INFO: task kworker/u4:0:9 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:0    state:D stack:0     pid:9     ppid:2      flags:0x00000008
Workqueue: netns cleanup_net
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_timeout+0xc8/0x2f4 kernel/time/timer.c:2144
 do_wait_for_common+0x2a4/0x438 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x44/0x5c kernel/sched/completion.c:138
 __debugfs_file_removed fs/debugfs/inode.c:749 [inline]
 remove_one+0xec/0x164 fs/debugfs/inode.c:755
 simple_recursive_removal+0x4ec/0x6bc fs/libfs.c:297
 debugfs_remove+0x60/0x88 fs/debugfs/inode.c:778
 nsim_dev_health_exit+0x44/0xb8 drivers/net/netdevsim/health.c:281
 nsim_dev_reload_destroy+0x270/0x434 drivers/net/netdevsim/dev.c:1666
 nsim_dev_reload_down+0x9c/0xd8 drivers/net/netdevsim/dev.c:968
 devlink_reload+0x1b4/0x584 net/devlink/leftover.c:4485
 devlink_pernet_pre_exit+0x118/0x2b0 net/devlink/leftover.c:12534
 ops_pre_exit_list net/core/net_namespace.c:162 [inline]
 cleanup_net+0x47c/0xa90 net/core/net_namespace.c:620
 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292
 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439
 kthread+0x254/0x2e0 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854
INFO: task syz-executor:5994 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:5994  ppid:1      flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_timeout+0xc8/0x2f4 kernel/time/timer.c:2144
 do_wait_for_common+0x2a4/0x438 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x44/0x5c kernel/sched/completion.c:138
 devlink_unregister+0xe8/0x6bc net/devlink/leftover.c:9782
 nsim_drv_remove+0x54/0x16c drivers/net/netdevsim/dev.c:1677
 nsim_bus_remove+0x20/0x30 drivers/net/netdevsim/bus.c:246
 device_remove drivers/base/dd.c:547 [inline]
 __device_release_driver drivers/base/dd.c:1279 [inline]
 device_release_driver_internal+0x3d4/0x6e4 drivers/base/dd.c:1305
 device_release_driver+0x28/0x38 drivers/base/dd.c:1328
 bus_remove_device+0x294/0x384 drivers/base/bus.c:531
 device_del+0x580/0x990 drivers/base/core.c:3901
 device_unregister+0x2c/0xc8 drivers/base/core.c:3944
 nsim_bus_dev_del drivers/net/netdevsim/bus.c:310 [inline]
 del_device_store+0x288/0x330 drivers/net/netdevsim/bus.c:219
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz.3.1495:6114 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1495      state:D stack:0     pid:6114  ppid:4525   flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 __mutex_lock_common+0xb38/0x1f88 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 devl_lock net/devlink/leftover.c:275 [inline]
 devlink_health_report+0x3d8/0xc1c net/devlink/leftover.c:7778
 nsim_dev_health_break_write+0x15c/0x208 drivers/net/netdevsim/health.c:216
 full_proxy_write+0x110/0x1f4 fs/debugfs/file.c:244
 vfs_write+0x2a8/0x7c8 fs/read_write.c:582
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz.4.1547:6162 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1547      state:D stack:0     pid:6162  ppid:4529   flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 rwsem_down_read_slowpath+0x478/0x750 kernel/locking/rwsem.c:1094
 __down_read_common kernel/locking/rwsem.c:1261 [inline]
 __down_read kernel/locking/rwsem.c:1274 [inline]
 down_read+0xa8/0x300 kernel/locking/rwsem.c:1522
 inode_lock_shared include/linux/fs.h:774 [inline]
 open_last_lookups fs/namei.c:3600 [inline]
 path_openat+0x5cc/0x27a0 fs/namei.c:3835
 do_filp_open+0x198/0x38c fs/namei.c:3865
 do_sys_openat2+0x134/0x3fc fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz.2.1549:6164 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1549      state:D stack:0     pid:6164  ppid:4523   flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 rwsem_down_read_slowpath+0x478/0x750 kernel/locking/rwsem.c:1094
 __down_read_common kernel/locking/rwsem.c:1261 [inline]
 __down_read kernel/locking/rwsem.c:1274 [inline]
 down_read+0xa8/0x300 kernel/locking/rwsem.c:1522
 inode_lock_shared include/linux/fs.h:774 [inline]
 open_last_lookups fs/namei.c:3600 [inline]
 path_openat+0x5cc/0x27a0 fs/namei.c:3835
 do_filp_open+0x198/0x38c fs/namei.c:3865
 do_sys_openat2+0x134/0x3fc fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz.1.1548:6165 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.1548      state:D stack:0     pid:6165  ppid:4519   flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 rwsem_down_read_slowpath+0x478/0x750 kernel/locking/rwsem.c:1094
 __down_read_common kernel/locking/rwsem.c:1261 [inline]
 __down_read kernel/locking/rwsem.c:1274 [inline]
 down_read+0xa8/0x300 kernel/locking/rwsem.c:1522
 inode_lock_shared include/linux/fs.h:774 [inline]
 open_last_lookups fs/namei.c:3600 [inline]
 path_openat+0x5cc/0x27a0 fs/namei.c:3835
 do_filp_open+0x198/0x38c fs/namei.c:3865
 do_sys_openat2+0x134/0x3fc fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __arm64_sys_openat+0x11c/0x150 fs/open.c:1347
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz-executor:6171 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6171  ppid:1      flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 __mutex_lock_common+0xb38/0x1f88 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz-executor:6179 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6179  ppid:1      flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 __mutex_lock_common+0xb38/0x1f88 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz-executor:6180 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6180  ppid:1      flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 __mutex_lock_common+0xb38/0x1f88 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589
INFO: task syz-executor:6181 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6181  ppid:1      flags:0x00000001
Call trace:
 __switch_to+0x2f4/0x550 arch/arm64/kernel/process.c:555
 context_switch kernel/sched/core.c:5257 [inline]
 __schedule+0xdb4/0x1aa4 kernel/sched/core.c:6584
 schedule+0xc4/0x170 kernel/sched/core.c:6660
 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6719
 __mutex_lock_common+0xb38/0x1f88 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799
 del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
 bus_attr_store+0x80/0xa4 drivers/base/bus.c:124
 sysfs_kf_write+0x1f8/0x274 fs/sysfs/file.c:140
 kernfs_fop_write_iter+0x390/0x4b4 fs/kernfs/file.c:352
 call_write_iter include/linux/fs.h:2271 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x3c8/0x7c8 fs/read_write.c:584
 ksys_write+0x12c/0x228 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:646
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x12c arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:589

Showing all locks held in the system:
5 locks held by kworker/u4:0/9:
 #0: ffff0000c0845138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1
 #1: ffff80001dbb7c40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267
 #2: ffff800018a4c3d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x144/0xa90 net/core/net_namespace.c:594
 #3: ffff0000d201b2f8 (&devlink->lock_key#2){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0xfc/0x2b0 net/devlink/leftover.c:12533
 #4: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:799 [inline]
 #4: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3/2){+.+.}-{3:3}, at: simple_recursive_removal+0x2bc/0x6bc fs/libfs.c:289
1 lock held by rcu_tasks_kthre/12:
 #0: ffff8000165b7ed0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xc64 kernel/rcu/tasks.h:543
1 lock held by rcu_tasks_trace/13:
 #0: ffff8000165b8710 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x40/0xc64 kernel/rcu/tasks.h:543
1 lock held by khungtaskd/28:
 #0: ffff8000165b7580 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0xc/0x44 include/linux/rcupdate.h:349
2 locks held by kworker/u4:3/203:
2 locks held by getty/4088:
 #0: ffff0000d743a098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
 #1: ffff800021afb2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x2e8/0xffc drivers/tty/n_tty.c:2198
5 locks held by syz-executor/5994:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000d47e3488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
 #4: ffff0000d201a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:885 [inline]
 #4: ffff0000d201a0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1099 [inline]
 #4: ffff0000d201a0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x9c/0x6e4 drivers/base/dd.c:1302
2 locks held by syz.3.1495/6114:
 #0: ffff0000c2e1a460 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000d201b2f8 (&devlink->lock_key#2){+.+.}-{3:3}, at: devl_lock net/devlink/leftover.c:275 [inline]
 #1: ffff0000d201b2f8 (&devlink->lock_key#2){+.+.}-{3:3}, at: devlink_health_report+0x3d8/0xc1c net/devlink/leftover.c:7778
2 locks held by syz.4.1547/6162:
 #0: ffff0000c2e1a460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:774 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3600 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: path_openat+0x5cc/0x27a0 fs/namei.c:3835
2 locks held by syz.2.1549/6164:
 #0: ffff0000c2e1a460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:774 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3600 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: path_openat+0x5cc/0x27a0 fs/namei.c:3835
2 locks held by syz.1.1548/6165:
 #0: ffff0000c2e1a460 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x44/0x9c fs/namespace.c:402
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:774 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3600 [inline]
 #1: ffff0000f0f34150 (&sb->s_type->i_mutex_key#3){++++}-{3:3}, at: path_openat+0x5cc/0x27a0 fs/namei.c:3835
4 locks held by syz-executor/6171:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000e03d1888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6179:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000f2f4e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6180:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000cb9a0888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6181:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000db23cc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6224:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000d66e8c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6242:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000fb0af488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6243:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000e9947488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6249:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000f2e4e488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6251:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000c9028888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6292:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000efcd9488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6309:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff000100ede488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6310:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000c4cde488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6314:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000ceba5488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209
4 locks held by syz-executor/6317:
 #0: ffff0000d90e2460 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x254/0x7c8 fs/read_write.c:580
 #1: ffff0000f04ff088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1b8/0x4b4 fs/kernfs/file.c:343
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:80 [inline]
 #2: ffff0000cb187a00 (kn->active#56){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x1f8/0x4b4 fs/kernfs/file.c:344
 #3: ffff800017e072c8 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xdc/0x330 drivers/net/netdevsim/bus.c:209

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