INFO: task syz.8.498:6176 blocked for more than 430 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.498       state:D stack:0     pid:6176  tgid:6176  ppid:5821   task_flags:0x400040 flags:0x00000019
Call trace:
 __switch_to+0x584/0xb20 arch/arm64/kernel/process.c:741 (T)
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1eec/0x33a4 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0xac/0x27c kernel/sched/core.c:7026
 schedule_timeout+0x5c/0x1e4 kernel/time/sleep_timeout.c:75
 do_wait_for_common+0x28c/0x444 kernel/sched/completion.c:100
 __wait_for_common kernel/sched/completion.c:121 [inline]
 wait_for_common kernel/sched/completion.c:132 [inline]
 wait_for_completion+0x44/0x5c kernel/sched/completion.c:153
 __synchronize_srcu+0x2a4/0x320 kernel/rcu/srcutree.c:1454
 synchronize_srcu+0x3cc/0x4f0 kernel/rcu/srcutree.c:-1
 mmu_notifier_unregister+0x320/0x42c mm/mmu_notifier.c:831
 kvm_destroy_vm virt/kvm/kvm_main.c:1295 [inline]
 kvm_put_kvm+0x698/0xbe8 virt/kvm/kvm_main.c:1353
 kvm_vm_release+0x58/0x78 virt/kvm/kvm_main.c:1376
 __fput+0x4ac/0x980 fs/file_table.c:468
 ____fput+0x20/0x58 fs/file_table.c:496
 task_work_run+0x1bc/0x254 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xfc/0x178 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:103 [inline]
 el0_svc+0x170/0x234 arch/arm64/kernel/entry-common.c:747
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffff800087957348 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u4:5/52:
2 locks held by getty/3194:
 #0: 90f00000120328a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: 0dff80008c6db2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x310/0x12b8 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/3329:
2 locks held by kworker/u4:4/3384:
 #0: 6bf000000cc26948 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7c8/0x1a18 kernel/workqueue.c:3237
 #1: ffff8000a3c27c88 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x1a18 kernel/workqueue.c:3237
3 locks held by kworker/u4:1/4170:
3 locks held by kworker/u4:8/5032:
2 locks held by kworker/u4:9/5037:
3 locks held by kworker/u4:10/5152:
3 locks held by kworker/u4:11/5184:
3 locks held by kworker/u4:6/5467:
3 locks held by kworker/u4:7/5502:
3 locks held by kworker/u4:12/5673:
 #0: 61f000000cc26d48 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work+0x7c8/0x1a18 kernel/workqueue.c:3237
 #1: ffff80008e3e7c88 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x854/0x1a18 kernel/workqueue.c:3237
 #2: ffff800087c7a400 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/u4:14/5971:
2 locks held by syz.7.497/6175:
1 lock held by syz-executor/6198:
3 locks held by kworker/u4:3/6240:
 #0: 83f0000011a54948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x7c8/0x1a18 kernel/workqueue.c:3237
 #1: ffff80008fe37c88 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x854/0x1a18 kernel/workqueue.c:3237
 #2: fff0000072d6bd58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:638 [inline]
 #2: fff0000072d6bd58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1546 [inline]
 #2: fff0000072d6bd58 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1868 [inline]
 #2: fff0000072d6bd58 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x2f0/0x33a4 kernel/sched/core.c:6833
2 locks held by modprobe/6354:
4 locks held by dhcpcd-run-hook/6355:

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