[ 743.851493] nipa-hw-worker: drivers/net:napi_threaded.py: timed out
[ 743.855597] nipa-hw-worker: [4/36] Retrying drivers/net:napi_threaded.py
[ 743.993089] kselftest: Running tests in drivers/net
[ 883.233424] kworker/u129:11 (309) used greatest stack depth: 23048 bytes left
[ 989.729698] INFO: task python3:4723 blocked for more than 122 seconds.
[ 989.737926] Not tainted 7.0.0-rc3-fqbq-g87a6cc0ba9a9 #1
[ 989.745174] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 989.754764] task:python3 state:D stack:25312 pid:4723 tgid:4723 ppid:4722 task_flags:0x400100 flags:0x00080002
[ 989.767970] Call Trace:
[ 989.771507]
[ 989.774658] __schedule+0xad9/0x1490
[ 989.779473] ? io_schedule_timeout+0x130/0x130
[ 989.785258] ? find_held_lock+0x2b/0x80
[ 989.790362] ? __lock_release.isra.0+0x59/0x170
[ 989.796241] schedule+0xd4/0x260
[ 989.800659] schedule_preempt_disabled+0x18/0x30
[ 989.806638] __mutex_lock+0xd76/0x1f20
[ 989.811644] ? threaded_store+0x132/0x220
[ 989.816943] ? ww_mutex_lock+0x160/0x160
[ 989.822140] ? selinux_inode_free_security+0x310/0x310
[ 989.828711] ? cap_capable+0x1ed/0x3f0
[ 989.833717] ? sysfs_file_ops+0x140/0x140
[ 989.839014] ? threaded_store+0x132/0x220
[ 989.844310] threaded_store+0x132/0x220
[ 989.849412] ? tx_maxrate_store+0x4e0/0x4e0
[ 989.854898] ? sysfs_file_ops+0x140/0x140
[ 989.860194] ? sysfs_file_kobj+0xbd/0x1e0
[ 989.865491] ? sysfs_kf_write+0x65/0x160
[ 989.870690] kernfs_fop_write_iter+0x335/0x510
[ 989.876474] ? kernfs_ops+0xf0/0xf0
[ 989.881185] new_sync_write+0x308/0x6f0
[ 989.886289] ? new_sync_read+0x6f0/0x6f0
[ 989.891478] ? lock_acquire.part.0+0xbc/0x260
[ 989.897163] ? ksys_write+0xff/0x200
[ 989.901976] vfs_write+0x62a/0x980
[ 989.906589] ksys_write+0xff/0x200
[ 989.911200] ? __ia32_sys_read+0xc0/0xc0
[ 989.916398] ? kernfs_fop_llseek+0x160/0x1f0
[ 989.921987] ? rcu_is_watching+0x15/0xd0
[ 989.927181] do_syscall_64+0xf3/0x5e0
[ 989.932087] ? exc_page_fault+0x9e/0xb0
[ 989.937188] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 989.943657] RIP: 0033:0x7f707ca26c5e
[ 989.948467] RSP: 002b:00007fff5a794e10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 989.957754] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f707ca26c5e
[ 989.966561] RDX: 0000000000000001 RSI: 000055d5e2486cd0 RDI: 0000000000000007
[ 989.975366] RBP: 00007fff5a794e20 R08: 0000000000000000 R09: 0000000000000000
[ 989.984173] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f707c8c1e80
[ 989.992980] R13: 000055d5e2486cd0 R14: 0000000000000007 R15: 00007f707d127b98
[ 990.001793]
[ 990.005091] INFO: task python3:4723 is blocked on a mutex likely owned by task python3:2742.
[ 990.015369] task:python3 state:D stack:25312 pid:2742 tgid:2742 ppid:2741 task_flags:0x400100 flags:0x00080802
[ 990.028571] Call Trace:
[ 990.032107]
[ 990.035257] __schedule+0xad9/0x1490
[ 990.040065] ? io_schedule_timeout+0x130/0x130
[ 990.045848] ? find_held_lock+0x2b/0x80
[ 990.050950] ? __try_to_del_timer_sync+0x154/0x1f0
[ 990.057126] schedule+0xd4/0x260
[ 990.061536] schedule_timeout+0x103/0x260
[ 990.066831] ? rcu_is_watching+0x15/0xd0
[ 990.072030] ? hrtimer_nanosleep_restart+0x180/0x180
[ 990.078399] ? hrtimers_cpu_dying+0x250/0x250
[ 990.084089] ? ww_mutex_lock+0x160/0x160
[ 990.089287] msleep+0x1b/0x30
[ 990.093411] napi_set_threaded+0x376/0x410
[ 990.098807] ? napi_resume_irqs+0x1a0/0x1a0
[ 990.104299] netif_set_threaded+0x254/0x400
[ 990.109784] ? sysfs_file_ops+0x140/0x140
[ 990.115072] threaded_store+0x1bb/0x220
[ 990.120175] ? tx_maxrate_store+0x4e0/0x4e0
[ 990.125655] ? sysfs_file_ops+0x140/0x140
[ 990.130952] ? sysfs_file_kobj+0xbd/0x1e0
[ 990.136246] ? sysfs_kf_write+0x65/0x160
[ 990.141445] kernfs_fop_write_iter+0x335/0x510
[ 990.147228] ? kernfs_ops+0xf0/0xf0
[ 990.151940] new_sync_write+0x308/0x6f0
[ 990.157039] ? new_sync_read+0x6f0/0x6f0
[ 990.162236] ? lock_acquire.part.0+0xbc/0x260
[ 990.167923] ? ksys_write+0xff/0x200
[ 990.172733] vfs_write+0x62a/0x980
[ 990.177339] ksys_write+0xff/0x200
[ 990.181951] ? __ia32_sys_read+0xc0/0xc0
[ 990.187147] ? kernfs_fop_llseek+0x160/0x1f0
[ 990.192737] ? rcu_is_watching+0x15/0xd0
[ 990.197936] do_syscall_64+0xf3/0x5e0
[ 990.202839] ? irq_exit_rcu+0x39/0xf0
[ 990.207747] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 990.214215] RIP: 0033:0x7fcb81946c5e
[ 990.219022] RSP: 002b:00007ffc7cefb530 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 990.228317] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fcb81946c5e
[ 990.237126] RDX: 0000000000000001 RSI: 0000561809477cd0 RDI: 0000000000000007
[ 990.245950] RBP: 00007ffc7cefb540 R08: 0000000000000000 R09: 0000000000000000
[ 990.254759] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fcb817e1e80
[ 990.263567] R13: 0000561809477cd0 R14: 0000000000000007 R15: 00007fcb81772480
[ 990.272381]
[ 990.275641] \x0aShowing all locks held in the system:
[ 990.284177] 1 lock held by khungtaskd/185:
[ 990.289570] #0: ffffffffb0acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 990.301051] 4 locks held by python3/2742:
[ 990.306346] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.316137] #1: ff110001ecd1ca88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.327093] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.338250] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.348347] 4 locks held by python3/4723:
[ 990.353638] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.363426] #1: ff11000155042c88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.374390] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.385555] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.395648]
[ 990.398114] =============================================\x0a
[ 1112.611679] INFO: task python3:4723 blocked for more than 245 seconds.
[ 1112.619840] Not tainted 7.0.0-rc3-fqbq-g87a6cc0ba9a9 #1
[ 1112.627092] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1112.636683] task:python3 state:D stack:25312 pid:4723 tgid:4723 ppid:4722 task_flags:0x400100 flags:0x00080002
[ 1112.649890] Call Trace:
[ 1112.653433]
[ 1112.656586] __schedule+0xad9/0x1490
[ 1112.661403] ? io_schedule_timeout+0x130/0x130
[ 1112.667190] ? find_held_lock+0x2b/0x80
[ 1112.672297] ? __lock_release.isra.0+0x59/0x170
[ 1112.678181] schedule+0xd4/0x260
[ 1112.682600] schedule_preempt_disabled+0x18/0x30
[ 1112.688577] __mutex_lock+0xd76/0x1f20
[ 1112.693581] ? threaded_store+0x132/0x220
[ 1112.698883] ? ww_mutex_lock+0x160/0x160
[ 1112.704082] ? selinux_inode_free_security+0x310/0x310
[ 1112.710652] ? cap_capable+0x1ed/0x3f0
[ 1112.715663] ? sysfs_file_ops+0x140/0x140
[ 1112.720961] ? threaded_store+0x132/0x220
[ 1112.726256] threaded_store+0x132/0x220
[ 1112.731360] ? tx_maxrate_store+0x4e0/0x4e0
[ 1112.736853] ? sysfs_file_ops+0x140/0x140
[ 1112.742141] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.747436] ? sysfs_kf_write+0x65/0x160
[ 1112.752638] kernfs_fop_write_iter+0x335/0x510
[ 1112.758425] ? kernfs_ops+0xf0/0xf0
[ 1112.763139] new_sync_write+0x308/0x6f0
[ 1112.768241] ? new_sync_read+0x6f0/0x6f0
[ 1112.773441] ? lock_acquire.part.0+0xbc/0x260
[ 1112.779129] ? ksys_write+0xff/0x200
[ 1112.783940] vfs_write+0x62a/0x980
[ 1112.788546] ksys_write+0xff/0x200
[ 1112.793159] ? __ia32_sys_read+0xc0/0xc0
[ 1112.798359] ? kernfs_fop_llseek+0x160/0x1f0
[ 1112.803950] ? rcu_is_watching+0x15/0xd0
[ 1112.809154] do_syscall_64+0xf3/0x5e0
[ 1112.814063] ? exc_page_fault+0x9e/0xb0
[ 1112.819165] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1112.825626] RIP: 0033:0x7f707ca26c5e
[ 1112.830438] RSP: 002b:00007fff5a794e10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1112.839735] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f707ca26c5e
[ 1112.848537] RDX: 0000000000000001 RSI: 000055d5e2486cd0 RDI: 0000000000000007
[ 1112.857347] RBP: 00007fff5a794e20 R08: 0000000000000000 R09: 0000000000000000
[ 1112.866156] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f707c8c1e80
[ 1112.874964] R13: 000055d5e2486cd0 R14: 0000000000000007 R15: 00007f707d127b98
[ 1112.883781]
[ 1112.887042] INFO: task python3:4723 is blocked on a mutex likely owned by task python3:2742.
[ 1112.897316] task:python3 state:D stack:25312 pid:2742 tgid:2742 ppid:2741 task_flags:0x400100 flags:0x00080802
[ 1112.910524] Call Trace:
[ 1112.914065]
[ 1112.917216] __schedule+0xad9/0x1490
[ 1112.922029] ? io_schedule_timeout+0x130/0x130
[ 1112.927814] ? find_held_lock+0x2b/0x80
[ 1112.932919] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1112.939097] schedule+0xd4/0x260
[ 1112.943518] schedule_timeout+0x103/0x260
[ 1112.948815] ? rcu_is_watching+0x15/0xd0
[ 1112.954016] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1112.960386] ? hrtimers_cpu_dying+0x250/0x250
[ 1112.966077] ? ww_mutex_lock+0x160/0x160
[ 1112.971277] msleep+0x1b/0x30
[ 1112.975403] napi_set_threaded+0x376/0x410
[ 1112.980802] ? napi_resume_irqs+0x1a0/0x1a0
[ 1112.986299] netif_set_threaded+0x254/0x400
[ 1112.991793] ? sysfs_file_ops+0x140/0x140
[ 1112.997091] threaded_store+0x1bb/0x220
[ 1113.002183] ? tx_maxrate_store+0x4e0/0x4e0
[ 1113.007674] ? sysfs_file_ops+0x140/0x140
[ 1113.012970] ? sysfs_file_kobj+0xbd/0x1e0
[ 1113.018268] ? sysfs_kf_write+0x65/0x160
[ 1113.023468] kernfs_fop_write_iter+0x335/0x510
[ 1113.029255] ? kernfs_ops+0xf0/0xf0
[ 1113.033968] new_sync_write+0x308/0x6f0
[ 1113.039063] ? new_sync_read+0x6f0/0x6f0
[ 1113.044266] ? lock_acquire.part.0+0xbc/0x260
[ 1113.049952] ? ksys_write+0xff/0x200
[ 1113.054763] vfs_write+0x62a/0x980
[ 1113.059377] ksys_write+0xff/0x200
[ 1113.063989] ? __ia32_sys_read+0xc0/0xc0
[ 1113.069190] ? kernfs_fop_llseek+0x160/0x1f0
[ 1113.074781] ? rcu_is_watching+0x15/0xd0
[ 1113.079979] do_syscall_64+0xf3/0x5e0
[ 1113.084883] ? irq_exit_rcu+0x39/0xf0
[ 1113.089791] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1113.096259] RIP: 0033:0x7fcb81946c5e
[ 1113.101067] RSP: 002b:00007ffc7cefb530 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1113.110365] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fcb81946c5e
[ 1113.119175] RDX: 0000000000000001 RSI: 0000561809477cd0 RDI: 0000000000000007
[ 1113.127988] RBP: 00007ffc7cefb540 R08: 0000000000000000 R09: 0000000000000000
[ 1113.136796] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fcb817e1e80
[ 1113.145603] R13: 0000561809477cd0 R14: 0000000000000007 R15: 00007fcb81772480
[ 1113.154418]
[ 1113.157682] \x0aShowing all locks held in the system:
[ 1113.166221] 1 lock held by khungtaskd/185:
[ 1113.171616] #0: ffffffffb0acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1113.183100] 4 locks held by python3/2742:
[ 1113.188395] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.198187] #1: ff110001ecd1ca88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.209149] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.220307] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.230402] 4 locks held by python3/4723:
[ 1113.235700] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.245493] #1: ff11000155042c88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.256454] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.267604] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.277697]
[ 1113.280164] =============================================\x0a
[ 1235.491850] INFO: task python3:4723 blocked for more than 368 seconds.
[ 1235.500001] Not tainted 7.0.0-rc3-fqbq-g87a6cc0ba9a9 #1
[ 1235.507250] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1235.516830] task:python3 state:D stack:25312 pid:4723 tgid:4723 ppid:4722 task_flags:0x400100 flags:0x00080002
[ 1235.530034] Call Trace:
[ 1235.533573]
[ 1235.536721] __schedule+0xad9/0x1490
[ 1235.541533] ? io_schedule_timeout+0x130/0x130
[ 1235.547321] ? find_held_lock+0x2b/0x80
[ 1235.552424] ? __lock_release.isra.0+0x59/0x170
[ 1235.558309] schedule+0xd4/0x260
[ 1235.562725] schedule_preempt_disabled+0x18/0x30
[ 1235.568701] __mutex_lock+0xd76/0x1f20
[ 1235.573705] ? threaded_store+0x132/0x220
[ 1235.579002] ? ww_mutex_lock+0x160/0x160
[ 1235.584201] ? selinux_inode_free_security+0x310/0x310
[ 1235.590760] ? cap_capable+0x1ed/0x3f0
[ 1235.595769] ? sysfs_file_ops+0x140/0x140
[ 1235.601070] ? threaded_store+0x132/0x220
[ 1235.606366] threaded_store+0x132/0x220
[ 1235.611468] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.616949] ? sysfs_file_ops+0x140/0x140
[ 1235.622247] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.627532] ? sysfs_kf_write+0x65/0x160
[ 1235.632733] kernfs_fop_write_iter+0x335/0x510
[ 1235.638518] ? kernfs_ops+0xf0/0xf0
[ 1235.643226] new_sync_write+0x308/0x6f0
[ 1235.648329] ? new_sync_read+0x6f0/0x6f0
[ 1235.653527] ? lock_acquire.part.0+0xbc/0x260
[ 1235.659214] ? ksys_write+0xff/0x200
[ 1235.664026] vfs_write+0x62a/0x980
[ 1235.668640] ksys_write+0xff/0x200
[ 1235.673244] ? __ia32_sys_read+0xc0/0xc0
[ 1235.678441] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.684028] ? rcu_is_watching+0x15/0xd0
[ 1235.689229] do_syscall_64+0xf3/0x5e0
[ 1235.694134] ? exc_page_fault+0x9e/0xb0
[ 1235.699236] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.705704] RIP: 0033:0x7f707ca26c5e
[ 1235.710511] RSP: 002b:00007fff5a794e10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.719808] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f707ca26c5e
[ 1235.728616] RDX: 0000000000000001 RSI: 000055d5e2486cd0 RDI: 0000000000000007
[ 1235.737420] RBP: 00007fff5a794e20 R08: 0000000000000000 R09: 0000000000000000
[ 1235.746226] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f707c8c1e80
[ 1235.755032] R13: 000055d5e2486cd0 R14: 0000000000000007 R15: 00007f707d127b98
[ 1235.763845]
[ 1235.767111] INFO: task python3:4723 is blocked on a mutex likely owned by task python3:2742.
[ 1235.777383] task:python3 state:D stack:25312 pid:2742 tgid:2742 ppid:2741 task_flags:0x400100 flags:0x00080802
[ 1235.790583] Call Trace:
[ 1235.794114]
[ 1235.797262] __schedule+0xad9/0x1490
[ 1235.802072] ? io_schedule_timeout+0x130/0x130
[ 1235.807846] ? find_held_lock+0x2b/0x80
[ 1235.812947] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1235.819124] schedule+0xd4/0x260
[ 1235.823539] schedule_timeout+0x103/0x260
[ 1235.828836] ? rcu_is_watching+0x15/0xd0
[ 1235.834036] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1235.840404] ? hrtimers_cpu_dying+0x250/0x250
[ 1235.846094] ? ww_mutex_lock+0x160/0x160
[ 1235.851291] msleep+0x1b/0x30
[ 1235.855414] napi_set_threaded+0x376/0x410
[ 1235.860810] ? napi_resume_irqs+0x1a0/0x1a0
[ 1235.866297] netif_set_threaded+0x254/0x400
[ 1235.871789] ? sysfs_file_ops+0x140/0x140
[ 1235.877078] threaded_store+0x1bb/0x220
[ 1235.882178] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.887670] ? sysfs_file_ops+0x140/0x140
[ 1235.892966] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.898261] ? sysfs_kf_write+0x65/0x160
[ 1235.903460] kernfs_fop_write_iter+0x335/0x510
[ 1235.909242] ? kernfs_ops+0xf0/0xf0
[ 1235.913954] new_sync_write+0x308/0x6f0
[ 1235.919056] ? new_sync_read+0x6f0/0x6f0
[ 1235.924248] ? lock_acquire.part.0+0xbc/0x260
[ 1235.929934] ? ksys_write+0xff/0x200
[ 1235.934743] vfs_write+0x62a/0x980
[ 1235.939355] ksys_write+0xff/0x200
[ 1235.943966] ? __ia32_sys_read+0xc0/0xc0
[ 1235.949166] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.954756] ? rcu_is_watching+0x15/0xd0
[ 1235.959953] do_syscall_64+0xf3/0x5e0
[ 1235.964860] ? irq_exit_rcu+0x39/0xf0
[ 1235.969767] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.976233] RIP: 0033:0x7fcb81946c5e
[ 1235.981038] RSP: 002b:00007ffc7cefb530 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.990333] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fcb81946c5e
[ 1235.999140] RDX: 0000000000000001 RSI: 0000561809477cd0 RDI: 0000000000000007
[ 1236.007944] RBP: 00007ffc7cefb540 R08: 0000000000000000 R09: 0000000000000000
[ 1236.016752] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fcb817e1e80
[ 1236.025560] R13: 0000561809477cd0 R14: 0000000000000007 R15: 00007fcb81772480
[ 1236.034373]
[ 1236.037640] \x0aShowing all locks held in the system:
[ 1236.046176] 1 lock held by khungtaskd/185:
[ 1236.051571] #0: ffffffffb0acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1236.063042] 4 locks held by python3/2742:
[ 1236.068337] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.078128] #1: ff110001ecd1ca88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.089092] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.100248] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.110338] 4 locks held by python3/4723:
[ 1236.115630] #0: ff1100012e2293f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.125418] #1: ff11000155042c88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.136377] #2: ff11000122d5f0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.147533] #3: ff11000122da1cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.157627]
[ 1236.160093] =============================================\x0a