INFO: task kworker/1:7:5157 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7 state:D stack:22896 pid:5157 tgid:5157 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0xf12/0x5c00 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0xe9/0x270 kernel/sched/core.c:6817
usb_kill_urb.part.0+0x1c6/0x250 drivers/usb/core/urb.c:713
usb_kill_urb+0x83/0xa0 drivers/usb/core/urb.c:702
usb_start_wait_urb+0x251/0x4c0 drivers/usb/core/message.c:65
usb_internal_control_msg drivers/usb/core/message.c:103 [inline]
usb_control_msg+0x327/0x4a0 drivers/usb/core/message.c:154
get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 drivers/usb/core/hub.c:4750
hub_port_init+0x68c/0x39e0 drivers/usb/core/hub.c:4946
hub_port_connect drivers/usb/core/hub.c:5394 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
port_event drivers/usb/core/hub.c:5765 [inline]
hub_event+0x2b61/0x4e10 drivers/usb/core/hub.c:5847
process_one_work+0x886/0x15d0 kernel/workqueue.c:2633
process_scheduled_works kernel/workqueue.c:2706 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2787
kthread+0x2c6/0x3a0 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:242
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d1acba0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/u4:10/2837:
1 lock held by klogd/4501:
#0: ffff8880b983ccd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:567 [inline]
#0: ffff8880b983ccd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:552
2 locks held by getty/4808:
#0: ffff88802a2540a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 drivers/tty/n_tty.c:2201
5 locks held by kworker/1:7/5157:
#0: ffff888019ad2d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 kernel/workqueue.c:2608
#1: ffffc90004e77d80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 kernel/workqueue.c:2609
#2: ffff888023568190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:990 [inline]
#2: ffff888023568190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 drivers/usb/core/hub.c:5793
#3: ffff88802356b510 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3151 [inline]
#3: ffff88802356b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5362 [inline]
#3: ffff88802356b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
#3: ffff88802356b510 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline]
#3: ffff88802356b510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x27fe/0x4e10 drivers/usb/core/hub.c:5847
#4: ffff8880233eed28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5363 [inline]
#4: ffff8880233eed28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5605 [inline]
#4: ffff8880233eed28 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5765 [inline]
#4: ffff8880233eed28 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2827/0x4e10 drivers/usb/core/hub.c:5847
1 lock held by vhost-11853/11855:
2 locks held by vhost-12340/12341:
2 locks held by vhost-12552/12553:
3 locks held by vhost-17409/17411:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 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+0x2c6/0x3a0 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:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 12553 Comm: vhost-12552 Not tainted 6.7.0-syzkaller-12829-g125514880ddd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:check_preemption_disabled+0x4/0xe0 lib/smp_processor_id.c:13
Code: 85 c0 74 1a 65 8b 05 d3 d9 74 75 85 c0 75 0f 65 8b 05 dc d6 74 75 85 c0 74 04 90 0f 0b 90 e9 83 fc ff ff 0f 1f 00 41 54 55 53 <48> 83 ec 08 65 8b 1d ed 10 76 75 65 8b 05 e2 10 76 75 a9 ff ff ff
RSP: 0018:ffffc90005b3f560 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88802e690980 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8accb140 RDI: ffffffff8b2fcb40
RBP: ffff88802e690b20 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff888022485940
R13: 00000000ffffffff R14: 00000000ffffffff R15: 0000000000000000
FS: 00007fcb0c5786c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000002 CR3: 000000002bd9d000 CR4: 00000000003506f0
DR0: 0000000000000004 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
lockdep_recursion_inc kernel/locking/lockdep.c:462 [inline]
lock_is_held_type+0x68/0x140 kernel/locking/lockdep.c:5824
lock_is_held include/linux/lockdep.h:231 [inline]
mmap_assert_locked include/linux/mmap_lock.h:65 [inline]
find_vma+0x156/0x1b0 mm/mmap.c:1884
gup_vma_lookup+0x24/0x220 mm/gup.c:1107
__get_user_pages+0x29a/0x1490 mm/gup.c:1209
__get_user_pages_locked mm/gup.c:1509 [inline]
__gup_longterm_locked+0x278/0x2ad0 mm/gup.c:2211
internal_get_user_pages_fast+0x1b43/0x2d40 mm/gup.c:3215
pin_user_pages_fast+0xa8/0xf0 mm/gup.c:3321
set_bit_to_user+0x85/0x230 drivers/vhost/vhost.c:2126
log_write drivers/vhost/vhost.c:2152 [inline]
log_used.isra.0+0x1dd/0x240 drivers/vhost/vhost.c:2208
vhost_update_used_flags+0x30d/0x3e0 drivers/vhost/vhost.c:2271
vhost_disable_notify drivers/vhost/vhost.c:2856 [inline]
vhost_disable_notify+0xc2/0x180 drivers/vhost/vhost.c:2848
vhost_transport_do_send_pkt+0x166/0x10d0 drivers/vhost/vsock.c:107
vhost_worker+0x17e/0x200 drivers/vhost/vhost.c:411
vhost_task_fn+0x16a/0x370 kernel/vhost_task.c:55
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242