INFO: task syz-executor5:9181 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #278
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D23568  9181   5830 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 evdev_close_device drivers/input/evdev.c:447 [inline]
 evdev_release+0xfe/0x1e0 drivers/input/evdev.c:488
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x410ff1
Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 <c4> 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff
RSP: 002b:00007ffe8e640f90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410ff1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffe8e640ec0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000039 R15: 0000000000000005
INFO: task syz-executor3:9182 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #278
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D22160  9182   5826 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 evdev_close_device drivers/input/evdev.c:447 [inline]
 evdev_release+0xfe/0x1e0 drivers/input/evdev.c:488
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x410ff1
Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 <c4> 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff
RSP: 002b:00007ffc0bbc2800 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410ff1
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffc0bbc2730 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 000000000000003d R15: 0000000000000003
INFO: task syz-executor4:9191 blocked for more than 140 seconds.
      Not tainted 4.19.0-rc7+ #278
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor4   D23568  9191   5827 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2825 [inline]
 __schedule+0x86c/0x1ed0 kernel/sched/core.c:3473
 schedule+0xfe/0x460 kernel/sched/core.c:3517
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3575
 __mutex_lock_common kernel/locking/mutex.c:1002 [inline]
 __mutex_lock+0xbe7/0x1700 kernel/locking/mutex.c:1072
 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087
 evdev_close_device drivers/input/evdev.c:447 [inline]
 evdev_release+0xfe/0x1e0 drivers/input/evdev.c:488
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x410ff1
Code: 30 48 89 4c 24 10 e8 8e 09 00 00 48 8b 44 24 28 48 89 04 24 48 8b 44 24 30 48 89 44 24 08 e8 36 5d 04 00 48 8b 6c 24 18 48 83 <c4> 20 c3 cc cc cc cc cc cc cc cc cc cc cc cc 64 48 8b 0c 25 f8 ff
RSP: 002b:00007ffce18c6db0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000410ff1
RDX: 0000000000000000 RSI: 00000000007304e8 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007ffce18c6ce0 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000039 R15: 0000000000000004
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 977 Comm: khungtaskd Not tainted 4.19.0-rc7+ #278
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c4/0x2b4 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold.3+0x63/0xa2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x1ed lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:204 [inline]
 watchdog+0xb3e/0x1050 kernel/hung_task.c:265
 kthread+0x35a/0x420 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:413
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:57