INFO: task kworker/0:2:935 blocked for more than 143 seconds.
Not tainted 6.1.53-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D stack:25056 pid:935 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x132c/0x4330 kernel/sched/core.c:6554
schedule+0xbf/0x180 kernel/sched/core.c:6630
usb_kill_urb+0x1c5/0x300 drivers/usb/core/urb.c:728
usb_start_wait_urb+0x1ac/0x510 drivers/usb/core/message.c:64
usb_internal_control_msg drivers/usb/core/message.c:102 [inline]
usb_control_msg+0x2ad/0x4c0 drivers/usb/core/message.c:153
get_bMaxPacketSize0 drivers/usb/core/hub.c:4697 [inline]
hub_port_init+0x1190/0x27e0 drivers/usb/core/hub.c:4965
hub_port_connect drivers/usb/core/hub.c:5344 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5555 [inline]
port_event drivers/usb/core/hub.c:5711 [inline]
hub_event+0x2b31/0x5710 drivers/usb/core/hub.c:5793
process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2292
worker_thread+0xa5f/0x1210 kernel/workqueue.c:2439
kthread+0x26e/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d12a1b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:516
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d12a9b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:516
1 lock held by khungtaskd/28:
#0: ffffffff8d129fe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
5 locks held by kworker/0:2/935:
#0: ffff88801827a538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x77a/0x11f0
#1: ffffc900049c7d20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7bd/0x11f0 kernel/workqueue.c:2267
#2: ffff888145709190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:836 [inline]
#2: ffff888145709190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x5710 drivers/usb/core/hub.c:5739
#3: ffff88814570c4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3110 [inline]
#3: ffff88814570c4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5311 [inline]
#3: ffff88814570c4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5555 [inline]
#3: ffff88814570c4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
#3: ffff88814570c4f8 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2471/0x5710 drivers/usb/core/hub.c:5793
#4: ffff88814536d168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5312 [inline]
#4: ffff88814536d168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5555 [inline]
#4: ffff88814536d168 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5711 [inline]
#4: ffff88814536d168 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x249e/0x5710 drivers/usb/core/hub.c:5793
2 locks held by getty/3310:
#0: ffff888028c37098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2188
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.53-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b0/0x3f0 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+0xf18/0xf60 kernel/hung_task.c:377
kthread+0x26e/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 98 Comm: kworker/u4:4 Not tainted 6.1.53-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:insn_get_immediate+0x5c/0x1390 arch/x86/lib/insn.c:631
Code: c0 0f 85 05 0d 00 00 41 0f b6 5d 00 31 ed 31 ff 89 de e8 37 53 06 f7 85 db 74 0a e8 ce 50 06 f7 e9 76 0c 00 00 49 8d 6c 24 34 <48> 89 e8 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 34 0d 00 00 0f b6
RSP: 0018:ffffc900015c7880 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888013f75940
RDX: ffff888013f75940 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900015c79b4 R08: ffffffff8a83c359 R09: ffffc900015c7980
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900015c7980
R13: ffffc900015c79bc R14: 1ffff920002b8f37 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563c9e8b0768 CR3: 000000000ce8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
insn_get_length arch/x86/lib/insn.c:707 [inline]
insn_decode+0x36c/0x500 arch/x86/lib/insn.c:747
text_poke_loc_init+0xd2/0x680 arch/x86/kernel/alternative.c:1620
arch_jump_label_transform_queue+0x71/0xd0 arch/x86/kernel/jump_label.c:138
__jump_label_update+0x177/0x3a0 kernel/jump_label.c:447
static_key_disable_cpuslocked+0xca/0x1b0 kernel/jump_label.c:207
static_key_disable+0x16/0x20 kernel/jump_label.c:215
toggle_allocation_gate+0x3e0/0x480 mm/kfence/core.c:818
process_one_work+0x8aa/0x11f0 kernel/workqueue.c:2292
worker_thread+0xa5f/0x1210 kernel/workqueue.c:2439
kthread+0x26e/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.319 msecs