[ 757.708596] nipa-hw-worker: drivers/net:napi_threaded.py: timed out
[ 757.711095] nipa-hw-worker: [4/37] Retrying drivers/net:napi_threaded.py
[ 757.847555] kselftest: Running tests in drivers/net
[ 989.709712] INFO: task python3:4937 blocked for more than 122 seconds.
[ 989.717939] Not tainted 7.0.0-rc3-cxth-g88c46ac3ff99 #1
[ 989.725187] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 989.734769] task:python3 state:D stack:25312 pid:4937 tgid:4937 ppid:4936 task_flags:0x400100 flags:0x00080002
[ 989.747975] Call Trace:
[ 989.751517]
[ 989.754670] __schedule+0xad9/0x1490
[ 989.759487] ? io_schedule_timeout+0x130/0x130
[ 989.765272] ? find_held_lock+0x2b/0x80
[ 989.770377] ? __lock_release.isra.0+0x59/0x170
[ 989.776254] schedule+0xd4/0x260
[ 989.780674] schedule_preempt_disabled+0x18/0x30
[ 989.786655] __mutex_lock+0xd76/0x1f20
[ 989.791653] ? threaded_store+0x132/0x220
[ 989.796953] ? ww_mutex_lock+0x160/0x160
[ 989.802142] ? selinux_inode_free_security+0x310/0x310
[ 989.808711] ? cap_capable+0x1ed/0x3f0
[ 989.813719] ? sysfs_file_ops+0x140/0x140
[ 989.819017] ? threaded_store+0x132/0x220
[ 989.824315] threaded_store+0x132/0x220
[ 989.829407] ? tx_maxrate_store+0x4e0/0x4e0
[ 989.834900] ? sysfs_file_ops+0x140/0x140
[ 989.840197] ? sysfs_file_kobj+0xbd/0x1e0
[ 989.845495] ? sysfs_kf_write+0x65/0x160
[ 989.850695] kernfs_fop_write_iter+0x335/0x510
[ 989.856480] ? kernfs_ops+0xf0/0xf0
[ 989.861184] new_sync_write+0x308/0x6f0
[ 989.866290] ? new_sync_read+0x6f0/0x6f0
[ 989.871491] ? lock_acquire.part.0+0xbc/0x260
[ 989.877176] ? ksys_write+0xff/0x200
[ 989.881989] vfs_write+0x62a/0x980
[ 989.886603] ksys_write+0xff/0x200
[ 989.891219] ? __ia32_sys_read+0xc0/0xc0
[ 989.896418] ? kernfs_fop_llseek+0x160/0x1f0
[ 989.901998] ? rcu_is_watching+0x15/0xd0
[ 989.907202] do_syscall_64+0xf3/0x5e0
[ 989.912108] ? irq_exit_rcu+0x39/0xf0
[ 989.917016] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 989.923475] RIP: 0033:0x7f612bc56c5e
[ 989.928284] RSP: 002b:00007ffdfd067560 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 989.937581] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f612bc56c5e
[ 989.946391] RDX: 0000000000000001 RSI: 0000556f91e9a110 RDI: 0000000000000007
[ 989.955198] RBP: 00007ffdfd067570 R08: 0000000000000000 R09: 0000000000000000
[ 989.964005] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f612baf1e80
[ 989.972814] R13: 0000556f91e9a110 R14: 0000000000000007 R15: 00007f612c357b98
[ 989.981629]
[ 989.984902] INFO: task python3:4937 is blocked on a mutex likely owned by task python3:3017.
[ 989.995175] task:python3 state:D stack:25312 pid:3017 tgid:3017 ppid:3016 task_flags:0x400100 flags:0x00080802
[ 990.008376] Call Trace:
[ 990.011915]
[ 990.015067] __schedule+0xad9/0x1490
[ 990.019882] ? io_schedule_timeout+0x130/0x130
[ 990.025666] ? find_held_lock+0x2b/0x80
[ 990.030768] ? __try_to_del_timer_sync+0x154/0x1f0
[ 990.036950] schedule+0xd4/0x260
[ 990.041369] schedule_timeout+0x103/0x260
[ 990.046667] ? rcu_is_watching+0x15/0xd0
[ 990.051866] ? hrtimer_nanosleep_restart+0x180/0x180
[ 990.058238] ? hrtimers_cpu_dying+0x250/0x250
[ 990.063928] ? ww_mutex_lock+0x160/0x160
[ 990.069127] msleep+0x1b/0x30
[ 990.073251] napi_set_threaded+0x376/0x410
[ 990.078648] ? napi_resume_irqs+0x1a0/0x1a0
[ 990.084144] netif_set_threaded+0x254/0x400
[ 990.089636] ? sysfs_file_ops+0x140/0x140
[ 990.094934] threaded_store+0x1bb/0x220
[ 990.100035] ? tx_maxrate_store+0x4e0/0x4e0
[ 990.105529] ? sysfs_file_ops+0x140/0x140
[ 990.110825] ? sysfs_file_kobj+0xbd/0x1e0
[ 990.116124] ? sysfs_kf_write+0x65/0x160
[ 990.121322] kernfs_fop_write_iter+0x335/0x510
[ 990.127110] ? kernfs_ops+0xf0/0xf0
[ 990.131820] new_sync_write+0x308/0x6f0
[ 990.136923] ? new_sync_read+0x6f0/0x6f0
[ 990.142126] ? lock_acquire.part.0+0xbc/0x260
[ 990.147812] ? ksys_write+0xff/0x200
[ 990.152626] vfs_write+0x62a/0x980
[ 990.157242] ksys_write+0xff/0x200
[ 990.161856] ? __ia32_sys_read+0xc0/0xc0
[ 990.167055] ? kernfs_fop_llseek+0x160/0x1f0
[ 990.172635] ? rcu_is_watching+0x15/0xd0
[ 990.177838] do_syscall_64+0xf3/0x5e0
[ 990.182742] ? exc_page_fault+0x9e/0xb0
[ 990.187847] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 990.194314] RIP: 0033:0x7f375981dc5e
[ 990.199122] RSP: 002b:00007fffa7a8a120 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 990.208418] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f375981dc5e
[ 990.217225] RDX: 0000000000000001 RSI: 0000563d4a883110 RDI: 0000000000000007
[ 990.226032] RBP: 00007fffa7a8a130 R08: 0000000000000000 R09: 0000000000000000
[ 990.234831] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f37596b8e80
[ 990.243630] R13: 0000563d4a883110 R14: 0000000000000007 R15: 00007f3759646480
[ 990.252444]
[ 990.255702] \x0aShowing all locks held in the system:
[ 990.264240] 1 lock held by khungtaskd/185:
[ 990.269635] #0: ffffffff89acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 990.281113] 4 locks held by python3/3017:
[ 990.286410] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.296204] #1: ff1100013bd58888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.307167] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.318327] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.328422] 4 locks held by python3/4937:
[ 990.333719] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 990.343508] #1: ff11000188381a88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 990.354470] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 990.365620] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 990.375713]
[ 990.378181] =============================================\x0a
[ 1083.406844] kworker/u129:2 (187) used greatest stack depth: 21192 bytes left
[ 1112.590310] INFO: task python3:4937 blocked for more than 245 seconds.
[ 1112.598460] Not tainted 7.0.0-rc3-cxth-g88c46ac3ff99 #1
[ 1112.605710] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1112.615301] task:python3 state:D stack:25312 pid:4937 tgid:4937 ppid:4936 task_flags:0x400100 flags:0x00080002
[ 1112.628508] Call Trace:
[ 1112.632046]
[ 1112.635199] __schedule+0xad9/0x1490
[ 1112.640017] ? io_schedule_timeout+0x130/0x130
[ 1112.645802] ? find_held_lock+0x2b/0x80
[ 1112.650908] ? __lock_release.isra.0+0x59/0x170
[ 1112.656793] schedule+0xd4/0x260
[ 1112.661211] schedule_preempt_disabled+0x18/0x30
[ 1112.667192] __mutex_lock+0xd76/0x1f20
[ 1112.672200] ? threaded_store+0x132/0x220
[ 1112.677503] ? ww_mutex_lock+0x160/0x160
[ 1112.682701] ? selinux_inode_free_security+0x310/0x310
[ 1112.689270] ? cap_capable+0x1ed/0x3f0
[ 1112.694281] ? sysfs_file_ops+0x140/0x140
[ 1112.699583] ? threaded_store+0x132/0x220
[ 1112.704881] threaded_store+0x132/0x220
[ 1112.709981] ? tx_maxrate_store+0x4e0/0x4e0
[ 1112.715475] ? sysfs_file_ops+0x140/0x140
[ 1112.720773] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.726072] ? sysfs_kf_write+0x65/0x160
[ 1112.731273] kernfs_fop_write_iter+0x335/0x510
[ 1112.737059] ? kernfs_ops+0xf0/0xf0
[ 1112.741772] new_sync_write+0x308/0x6f0
[ 1112.746878] ? new_sync_read+0x6f0/0x6f0
[ 1112.752077] ? lock_acquire.part.0+0xbc/0x260
[ 1112.757763] ? ksys_write+0xff/0x200
[ 1112.762578] vfs_write+0x62a/0x980
[ 1112.767192] ksys_write+0xff/0x200
[ 1112.771805] ? __ia32_sys_read+0xc0/0xc0
[ 1112.777004] ? kernfs_fop_llseek+0x160/0x1f0
[ 1112.782585] ? rcu_is_watching+0x15/0xd0
[ 1112.787780] do_syscall_64+0xf3/0x5e0
[ 1112.792688] ? irq_exit_rcu+0x39/0xf0
[ 1112.797598] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1112.804067] RIP: 0033:0x7f612bc56c5e
[ 1112.808877] RSP: 002b:00007ffdfd067560 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1112.818176] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f612bc56c5e
[ 1112.826985] RDX: 0000000000000001 RSI: 0000556f91e9a110 RDI: 0000000000000007
[ 1112.835794] RBP: 00007ffdfd067570 R08: 0000000000000000 R09: 0000000000000000
[ 1112.844603] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f612baf1e80
[ 1112.853410] R13: 0000556f91e9a110 R14: 0000000000000007 R15: 00007f612c357b98
[ 1112.862218]
[ 1112.865491] INFO: task python3:4937 is blocked on a mutex likely owned by task python3:3017.
[ 1112.875765] task:python3 state:D stack:25312 pid:3017 tgid:3017 ppid:3016 task_flags:0x400100 flags:0x00080802
[ 1112.888967] Call Trace:
[ 1112.892504]
[ 1112.895652] __schedule+0xad9/0x1490
[ 1112.900465] ? io_schedule_timeout+0x130/0x130
[ 1112.906250] ? find_held_lock+0x2b/0x80
[ 1112.911354] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1112.917531] schedule+0xd4/0x260
[ 1112.921950] schedule_timeout+0x103/0x260
[ 1112.927249] ? rcu_is_watching+0x15/0xd0
[ 1112.932448] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1112.938818] ? hrtimers_cpu_dying+0x250/0x250
[ 1112.944499] ? ww_mutex_lock+0x160/0x160
[ 1112.949697] msleep+0x1b/0x30
[ 1112.953825] napi_set_threaded+0x376/0x410
[ 1112.959221] ? napi_resume_irqs+0x1a0/0x1a0
[ 1112.964719] netif_set_threaded+0x254/0x400
[ 1112.970212] ? sysfs_file_ops+0x140/0x140
[ 1112.975500] threaded_store+0x1bb/0x220
[ 1112.980603] ? tx_maxrate_store+0x4e0/0x4e0
[ 1112.986096] ? sysfs_file_ops+0x140/0x140
[ 1112.991391] ? sysfs_file_kobj+0xbd/0x1e0
[ 1112.996690] ? sysfs_kf_write+0x65/0x160
[ 1113.001890] kernfs_fop_write_iter+0x335/0x510
[ 1113.007670] ? kernfs_ops+0xf0/0xf0
[ 1113.012383] new_sync_write+0x308/0x6f0
[ 1113.017479] ? new_sync_read+0x6f0/0x6f0
[ 1113.022679] ? lock_acquire.part.0+0xbc/0x260
[ 1113.028356] ? ksys_write+0xff/0x200
[ 1113.033169] vfs_write+0x62a/0x980
[ 1113.037784] ksys_write+0xff/0x200
[ 1113.042390] ? __ia32_sys_read+0xc0/0xc0
[ 1113.047588] ? kernfs_fop_llseek+0x160/0x1f0
[ 1113.053178] ? rcu_is_watching+0x15/0xd0
[ 1113.058368] do_syscall_64+0xf3/0x5e0
[ 1113.063272] ? exc_page_fault+0x9e/0xb0
[ 1113.068374] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1113.074843] RIP: 0033:0x7f375981dc5e
[ 1113.079650] RSP: 002b:00007fffa7a8a120 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1113.088947] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f375981dc5e
[ 1113.097753] RDX: 0000000000000001 RSI: 0000563d4a883110 RDI: 0000000000000007
[ 1113.106561] RBP: 00007fffa7a8a130 R08: 0000000000000000 R09: 0000000000000000
[ 1113.115369] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f37596b8e80
[ 1113.124169] R13: 0000563d4a883110 R14: 0000000000000007 R15: 00007f3759646480
[ 1113.132984]
[ 1113.136249] \x0aShowing all locks held in the system:
[ 1113.144789] 1 lock held by khungtaskd/185:
[ 1113.150185] #0: ffffffff89acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1113.161667] 4 locks held by python3/3017:
[ 1113.166954] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.176748] #1: ff1100013bd58888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.187712] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.198869] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.208961] 4 locks held by python3/4937:
[ 1113.214255] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1113.224044] #1: ff11000188381a88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1113.235007] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1113.246166] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1113.256260]
[ 1113.258725] =============================================\x0a
[ 1235.471788] INFO: task python3:4937 blocked for more than 368 seconds.
[ 1235.479930] Not tainted 7.0.0-rc3-cxth-g88c46ac3ff99 #1
[ 1235.487180] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1235.496772] task:python3 state:D stack:25312 pid:4937 tgid:4937 ppid:4936 task_flags:0x400100 flags:0x00080002
[ 1235.509981] Call Trace:
[ 1235.513523]
[ 1235.516676] __schedule+0xad9/0x1490
[ 1235.521487] ? io_schedule_timeout+0x130/0x130
[ 1235.527274] ? find_held_lock+0x2b/0x80
[ 1235.532380] ? __lock_release.isra.0+0x59/0x170
[ 1235.538266] schedule+0xd4/0x260
[ 1235.542686] schedule_preempt_disabled+0x18/0x30
[ 1235.548658] __mutex_lock+0xd76/0x1f20
[ 1235.553663] ? threaded_store+0x132/0x220
[ 1235.558961] ? ww_mutex_lock+0x160/0x160
[ 1235.564161] ? selinux_inode_free_security+0x310/0x310
[ 1235.570730] ? cap_capable+0x1ed/0x3f0
[ 1235.575740] ? sysfs_file_ops+0x140/0x140
[ 1235.581041] ? threaded_store+0x132/0x220
[ 1235.586337] threaded_store+0x132/0x220
[ 1235.591438] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.596934] ? sysfs_file_ops+0x140/0x140
[ 1235.602232] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.607528] ? sysfs_kf_write+0x65/0x160
[ 1235.612728] kernfs_fop_write_iter+0x335/0x510
[ 1235.618507] ? kernfs_ops+0xf0/0xf0
[ 1235.623219] new_sync_write+0x308/0x6f0
[ 1235.628313] ? new_sync_read+0x6f0/0x6f0
[ 1235.633514] ? lock_acquire.part.0+0xbc/0x260
[ 1235.639200] ? ksys_write+0xff/0x200
[ 1235.644015] vfs_write+0x62a/0x980
[ 1235.648629] ksys_write+0xff/0x200
[ 1235.653246] ? __ia32_sys_read+0xc0/0xc0
[ 1235.658445] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.664028] ? rcu_is_watching+0x15/0xd0
[ 1235.669230] do_syscall_64+0xf3/0x5e0
[ 1235.674137] ? irq_exit_rcu+0x39/0xf0
[ 1235.679045] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.685516] RIP: 0033:0x7f612bc56c5e
[ 1235.690327] RSP: 002b:00007ffdfd067560 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.699626] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f612bc56c5e
[ 1235.708436] RDX: 0000000000000001 RSI: 0000556f91e9a110 RDI: 0000000000000007
[ 1235.717245] RBP: 00007ffdfd067570 R08: 0000000000000000 R09: 0000000000000000
[ 1235.726055] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f612baf1e80
[ 1235.734866] R13: 0000556f91e9a110 R14: 0000000000000007 R15: 00007f612c357b98
[ 1235.743682]
[ 1235.746944] INFO: task python3:4937 is blocked on a mutex likely owned by task python3:3017.
[ 1235.757217] task:python3 state:D stack:25312 pid:3017 tgid:3017 ppid:3016 task_flags:0x400100 flags:0x00080802
[ 1235.770420] Call Trace:
[ 1235.773961]
[ 1235.777110] __schedule+0xad9/0x1490
[ 1235.781923] ? io_schedule_timeout+0x130/0x130
[ 1235.787707] ? find_held_lock+0x2b/0x80
[ 1235.792802] ? __try_to_del_timer_sync+0x154/0x1f0
[ 1235.798983] schedule+0xd4/0x260
[ 1235.803401] schedule_timeout+0x103/0x260
[ 1235.808695] ? rcu_is_watching+0x15/0xd0
[ 1235.813896] ? hrtimer_nanosleep_restart+0x180/0x180
[ 1235.820267] ? hrtimers_cpu_dying+0x250/0x250
[ 1235.825951] ? ww_mutex_lock+0x160/0x160
[ 1235.831149] msleep+0x1b/0x30
[ 1235.835278] napi_set_threaded+0x376/0x410
[ 1235.840674] ? napi_resume_irqs+0x1a0/0x1a0
[ 1235.846163] netif_set_threaded+0x254/0x400
[ 1235.851658] ? sysfs_file_ops+0x140/0x140
[ 1235.856953] threaded_store+0x1bb/0x220
[ 1235.862057] ? tx_maxrate_store+0x4e0/0x4e0
[ 1235.867551] ? sysfs_file_ops+0x140/0x140
[ 1235.872847] ? sysfs_file_kobj+0xbd/0x1e0
[ 1235.878144] ? sysfs_kf_write+0x65/0x160
[ 1235.883344] kernfs_fop_write_iter+0x335/0x510
[ 1235.889130] ? kernfs_ops+0xf0/0xf0
[ 1235.893839] new_sync_write+0x308/0x6f0
[ 1235.898940] ? new_sync_read+0x6f0/0x6f0
[ 1235.904141] ? lock_acquire.part.0+0xbc/0x260
[ 1235.909826] ? ksys_write+0xff/0x200
[ 1235.914640] vfs_write+0x62a/0x980
[ 1235.919254] ksys_write+0xff/0x200
[ 1235.923870] ? __ia32_sys_read+0xc0/0xc0
[ 1235.929069] ? kernfs_fop_llseek+0x160/0x1f0
[ 1235.934659] ? rcu_is_watching+0x15/0xd0
[ 1235.939859] do_syscall_64+0xf3/0x5e0
[ 1235.944766] ? exc_page_fault+0x9e/0xb0
[ 1235.949868] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 1235.956336] RIP: 0033:0x7f375981dc5e
[ 1235.961144] RSP: 002b:00007fffa7a8a120 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
[ 1235.970442] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f375981dc5e
[ 1235.979252] RDX: 0000000000000001 RSI: 0000563d4a883110 RDI: 0000000000000007
[ 1235.988065] RBP: 00007fffa7a8a130 R08: 0000000000000000 R09: 0000000000000000
[ 1235.996875] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f37596b8e80
[ 1236.005681] R13: 0000563d4a883110 R14: 0000000000000007 R15: 00007f3759646480
[ 1236.014496]
[ 1236.017765] \x0aShowing all locks held in the system:
[ 1236.026304] 1 lock held by khungtaskd/185:
[ 1236.031698] #0: ffffffff89acde20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire.constprop.0+0x7/0x30
[ 1236.043182] 4 locks held by python3/3017:
[ 1236.048477] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.058269] #1: ff1100013bd58888 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.069224] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.080380] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.090472] 4 locks held by python3/4937:
[ 1236.095768] #0: ff1100012d9ec3f8 (sb_writers#4){.+.+}-{0:0}, at: ksys_write+0xff/0x200
[ 1236.105557] #1: ff11000188381a88 (&of->mutex#2){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x247/0x510
[ 1236.116521] #2: ff110001207cb0f0 (kn->active#127){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x29e/0x510
[ 1236.127679] #3: ff11000120889cb8 (&dev->lock){+.+.}-{4:4}, at: threaded_store+0x132/0x220
[ 1236.137775]
[ 1236.140241] =============================================\x0a