[ 745.864128] nipa-hw-worker: drivers/net:napi_threaded.py: timed out
[ 745.867270] nipa-hw-worker: [4/36] Retrying drivers/net:napi_threaded.py
[ 746.041555] kselftest: Running tests in drivers/net
[ 989.739771] INFO: task python3:4743 blocked for more than 122 seconds.
[ 989.747996] Not tainted 7.0.0-rc3-hfcr-g6dfdca9e0d67 #1
[ 989.755253] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 989.764844] task:python3 state:D stack:25312 pid:4743 tgid:4743 ppid:4742 task_flags:0x400100 flags:0x00080002
[ 989.778061] Call Trace:
[ 989.781608]
[ 989.784763] __schedule+0xad9/0x1490
[ 989.789585] ? io_schedule_timeout+0x130/0x130
[ 989.795374] ? find_held_lock+0x2b/0x80
[ 989.800485] ? __lock_release.isra.0+0x59/0x170
[ 989.806377] schedule+0xd4/0x260
[ 989.810797] schedule_preempt_disabled+0x18/0x30
[ 989.816778] __mutex_lock+0xd76/0x1f20
[ 989.821789] ? threaded_store+0x132/0x220
[ 989.827092] ? ww_mutex_lock+0x160/0x160
[ 989.832295] ? selinux_inode_free_security+0x310/0x310
[ 989.838872] ? cap_capable+0x1ed/0x3f0
[ 989.843883] ? sysfs_file_ops+0x140/0x140
[ 989.849188] ? threaded_store+0x132/0x220
[ 989.854490] threaded_store+0x132/0x220
[ 989.859599] ? tx_maxrate_store+0x4e0/0x4e0
[ 989.865097] ? sysfs_file_ops+0x140/0x140
[ 989.870396] ? sysfs_file_kobj+0xbd/0x1e0
[ 989.875698] ? sysfs_kf_write+0x65/0x160
[ 989.880904] kernfs_fop_write_iter+0x335/0x510
[ 989.886691] ? kernfs_ops+0xf0/0xf0
[ 989.891408] new_sync_write+0x308/0x6f0
[ 989.896517] ? new_sync_read+0x6f0/0x6f0
[ 989.901724] ? lock_acquire.part.0+0xbc/0x260
[ 989.907412] ? ksys_write+0xff/0x200
[ 989.912234] vfs_write+0x62a/0x980
[ 989.916854] ksys_write+0xff/0x200
[ 989.921473] ? __ia32_sys_read+0xc0/0xc0
[ 989.926676] ? kernfs_fop_llseek+0x160/0x1f0
[ 989.932272] ? rcu_is_watching+0x15/0xd0
[ 989.937476] do_syscall_64+0xf3/0x5e0
[ 989.942387] ? exc_page_fault+0x9e/0xb0
[ 989.947493] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 989.953965] RIP: 0033:0x7fe0d407cc5e
[ 989.958777] RSP: 002b:00007ffe54803d10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 989.968071] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe0d407cc5e
[ 989.976884] RDX: 0000000000000001 RSI: 00005644cb5dccd0 RDI: 0000000000000007
[ 989.985696] RBP: 00007ffe54803d20 R08: 0000000000000000 R09: 0000000000000000
[ 989.994505] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe0d3f17e80
[ 990.003322] R13: 00005644cb5dccd0 R14: 0000000000000007 R15: 00007fe0d477db98
[ 990.012146]
[ 990.015433] INFO: task python3:4743 is blocked on a mutex likely owned by task python3:2739.
[ 990.025712] task:python3 state:D stack:25312 pid:2739 tgid:2739 ppid:2738 task_flags:0x400100 flags:0x00080802
[ 990.038924] Call Trace:
[ 990.042466]
[ 990.045623] __schedule+0xad9/0x1490
[ 990.050438] ? io_schedule_timeout+0x130/0x130
[ 990.056227] ? find_held_lock+0x2b/0x80
[ 990.061334] ? __try_to_del_timer_sync+0x154/0x1f0
[ 990.067520] schedule+0xd4/0x260
[ 990.071942] schedule_timeout+0x103/0x260
[ 990.077242] ? rcu_is_watching+0x15/0xd0
[ 990.082444] ? hrtimer_nanosleep_restart+0x180/0x180
[ 990.088819] ? hrtimers_cpu_dying+0x250/0x250
[ 990.094514] ? ww_mutex_lock+0x160/0x160
[ 990.099718] msleep+0x1b/0x30
[ 990.103846] napi_set_threaded+0x376/0x410
[ 990.109249] ? napi_resume_irqs+0x1a0/0x1a0
[ 990.114748] netif_set_threaded+0x254/0x400
[ 990.120247] ? sysfs_file_ops+0x140/0x140
[ 990.125547] threaded_store+0x1bb/0x220
[ 990.130654] ? tx_maxrate_store+0x4e0/0x4e0
[ 990.136151] ? sysfs_file_ops+0x140/0x140
[ 990.141450] ? sysfs_file_kobj+0xbd/0x1e0
[ 990.146750] ? sysfs_kf_write+0x65/0x160
[ 990.151954] kernfs_fop_write_iter+0x335/0x510
[ 990.157741] ? kernfs_ops+0xf0/0xf0
[ 990.162457] new_sync_write+0x308/0x6f0
[ 990.167563] ? new_sync_read+0x6f0/0x6f0
[ 990.172770] ? lock_acquire.part.0+0xbc/0x260
[ 990.178452] ? ksys_write+0xff/0x200
[ 990.183273] vfs_write+0x62a/0x980
[ 990.187894] ksys_write+0xff/0x200
[ 990.192513] ? __ia32_sys_read+0xc0/0xc0
[ 990.197715] ? kernfs_fop_llseek+0x160/0x1f0
[ 990.203309] ? rcu_is_watching+0x15/0xd0
[ 990.208511] do_syscall_64+0xf3/0x5e0
[ 990.213420] ? exc_page_fault+0x9e/0xb0
[ 990.218526] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 990.225001] RIP: 0033:0x7f3c42ef4c5e
[ 990.229814] RSP: 002b:00007ffe5c37aa40 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 990.239119] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3c42ef4c5e
[ 990.247931] RDX: 0000000000000001 RSI: 0000559910c42cd0 RDI: 0000000000000007
[ 990.256746] RBP: 00007ffe5c37aa50 R08: 0000000000000000 R09: 0000000000000000
[ 990.265557] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f3c42d8fe80
[ 990.274368] R13: 0000559910c42cd0 R14: 0000000000000007 R15: 00007f3c42d1e480
[ 990.283184]
[ 990.286447] \x0aShowing all locks held in the system:
[ 990.294992] 1 lock held by khungtaskd/187:
[ 990.300389] #0: ffffffffab4cde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 990.311854] 2 locks held by kworker/u129:8/290:
[ 990.317736] #0: ff1100180e4371e0 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2c/0x40
[ 990.328605] #1: ffffffffab4cde20 (rcu_read_lock){....}-{1:3}, at: __update_idle_core+0x5d/0x710
[ 990.339311] 4 locks held by python3/2739:
[ 990.344616] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.354419] #1: ff110001ed313888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.365393] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.376559] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.386672] 4 locks held by python3/4743:
[ 990.391975] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.401775] #1: ff11000193b2d688 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.412746] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.423909] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.434011]
[ 990.436480] =============================================\x0a
[ 1018.412081] kworker/u130:0 (178) used greatest stack depth: 23536 bytes left
[ 1112.621146] INFO: task python3:4743 blocked for more than 245 seconds.
[ 1112.629292] Not tainted 7.0.0-rc3-hfcr-g6dfdca9e0d67 #1
[ 1112.636531] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1112.646119] task:python3 state:D stack:25312 pid:4743 tgid:4743 ppid:4742 task_flags:0x400100 flags:0x00080002
[ 1112.659326] Call Trace:
[ 1112.662865]
[ 1112.666013] __schedule+0xad9/0x1490
[ 1112.670830] ? io_schedule_timeout+0x130/0x130
[ 1112.676616] ? find_held_lock+0x2b/0x80
[ 1112.681722] ? __lock_release.isra.0+0x59/0x170
[ 1112.687605] schedule+0xd4/0x260
[ 1112.692024] schedule_preempt_disabled+0x18/0x30
[ 1112.698005] __mutex_lock+0xd76/0x1f20
[ 1112.703012] ? threaded_store+0x132/0x220
[ 1112.708312] ? ww_mutex_lock+0x160/0x160
[ 1112.713511] ? selinux_inode_free_security+0x310/0x310
[ 1112.720080] ? cap_capable+0x1ed/0x3f0
[ 1112.725087] ? sysfs_file_ops+0x140/0x140
[ 1112.730385] ? threaded_store+0x132/0x220
[ 1112.735756] threaded_store+0x132/0x220
[ 1112.740859] ? tx_maxrate_store+0x4e0/0x4e0
[ 1112.746352] ? sysfs_file_ops+0x140/0x140
[ 1112.751648] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.756944] ? sysfs_kf_write+0x65/0x160
[ 1112.762144] kernfs_fop_write_iter+0x335/0x510
[ 1112.767928] ? kernfs_ops+0xf0/0xf0
[ 1112.772638] new_sync_write+0x308/0x6f0
[ 1112.777744] ? new_sync_read+0x6f0/0x6f0
[ 1112.782942] ? lock_acquire.part.0+0xbc/0x260
[ 1112.788629] ? ksys_write+0xff/0x200
[ 1112.793440] vfs_write+0x62a/0x980
[ 1112.798051] ksys_write+0xff/0x200
[ 1112.802665] ? __ia32_sys_read+0xc0/0xc0
[ 1112.807862] ? kernfs_fop_llseek+0x160/0x1f0
[ 1112.813452] ? rcu_is_watching+0x15/0xd0
[ 1112.818650] do_syscall_64+0xf3/0x5e0
[ 1112.823554] ? exc_page_fault+0x9e/0xb0
[ 1112.828653] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1112.835120] RIP: 0033:0x7fe0d407cc5e
[ 1112.839919] RSP: 002b:00007ffe54803d10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1112.849219] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe0d407cc5e
[ 1112.858023] RDX: 0000000000000001 RSI: 00005644cb5dccd0 RDI: 0000000000000007
[ 1112.866831] RBP: 00007ffe54803d20 R08: 0000000000000000 R09: 0000000000000000
[ 1112.875637] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe0d3f17e80
[ 1112.884444] R13: 00005644cb5dccd0 R14: 0000000000000007 R15: 00007fe0d477db98
[ 1112.893251]
[ 1112.896529] INFO: task python3:4743 is blocked on a mutex likely owned by task python3:2739.
[ 1112.906804] task:python3 state:D stack:25312 pid:2739 tgid:2739 ppid:2738 task_flags:0x400100 flags:0x00080802
[ 1112.920008] Call Trace:
[ 1112.923548]
[ 1112.926699] __schedule+0xad9/0x1490
[ 1112.931511] ? io_schedule_timeout+0x130/0x130
[ 1112.937293] ? find_held_lock+0x2b/0x80
[ 1112.942397] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1112.948577] schedule+0xd4/0x260
[ 1112.952992] schedule_timeout+0x103/0x260
[ 1112.958288] ? rcu_is_watching+0x15/0xd0
[ 1112.963486] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1112.969857] ? hrtimers_cpu_dying+0x250/0x250
[ 1112.975545] ? ww_mutex_lock+0x160/0x160
[ 1112.980746] msleep+0x1b/0x30
[ 1112.984871] napi_set_threaded+0x376/0x410
[ 1112.990259] ? napi_resume_irqs+0x1a0/0x1a0
[ 1112.995752] netif_set_threaded+0x254/0x400
[ 1113.001248] ? sysfs_file_ops+0x140/0x140
[ 1113.006546] threaded_store+0x1bb/0x220
[ 1113.011642] ? tx_maxrate_store+0x4e0/0x4e0
[ 1113.017132] ? sysfs_file_ops+0x140/0x140
[ 1113.022430] ? sysfs_file_kobj+0xbd/0x1e0
[ 1113.027716] ? sysfs_kf_write+0x65/0x160
[ 1113.032916] kernfs_fop_write_iter+0x335/0x510
[ 1113.038701] ? kernfs_ops+0xf0/0xf0
[ 1113.043412] new_sync_write+0x308/0x6f0
[ 1113.048517] ? new_sync_read+0x6f0/0x6f0
[ 1113.053719] ? lock_acquire.part.0+0xbc/0x260
[ 1113.059405] ? ksys_write+0xff/0x200
[ 1113.064216] vfs_write+0x62a/0x980
[ 1113.068831] ksys_write+0xff/0x200
[ 1113.073448] ? __ia32_sys_read+0xc0/0xc0
[ 1113.078645] ? kernfs_fop_llseek+0x160/0x1f0
[ 1113.084237] ? rcu_is_watching+0x15/0xd0
[ 1113.089439] do_syscall_64+0xf3/0x5e0
[ 1113.094346] ? exc_page_fault+0x9e/0xb0
[ 1113.099440] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1113.105901] RIP: 0033:0x7f3c42ef4c5e
[ 1113.110712] RSP: 002b:00007ffe5c37aa40 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1113.120014] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3c42ef4c5e
[ 1113.128823] RDX: 0000000000000001 RSI: 0000559910c42cd0 RDI: 0000000000000007
[ 1113.137629] RBP: 00007ffe5c37aa50 R08: 0000000000000000 R09: 0000000000000000
[ 1113.146439] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f3c42d8fe80
[ 1113.155246] R13: 0000559910c42cd0 R14: 0000000000000007 R15: 00007f3c42d1e480
[ 1113.164062]
[ 1113.167328] \x0aShowing all locks held in the system:
[ 1113.175858] 1 lock held by khungtaskd/187:
[ 1113.181253] #0: ffffffffab4cde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1113.192724] 2 locks held by systemd-journal/801:
[ 1113.198702] #0: ff1100180dcb71e0 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x18f/0x1490
[ 1113.208589] #1: ffffffffab6c8960 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire+0x7b/0x120
[ 1113.221408] 4 locks held by python3/2739:
[ 1113.226701] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.236494] #1: ff110001ed313888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.247458] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.258616] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.268710] 4 locks held by python3/4743:
[ 1113.274011] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.283802] #1: ff11000193b2d688 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.294766] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.305921] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.316016] 5 locks held by systemd/5875:
[ 1113.321308] #0: ff1100012e4643f8 (sb_writers#6){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.331100] #1: ff110001dc40ee88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.342064] #2: ffffffffab536c48 (cgroup_mutex){+.+.}-{4:4}, at: cgroup_lock_and_drain_offline+0xa6/0x560
[ 1113.353710] #3: ffffffffab368dd0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_update_dfl_csses+0x2a6/0x5c0
[ 1113.365256] #4: ffffffffab536950 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_update_dfl_csses+0x2b2/0x5c0
[ 1113.377583]
[ 1113.380050] =============================================\x0a
[ 1235.502511] INFO: task python3:4743 blocked for more than 368 seconds.
[ 1235.510660] Not tainted 7.0.0-rc3-hfcr-g6dfdca9e0d67 #1
[ 1235.517910] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1235.527498] task:python3 state:D stack:25312 pid:4743 tgid:4743 ppid:4742 task_flags:0x400100 flags:0x00080002
[ 1235.540701] Call Trace:
[ 1235.544238]
[ 1235.547386] __schedule+0xad9/0x1490
[ 1235.552202] ? io_schedule_timeout+0x130/0x130
[ 1235.557988] ? find_held_lock+0x2b/0x80
[ 1235.563090] ? __lock_release.isra.0+0x59/0x170
[ 1235.568974] schedule+0xd4/0x260
[ 1235.573382] schedule_preempt_disabled+0x18/0x30
[ 1235.579365] __mutex_lock+0xd76/0x1f20
[ 1235.584369] ? threaded_store+0x132/0x220
[ 1235.589665] ? ww_mutex_lock+0x160/0x160
[ 1235.594861] ? selinux_inode_free_security+0x310/0x310
[ 1235.601429] ? cap_capable+0x1ed/0x3f0
[ 1235.606440] ? sysfs_file_ops+0x140/0x140
[ 1235.611737] ? threaded_store+0x132/0x220
[ 1235.617033] threaded_store+0x132/0x220
[ 1235.622135] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.627627] ? sysfs_file_ops+0x140/0x140
[ 1235.632921] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.638215] ? sysfs_kf_write+0x65/0x160
[ 1235.643412] kernfs_fop_write_iter+0x335/0x510
[ 1235.649198] ? kernfs_ops+0xf0/0xf0
[ 1235.653907] new_sync_write+0x308/0x6f0
[ 1235.659009] ? new_sync_read+0x6f0/0x6f0
[ 1235.664210] ? lock_acquire.part.0+0xbc/0x260
[ 1235.669896] ? ksys_write+0xff/0x200
[ 1235.674705] vfs_write+0x62a/0x980
[ 1235.679321] ksys_write+0xff/0x200
[ 1235.683924] ? __ia32_sys_read+0xc0/0xc0
[ 1235.689119] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.694710] ? rcu_is_watching+0x15/0xd0
[ 1235.699911] do_syscall_64+0xf3/0x5e0
[ 1235.704816] ? exc_page_fault+0x9e/0xb0
[ 1235.709916] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.716384] RIP: 0033:0x7fe0d407cc5e
[ 1235.721192] RSP: 002b:00007ffe54803d10 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.730487] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fe0d407cc5e
[ 1235.739295] RDX: 0000000000000001 RSI: 00005644cb5dccd0 RDI: 0000000000000007
[ 1235.748101] RBP: 00007ffe54803d20 R08: 0000000000000000 R09: 0000000000000000
[ 1235.756908] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fe0d3f17e80
[ 1235.765705] R13: 00005644cb5dccd0 R14: 0000000000000007 R15: 00007fe0d477db98
[ 1235.774516]
[ 1235.777782] INFO: task python3:4743 is blocked on a mutex likely owned by task python3:2739.
[ 1235.788054] task:python3 state:D stack:25312 pid:2739 tgid:2739 ppid:2738 task_flags:0x400100 flags:0x00080802
[ 1235.801254] Call Trace:
[ 1235.804784]
[ 1235.807931] __schedule+0xad9/0x1490
[ 1235.812740] ? io_schedule_timeout+0x130/0x130
[ 1235.818525] ? find_held_lock+0x2b/0x80
[ 1235.823617] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1235.829795] schedule+0xd4/0x260
[ 1235.834213] schedule_timeout+0x103/0x260
[ 1235.839507] ? rcu_is_watching+0x15/0xd0
[ 1235.844705] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1235.851075] ? hrtimers_cpu_dying+0x250/0x250
[ 1235.856765] ? ww_mutex_lock+0x160/0x160
[ 1235.861961] msleep+0x1b/0x30
[ 1235.866088] napi_set_threaded+0x376/0x410
[ 1235.871481] ? napi_resume_irqs+0x1a0/0x1a0
[ 1235.876975] netif_set_threaded+0x254/0x400
[ 1235.882466] ? sysfs_file_ops+0x140/0x140
[ 1235.887761] threaded_store+0x1bb/0x220
[ 1235.892860] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.898350] ? sysfs_file_ops+0x140/0x140
[ 1235.903646] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.908942] ? sysfs_kf_write+0x65/0x160
[ 1235.914138] kernfs_fop_write_iter+0x335/0x510
[ 1235.919923] ? kernfs_ops+0xf0/0xf0
[ 1235.924625] new_sync_write+0x308/0x6f0
[ 1235.929727] ? new_sync_read+0x6f0/0x6f0
[ 1235.934927] ? lock_acquire.part.0+0xbc/0x260
[ 1235.940611] ? ksys_write+0xff/0x200
[ 1235.945424] vfs_write+0x62a/0x980
[ 1235.950036] ksys_write+0xff/0x200
[ 1235.954650] ? __ia32_sys_read+0xc0/0xc0
[ 1235.959845] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.965434] ? rcu_is_watching+0x15/0xd0
[ 1235.970631] do_syscall_64+0xf3/0x5e0
[ 1235.975535] ? exc_page_fault+0x9e/0xb0
[ 1235.980635] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.987100] RIP: 0033:0x7f3c42ef4c5e
[ 1235.991907] RSP: 002b:00007ffe5c37aa40 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1236.001204] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f3c42ef4c5e
[ 1236.010010] RDX: 0000000000000001 RSI: 0000559910c42cd0 RDI: 0000000000000007
[ 1236.018816] RBP: 00007ffe5c37aa50 R08: 0000000000000000 R09: 0000000000000000
[ 1236.027625] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f3c42d8fe80
[ 1236.036429] R13: 0000559910c42cd0 R14: 0000000000000007 R15: 00007f3c42d1e480
[ 1236.045240]
[ 1236.048508] \x0aShowing all locks held in the system:
[ 1236.057042] 1 lock held by khungtaskd/187:
[ 1236.062436] #0: ffffffffab4cde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1236.073916] 4 locks held by python3/2739:
[ 1236.079210] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.088998] #1: ff110001ed313888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.099961] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.111115] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.121206] 4 locks held by python3/4743:
[ 1236.126500] #0: ff1100012e36c3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.136288] #1: ff11000193b2d688 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.147250] #2: ff110001227d10f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.158407] #3: ff11000122829cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.168489]
[ 1236.170945] =============================================\x0a