88801dd8c008 (kn->active#27){.+.+}-{0:0}, at: kernfs_seq_start+0x75/0x450 fs/kernfs/file.c:155
#3: ffff888044f03190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:837 [inline]
#3: ffff888044f03190 (&dev->mutex){....}-{3:3}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor.3/5504:
#0: ffffffff8dfeb748 (info_mutex){+.+.}-{3:3}, at: snd_info_text_entry_open+0x99/0x310 sound/core/info.c:372
2 locks held by kworker/1:2/5553:
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:547 [inline]
#0: ffff8880b983c298 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x90/0x120 kernel/sched/core.c:532
#1: ffffc90006f07da8 ((work_completion)(&(&nsim_dev->trap_data->trap_report_dw)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by kworker/u4:0/12423:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900150d7da8 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by syz-executor.3/12486:
#0: ffff888033e58810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff888033e58810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x290 net/socket.c:652
#1: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989
2 locks held by syz-executor.5/12487:
#0: ffff888040b5e810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff888040b5e810 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x290 net/socket.c:652
#1: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#1: ffffffff8c7a08b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770 kernel/rcu/tree_exp.h:989
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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: 12938 Comm: kworker/u4:23 Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: phy7 ieee80211_iface_work
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:mark_lock.part.0+0xf6/0x1970 kernel/locking/lockdep.c:4613
Code: 66 81 e2 ff 1f 44 0f b7 f2 be 08 00 00 00 4c 89 f0 48 c1 e8 06 48 8d 3c c5 80 2b 4d 91 e8 c2 d1 6f 00 4c 0f a3 35 7a 09 e9 0f <0f> 83 cd 00 00 00 4b 8d 04 76 48 c1 e0 06 48 05 a0 2f 4d 91 48 8d
RSP: 0018:ffffc90005a5f980 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 1ffff92000b4bf37 RCX: ffffffff816421fe
RDX: fffffbfff229a590 RSI: 0000000000000008 RDI: ffffffff914d2c78
RBP: 0000000000000004 R08: 0000000000000000 R09: ffffffff914d2c7f
R10: fffffbfff229a58f R11: 0000000000000000 R12: ffff88807cba8a38
R13: 0000000000000002 R14: 00000000000007e4 R15: ffff88807cba8a58
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f7ea55b6 CR3: 000000004270b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
mark_lock kernel/locking/lockdep.c:4599 [inline]
mark_held_locks+0x9f/0xe0 kernel/locking/lockdep.c:4237
__trace_hardirqs_on_caller kernel/locking/lockdep.c:4255 [inline]
lockdep_hardirqs_on_prepare kernel/locking/lockdep.c:4322 [inline]
lockdep_hardirqs_on_prepare+0x139/0x410 kernel/locking/lockdep.c:4274
trace_hardirqs_on+0x36/0x40 kernel/trace/trace_preemptirq.c:61
__local_bh_enable_ip+0xa4/0x130 kernel/softirq.c:401
spin_unlock_bh include/linux/spinlock.h:395 [inline]
ieee80211_ibss_work+0x376/0x14a0 net/mac80211/ibss.c:1701
ieee80211_iface_work+0xbb9/0xd70 net/mac80211/iface.c:1659
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
</TASK>