[ 4161.802410][T13635] pktgen: Packet Generator for packet performance testing. Version: 2.75 [ 4302.453109][ T44] INFO: task modprobe:13635 blocked for more than 122 seconds. [ 4302.453629][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4302.453857][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4302.454258][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4302.454774][ T44] Call Trace: [ 4302.454961][ T44] [ 4302.455095][ T44] __schedule+0x880/0x1b10 [ 4302.455337][ T44] ? io_schedule_timeout+0x150/0x150 [ 4302.455572][ T44] ? schedule+0x1ee/0x270 [ 4302.455735][ T44] ? __lock_release+0x5d/0x170 [ 4302.455964][ T44] schedule+0xe2/0x270 [ 4302.456148][ T44] schedule_preempt_disabled+0x18/0x30 [ 4302.456369][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4302.456589][ T44] ? __lock_acquire+0x449/0x7e0 [ 4302.456806][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4302.457031][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.457266][ T44] ? lock_acquire+0x104/0x160 [ 4302.457483][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4302.457719][ T44] down_write+0x1d6/0x200 [ 4302.457885][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4302.458162][ T44] ? find_held_lock+0x2b/0x80 [ 4302.458386][ T44] ? __create_object+0x5e/0xb0 [ 4302.458608][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4302.458881][ T44] register_pernet_subsys+0x1a/0x40 [ 4302.459108][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4302.459340][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4302.459610][ T44] do_one_initcall+0x8c/0x1d0 [ 4302.459832][ T44] ? trace_initcall_start+0x130/0x130 [ 4302.460060][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.460281][ T44] ? trace_kmalloc+0x26/0xd0 [ 4302.460837][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4302.461078][ T44] ? debug_objects_oom+0x160/0x160 [ 4302.461309][ T44] ? kasan_unpoison+0x27/0x50 [ 4302.461527][ T44] ? __asan_register_globals+0x5d/0x70 [ 4302.461751][ T44] do_init_module+0x27a/0x860 [ 4302.461978][ T44] ? free_module+0x2f0/0x2f0 [ 4302.462203][ T44] ? kfree+0x21d/0x540 [ 4302.462370][ T44] ? load_module+0x20c5/0x2dd0 [ 4302.462595][ T44] load_module+0x1f40/0x2dd0 [ 4302.462825][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4302.463109][ T44] ? kernel_read_file+0x3ed/0x550 [ 4302.463333][ T44] ? kernel_read_file+0x3c8/0x550 [ 4302.463553][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4302.463778][ T44] ? init_module_from_file+0xe9/0x150 [ 4302.463996][ T44] init_module_from_file+0xe9/0x150 [ 4302.464222][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4302.464458][ T44] ? idempotent_init_module+0x316/0x610 [ 4302.464681][ T44] ? __lock_release+0x5d/0x170 [ 4302.464902][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4302.465131][ T44] idempotent_init_module+0x331/0x610 [ 4302.465357][ T44] ? init_module_from_file+0x150/0x150 [ 4302.465586][ T44] ? cap_capable+0x94/0x230 [ 4302.465812][ T44] __x64_sys_finit_module+0xca/0x150 [ 4302.466028][ T44] ? do_syscall_64+0x85/0xfd0 [ 4302.466273][ T44] do_syscall_64+0xc1/0xfd0 [ 4302.466496][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4302.466773][ T44] RIP: 0033:0x7f0ee345e92d [ 4302.467001][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4302.467343][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4302.467674][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4302.468010][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4302.468352][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4302.468683][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4302.469026][ T44] [ 4302.469226][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4302.469698][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4302.470244][ T44] Workqueue: netns cleanup_net [ 4302.470471][ T44] Call Trace: [ 4302.470638][ T44] [ 4302.470765][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4302.470998][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4302.471227][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.471454][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.471674][ T44] ? __schedule+0x888/0x1b10 [ 4302.471895][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4302.472128][ T44] ? irqentry_exit+0x3b/0x80 [ 4302.472346][ T44] ? common_interrupt+0x9b/0xe0 [ 4302.472571][ T44] ? asm_common_interrupt+0x26/0x40 [ 4302.472800][ T44] ? nf_ct_iterate_cleanup+0x8d/0x340 [nf_conntrack] [ 4302.473094][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4302.473432][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4302.473764][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4302.474114][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4302.474401][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4302.474681][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4302.474902][ T44] ? ops_undo_list+0x2bf/0x890 [ 4302.475133][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4302.475353][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4302.475578][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4302.475804][ T44] ? net_passive_dec+0x190/0x190 [ 4302.476025][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.476253][ T44] ? process_one_work+0xe35/0x1650 [ 4302.476485][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4302.476710][ T44] ? assign_work+0x168/0x240 [ 4302.476929][ T44] ? worker_thread+0x591/0xcf0 [ 4302.477162][ T44] ? rescuer_thread+0xd10/0xd10 [ 4302.477384][ T44] ? kthread+0x37b/0x5f0 [ 4302.477559][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4302.477773][ T44] ? ret_from_fork+0x1b/0x270 [ 4302.477990][ T44] ? __lock_release+0x5d/0x170 [ 4302.478215][ T44] ? rcu_is_watching+0x12/0xb0 [ 4302.478434][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4302.478653][ T44] ? ret_from_fork+0x1db/0x270 [ 4302.478868][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4302.479091][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4302.479332][ T44] [ 4302.479503][ T44] [ 4302.479503][ T44] Showing all locks held in the system: [ 4302.479823][ T44] 1 lock held by khungtaskd/44: [ 4302.480044][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4302.480427][ T44] 5 locks held by kworker/u16:1/69: [ 4302.480655][ T44] 1 lock held by modprobe/13635: [ 4302.480875][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4302.481315][ T44] [ 4302.481425][ T44] ============================================= [ 4302.481425][ T44] [ 4425.332117][ T44] INFO: task modprobe:13635 blocked for more than 245 seconds. [ 4425.332527][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4425.332766][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4425.333173][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4425.333671][ T44] Call Trace: [ 4425.333838][ T44] [ 4425.333955][ T44] __schedule+0x880/0x1b10 [ 4425.334204][ T44] ? io_schedule_timeout+0x150/0x150 [ 4425.334438][ T44] ? schedule+0x1ee/0x270 [ 4425.334615][ T44] ? __lock_release+0x5d/0x170 [ 4425.334851][ T44] schedule+0xe2/0x270 [ 4425.335019][ T44] schedule_preempt_disabled+0x18/0x30 [ 4425.335253][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4425.335477][ T44] ? __lock_acquire+0x449/0x7e0 [ 4425.335709][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4425.335939][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.336167][ T44] ? lock_acquire+0x104/0x160 [ 4425.336395][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4425.336634][ T44] down_write+0x1d6/0x200 [ 4425.336802][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4425.337086][ T44] ? find_held_lock+0x2b/0x80 [ 4425.337309][ T44] ? __create_object+0x5e/0xb0 [ 4425.337533][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4425.337819][ T44] register_pernet_subsys+0x1a/0x40 [ 4425.338062][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4425.338289][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4425.338569][ T44] do_one_initcall+0x8c/0x1d0 [ 4425.338798][ T44] ? trace_initcall_start+0x130/0x130 [ 4425.339017][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.339249][ T44] ? trace_kmalloc+0x26/0xd0 [ 4425.339469][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4425.339695][ T44] ? debug_objects_oom+0x160/0x160 [ 4425.339936][ T44] ? kasan_unpoison+0x27/0x50 [ 4425.340182][ T44] ? __asan_register_globals+0x5d/0x70 [ 4425.340409][ T44] do_init_module+0x27a/0x860 [ 4425.340643][ T44] ? free_module+0x2f0/0x2f0 [ 4425.340863][ T44] ? kfree+0x21d/0x540 [ 4425.341029][ T44] ? load_module+0x20c5/0x2dd0 [ 4425.341267][ T44] load_module+0x1f40/0x2dd0 [ 4425.341503][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4425.341790][ T44] ? kernel_read_file+0x3ed/0x550 [ 4425.342014][ T44] ? kernel_read_file+0x3c8/0x550 [ 4425.342250][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4425.342476][ T44] ? init_module_from_file+0xe9/0x150 [ 4425.342707][ T44] init_module_from_file+0xe9/0x150 [ 4425.342927][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4425.343181][ T44] ? idempotent_init_module+0x316/0x610 [ 4425.343400][ T44] ? __lock_release+0x5d/0x170 [ 4425.343632][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4425.343854][ T44] idempotent_init_module+0x331/0x610 [ 4425.344089][ T44] ? init_module_from_file+0x150/0x150 [ 4425.344321][ T44] ? cap_capable+0x94/0x230 [ 4425.344558][ T44] __x64_sys_finit_module+0xca/0x150 [ 4425.344793][ T44] ? do_syscall_64+0x85/0xfd0 [ 4425.345020][ T44] do_syscall_64+0xc1/0xfd0 [ 4425.345255][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4425.345527][ T44] RIP: 0033:0x7f0ee345e92d [ 4425.345773][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4425.346116][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4425.346457][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4425.346794][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4425.347137][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4425.347467][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4425.347833][ T44] [ 4425.348019][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4425.348499][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4425.349058][ T44] Workqueue: netns cleanup_net [ 4425.349283][ T44] Call Trace: [ 4425.349464][ T44] [ 4425.349588][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4425.349813][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4425.350051][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.350290][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.350515][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.350741][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4425.350964][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.351204][ T44] ? irqentry_exit+0x3b/0x80 [ 4425.351425][ T44] ? io_schedule_timeout+0x150/0x150 [ 4425.351658][ T44] ? asm_common_interrupt+0x26/0x40 [ 4425.351891][ T44] ? nf_ct_iterate_cleanup+0x98/0x340 [nf_conntrack] [ 4425.352194][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4425.352534][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4425.352887][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4425.353240][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4425.353526][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4425.353820][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4425.354056][ T44] ? ops_undo_list+0x2bf/0x890 [ 4425.354282][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4425.354507][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4425.354742][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4425.354962][ T44] ? net_passive_dec+0x190/0x190 [ 4425.355198][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.355421][ T44] ? process_one_work+0xe35/0x1650 [ 4425.355663][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4425.355890][ T44] ? assign_work+0x168/0x240 [ 4425.356134][ T44] ? worker_thread+0x591/0xcf0 [ 4425.356362][ T44] ? rescuer_thread+0xd10/0xd10 [ 4425.356590][ T44] ? kthread+0x37b/0x5f0 [ 4425.356758][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4425.356974][ T44] ? ret_from_fork+0x1b/0x270 [ 4425.357203][ T44] ? __lock_release+0x5d/0x170 [ 4425.357427][ T44] ? rcu_is_watching+0x12/0xb0 [ 4425.357659][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4425.357881][ T44] ? ret_from_fork+0x1db/0x270 [ 4425.358113][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4425.358333][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4425.358576][ T44] [ 4425.358748][ T44] [ 4425.358748][ T44] Showing all locks held in the system: [ 4425.359073][ T44] 1 lock held by khungtaskd/44: [ 4425.359288][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4425.359690][ T44] 4 locks held by kworker/u16:1/69: [ 4425.359916][ T44] 1 lock held by modprobe/13635: [ 4425.360139][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4425.360585][ T44] [ 4425.360693][ T44] ============================================= [ 4425.360693][ T44] [ 4548.213096][ T44] INFO: task modprobe:13635 blocked for more than 368 seconds. [ 4548.213467][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4548.213680][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4548.214068][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4548.214553][ T44] Call Trace: [ 4548.214717][ T44] [ 4548.214832][ T44] __schedule+0x880/0x1b10 [ 4548.215075][ T44] ? io_schedule_timeout+0x150/0x150 [ 4548.215308][ T44] ? schedule+0x1ee/0x270 [ 4548.215472][ T44] ? __lock_release+0x5d/0x170 [ 4548.215703][ T44] schedule+0xe2/0x270 [ 4548.215868][ T44] schedule_preempt_disabled+0x18/0x30 [ 4548.216098][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4548.216320][ T44] ? __lock_acquire+0x449/0x7e0 [ 4548.216536][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4548.216762][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.216980][ T44] ? lock_acquire+0x104/0x160 [ 4548.217210][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4548.217436][ T44] down_write+0x1d6/0x200 [ 4548.217602][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4548.217869][ T44] ? find_held_lock+0x2b/0x80 [ 4548.218100][ T44] ? __create_object+0x5e/0xb0 [ 4548.218325][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4548.218594][ T44] register_pernet_subsys+0x1a/0x40 [ 4548.218818][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4548.219049][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4548.219322][ T44] do_one_initcall+0x8c/0x1d0 [ 4548.219553][ T44] ? trace_initcall_start+0x130/0x130 [ 4548.219771][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.219987][ T44] ? trace_kmalloc+0x26/0xd0 [ 4548.220212][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4548.220433][ T44] ? debug_objects_oom+0x160/0x160 [ 4548.220650][ T44] ? kasan_unpoison+0x27/0x50 [ 4548.220870][ T44] ? __asan_register_globals+0x5d/0x70 [ 4548.221101][ T44] do_init_module+0x27a/0x860 [ 4548.221329][ T44] ? free_module+0x2f0/0x2f0 [ 4548.221544][ T44] ? kfree+0x21d/0x540 [ 4548.221708][ T44] ? load_module+0x20c5/0x2dd0 [ 4548.221932][ T44] load_module+0x1f40/0x2dd0 [ 4548.222175][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4548.222446][ T44] ? kernel_read_file+0x3ed/0x550 [ 4548.222664][ T44] ? kernel_read_file+0x3c8/0x550 [ 4548.222884][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4548.223118][ T44] ? init_module_from_file+0xe9/0x150 [ 4548.223335][ T44] init_module_from_file+0xe9/0x150 [ 4548.223552][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4548.223788][ T44] ? idempotent_init_module+0x316/0x610 [ 4548.224005][ T44] ? __lock_release+0x5d/0x170 [ 4548.224235][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4548.224455][ T44] idempotent_init_module+0x331/0x610 [ 4548.224673][ T44] ? init_module_from_file+0x150/0x150 [ 4548.224902][ T44] ? cap_capable+0x94/0x230 [ 4548.225136][ T44] __x64_sys_finit_module+0xca/0x150 [ 4548.225358][ T44] ? do_syscall_64+0x85/0xfd0 [ 4548.225577][ T44] do_syscall_64+0xc1/0xfd0 [ 4548.225796][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4548.226078][ T44] RIP: 0033:0x7f0ee345e92d [ 4548.226307][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4548.226634][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4548.226963][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4548.227300][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4548.227626][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4548.227951][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4548.228308][ T44] [ 4548.228487][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4548.228947][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4548.229485][ T44] Workqueue: netns cleanup_net [ 4548.229721][ T44] Call Trace: [ 4548.229884][ T44] [ 4548.230000][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4548.230232][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4548.230452][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.230673][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.230892][ T44] ? trace_sched_entry_tp+0x3d/0x130 [ 4548.231122][ T44] ? __mutex_lock+0x19f/0x1190 [ 4548.231339][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4548.231563][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.231783][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 4548.232069][ T44] ? irqentry_exit+0x3b/0x80 [ 4548.232288][ T44] ? common_interrupt+0x9b/0xe0 [ 4548.232505][ T44] ? asm_common_interrupt+0x26/0x40 [ 4548.232732][ T44] ? nf_ct_iterate_cleanup+0x79/0x340 [nf_conntrack] [ 4548.233020][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4548.233368][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4548.233702][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4548.234048][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4548.234334][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4548.234614][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4548.234838][ T44] ? ops_undo_list+0x2bf/0x890 [ 4548.235072][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4548.235290][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4548.235515][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4548.235733][ T44] ? net_passive_dec+0x190/0x190 [ 4548.235954][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.236187][ T44] ? process_one_work+0xe35/0x1650 [ 4548.236421][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4548.236646][ T44] ? assign_work+0x168/0x240 [ 4548.236866][ T44] ? worker_thread+0x591/0xcf0 [ 4548.237102][ T44] ? rescuer_thread+0xd10/0xd10 [ 4548.237322][ T44] ? kthread+0x37b/0x5f0 [ 4548.237488][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4548.237703][ T44] ? ret_from_fork+0x1b/0x270 [ 4548.237919][ T44] ? __lock_release+0x5d/0x170 [ 4548.238152][ T44] ? rcu_is_watching+0x12/0xb0 [ 4548.238370][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4548.238587][ T44] ? ret_from_fork+0x1db/0x270 [ 4548.238804][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4548.239019][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4548.239261][ T44] [ 4548.239431][ T44] [ 4548.239431][ T44] Showing all locks held in the system: [ 4548.239754][ T44] 1 lock held by khungtaskd/44: [ 4548.239968][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4548.240357][ T44] 4 locks held by kworker/u16:1/69: [ 4548.240581][ T44] 1 lock held by modprobe/13635: [ 4548.240788][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4548.241228][ T44] [ 4548.241334][ T44] ============================================= [ 4548.241334][ T44] [ 4671.093268][ T44] INFO: task modprobe:13635 blocked for more than 491 seconds. [ 4671.093912][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4671.094158][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4671.094540][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4671.095052][ T44] Call Trace: [ 4671.095233][ T44] [ 4671.095347][ T44] __schedule+0x880/0x1b10 [ 4671.095604][ T44] ? io_schedule_timeout+0x150/0x150 [ 4671.095843][ T44] ? schedule+0x1ee/0x270 [ 4671.096014][ T44] ? __lock_release+0x5d/0x170 [ 4671.096265][ T44] schedule+0xe2/0x270 [ 4671.096431][ T44] schedule_preempt_disabled+0x18/0x30 [ 4671.096669][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4671.096901][ T44] ? __lock_acquire+0x449/0x7e0 [ 4671.097139][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4671.097371][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.097595][ T44] ? lock_acquire+0x104/0x160 [ 4671.097813][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4671.098050][ T44] down_write+0x1d6/0x200 [ 4671.098221][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4671.098498][ T44] ? find_held_lock+0x2b/0x80 [ 4671.098721][ T44] ? __create_object+0x5e/0xb0 [ 4671.098961][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4671.099249][ T44] register_pernet_subsys+0x1a/0x40 [ 4671.099472][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4671.099697][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4671.099967][ T44] do_one_initcall+0x8c/0x1d0 [ 4671.100206][ T44] ? trace_initcall_start+0x130/0x130 [ 4671.100427][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.100649][ T44] ? trace_kmalloc+0x26/0xd0 [ 4671.100868][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4671.101097][ T44] ? debug_objects_oom+0x160/0x160 [ 4671.101321][ T44] ? kasan_unpoison+0x27/0x50 [ 4671.101539][ T44] ? __asan_register_globals+0x5d/0x70 [ 4671.101767][ T44] do_init_module+0x27a/0x860 [ 4671.101995][ T44] ? free_module+0x2f0/0x2f0 [ 4671.102222][ T44] ? kfree+0x21d/0x540 [ 4671.102388][ T44] ? load_module+0x20c5/0x2dd0 [ 4671.102614][ T44] load_module+0x1f40/0x2dd0 [ 4671.102846][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4671.103131][ T44] ? kernel_read_file+0x3ed/0x550 [ 4671.103354][ T44] ? kernel_read_file+0x3c8/0x550 [ 4671.103579][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4671.103805][ T44] ? init_module_from_file+0xe9/0x150 [ 4671.104025][ T44] init_module_from_file+0xe9/0x150 [ 4671.104256][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4671.104491][ T44] ? idempotent_init_module+0x316/0x610 [ 4671.104708][ T44] ? __lock_release+0x5d/0x170 [ 4671.104929][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4671.105169][ T44] idempotent_init_module+0x331/0x610 [ 4671.105395][ T44] ? init_module_from_file+0x150/0x150 [ 4671.105627][ T44] ? cap_capable+0x94/0x230 [ 4671.105852][ T44] __x64_sys_finit_module+0xca/0x150 [ 4671.106084][ T44] ? do_syscall_64+0x85/0xfd0 [ 4671.106308][ T44] do_syscall_64+0xc1/0xfd0 [ 4671.106531][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4671.106808][ T44] RIP: 0033:0x7f0ee345e92d [ 4671.107055][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4671.107391][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4671.107722][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4671.108064][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4671.108402][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4671.108749][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4671.109130][ T44] [ 4671.109310][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4671.109786][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4671.110345][ T44] Workqueue: netns cleanup_net [ 4671.110568][ T44] Call Trace: [ 4671.110734][ T44] [ 4671.110852][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4671.111086][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4671.111312][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.111540][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.111762][ T44] ? trace_contention_end+0xd8/0x140 [ 4671.111985][ T44] ? __mutex_lock+0x19f/0x1190 [ 4671.112214][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4671.112441][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.112663][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 4671.112941][ T44] ? common_interrupt+0x9b/0xe0 [ 4671.113188][ T44] ? nf_ct_iterate_cleanup+0x6a/0x340 [nf_conntrack] [ 4671.113480][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4671.113820][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4671.114168][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4671.114510][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4671.114802][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4671.115092][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4671.115317][ T44] ? ops_undo_list+0x2bf/0x890 [ 4671.115544][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4671.115762][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4671.115990][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4671.116221][ T44] ? net_passive_dec+0x190/0x190 [ 4671.116448][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.116670][ T44] ? process_one_work+0xe35/0x1650 [ 4671.116901][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4671.117141][ T44] ? assign_work+0x168/0x240 [ 4671.117366][ T44] ? worker_thread+0x591/0xcf0 [ 4671.117594][ T44] ? rescuer_thread+0xd10/0xd10 [ 4671.117813][ T44] ? kthread+0x37b/0x5f0 [ 4671.117986][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4671.118215][ T44] ? ret_from_fork+0x1b/0x270 [ 4671.118435][ T44] ? __lock_release+0x5d/0x170 [ 4671.118658][ T44] ? rcu_is_watching+0x12/0xb0 [ 4671.118888][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4671.119128][ T44] ? ret_from_fork+0x1db/0x270 [ 4671.119347][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4671.119566][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4671.119803][ T44] [ 4671.119983][ T44] [ 4671.119983][ T44] Showing all locks held in the system: [ 4671.120311][ T44] 1 lock held by khungtaskd/44: [ 4671.120523][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4671.120909][ T44] 5 locks held by kworker/u16:1/69: [ 4671.121143][ T44] 1 lock held by modprobe/13635: [ 4671.121355][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4671.121792][ T44] [ 4671.121897][ T44] ============================================= [ 4671.121897][ T44] [ 4793.973247][ T44] INFO: task modprobe:13635 blocked for more than 614 seconds. [ 4793.973933][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4793.974186][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4793.974560][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4793.975099][ T44] Call Trace: [ 4793.975266][ T44] [ 4793.975394][ T44] __schedule+0x880/0x1b10 [ 4793.975624][ T44] ? io_schedule_timeout+0x150/0x150 [ 4793.975874][ T44] ? schedule+0x1ee/0x270 [ 4793.976052][ T44] ? __lock_release+0x5d/0x170 [ 4793.976303][ T44] schedule+0xe2/0x270 [ 4793.976473][ T44] schedule_preempt_disabled+0x18/0x30 [ 4793.976707][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4793.976916][ T44] ? __lock_acquire+0x449/0x7e0 [ 4793.977177][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4793.977407][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.977646][ T44] ? lock_acquire+0x104/0x160 [ 4793.977861][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4793.978105][ T44] down_write+0x1d6/0x200 [ 4793.978300][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4793.978570][ T44] ? find_held_lock+0x2b/0x80 [ 4793.978803][ T44] ? __create_object+0x5e/0xb0 [ 4793.979021][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4793.979316][ T44] register_pernet_subsys+0x1a/0x40 [ 4793.979559][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4793.979790][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4793.980092][ T44] do_one_initcall+0x8c/0x1d0 [ 4793.980311][ T44] ? trace_initcall_start+0x130/0x130 [ 4793.980542][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.980769][ T44] ? trace_kmalloc+0x26/0xd0 [ 4793.980983][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4793.981245][ T44] ? debug_objects_oom+0x160/0x160 [ 4793.981462][ T44] ? kasan_unpoison+0x27/0x50 [ 4793.981711][ T44] ? __asan_register_globals+0x5d/0x70 [ 4793.981929][ T44] do_init_module+0x27a/0x860 [ 4793.982181][ T44] ? free_module+0x2f0/0x2f0 [ 4793.982407][ T44] ? kfree+0x21d/0x540 [ 4793.982569][ T44] ? load_module+0x20c5/0x2dd0 [ 4793.982817][ T44] load_module+0x1f40/0x2dd0 [ 4793.983054][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4793.983347][ T44] ? kernel_read_file+0x3ed/0x550 [ 4793.983577][ T44] ? kernel_read_file+0x3c8/0x550 [ 4793.983799][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4793.984034][ T44] ? init_module_from_file+0xe9/0x150 [ 4793.984279][ T44] init_module_from_file+0xe9/0x150 [ 4793.984502][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4793.984740][ T44] ? idempotent_init_module+0x316/0x610 [ 4793.984959][ T44] ? __lock_release+0x5d/0x170 [ 4793.985193][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4793.985415][ T44] idempotent_init_module+0x331/0x610 [ 4793.985638][ T44] ? init_module_from_file+0x150/0x150 [ 4793.985871][ T44] ? cap_capable+0x94/0x230 [ 4793.986112][ T44] __x64_sys_finit_module+0xca/0x150 [ 4793.986332][ T44] ? do_syscall_64+0x85/0xfd0 [ 4793.986554][ T44] do_syscall_64+0xc1/0xfd0 [ 4793.986776][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4793.987057][ T44] RIP: 0033:0x7f0ee345e92d [ 4793.987289][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4793.987622][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4793.987956][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4793.988306][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4793.988636][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4793.988964][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4793.989324][ T44] [ 4793.989507][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4793.989974][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4793.990522][ T44] Workqueue: netns cleanup_net [ 4793.990752][ T44] Call Trace: [ 4793.990915][ T44] [ 4793.991033][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4793.991267][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4793.991487][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.991709][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.991929][ T44] ? trace_contention_end+0xd8/0x140 [ 4793.992158][ T44] ? __mutex_lock+0x19f/0x1190 [ 4793.992395][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4793.992642][ T44] ? nf_ct_iterate_cleanup+0x4a/0x340 [nf_conntrack] [ 4793.992929][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4793.993278][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4793.993617][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4793.993962][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4793.994263][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4793.994545][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4793.994769][ T44] ? ops_undo_list+0x2bf/0x890 [ 4793.994995][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4793.995222][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4793.995451][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4793.995678][ T44] ? net_passive_dec+0x190/0x190 [ 4793.995899][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.996148][ T44] ? process_one_work+0xe35/0x1650 [ 4793.996380][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4793.996608][ T44] ? assign_work+0x168/0x240 [ 4793.996833][ T44] ? worker_thread+0x591/0xcf0 [ 4793.997068][ T44] ? rescuer_thread+0xd10/0xd10 [ 4793.997293][ T44] ? kthread+0x37b/0x5f0 [ 4793.997464][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4793.997683][ T44] ? ret_from_fork+0x1b/0x270 [ 4793.997904][ T44] ? __lock_release+0x5d/0x170 [ 4793.998138][ T44] ? rcu_is_watching+0x12/0xb0 [ 4793.998378][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4793.998599][ T44] ? ret_from_fork+0x1db/0x270 [ 4793.998817][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4793.999036][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4793.999286][ T44] [ 4793.999467][ T44] [ 4793.999467][ T44] Showing all locks held in the system: [ 4793.999789][ T44] 1 lock held by khungtaskd/44: [ 4794.000002][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4794.000396][ T44] 4 locks held by kworker/u16:1/69: [ 4794.000619][ T44] 1 lock held by modprobe/13635: [ 4794.000833][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4794.001277][ T44] [ 4794.001384][ T44] ============================================= [ 4794.001384][ T44] [ 4916.853116][ T44] INFO: task modprobe:13635 blocked for more than 737 seconds. [ 4916.853649][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 4916.853871][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4916.854292][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 4916.854865][ T44] Call Trace: [ 4916.855064][ T44] [ 4916.855218][ T44] __schedule+0x880/0x1b10 [ 4916.855528][ T44] ? io_schedule_timeout+0x150/0x150 [ 4916.855831][ T44] ? schedule+0x1ee/0x270 [ 4916.856069][ T44] ? __lock_release+0x5d/0x170 [ 4916.856309][ T44] schedule+0xe2/0x270 [ 4916.856482][ T44] schedule_preempt_disabled+0x18/0x30 [ 4916.856718][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 4916.856996][ T44] ? __lock_acquire+0x449/0x7e0 [ 4916.857299][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 4916.857611][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.857875][ T44] ? lock_acquire+0x104/0x160 [ 4916.858113][ T44] ? register_pernet_subsys+0x1a/0x40 [ 4916.858410][ T44] down_write+0x1d6/0x200 [ 4916.858629][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 4916.858994][ T44] ? find_held_lock+0x2b/0x80 [ 4916.859312][ T44] ? __create_object+0x5e/0xb0 [ 4916.859607][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4916.859968][ T44] register_pernet_subsys+0x1a/0x40 [ 4916.860260][ T44] pg_init+0x2c/0x1000 [pktgen] [ 4916.860494][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 4916.860800][ T44] do_one_initcall+0x8c/0x1d0 [ 4916.861107][ T44] ? trace_initcall_start+0x130/0x130 [ 4916.861397][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.861683][ T44] ? trace_kmalloc+0x26/0xd0 [ 4916.861909][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 4916.862142][ T44] ? debug_objects_oom+0x160/0x160 [ 4916.862434][ T44] ? kasan_unpoison+0x27/0x50 [ 4916.862723][ T44] ? __asan_register_globals+0x5d/0x70 [ 4916.862963][ T44] do_init_module+0x27a/0x860 [ 4916.863237][ T44] ? free_module+0x2f0/0x2f0 [ 4916.863527][ T44] ? kfree+0x21d/0x540 [ 4916.863737][ T44] ? load_module+0x20c5/0x2dd0 [ 4916.863973][ T44] load_module+0x1f40/0x2dd0 [ 4916.864282][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 4916.864643][ T44] ? kernel_read_file+0x3ed/0x550 [ 4916.864937][ T44] ? kernel_read_file+0x3c8/0x550 [ 4916.865227][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 4916.865462][ T44] ? init_module_from_file+0xe9/0x150 [ 4916.865692][ T44] init_module_from_file+0xe9/0x150 [ 4916.865924][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 4916.866237][ T44] ? idempotent_init_module+0x316/0x610 [ 4916.866519][ T44] ? __lock_release+0x5d/0x170 [ 4916.866756][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 4916.867072][ T44] idempotent_init_module+0x331/0x610 [ 4916.867367][ T44] ? init_module_from_file+0x150/0x150 [ 4916.867698][ T44] ? cap_capable+0x94/0x230 [ 4916.867970][ T44] __x64_sys_finit_module+0xca/0x150 [ 4916.868214][ T44] ? do_syscall_64+0x85/0xfd0 [ 4916.868479][ T44] do_syscall_64+0xc1/0xfd0 [ 4916.868781][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 4916.869156][ T44] RIP: 0033:0x7f0ee345e92d [ 4916.869473][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 4916.869881][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 4916.870232][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 4916.870582][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 4916.871018][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 4916.871474][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 4916.871854][ T44] [ 4916.872100][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 4916.872733][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 4916.873411][ T44] Workqueue: netns cleanup_net [ 4916.873642][ T44] Call Trace: [ 4916.873811][ T44] [ 4916.873934][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 4916.874241][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 4916.874536][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.874829][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.875143][ T44] ? trace_contention_end+0xd8/0x140 [ 4916.875373][ T44] ? __mutex_lock+0x19f/0x1190 [ 4916.875602][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 4916.875837][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.876071][ T44] ? irqentry_exit+0x3b/0x80 [ 4916.876341][ T44] ? common_interrupt+0x9b/0xe0 [ 4916.876632][ T44] ? asm_common_interrupt+0x26/0x40 [ 4916.876886][ T44] ? nf_ct_iterate_cleanup+0x98/0x340 [nf_conntrack] [ 4916.877210][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 4916.877577][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 4916.877933][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 4916.878356][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 4916.878732][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 4916.879121][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 4916.879373][ T44] ? ops_undo_list+0x2bf/0x890 [ 4916.879607][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 4916.879833][ T44] ? cleanup_net+0x2d6/0x8b0 [ 4916.880144][ T44] ? cleanup_net+0x3b2/0x8b0 [ 4916.880433][ T44] ? net_passive_dec+0x190/0x190 [ 4916.880724][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.880955][ T44] ? process_one_work+0xe35/0x1650 [ 4916.881202][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 4916.881437][ T44] ? assign_work+0x168/0x240 [ 4916.881702][ T44] ? worker_thread+0x591/0xcf0 [ 4916.882001][ T44] ? rescuer_thread+0xd10/0xd10 [ 4916.882276][ T44] ? kthread+0x37b/0x5f0 [ 4916.882451][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4916.882676][ T44] ? ret_from_fork+0x1b/0x270 [ 4916.882969][ T44] ? __lock_release+0x5d/0x170 [ 4916.883281][ T44] ? rcu_is_watching+0x12/0xb0 [ 4916.883571][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4916.883862][ T44] ? ret_from_fork+0x1db/0x270 [ 4916.884093][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 4916.884324][ T44] ? ret_from_fork_asm+0x11/0x20 [ 4916.884569][ T44] [ 4916.884830][ T44] [ 4916.884830][ T44] Showing all locks held in the system: [ 4916.885581][ T44] 1 lock held by khungtaskd/44: [ 4916.885849][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 4916.886255][ T44] 4 locks held by kworker/u16:1/69: [ 4916.886521][ T44] 1 lock held by modprobe/13635: [ 4916.886806][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 4916.887351][ T44] [ 4916.887460][ T44] ============================================= [ 4916.887460][ T44] [ 5039.733112][ T44] INFO: task modprobe:13635 blocked for more than 860 seconds. [ 5039.733618][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 5039.733902][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 5039.734419][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 5039.735032][ T44] Call Trace: [ 5039.735218][ T44] [ 5039.735376][ T44] __schedule+0x880/0x1b10 [ 5039.735653][ T44] ? io_schedule_timeout+0x150/0x150 [ 5039.735939][ T44] ? schedule+0x1ee/0x270 [ 5039.736172][ T44] ? __lock_release+0x5d/0x170 [ 5039.736472][ T44] schedule+0xe2/0x270 [ 5039.736697][ T44] schedule_preempt_disabled+0x18/0x30 [ 5039.736935][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 5039.737244][ T44] ? __lock_acquire+0x449/0x7e0 [ 5039.737538][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 5039.737832][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.738070][ T44] ? lock_acquire+0x104/0x160 [ 5039.738307][ T44] ? register_pernet_subsys+0x1a/0x40 [ 5039.738548][ T44] down_write+0x1d6/0x200 [ 5039.738767][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 5039.739136][ T44] ? find_held_lock+0x2b/0x80 [ 5039.739432][ T44] ? __create_object+0x5e/0xb0 [ 5039.739727][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5039.740104][ T44] register_pernet_subsys+0x1a/0x40 [ 5039.740368][ T44] pg_init+0x2c/0x1000 [pktgen] [ 5039.740608][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5039.740894][ T44] do_one_initcall+0x8c/0x1d0 [ 5039.741163][ T44] ? trace_initcall_start+0x130/0x130 [ 5039.741453][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.741712][ T44] ? trace_kmalloc+0x26/0xd0 [ 5039.741950][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 5039.742189][ T44] ? debug_objects_oom+0x160/0x160 [ 5039.742421][ T44] ? kasan_unpoison+0x27/0x50 [ 5039.742649][ T44] ? __asan_register_globals+0x5d/0x70 [ 5039.742903][ T44] do_init_module+0x27a/0x860 [ 5039.743207][ T44] ? free_module+0x2f0/0x2f0 [ 5039.743495][ T44] ? kfree+0x21d/0x540 [ 5039.743717][ T44] ? load_module+0x20c5/0x2dd0 [ 5039.744015][ T44] load_module+0x1f40/0x2dd0 [ 5039.744263][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 5039.744633][ T44] ? kernel_read_file+0x3ed/0x550 [ 5039.744911][ T44] ? kernel_read_file+0x3c8/0x550 [ 5039.745150][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 5039.745381][ T44] ? init_module_from_file+0xe9/0x150 [ 5039.745615][ T44] init_module_from_file+0xe9/0x150 [ 5039.745861][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 5039.746173][ T44] ? idempotent_init_module+0x316/0x610 [ 5039.746461][ T44] ? __lock_release+0x5d/0x170 [ 5039.746753][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 5039.747014][ T44] idempotent_init_module+0x331/0x610 [ 5039.747259][ T44] ? init_module_from_file+0x150/0x150 [ 5039.747567][ T44] ? cap_capable+0x94/0x230 [ 5039.747862][ T44] __x64_sys_finit_module+0xca/0x150 [ 5039.748096][ T44] ? do_syscall_64+0x85/0xfd0 [ 5039.748384][ T44] do_syscall_64+0xc1/0xfd0 [ 5039.748676][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 5039.748976][ T44] RIP: 0033:0x7f0ee345e92d [ 5039.749254][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 5039.749695][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 5039.750139][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 5039.750496][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 5039.750859][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 5039.751307][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 5039.751718][ T44] [ 5039.751910][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 5039.752405][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 5039.752970][ T44] Workqueue: netns cleanup_net [ 5039.753207][ T44] Call Trace: [ 5039.753424][ T44] [ 5039.753572][ T44] ? rcu_read_lock_any_held+0x3f/0xa0 [ 5039.753831][ T44] ? validate_chain+0x15e/0x4d0 [ 5039.754066][ T44] ? __lock_acquire+0x449/0x7e0 [ 5039.754357][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 5039.754633][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 5039.754865][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.755134][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.755424][ T44] ? trace_contention_end+0xd8/0x140 [ 5039.755715][ T44] ? __mutex_lock+0x19f/0x1190 [ 5039.755965][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 5039.756204][ T44] ? nf_ct_iterate_cleanup+0x4a/0x340 [nf_conntrack] [ 5039.756500][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.756770][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 5039.757154][ T44] ? lockdep_hardirqs_on+0x7c/0x110 [ 5039.757444][ T44] ? asm_common_interrupt+0x26/0x40 [ 5039.757744][ T44] ? nf_ct_iterate_cleanup+0x73/0x340 [nf_conntrack] [ 5039.758047][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 5039.758484][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 5039.758907][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 5039.759360][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 5039.759677][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 5039.760056][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 5039.760351][ T44] ? ops_undo_list+0x2bf/0x890 [ 5039.760652][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 5039.760910][ T44] ? cleanup_net+0x2d6/0x8b0 [ 5039.761153][ T44] ? cleanup_net+0x3b2/0x8b0 [ 5039.761437][ T44] ? net_passive_dec+0x190/0x190 [ 5039.761682][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.761915][ T44] ? process_one_work+0xe35/0x1650 [ 5039.762161][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 5039.762449][ T44] ? assign_work+0x168/0x240 [ 5039.762701][ T44] ? worker_thread+0x591/0xcf0 [ 5039.762939][ T44] ? rescuer_thread+0xd10/0xd10 [ 5039.763240][ T44] ? kthread+0x37b/0x5f0 [ 5039.763462][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5039.763755][ T44] ? ret_from_fork+0x1b/0x270 [ 5039.764000][ T44] ? __lock_release+0x5d/0x170 [ 5039.764233][ T44] ? rcu_is_watching+0x12/0xb0 [ 5039.764508][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5039.764748][ T44] ? ret_from_fork+0x1db/0x270 [ 5039.765050][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5039.765340][ T44] ? ret_from_fork_asm+0x11/0x20 [ 5039.765630][ T44] [ 5039.765820][ T44] [ 5039.765820][ T44] Showing all locks held in the system: [ 5039.766161][ T44] 1 lock held by khungtaskd/44: [ 5039.766379][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 5039.766782][ T44] 5 locks held by kworker/u16:1/69: [ 5039.767021][ T44] 1 lock held by modprobe/13635: [ 5039.767248][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 5039.767821][ T44] [ 5039.767963][ T44] ============================================= [ 5039.767963][ T44] [ 5162.613113][ T44] INFO: task modprobe:13635 blocked for more than 983 seconds. [ 5162.613619][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 5162.613843][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 5162.614343][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 5162.614890][ T44] Call Trace: [ 5162.615075][ T44] [ 5162.615236][ T44] __schedule+0x880/0x1b10 [ 5162.615547][ T44] ? io_schedule_timeout+0x150/0x150 [ 5162.615846][ T44] ? schedule+0x1ee/0x270 [ 5162.616020][ T44] ? __lock_release+0x5d/0x170 [ 5162.616304][ T44] schedule+0xe2/0x270 [ 5162.616542][ T44] schedule_preempt_disabled+0x18/0x30 [ 5162.616848][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 5162.617154][ T44] ? __lock_acquire+0x449/0x7e0 [ 5162.617446][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 5162.617678][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.617927][ T44] ? lock_acquire+0x104/0x160 [ 5162.618169][ T44] ? register_pernet_subsys+0x1a/0x40 [ 5162.618409][ T44] down_write+0x1d6/0x200 [ 5162.618633][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 5162.618912][ T44] ? find_held_lock+0x2b/0x80 [ 5162.619168][ T44] ? __create_object+0x5e/0xb0 [ 5162.619461][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5162.619762][ T44] register_pernet_subsys+0x1a/0x40 [ 5162.620009][ T44] pg_init+0x2c/0x1000 [pktgen] [ 5162.620317][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5162.620683][ T44] do_one_initcall+0x8c/0x1d0 [ 5162.620961][ T44] ? trace_initcall_start+0x130/0x130 [ 5162.621201][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.621429][ T44] ? trace_kmalloc+0x26/0xd0 [ 5162.621657][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 5162.621946][ T44] ? debug_objects_oom+0x160/0x160 [ 5162.622247][ T44] ? kasan_unpoison+0x27/0x50 [ 5162.622543][ T44] ? __asan_register_globals+0x5d/0x70 [ 5162.622835][ T44] do_init_module+0x27a/0x860 [ 5162.623080][ T44] ? free_module+0x2f0/0x2f0 [ 5162.623307][ T44] ? kfree+0x21d/0x540 [ 5162.623478][ T44] ? load_module+0x20c5/0x2dd0 [ 5162.623749][ T44] load_module+0x1f40/0x2dd0 [ 5162.624058][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 5162.624422][ T44] ? kernel_read_file+0x3ed/0x550 [ 5162.624720][ T44] ? kernel_read_file+0x3c8/0x550 [ 5162.624981][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 5162.625221][ T44] ? init_module_from_file+0xe9/0x150 [ 5162.625449][ T44] init_module_from_file+0xe9/0x150 [ 5162.625677][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 5162.625980][ T44] ? idempotent_init_module+0x316/0x610 [ 5162.626286][ T44] ? __lock_release+0x5d/0x170 [ 5162.626585][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 5162.626851][ T44] idempotent_init_module+0x331/0x610 [ 5162.627108][ T44] ? init_module_from_file+0x150/0x150 [ 5162.627407][ T44] ? cap_capable+0x94/0x230 [ 5162.627658][ T44] __x64_sys_finit_module+0xca/0x150 [ 5162.627883][ T44] ? do_syscall_64+0x85/0xfd0 [ 5162.628192][ T44] do_syscall_64+0xc1/0xfd0 [ 5162.628497][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 5162.628793][ T44] RIP: 0033:0x7f0ee345e92d [ 5162.629106][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 5162.629558][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 5162.629962][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 5162.630317][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 5162.630660][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 5162.631094][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 5162.631493][ T44] [ 5162.631685][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 5162.632303][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 5162.632986][ T44] Workqueue: netns cleanup_net [ 5162.633226][ T44] Call Trace: [ 5162.633397][ T44] [ 5162.633549][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 5162.633846][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 5162.634141][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.634387][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.634615][ T44] ? trace_contention_end+0xd8/0x140 [ 5162.634857][ T44] ? __mutex_lock+0x19f/0x1190 [ 5162.635152][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 5162.635448][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.635738][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 5162.636053][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 5162.636358][ T44] ? common_interrupt+0x9b/0xe0 [ 5162.636631][ T44] ? asm_common_interrupt+0x26/0x40 [ 5162.636872][ T44] ? nf_ct_iterate_cleanup+0x73/0x340 [nf_conntrack] [ 5162.637257][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 5162.637700][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 5162.638153][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 5162.638507][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 5162.638802][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 5162.639100][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 5162.639334][ T44] ? ops_undo_list+0x2bf/0x890 [ 5162.639576][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 5162.639866][ T44] ? cleanup_net+0x2d6/0x8b0 [ 5162.640167][ T44] ? cleanup_net+0x3b2/0x8b0 [ 5162.640456][ T44] ? net_passive_dec+0x190/0x190 [ 5162.640734][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.640964][ T44] ? process_one_work+0xe35/0x1650 [ 5162.641210][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 5162.641508][ T44] ? assign_work+0x168/0x240 [ 5162.641803][ T44] ? worker_thread+0x591/0xcf0 [ 5162.642035][ T44] ? rescuer_thread+0xd10/0xd10 [ 5162.642331][ T44] ? kthread+0x37b/0x5f0 [ 5162.642551][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5162.642840][ T44] ? ret_from_fork+0x1b/0x270 [ 5162.643114][ T44] ? __lock_release+0x5d/0x170 [ 5162.643341][ T44] ? rcu_is_watching+0x12/0xb0 [ 5162.643566][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5162.643816][ T44] ? ret_from_fork+0x1db/0x270 [ 5162.644112][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5162.644373][ T44] ? ret_from_fork_asm+0x11/0x20 [ 5162.644620][ T44] [ 5162.644817][ T44] [ 5162.644817][ T44] Showing all locks held in the system: [ 5162.645213][ T44] 1 lock held by khungtaskd/44: [ 5162.645496][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 5162.645925][ T44] 5 locks held by kworker/u16:1/69: [ 5162.646168][ T44] 1 lock held by modprobe/13635: [ 5162.646458][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 5162.647032][ T44] [ 5162.647184][ T44] ============================================= [ 5162.647184][ T44] [ 5285.493112][ T44] INFO: task modprobe:13635 blocked for more than 1105 seconds. [ 5285.493641][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 5285.493895][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 5285.494299][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 5285.494820][ T44] Call Trace: [ 5285.494997][ T44] [ 5285.495186][ T44] __schedule+0x880/0x1b10 [ 5285.495501][ T44] ? io_schedule_timeout+0x150/0x150 [ 5285.495772][ T44] ? schedule+0x1ee/0x270 [ 5285.495946][ T44] ? __lock_release+0x5d/0x170 [ 5285.496212][ T44] schedule+0xe2/0x270 [ 5285.496422][ T44] schedule_preempt_disabled+0x18/0x30 [ 5285.496672][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 5285.496904][ T44] ? __lock_acquire+0x449/0x7e0 [ 5285.497204][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 5285.497510][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.497808][ T44] ? lock_acquire+0x104/0x160 [ 5285.498088][ T44] ? register_pernet_subsys+0x1a/0x40 [ 5285.498332][ T44] down_write+0x1d6/0x200 [ 5285.498510][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 5285.498859][ T44] ? find_held_lock+0x2b/0x80 [ 5285.499182][ T44] ? __create_object+0x5e/0xb0 [ 5285.499487][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5285.499856][ T44] register_pernet_subsys+0x1a/0x40 [ 5285.500136][ T44] pg_init+0x2c/0x1000 [pktgen] [ 5285.500375][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5285.500659][ T44] do_one_initcall+0x8c/0x1d0 [ 5285.500925][ T44] ? trace_initcall_start+0x130/0x130 [ 5285.501242][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.501540][ T44] ? trace_kmalloc+0x26/0xd0 [ 5285.501795][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 5285.502069][ T44] ? debug_objects_oom+0x160/0x160 [ 5285.502390][ T44] ? kasan_unpoison+0x27/0x50 [ 5285.502684][ T44] ? __asan_register_globals+0x5d/0x70 [ 5285.502982][ T44] do_init_module+0x27a/0x860 [ 5285.503311][ T44] ? free_module+0x2f0/0x2f0 [ 5285.503569][ T44] ? kfree+0x21d/0x540 [ 5285.503789][ T44] ? load_module+0x20c5/0x2dd0 [ 5285.504028][ T44] load_module+0x1f40/0x2dd0 [ 5285.504308][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 5285.504674][ T44] ? kernel_read_file+0x3ed/0x550 [ 5285.504933][ T44] ? kernel_read_file+0x3c8/0x550 [ 5285.505171][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 5285.505408][ T44] ? init_module_from_file+0xe9/0x150 [ 5285.505644][ T44] init_module_from_file+0xe9/0x150 [ 5285.505875][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 5285.506215][ T44] ? idempotent_init_module+0x316/0x610 [ 5285.506507][ T44] ? __lock_release+0x5d/0x170 [ 5285.506770][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 5285.507002][ T44] idempotent_init_module+0x331/0x610 [ 5285.507286][ T44] ? init_module_from_file+0x150/0x150 [ 5285.507592][ T44] ? cap_capable+0x94/0x230 [ 5285.507844][ T44] __x64_sys_finit_module+0xca/0x150 [ 5285.508086][ T44] ? do_syscall_64+0x85/0xfd0 [ 5285.508321][ T44] do_syscall_64+0xc1/0xfd0 [ 5285.508602][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 5285.508890][ T44] RIP: 0033:0x7f0ee345e92d [ 5285.509212][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 5285.509640][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 5285.510003][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 5285.510474][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 5285.510866][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 5285.511220][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 5285.511652][ T44] [ 5285.511855][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 5285.512507][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 5285.513253][ T44] Workqueue: netns cleanup_net [ 5285.513486][ T44] Call Trace: [ 5285.513662][ T44] [ 5285.513785][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 5285.514099][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 5285.514403][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.514701][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.514979][ T44] ? trace_contention_end+0xd8/0x140 [ 5285.515219][ T44] ? __mutex_lock+0x19f/0x1190 [ 5285.515450][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 5285.515700][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.515931][ T44] ? trace_irq_disable.constprop.0+0xd0/0x130 [ 5285.516322][ T44] ? irqentry_exit+0x3b/0x80 [ 5285.516585][ T44] ? common_interrupt+0x9b/0xe0 [ 5285.516814][ T44] ? asm_common_interrupt+0x26/0x40 [ 5285.517124][ T44] ? nf_ct_iterate_cleanup+0x6a/0x340 [nf_conntrack] [ 5285.517508][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 5285.517947][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 5285.518315][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 5285.518673][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 5285.518971][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 5285.519273][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 5285.519556][ T44] ? ops_undo_list+0x2bf/0x890 [ 5285.519855][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 5285.520122][ T44] ? cleanup_net+0x2d6/0x8b0 [ 5285.520360][ T44] ? cleanup_net+0x3b2/0x8b0 [ 5285.520636][ T44] ? net_passive_dec+0x190/0x190 [ 5285.520866][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.521162][ T44] ? process_one_work+0xe35/0x1650 [ 5285.521473][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 5285.521719][ T44] ? assign_work+0x168/0x240 [ 5285.522018][ T44] ? worker_thread+0x591/0xcf0 [ 5285.522350][ T44] ? rescuer_thread+0xd10/0xd10 [ 5285.522644][ T44] ? kthread+0x37b/0x5f0 [ 5285.522867][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5285.523105][ T44] ? ret_from_fork+0x1b/0x270 [ 5285.523360][ T44] ? __lock_release+0x5d/0x170 [ 5285.523647][ T44] ? rcu_is_watching+0x12/0xb0 [ 5285.523879][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5285.524156][ T44] ? ret_from_fork+0x1db/0x270 [ 5285.524451][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5285.524727][ T44] ? ret_from_fork_asm+0x11/0x20 [ 5285.524971][ T44] [ 5285.525174][ T44] [ 5285.525174][ T44] Showing all locks held in the system: [ 5285.525603][ T44] 1 lock held by khungtaskd/44: [ 5285.525876][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 5285.526289][ T44] 4 locks held by kworker/u16:1/69: [ 5285.526544][ T44] 1 lock held by modprobe/13635: [ 5285.526797][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 5285.527264][ T44] [ 5285.527390][ T44] ============================================= [ 5285.527390][ T44] [ 5408.372179][ T44] INFO: task modprobe:13635 blocked for more than 1228 seconds. [ 5408.372621][ T44] Not tainted 6.18.0-rc6-virtme #1 [ 5408.372861][ T44] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 5408.373288][ T44] task:modprobe state:D stack:25744 pid:13635 tgid:13635 ppid:1 task_flags:0x400100 flags:0x00080003 [ 5408.373833][ T44] Call Trace: [ 5408.374022][ T44] [ 5408.374156][ T44] __schedule+0x880/0x1b10 [ 5408.374420][ T44] ? io_schedule_timeout+0x150/0x150 [ 5408.374661][ T44] ? schedule+0x1ee/0x270 [ 5408.374836][ T44] ? __lock_release+0x5d/0x170 [ 5408.375111][ T44] schedule+0xe2/0x270 [ 5408.375286][ T44] schedule_preempt_disabled+0x18/0x30 [ 5408.375514][ T44] rwsem_down_write_slowpath+0x3c5/0xc60 [ 5408.375750][ T44] ? __lock_acquire+0x449/0x7e0 [ 5408.375996][ T44] ? rwsem_down_read_slowpath+0xd80/0xd80 [ 5408.376232][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.376477][ T44] ? lock_acquire+0x104/0x160 [ 5408.376702][ T44] ? register_pernet_subsys+0x1a/0x40 [ 5408.376946][ T44] down_write+0x1d6/0x200 [ 5408.377142][ T44] ? rwsem_down_write_slowpath+0xc60/0xc60 [ 5408.377432][ T44] ? find_held_lock+0x2b/0x80 [ 5408.377665][ T44] ? __create_object+0x5e/0xb0 [ 5408.377900][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5408.378215][ T44] register_pernet_subsys+0x1a/0x40 [ 5408.378438][ T44] pg_init+0x2c/0x1000 [pktgen] [ 5408.378683][ T44] ? _sub_I_65535_1+0xa50/0xa50 [nf_defrag_ipv4] [ 5408.378963][ T44] do_one_initcall+0x8c/0x1d0 [ 5408.379220][ T44] ? trace_initcall_start+0x130/0x130 [ 5408.379441][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.379683][ T44] ? trace_kmalloc+0x26/0xd0 [ 5408.379910][ T44] ? __kmalloc_cache_noprof+0x2e4/0x690 [ 5408.380159][ T44] ? debug_objects_oom+0x160/0x160 [ 5408.380389][ T44] ? kasan_unpoison+0x27/0x50 [ 5408.380620][ T44] ? __asan_register_globals+0x5d/0x70 [ 5408.380856][ T44] do_init_module+0x27a/0x860 [ 5408.381116][ T44] ? free_module+0x2f0/0x2f0 [ 5408.381346][ T44] ? kfree+0x21d/0x540 [ 5408.381517][ T44] ? load_module+0x20c5/0x2dd0 [ 5408.381750][ T44] load_module+0x1f40/0x2dd0 [ 5408.381989][ T44] ? layout_and_allocate.constprop.0+0x630/0x630 [ 5408.382294][ T44] ? kernel_read_file+0x3ed/0x550 [ 5408.382531][ T44] ? kernel_read_file+0x3c8/0x550 [ 5408.382768][ T44] ? __ia32_sys_fsconfig+0x150/0x150 [ 5408.383007][ T44] ? init_module_from_file+0xe9/0x150 [ 5408.383262][ T44] init_module_from_file+0xe9/0x150 [ 5408.383493][ T44] ? __do_sys_init_module+0x1e0/0x1e0 [ 5408.383737][ T44] ? idempotent_init_module+0x316/0x610 [ 5408.383962][ T44] ? __lock_release+0x5d/0x170 [ 5408.384217][ T44] ? do_raw_spin_unlock+0x58/0x220 [ 5408.384451][ T44] idempotent_init_module+0x331/0x610 [ 5408.384680][ T44] ? init_module_from_file+0x150/0x150 [ 5408.384962][ T44] ? cap_capable+0x94/0x230 [ 5408.385237][ T44] __x64_sys_finit_module+0xca/0x150 [ 5408.385471][ T44] ? do_syscall_64+0x85/0xfd0 [ 5408.385711][ T44] do_syscall_64+0xc1/0xfd0 [ 5408.385949][ T44] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 5408.386283][ T44] RIP: 0033:0x7f0ee345e92d [ 5408.386528][ T44] RSP: 002b:00007fff5cbdb9f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 5408.386874][ T44] RAX: ffffffffffffffda RBX: 0000558c9e844ac0 RCX: 00007f0ee345e92d [ 5408.387236][ T44] RDX: 0000000000000000 RSI: 0000558c6c099a2a RDI: 0000000000000005 [ 5408.387579][ T44] RBP: 0000000000040000 R08: 0000000000000000 R09: 00007fff5cbdbb30 [ 5408.387927][ T44] R10: 0000000000000005 R11: 0000000000000246 R12: 0000558c6c099a2a [ 5408.388295][ T44] R13: 0000558c9e844b60 R14: 0000558c9e844da0 R15: 0000000000000000 [ 5408.388654][ T44] [ 5408.388850][ T44] INFO: task modprobe:13635 blocked on an rw-semaphore likely owned by task kworker/u16:1:69 [ 5408.389369][ T44] task:kworker/u16:1 state:R running task stack:23840 pid:69 tgid:69 ppid:2 task_flags:0x4208060 flags:0x00080000 [ 5408.389930][ T44] Workqueue: netns cleanup_net [ 5408.390169][ T44] Call Trace: [ 5408.390346][ T44] [ 5408.390468][ T44] ? __mutex_trylock_common+0xf9/0x260 [ 5408.390703][ T44] ? __mutex_handoff+0x2b0/0x2b0 [ 5408.390937][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.391182][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.391424][ T44] ? __schedule+0x888/0x1b10 [ 5408.391655][ T44] ? trace_sched_exit_tp+0xcd/0x130 [ 5408.391898][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.392141][ T44] ? irqentry_exit+0x3b/0x80 [ 5408.392377][ T44] ? common_interrupt+0x9b/0xe0 [ 5408.392603][ T44] ? asm_common_interrupt+0x26/0x40 [ 5408.392847][ T44] ? nf_ct_iterate_cleanup+0x6a/0x340 [nf_conntrack] [ 5408.393160][ T44] ? __nf_conntrack_hash_insert+0x200/0x200 [nf_conntrack] [ 5408.393521][ T44] ? nf_conntrack_cleanup_net_list+0x19a/0x4b0 [nf_conntrack] [ 5408.393878][ T44] ? nf_conntrack_cleanup_net_list+0x10e/0x4b0 [nf_conntrack] [ 5408.394235][ T44] ? nf_conntrack_cleanup_end+0x70/0x70 [nf_conntrack] [ 5408.394548][ T44] ? nf_conntrack_pernet_exit+0xa5/0x140 [nf_conntrack] [ 5408.394840][ T44] ? _raw_spin_unlock+0x2d/0x50 [ 5408.395113][ T44] ? ops_undo_list+0x2bf/0x890 [ 5408.395369][ T44] ? rtnl_net_dumpid_one+0x270/0x270 [ 5408.395601][ T44] ? cleanup_net+0x2d6/0x8b0 [ 5408.395841][ T44] ? cleanup_net+0x3b2/0x8b0 [ 5408.396088][ T44] ? net_passive_dec+0x190/0x190 [ 5408.396343][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.396581][ T44] ? process_one_work+0xe35/0x1650 [ 5408.396823][ T44] ? pwq_dec_nr_in_flight+0x550/0x550 [ 5408.397070][ T44] ? assign_work+0x168/0x240 [ 5408.397302][ T44] ? worker_thread+0x591/0xcf0 [ 5408.397547][ T44] ? rescuer_thread+0xd10/0xd10 [ 5408.397778][ T44] ? kthread+0x37b/0x5f0 [ 5408.397952][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5408.398196][ T44] ? ret_from_fork+0x1b/0x270 [ 5408.398432][ T44] ? __lock_release+0x5d/0x170 [ 5408.398663][ T44] ? rcu_is_watching+0x12/0xb0 [ 5408.398893][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5408.399133][ T44] ? ret_from_fork+0x1db/0x270 [ 5408.399362][ T44] ? kthread_is_per_cpu+0xc0/0xc0 [ 5408.399598][ T44] ? ret_from_fork_asm+0x11/0x20 [ 5408.399842][ T44] [ 5408.400014][ T44] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings [ 5408.400439][ T44] [ 5408.400439][ T44] Showing all locks held in the system: [ 5408.400773][ T44] 1 lock held by khungtaskd/44: [ 5408.400996][ T44] #0: ffffffffaf388580 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x260 [ 5408.401410][ T44] 4 locks held by kworker/u16:1/69: [ 5408.401653][ T44] 1 lock held by modprobe/13635: [ 5408.401878][ T44] #0: ffffffffafa80690 (pernet_ops_rwsem){++++}-{4:4}, at: register_pernet_subsys+0x1a/0x40 [ 5408.402341][ T44] [ 5408.402461][ T44] ============================================= [ 5408.402461][ T44] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr