[ 755.160778] nipa-hw-worker: drivers/net:napi_threaded.py: timed out
[ 755.163433] nipa-hw-worker: [5/47] Retrying drivers/net:napi_threaded.py
[ 755.317539] kselftest: Running tests in drivers/net
[ 989.665650] INFO: task python3:5248 blocked for more than 122 seconds.
[ 989.673862] Not tainted 7.1.0-rc6-umra-g08201d4e4229 #1
[ 989.681596] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 989.691187] task:python3 state:D stack:25672 pid:5248 tgid:5248 ppid:5247 task_flags:0x400100 flags:0x00080000
[ 989.704393] Call Trace:
[ 989.707934]
[ 989.711086] __schedule+0xcc3/0x19c0
[ 989.715902] ? io_schedule_timeout+0x140/0x140
[ 989.721686] ? find_held_lock+0x2b/0x80
[ 989.726794] ? __lock_release.isra.0+0x6b/0x1a0
[ 989.732681] schedule+0xd8/0x260
[ 989.737101] schedule_preempt_disabled+0x18/0x30
[ 989.743071] __mutex_lock+0x6af/0x2010
[ 989.748077] ? threaded_store+0x132/0x220
[ 989.753379] ? ww_mutex_lock+0x160/0x160
[ 989.758579] ? selinux_inode_free_security+0x330/0x330
[ 989.765150] ? cap_capable+0x1d6/0x3e0
[ 989.770161] ? threaded_store+0x132/0x220
[ 989.775462] threaded_store+0x132/0x220
[ 989.780568] ? xps_rxqs_store+0x2e0/0x2e0
[ 989.785864] ? sysfs_file_kobj+0xbd/0x1e0
[ 989.791164] ? sysfs_kf_write+0x65/0x160
[ 989.796366] ? sysfs_file_ops+0x140/0x140
[ 989.801663] kernfs_fop_write_iter+0x335/0x510
[ 989.807440] ? kernfs_ops+0xf0/0xf0
[ 989.812143] new_sync_write+0x333/0x750
[ 989.817245] ? __lock_acquire+0x508/0xc10
[ 989.822544] ? new_sync_read+0x740/0x740
[ 989.827744] ? lock_acquire.part.0+0xbc/0x260
[ 989.833432] ? ksys_write+0x116/0x250
[ 989.838344] vfs_write+0x657/0x9b0
[ 989.842958] ksys_write+0x116/0x250
[ 989.847669] ? __ia32_sys_read+0xc0/0xc0
[ 989.852869] ? kernfs_fop_llseek+0x160/0x1f0
[ 989.858459] ? rcu_is_watching+0x15/0xd0
[ 989.863662] do_syscall_64+0xf3/0x650
[ 989.868570] ? irq_exit_rcu+0x1a/0x30
[ 989.873468] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 989.879936] RIP: 0033:0x7f28f653364e
[ 989.884743] RSP: 002b:00007ffd6a4b7740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 989.894040] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f28f653364e
[ 989.902838] RDX: 0000000000000001 RSI: 000055b0e55fb420 RDI: 0000000000000007
[ 989.911646] RBP: 00007ffd6a4b7750 R08: 0000000000000000 R09: 0000000000000000
[ 989.920454] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f28f63ac390
[ 989.929263] R13: 000055b0e55fb420 R14: 0000000000000007 R15: 00007f28f6341120
[ 989.938076]
[ 989.941361] INFO: task python3:5248 is blocked on a mutex likely owned by task python3:3274.
[ 989.951634] task:python3 state:D stack:25672 pid:3274 tgid:3274 ppid:3273 task_flags:0x400100 flags:0x00080802
[ 989.964839] Call Trace:
[ 989.968379]
[ 989.971528] __schedule+0xcc3/0x19c0
[ 989.976340] ? io_schedule_timeout+0x140/0x140
[ 989.982123] ? find_held_lock+0x2b/0x80
[ 989.987224] ? __try_to_del_timer_sync+0x155/0x1f0
[ 989.993406] schedule+0xd8/0x260
[ 989.997826] schedule_timeout+0x13f/0x290
[ 990.003117] ? hrtimer_nanosleep_restart+0x270/0x270
[ 990.009488] ? trace_contention_end+0xb3/0x1a0
[ 990.015274] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 990.020965] ? ww_mutex_lock+0x160/0x160
[ 990.026167] msleep+0x1b/0x30
[ 990.030295] napi_set_threaded+0x3a5/0x440
[ 990.035692] ? napi_resume_irqs+0x1a0/0x1a0
[ 990.041188] netif_set_threaded+0x257/0x400
[ 990.046682] threaded_store+0x1b8/0x220
[ 990.051784] ? xps_rxqs_store+0x2e0/0x2e0
[ 990.057084] ? sysfs_file_kobj+0xbd/0x1e0
[ 990.062381] ? sysfs_kf_write+0x65/0x160
[ 990.067581] ? sysfs_file_ops+0x140/0x140
[ 990.072877] kernfs_fop_write_iter+0x335/0x510
[ 990.078661] ? kernfs_ops+0xf0/0xf0
[ 990.083374] new_sync_write+0x333/0x750
[ 990.088485] ? __lock_acquire+0x508/0xc10
[ 990.093781] ? new_sync_read+0x740/0x740
[ 990.098980] ? lock_acquire.part.0+0xbc/0x260
[ 990.104669] ? ksys_write+0x116/0x250
[ 990.109580] vfs_write+0x657/0x9b0
[ 990.114194] ksys_write+0x116/0x250
[ 990.118898] ? __ia32_sys_read+0xc0/0xc0
[ 990.124096] ? kernfs_fop_llseek+0x160/0x1f0
[ 990.129686] ? rcu_is_watching+0x15/0xd0
[ 990.134877] do_syscall_64+0xf3/0x650
[ 990.139775] ? irq_exit_rcu+0x1a/0x30
[ 990.144681] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 990.151147] RIP: 0033:0x7f24dfc5064e
[ 990.155956] RSP: 002b:00007fff46633c10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 990.165248] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f24dfc5064e
[ 990.174055] RDX: 0000000000000001 RSI: 0000560a0062f420 RDI: 0000000000000007
[ 990.182861] RBP: 00007fff46633c20 R08: 0000000000000000 R09: 0000000000000000
[ 990.191670] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f24dfac9390
[ 990.200478] R13: 0000560a0062f420 R14: 0000000000000007 R15: 00007f24dfa5d120
[ 990.209297]
[ 990.212553] \x0aShowing all locks held in the system:
[ 990.221092] 1 lock held by khungtaskd/184:
[ 990.226489] #0: ffffffff9ecfdea0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 990.237972] 4 locks held by python3/3274:
[ 990.243259] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 990.253146] #1: ff1100013cbdee80 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 990.264110] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.275266] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.285362] 4 locks held by python3/5248:
[ 990.290659] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 990.300548] #1: ff110001729c5080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 990.311500] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.322656] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.332749]
[ 990.335215] =============================================\x0a
[ 1112.546833] INFO: task python3:5248 blocked for more than 245 seconds.
[ 1112.554987] Not tainted 7.1.0-rc6-umra-g08201d4e4229 #1
[ 1112.562240] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1112.571829] task:python3 state:D stack:25672 pid:5248 tgid:5248 ppid:5247 task_flags:0x400100 flags:0x00080000
[ 1112.585033] Call Trace:
[ 1112.588572]
[ 1112.591723] __schedule+0xcc3/0x19c0
[ 1112.596539] ? io_schedule_timeout+0x140/0x140
[ 1112.602325] ? find_held_lock+0x2b/0x80
[ 1112.607431] ? __lock_release.isra.0+0x6b/0x1a0
[ 1112.613314] schedule+0xd8/0x260
[ 1112.617720] schedule_preempt_disabled+0x18/0x30
[ 1112.623700] __mutex_lock+0x6af/0x2010
[ 1112.628693] ? threaded_store+0x132/0x220
[ 1112.633990] ? ww_mutex_lock+0x160/0x160
[ 1112.639188] ? selinux_inode_free_security+0x330/0x330
[ 1112.645748] ? cap_capable+0x1d6/0x3e0
[ 1112.650757] ? threaded_store+0x132/0x220
[ 1112.656056] threaded_store+0x132/0x220
[ 1112.661159] ? xps_rxqs_store+0x2e0/0x2e0
[ 1112.666456] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.671752] ? sysfs_kf_write+0x65/0x160
[ 1112.676949] ? sysfs_file_ops+0x140/0x140
[ 1112.682246] kernfs_fop_write_iter+0x335/0x510
[ 1112.688029] ? kernfs_ops+0xf0/0xf0
[ 1112.692741] new_sync_write+0x333/0x750
[ 1112.697844] ? __lock_acquire+0x508/0xc10
[ 1112.703139] ? new_sync_read+0x740/0x740
[ 1112.708340] ? lock_acquire.part.0+0xbc/0x260
[ 1112.714026] ? ksys_write+0x116/0x250
[ 1112.718935] vfs_write+0x657/0x9b0
[ 1112.723551] ksys_write+0x116/0x250
[ 1112.728259] ? __ia32_sys_read+0xc0/0xc0
[ 1112.733456] ? kernfs_fop_llseek+0x160/0x1f0
[ 1112.739045] ? rcu_is_watching+0x15/0xd0
[ 1112.744246] do_syscall_64+0xf3/0x650
[ 1112.749151] ? irq_exit_rcu+0x1a/0x30
[ 1112.754055] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1112.760520] RIP: 0033:0x7f28f653364e
[ 1112.765329] RSP: 002b:00007ffd6a4b7740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1112.774626] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f28f653364e
[ 1112.783423] RDX: 0000000000000001 RSI: 000055b0e55fb420 RDI: 0000000000000007
[ 1112.792228] RBP: 00007ffd6a4b7750 R08: 0000000000000000 R09: 0000000000000000
[ 1112.801032] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f28f63ac390
[ 1112.809841] R13: 000055b0e55fb420 R14: 0000000000000007 R15: 00007f28f6341120
[ 1112.818657]
[ 1112.821932] INFO: task python3:5248 is blocked on a mutex likely owned by task python3:3274.
[ 1112.832195] task:python3 state:D stack:25672 pid:3274 tgid:3274 ppid:3273 task_flags:0x400100 flags:0x00080802
[ 1112.845396] Call Trace:
[ 1112.848935]
[ 1112.852083] __schedule+0xcc3/0x19c0
[ 1112.856892] ? io_schedule_timeout+0x140/0x140
[ 1112.862676] ? find_held_lock+0x2b/0x80
[ 1112.867777] ? __try_to_del_timer_sync+0x155/0x1f0
[ 1112.873953] schedule+0xd8/0x260
[ 1112.878369] schedule_timeout+0x13f/0x290
[ 1112.883666] ? hrtimer_nanosleep_restart+0x270/0x270
[ 1112.890033] ? trace_contention_end+0xb3/0x1a0
[ 1112.895815] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 1112.901504] ? ww_mutex_lock+0x160/0x160
[ 1112.906701] msleep+0x1b/0x30
[ 1112.910824] napi_set_threaded+0x3a5/0x440
[ 1112.916218] ? napi_resume_irqs+0x1a0/0x1a0
[ 1112.921712] netif_set_threaded+0x257/0x400
[ 1112.927205] threaded_store+0x1b8/0x220
[ 1112.932306] ? xps_rxqs_store+0x2e0/0x2e0
[ 1112.937601] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.942897] ? sysfs_kf_write+0x65/0x160
[ 1112.948098] ? sysfs_file_ops+0x140/0x140
[ 1112.953390] kernfs_fop_write_iter+0x335/0x510
[ 1112.959174] ? kernfs_ops+0xf0/0xf0
[ 1112.963885] new_sync_write+0x333/0x750
[ 1112.968985] ? __lock_acquire+0x508/0xc10
[ 1112.974281] ? new_sync_read+0x740/0x740
[ 1112.979479] ? lock_acquire.part.0+0xbc/0x260
[ 1112.985163] ? ksys_write+0x116/0x250
[ 1112.990072] vfs_write+0x657/0x9b0
[ 1112.994685] ksys_write+0x116/0x250
[ 1112.999396] ? __ia32_sys_read+0xc0/0xc0
[ 1113.004595] ? kernfs_fop_llseek+0x160/0x1f0
[ 1113.010183] ? rcu_is_watching+0x15/0xd0
[ 1113.015383] do_syscall_64+0xf3/0x650
[ 1113.020279] ? irq_exit_rcu+0x1a/0x30
[ 1113.025183] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1113.031654] RIP: 0033:0x7f24dfc5064e
[ 1113.036461] RSP: 002b:00007fff46633c10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1113.045759] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f24dfc5064e
[ 1113.054566] RDX: 0000000000000001 RSI: 0000560a0062f420 RDI: 0000000000000007
[ 1113.063372] RBP: 00007fff46633c20 R08: 0000000000000000 R09: 0000000000000000
[ 1113.072180] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f24dfac9390
[ 1113.080985] R13: 0000560a0062f420 R14: 0000000000000007 R15: 00007f24dfa5d120
[ 1113.089796]
[ 1113.093060] \x0aShowing all locks held in the system:
[ 1113.101596] 1 lock held by khungtaskd/184:
[ 1113.106990] #0: ffffffff9ecfdea0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1113.118469] 4 locks held by python3/3274:
[ 1113.123764] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 1113.133658] #1: ff1100013cbdee80 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 1113.144619] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.155772] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.165870] 4 locks held by python3/5248:
[ 1113.171163] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 1113.181051] #1: ff110001729c5080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 1113.192011] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.203165] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.213257]
[ 1113.215722] =============================================\x0a
[ 1235.427986] INFO: task python3:5248 blocked for more than 368 seconds.
[ 1235.436138] Not tainted 7.1.0-rc6-umra-g08201d4e4229 #1
[ 1235.443387] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1235.452977] task:python3 state:D stack:25672 pid:5248 tgid:5248 ppid:5247 task_flags:0x400100 flags:0x00080002
[ 1235.466183] Call Trace:
[ 1235.469723]
[ 1235.472875] __schedule+0xcc3/0x19c0
[ 1235.477689] ? io_schedule_timeout+0x140/0x140
[ 1235.483467] ? find_held_lock+0x2b/0x80
[ 1235.488573] ? __lock_release.isra.0+0x6b/0x1a0
[ 1235.494459] schedule+0xd8/0x260
[ 1235.498876] schedule_preempt_disabled+0x18/0x30
[ 1235.504853] __mutex_lock+0x6af/0x2010
[ 1235.509857] ? threaded_store+0x132/0x220
[ 1235.515147] ? ww_mutex_lock+0x160/0x160
[ 1235.520343] ? selinux_inode_free_security+0x330/0x330
[ 1235.526915] ? cap_capable+0x1d6/0x3e0
[ 1235.531920] ? threaded_store+0x132/0x220
[ 1235.537207] threaded_store+0x132/0x220
[ 1235.542312] ? xps_rxqs_store+0x2e0/0x2e0
[ 1235.547612] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.552912] ? sysfs_kf_write+0x65/0x160
[ 1235.558103] ? sysfs_file_ops+0x140/0x140
[ 1235.563396] kernfs_fop_write_iter+0x335/0x510
[ 1235.569180] ? kernfs_ops+0xf0/0xf0
[ 1235.573892] new_sync_write+0x333/0x750
[ 1235.578983] ? __lock_acquire+0x508/0xc10
[ 1235.584278] ? new_sync_read+0x740/0x740
[ 1235.589477] ? lock_acquire.part.0+0xbc/0x260
[ 1235.595229] ? ksys_write+0x116/0x250
[ 1235.600139] vfs_write+0x657/0x9b0
[ 1235.604754] ksys_write+0x116/0x250
[ 1235.609463] ? __ia32_sys_read+0xc0/0xc0
[ 1235.614728] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.620320] ? rcu_is_watching+0x15/0xd0
[ 1235.625523] do_syscall_64+0xf3/0x650
[ 1235.625530] ? irq_exit_rcu+0x1a/0x30
[ 1235.625535] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.625539] RIP: 0033:0x7f28f653364e
[ 1235.625543] RSP: 002b:00007ffd6a4b7740 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.655953] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f28f653364e
[ 1235.664754] RDX: 0000000000000001 RSI: 000055b0e55fb420 RDI: 0000000000000007
[ 1235.673563] RBP: 00007ffd6a4b7750 R08: 0000000000000000 R09: 0000000000000000
[ 1235.682372] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f28f63ac390
[ 1235.691182] R13: 000055b0e55fb420 R14: 0000000000000007 R15: 00007f28f6341120
[ 1235.699997]
[ 1235.703329] INFO: task python3:5248 is blocked on a mutex likely owned by task python3:3274.
[ 1235.713603] task:python3 state:D stack:25672 pid:3274 tgid:3274 ppid:3273 task_flags:0x400100 flags:0x00080802
[ 1235.726804] Call Trace:
[ 1235.730344]
[ 1235.733494] __schedule+0xcc3/0x19c0
[ 1235.738304] ? io_schedule_timeout+0x140/0x140
[ 1235.744090] ? find_held_lock+0x2b/0x80
[ 1235.749194] ? __try_to_del_timer_sync+0x155/0x1f0
[ 1235.755376] schedule+0xd8/0x260
[ 1235.759797] schedule_timeout+0x13f/0x290
[ 1235.765096] ? hrtimer_nanosleep_restart+0x270/0x270
[ 1235.771465] ? trace_contention_end+0xb3/0x1a0
[ 1235.777250] ? hrtimers_cpu_dying+0x3e0/0x3e0
[ 1235.782939] ? ww_mutex_lock+0x160/0x160
[ 1235.788136] msleep+0x1b/0x30
[ 1235.792262] napi_set_threaded+0x3a5/0x440
[ 1235.797657] ? napi_resume_irqs+0x1a0/0x1a0
[ 1235.803151] netif_set_threaded+0x257/0x400
[ 1235.808648] threaded_store+0x1b8/0x220
[ 1235.813750] ? xps_rxqs_store+0x2e0/0x2e0
[ 1235.819051] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.824348] ? sysfs_kf_write+0x65/0x160
[ 1235.829549] ? sysfs_file_ops+0x140/0x140
[ 1235.834847] kernfs_fop_write_iter+0x335/0x510
[ 1235.840632] ? kernfs_ops+0xf0/0xf0
[ 1235.845345] new_sync_write+0x333/0x750
[ 1235.850449] ? __lock_acquire+0x508/0xc10
[ 1235.855745] ? new_sync_read+0x740/0x740
[ 1235.860949] ? lock_acquire.part.0+0xbc/0x260
[ 1235.866637] ? ksys_write+0x116/0x250
[ 1235.871547] vfs_write+0x657/0x9b0
[ 1235.876165] ksys_write+0x116/0x250
[ 1235.880877] ? __ia32_sys_read+0xc0/0xc0
[ 1235.886077] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.891666] ? rcu_is_watching+0x15/0xd0
[ 1235.896866] do_syscall_64+0xf3/0x650
[ 1235.901763] ? irq_exit_rcu+0x1a/0x30
[ 1235.906670] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.913136] RIP: 0033:0x7f24dfc5064e
[ 1235.917943] RSP: 002b:00007fff46633c10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.927240] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f24dfc5064e
[ 1235.936047] RDX: 0000000000000001 RSI: 0000560a0062f420 RDI: 0000000000000007
[ 1235.944855] RBP: 00007fff46633c20 R08: 0000000000000000 R09: 0000000000000000
[ 1235.953652] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f24dfac9390
[ 1235.962456] R13: 0000560a0062f420 R14: 0000000000000007 R15: 00007f24dfa5d120
[ 1235.971270]
[ 1235.974536] \x0aShowing all locks held in the system:
[ 1235.983080] 1 lock held by khungtaskd/184:
[ 1235.988475] #0: ffffffff9ecfdea0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1235.999957] 4 locks held by python3/3274:
[ 1236.005251] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 1236.015141] #1: ff1100013cbdee80 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 1236.026097] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.037256] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.047358] 4 locks held by python3/5248:
[ 1236.052655] #0: ff1100011cbc43e8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 1236.062542] #1: ff110001729c5080 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 1236.073504] #2: ff11000121640b50 (kn->active#118){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.084662] #3: ff11000121711d68 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.094756] 5 locks held by (systemd-user-)/6742:
[ 1236.100837] #0: ff1100012ecc43e8 (sb_writers#6){.+.+}-{0:0}, at: ksys_write+0x116/0x250
[ 1236.110725] #1: ff110001a8460280 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x248/0x510
[ 1236.121687] #2: ffffffff9ed69c20 (cgroup_mutex){+.+.}-{4:4}, at: cgroup_kn_lock_live+0xe2/0x3e0
[ 1236.132354] #3: ffffffff9eb687b0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_procs_write_start+0x3e5/0x650
[ 1236.144000] #4: ffffffff9ed69990 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_procs_write_start+0x3f1/0x650
[ 1236.156426]
[ 1236.158895] =============================================\x0a
[ 1264.100233] kworker/u129:11 (304) used greatest stack depth: 22176 bytes left