INFO: task syz-executor.3:6823 blocked for more than 140 seconds.
      Not tainted 4.14.305-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3  D28912  6823   8023 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2811 [inline]
 __schedule+0x88b/0x1de0 kernel/sched/core.c:3386
 schedule+0x8d/0x1b0 kernel/sched/core.c:3430
 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
 do_wait_for_common kernel/sched/completion.c:91 [inline]
 __wait_for_common kernel/sched/completion.c:112 [inline]
 wait_for_common+0x272/0x430 kernel/sched/completion.c:123
 kthread_stop+0xce/0x640 kernel/kthread.c:555
 kvm_mmu_pre_destroy_vm+0x41/0x50 arch/x86/kvm/mmu.c:5912
 kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:781 [inline]
 kvm_put_kvm+0x30a/0xab0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:819
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
 kvm_vm_release+0x3f/0x50 arch/x86/kvm/../../../virt/kvm/kvm_main.c:830
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f497902cfab
RSP: 002b:00007ffddaaadf70 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f497902cfab
RDX: 00007f4978bef260 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f497919c980 R08: 0000000000000000 R09: 00007f4978bef000
R10: 00007f4978bef268 R11: 0000000000000293 R12: 00000000000c20ab
R13: 00007ffddaaae070 R14: 00007f497919af80 R15: 0000000000000032

Showing all locks held in the system:
1 lock held by khungtaskd/1533:
 #0:  (tasklist_lock){.+.+}, at: [<ffffffff8702d99c>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.305-syzkaller #0
netlink: 72 bytes leftover after parsing attributes in process `syz-executor.3'.
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
 watchdog+0x5b9/0xb40 kernel/hung_task.c:274
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7967 Comm: syz-fuzzer Not tainted 4.14.305-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
task: ffff888095f2a300 task.stack: ffff8880b3ff8000
RIP: 0033:0x5477b8
RSP: 002b:000000c0053eced0 EFLAGS: 00000246
RAX: 0000000000000caa RBX: 0000000000972840 RCX: 0000000000000caa
RDX: 000000c000542000 RSI: 000000c00000c060 RDI: 000000000055ed00
RBP: 000000c0053ecef8 R08: 000000c0026bf650 R09: 0000000000000002
R10: 0000000000ce7c78 R11: 000000c0026c0d60 R12: 0000000000000000
R13: 0000000000000000 R14: 000000c00053ed00 R15: 00007f13fb4143ca
FS:  000000c000050490(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f5fd68ff8 CR3: 000000009b2d1000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400