INFO: task syz-executor520:3606 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor520 state:D stack:27656 pid:3606  ppid:3605   flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5197 [inline]
 __schedule+0xae5/0x52c0 kernel/sched/core.c:6509
 schedule+0xda/0x1b0 kernel/sched/core.c:6585
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6644
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 blkdev_put+0xbc/0x770 block/bdev.c:910
 blkdev_close+0x64/0x80 block/fops.c:499
 __fput+0x27c/0xa90 fs/file_table.c:320
 task_work_run+0x16b/0x270 kernel/task_work.c:179
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xc3f/0x2b60 kernel/exit.c:818
 do_group_exit+0xd0/0x2a0 kernel/exit.c:948
 get_signal+0x238c/0x2610 kernel/signal.c:2858
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0ff88686c9
RSP: 002b:00007fffa8febac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007f0ff88686c9
RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006
RBP: 0000000000000000 R08: 00007fffa8febc68 R09: 00007fffa8febc68
R10: 000000000000ffff R11: 0000000000000246 R12: 00007f0ff8827750
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
 </TASK>
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:227 [inline]
 watchdog+0xcf7/0xfd0 kernel/hung_task.c:384
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 92 Comm: kworker/u4:4 Not tainted 6.0.0-rc3-next-20220901-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__text_gen_insn arch/x86/include/asm/text-patching.h:116 [inline]
RIP: 0010:text_gen_insn arch/x86/include/asm/text-patching.h:134 [inline]
RIP: 0010:__jump_label_patch+0xb4/0x330 arch/x86/kernel/jump_label.c:53
Code: 00 00 83 f8 05 0f 85 2e 02 00 00 49 c7 c4 20 83 4f 8f 4c 89 e8 48 ba 00 00 00 00 00 fc ff df 4c 89 e1 48 c1 e9 03 0f b6 14 11 <4c> 89 e1 83 e1 07 38 ca 7f 08 84 d2 0f 85 e6 01 00 00 49 8d 7c 24
RSP: 0018:ffffc900015c7b18 EFLAGS: 00000a02
RAX: ffffffff81c87bec RBX: ffffffff81c87d2e RCX: 1ffffffff1e9f064
RDX: 0000000000000005 RSI: ffffffff842a953a RDI: 0000000000000001
RBP: ffffc900015c7b50 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff8f4f8320
R13: ffffffff81c87bec R14: 0000000000000000 R15: 0000000000000005
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005606d978c448 CR3: 000000000bc8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 arch_jump_label_transform_queue+0x63/0x100 arch/x86/kernel/jump_label.c:137
 __jump_label_update+0x12e/0x410 kernel/jump_label.c:447
 jump_label_update+0x32f/0x410 kernel/jump_label.c:801
 static_key_disable_cpuslocked+0x152/0x1b0 kernel/jump_label.c:207
 static_key_disable+0x16/0x20 kernel/jump_label.c:215
 toggle_allocation_gate mm/kfence/core.c:825 [inline]
 toggle_allocation_gate+0x183/0x390 mm/kfence/core.c:803
 process_one_work+0x991/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>