INFO: task syz-executor928:6563 can't die for more than 143 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6563 ppid:  6533 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce8bc318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934a8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00007f43ce9934a0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934ac
R13: 00007ffe77f9113f R14: 00007f43ce8bc400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6575 can't die for more than 144 seconds.
task:syz-executor928 state:R  running task     stack:29104 pid: 6575 ppid:  6533 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6565 can't die for more than 145 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6565 ppid:  6532 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 </TASK>
INFO: task syz-executor928:6577 can't die for more than 145 seconds.
task:syz-executor928 state:R  running task     stack:29536 pid: 6577 ppid:  6532 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6568 can't die for more than 147 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6568 ppid:  6528 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce8bc318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934a8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00007f43ce9934a0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934ac
R13: 00007ffe77f9113f R14: 00007f43ce8bc400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6579 can't die for more than 148 seconds.
task:syz-executor928 state:R  running task     stack:29536 pid: 6579 ppid:  6528 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6573 can't die for more than 149 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6573 ppid:  6527 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce8bc318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934a8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00007f43ce9934a0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934ac
R13: 00007ffe77f9113f R14: 00007f43ce8bc400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6580 can't die for more than 150 seconds.
task:syz-executor928 state:R  running task     stack:29536 pid: 6580 ppid:  6527 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6574 can't die for more than 151 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6574 ppid:  6530 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce8bc318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934a8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00007f43ce9934a0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934ac
R13: 00007ffe77f9113f R14: 00007f43ce8bc400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6581 can't die for more than 152 seconds.
task:syz-executor928 state:R  running task     stack:29104 pid: 6581 ppid:  6530 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 _cond_resched include/linux/sched.h:2027 [inline]
 mousedev_write+0x12d/0x880 drivers/input/mousedev.c:707
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>
INFO: task syz-executor928:6583 can't die for more than 153 seconds.
task:syz-executor928 state:R  running task     stack:28472 pid: 6583 ppid:  6531 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 </TASK>
INFO: task syz-executor928:6585 can't die for more than 153 seconds.
task:syz-executor928 state:R  running task     stack:29536 pid: 6585 ppid:  6531 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4965 [inline]
 __schedule+0xa9a/0x4940 kernel/sched/core.c:6246
 preempt_schedule_common+0x45/0xc0 kernel/sched/core.c:6412
 __cond_resched+0x13/0x20 kernel/sched/core.c:8125
 spin_lock_irq include/linux/spinlock.h:392 [inline]
 mousedev_write+0x19c/0x880 drivers/input/mousedev.c:686
 vfs_write+0x28e/0xae0 fs/read_write.c:592
 ksys_write+0x1ee/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f43ce90f259
RSP: 002b:00007f43ce87a318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f43ce9934c8 RCX: 00007f43ce90f259
RDX: 00000000fffffdef RSI: 0000000020000340 RDI: 0000000000000004
RBP: 00007f43ce9934c0 R08: 0000000000000017 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f43ce9934cc
R13: 00007ffe77f9113f R14: 00007f43ce87a400 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/27:
 #0: ffffffff8bb835e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6244:
 #0: ffff888072899c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990

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