ci starts bisection 2022-11-06 04:22:36.649219077 +0000 UTC m=+204082.199547938
bisecting fixing commit since 200e340f2196d7fd427a5810d06e893b932f145a
building syzkaller on e853abd9a2542fcccb8e1a23eb8ae475500ecaf9
ensuring issue is reproducible on original commit 200e340f2196d7fd427a5810d06e893b932f145a

testing commit 200e340f2196d7fd427a5810d06e893b932f145a gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 4327cfc5c1f53f91ba882da7821063886d36d5d6eb320e02edc1852f483f2f0b
all runs: crashed: INFO: task hung in __generic_file_fsync
testing current HEAD 2f5065a0bc9d0afb45f2ae284bd525d55ce82c33
testing commit 2f5065a0bc9d0afb45f2ae284bd525d55ce82c33 gcc
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 393fde5b666d56c843cb99c6cfb9c394df14fc2ad4878cb4435157a366d11075
run #0: crashed: INFO: task hung in __generic_file_fsync
run #1: crashed: INFO: task hung in fat_setattr
run #2: crashed: INFO: task hung in __generic_file_fsync
run #3: crashed: INFO: task hung in __generic_file_fsync
run #4: crashed: INFO: task hung in __generic_file_fsync
run #5: crashed: INFO: task hung in __generic_file_fsync
run #6: crashed: INFO: task hung in __generic_file_fsync
run #7: crashed: INFO: task hung in __generic_file_fsync
run #8: crashed: INFO: task hung in __generic_file_fsync
run #9: crashed: INFO: task hung in __generic_file_fsync
revisions tested: 2, total time: 28m28.720169385s (build: 13m26.289878444s, test: 14m16.973858724s)
the crash still happens on HEAD
commit msg: Merge tag 'acpi-6.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
crash: INFO: task hung in __generic_file_fsync
INFO: task kworker/1:0:22 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:0     state:D stack:26216 pid:22    ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:1:27 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:1     state:D stack:25952 pid:27    ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:2:140 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2     state:D stack:26792 pid:140   ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:3:3604 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:3     state:D stack:26272 pid:3604  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:4:3616 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:4     state:D stack:26864 pid:3616  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:5:3625 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:26064 pid:3625  ppid:2      flags:0x00004000
Workqueue: dio/loop4 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:6:4128 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:6     state:D stack:26656 pid:4128  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:7:4181 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:7     state:D stack:27312 pid:4181  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:8:4183 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:8     state:D stack:28384 pid:4183  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
INFO: task kworker/1:9:4184 blocked for more than 145 seconds.
      Not tainted 6.1.0-rc3-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:9     state:D stack:26728 pid:4184  ppid:2      flags:0x00004000
Workqueue: dio/loop5 dio_aio_complete_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0xaa9/0x53b0 kernel/sched/core.c:6503
 schedule+0xda/0x1b0 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0x5fc/0x12d0 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write_common kernel/locking/rwsem.c:1302 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x1e4/0x220 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
 fat_file_fsync+0x5b/0x1f0 fs/fat/file.c:191
 generic_write_sync include/linux/fs.h:2883 [inline]
 dio_complete+0x45a/0x8d0 fs/direct-io.c:309
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8b17d930 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8b17d630 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
3 locks held by kworker/1:0/22:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900001c7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:1/27:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90000a3fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
1 lock held by khungtaskd/28:
 #0: ffffffff8b17e480 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6494
3 locks held by kworker/1:2/140:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000298fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
2 locks held by getty/3279:
 #0: ffff88814b13a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002d262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb6f/0x1040 drivers/tty/n_tty.c:2177
3 locks held by kworker/1:3/3604:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90003bffdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:4/3616:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90003c8fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:5/3625:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90003d0fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:6/4128:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000548fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:7/4181:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000559fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:8/4183:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900055bfdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:9/4184:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900055cfdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/0:12/4188:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900055ffdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:10/4202:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900054cfdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/0:28/4214:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000572fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:11/4227:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900056dfdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:12/4228:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005817db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:13/4229:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005827db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:14/4230:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005837db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:15/4231:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005847db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:16/4232:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005857db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:17/4233:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005867db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:18/4234:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005877db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:19/4235:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005887db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:20/4236:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005897db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:21/4237:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058a7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:22/4238:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058b7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:23/4239:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058c7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:24/4240:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058d7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:25/4241:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058e7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:26/4242:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc900058f7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:27/4243:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005907db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:28/4244:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005917db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:29/4245:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005927db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:30/4246:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005937db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:31/4247:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005947db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:32/4248:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005957db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:33/4249:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005967db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:34/4250:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005977db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:35/4270:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005997db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:36/4271:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000553fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:37/4272:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005a17db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:38/4273:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc90005a27db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
5 locks held by kworker/u4:7/4284:
3 locks held by kworker/1:39/4493:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a207db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:40/4507:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a427db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:41/4535:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a4d7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/0:48/4594:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a2b7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:42/4623:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a6a7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:43/4624:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a6b7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:44/4625:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a6c7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:45/4752:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000a7a7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:46/4858:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000aad7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:47/4859:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000acffdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:48/4893:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000abe7db8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:49/4901:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000adffdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
2 locks held by syz-executor.4/4951:
 #0: ffff88801c0be460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 #0: ffff88801c0be460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 #1: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: do_truncate+0xd9/0x190 fs/open.c:63
1 lock held by syz-executor.4/4954:
 #0: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #0: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: generic_file_write_iter+0x89/0x2c0 mm/filemap.c:3910
2 locks held by syz-executor.5/4955:
 #0: ffff888077c1c460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 #0: ffff888077c1c460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 #1: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: do_truncate+0xd9/0x190 fs/open.c:63
2 locks held by syz-executor.3/4956:
 #0: ffff88801db56460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 #0: ffff88801db56460 (sb_writers#13){.+.+}-{0:0}, at: do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 #1: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: do_truncate+0xd9/0x190 fs/open.c:63
1 lock held by syz-executor.3/4959:
 #0: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #0: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: generic_file_write_iter+0x89/0x2c0 mm/filemap.c:3910
3 locks held by dio/loop4/4957:
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff88806c407138 ((wq_completion)dio/loop4){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000ae6fd58 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695caec0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by dio/loop3/4960:
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae538 ((wq_completion)dio/loop3){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000aa87d58 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880695cce50 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by dio/loop5/4961:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000b2d7d58 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120
3 locks held by kworker/1:50/4967:
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8880698ae938 ((wq_completion)dio/loop5){+.+.}-{0:0}, at: process_one_work+0x7a0/0x14b0 kernel/workqueue.c:2260
 #1: ffffc9000af6fdb8 ((work_completion)(&dio->complete_work)){+.+.}-{0:0}, at: process_one_work+0x7cf/0x14b0 kernel/workqueue.c:2264
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff888072716de0 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: __generic_file_fsync+0x82/0x190 fs/libfs.c:1120

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x18/0x106 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x255/0x2d0 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0x8c4/0xc60 kernel/hung_task.c:377
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5026 Comm: kworker/1:87 Not tainted 6.1.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:lockdep_hardirqs_on+0x4d/0x100 kernel/locking/lockdep.c:4371
Code: 00 00 f0 00 48 89 fd 75 41 65 8b 05 1d 38 44 77 85 c0 75 69 65 8b 05 4e 35 44 77 85 c0 75 5e 8b 35 88 c7 70 07 85 f6 75 21 9c <58> f6 c4 02 75 7a 8b 15 77 c7 70 07 85 d2 75 10 48 8b 83 40 0a 00
RSP: 0018:ffffc9000b547ad8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88807c85d7c0 RCX: 1ffffffff1f4e57e
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff84095d11
RBP: ffffffff84095d11 R08: 0000000000000001 R09: ffffffff8fa20a1f
R10: 0000000000000001 R11: 00000000acca8667 R12: ffff8880b9d36f50
R13: 0000000000000001 R14: ffffc9000b547b60 R15: ffff888075252024
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd4e610ca8 CR3: 0000000071c15000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 crng_make_state+0x3c1/0x660 drivers/char/random.c:350
 _get_random_bytes.part.0+0x8e/0x170 drivers/char/random.c:363
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:779 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
 nsim_dev_trap_report_work+0x70e/0xbc0 drivers/net/netdevsim/dev.c:853
 process_one_work+0x8ba/0x14b0 kernel/workqueue.c:2289
 worker_thread+0x598/0xec0 kernel/workqueue.c:2436
 kthread+0x294/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>