[ 15.541265][ C2] [ 15.541415][ C2] ================================ [ 15.541623][ C2] WARNING: inconsistent lock state [ 15.541830][ C2] 6.15.0-rc7-virtme #1 Not tainted [ 15.542034][ C2] -------------------------------- [ 15.542242][ C2] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 15.542504][ C2] kworker/u16:0/12 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 15.542762][ C2] ffffffff8bbbff78 (pin_fs_lock){+.?.}-{3:3}, at: simple_pin_fs+0x24/0x150 [ 15.543129][ C2] {SOFTIRQ-ON-W} state was registered at: [ 15.543340][ C2] __lock_acquire+0x3eb/0x9d0 [ 15.543551][ C2] lock_acquire.part.0+0xb6/0x240 [ 15.543762][ C2] _raw_spin_lock+0x33/0x40 [ 15.543968][ C2] simple_pin_fs+0x24/0x150 [ 15.544179][ C2] start_creating.part.0+0x3f/0x2f0 [ 15.544388][ C2] debugfs_create_dir+0x6a/0x540 [ 15.544633][ C2] component_debug_init+0x17/0x30 [ 15.544843][ C2] do_one_initcall+0x8f/0x1e0 [ 15.545066][ C2] do_initcalls+0x176/0x280 [ 15.545292][ C2] kernel_init_freeable+0x22d/0x300 [ 15.545506][ C2] kernel_init+0x20/0x200 [ 15.545726][ C2] ret_from_fork+0x31/0x70 [ 15.545947][ C2] ret_from_fork_asm+0x1a/0x30 [ 15.546161][ C2] irq event stamp: 4288 [ 15.546326][ C2] hardirqs last enabled at (4288): [] _raw_spin_unlock_irqrestore+0x5d/0x80 [ 15.546763][ C2] hardirqs last disabled at (4287): [] _raw_spin_lock_irqsave+0x5b/0x60 [ 15.547144][ C2] softirqs last enabled at (3046): [] unregister_netdevice_many_notify+0xdd2/0x1bf0 [ 15.547575][ C2] softirqs last disabled at (3267): [] __irq_exit_rcu+0xfa/0x160 [ 15.547952][ C2] [ 15.547952][ C2] other info that might help us debug this: [ 15.548275][ C2] Possible unsafe locking scenario: [ 15.548275][ C2] [ 15.548593][ C2] CPU0 [ 15.548763][ C2] ---- [ 15.548921][ C2] lock(pin_fs_lock); [ 15.549099][ C2] [ 15.549275][ C2] lock(pin_fs_lock); [ 15.549446][ C2] [ 15.549446][ C2] *** DEADLOCK *** [ 15.549446][ C2] [ 15.549782][ C2] 7 locks held by kworker/u16:0/12: [ 15.550011][ C2] #0: ffff8880010ae548 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x7e5/0x1690 [ 15.550487][ C2] #1: ffffc900000c7d40 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0xdf6/0x1690 [ 15.550874][ C2] #2: ffffffff8c221f10 (pernet_ops_rwsem){++++}-{4:4}, at: cleanup_net+0xae/0x810 [ 15.551271][ C2] #3: ffffffff8c23f508 (rtnl_mutex){+.+.}-{4:4}, at: ops_undo_list+0x636/0x8a0 [ 15.551656][ C2] #4: ffff888001a00548 (&root->kernfs_rwsem){++++}-{4:4}, at: kernfs_remove_by_name_ns+0x36/0xc0 [ 15.552103][ C2] #5: ffffffff8bc220b8 (kernfs_idr_lock){+.+.}-{3:3}, at: kernfs_put.part.0+0xd4/0x480 [ 15.552515][ C2] #6: ffffffff8b9749c0 (rcu_callback){....}-{0:0}, at: rcu_do_batch+0x2e4/0xf20 [ 15.552919][ C2] [ 15.552919][ C2] stack backtrace: [ 15.553184][ C2] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.15.0-rc7-virtme #1 PREEMPT(full) [ 15.553190][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.553192][ C2] Workqueue: netns cleanup_net [ 15.553197][ C2] Call Trace: [ 15.553199][ C2] [ 15.553201][ C2] dump_stack_lvl+0x82/0xd0 [ 15.553207][ C2] print_usage_bug.part.0+0x25f/0x360 [ 15.553212][ C2] mark_lock_irq+0x343/0x400 [ 15.553216][ C2] ? __pfx_unwind_next_frame+0x10/0x10 [ 15.553221][ C2] ? save_trace+0x52/0x170 [ 15.553226][ C2] mark_lock+0x174/0x2f0 [ 15.553230][ C2] mark_usage+0x46/0x150 [ 15.553233][ C2] __lock_acquire+0x3eb/0x9d0 [ 15.553237][ C2] lock_acquire.part.0+0xb6/0x240 [ 15.553240][ C2] ? simple_pin_fs+0x24/0x150 [ 15.553244][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.553247][ C2] ? lock_acquire+0x10c/0x170 [ 15.553250][ C2] ? simple_pin_fs+0x24/0x150 [ 15.553253][ C2] _raw_spin_lock+0x33/0x40 [ 15.553256][ C2] ? simple_pin_fs+0x24/0x150 [ 15.553259][ C2] simple_pin_fs+0x24/0x150 [ 15.553263][ C2] debugfs_remove+0x35/0x70 [ 15.553266][ C2] ref_tracker_dir_exit+0xcf/0x740 [ 15.553272][ C2] ? __pfx_ref_tracker_free+0x10/0x10 [ 15.553275][ C2] ? __sk_destruct+0x383/0x780 [ 15.553280][ C2] ? rcu_do_batch+0x34f/0xf20 [ 15.553284][ C2] ? __pfx_ref_tracker_dir_exit+0x10/0x10 [ 15.553287][ C2] ? irq_exit_rcu+0xe/0x30 [ 15.553290][ C2] ? sysvec_apic_timer_interrupt+0xa8/0xc0 [ 15.553294][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 15.553297][ C2] ? lock_acquire.part.0+0xf2/0x240 [ 15.553300][ C2] ? _raw_spin_lock+0x33/0x40 [ 15.553303][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.553305][ C2] ? kernfs_remove_by_name_ns+0x8d/0xc0 [ 15.553309][ C2] ? sysfs_unmerge_group+0xde/0x160 [ 15.553312][ C2] ? dpm_sysfs_remove+0x6f/0xa0 [ 15.553317][ C2] ? device_del+0x192/0x8c0 [ 15.553320][ C2] ? unregister_netdevice_many_notify+0x44d/0x1bf0 [ 15.553325][ C2] __put_net+0x19/0x60 [ 15.553328][ C2] __sk_destruct+0x58a/0x780 [ 15.553332][ C2] ? rcu_do_batch+0x34a/0xf20 [ 15.553335][ C2] rcu_do_batch+0x34f/0xf20 [ 15.553339][ C2] ? find_held_lock+0x2b/0x80 [ 15.553344][ C2] ? __pfx_rcu_do_batch+0x10/0x10 [ 15.553348][ C2] ? mark_held_locks+0x49/0x80 [ 15.553351][ C2] ? note_gp_changes+0x182/0x1e0 [ 15.553353][ C2] ? lockdep_hardirqs_on+0x7c/0x110 [ 15.553358][ C2] rcu_core+0x2bb/0x500 [ 15.553362][ C2] handle_softirqs+0x218/0x620 [ 15.553367][ C2] __irq_exit_rcu+0xfa/0x160 [ 15.553370][ C2] irq_exit_rcu+0xe/0x30 [ 15.553373][ C2] sysvec_apic_timer_interrupt+0xa8/0xc0 [ 15.553376][ C2] [ 15.553378][ C2] [ 15.553379][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 15.553382][ C2] RIP: 0010:lock_acquire.part.0+0xf2/0x240 [ 15.553385][ C2] Code: ff ff ff 65 0f c1 05 ed 8d 13 05 83 f8 01 0f 85 3e 01 00 00 9c 58 f6 c4 02 0f 85 29 01 00 00 48 85 db 74 01 fb 48 8b 44 24 30 <65> 48 2b 05 5e 51 13 05 0f 85 3a 01 00 00 48 83 c4 38 5b 5d 41 5c [ 15.553388][ C2] RSP: 0018:ffffc900000c7780 EFLAGS: 00000206 [ 15.553391][ C2] RAX: f1801e24fbd78300 RBX: 0000000000000200 RCX: 0000000000000001 [ 15.553393][ C2] RDX: 0000000000000000 RSI: ffffffff8b472ecb RDI: ffffffff8ac513a0 [ 15.553395][ C2] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 15.553396][ C2] R10: 00000000000000c8 R11: ffffffff8bc220b8 R12: 0000000000000000 [ 15.553398][ C2] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8bc220b8 [ 15.553404][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.553407][ C2] ? lock_acquire+0x10c/0x170 [ 15.553410][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.553414][ C2] _raw_spin_lock+0x33/0x40 [ 15.553417][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.553420][ C2] kernfs_put.part.0+0xd4/0x480 [ 15.553424][ C2] kernfs_remove_by_name_ns+0x8d/0xc0 [ 15.553428][ C2] sysfs_unmerge_group+0xde/0x160 [ 15.553431][ C2] dpm_sysfs_remove+0x6f/0xa0 [ 15.553434][ C2] device_del+0x192/0x8c0 [ 15.553438][ C2] ? __pfx_device_del+0x10/0x10 [ 15.553441][ C2] ? netdev_unregister_kobject+0x2d5/0x380 [ 15.553448][ C2] unregister_netdevice_many_notify+0x44d/0x1bf0 [ 15.553453][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 15.553457][ C2] ? rtnl_is_locked+0x15/0x20 [ 15.553462][ C2] ? unregister_netdevice_queue+0x6f/0x410 [ 15.553465][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 15.553471][ C2] ? lockdep_rtnl_is_held+0x1a/0x30 [ 15.553473][ C2] ? sit_exit_rtnl_net+0x2e1/0x3e0 [ 15.553479][ C2] ops_undo_list+0x723/0x8a0 [ 15.553483][ C2] ? __pfx_ops_undo_list+0x10/0x10 [ 15.553487][ C2] ? __local_bh_enable_ip+0xa9/0x130 [ 15.553491][ C2] cleanup_net+0x3a1/0x810 [ 15.553494][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 15.553498][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.553502][ C2] process_one_work+0xe40/0x1690 [ 15.553509][ C2] ? __pfx_process_one_work+0x10/0x10 [ 15.553515][ C2] ? assign_work+0x16c/0x240 [ 15.553520][ C2] worker_thread+0x591/0xcf0 [ 15.553525][ C2] ? __pfx_worker_thread+0x10/0x10 [ 15.553528][ C2] kthread+0x37b/0x600 [ 15.553533][ C2] ? __pfx_kthread+0x10/0x10 [ 15.553536][ C2] ? ret_from_fork+0x1b/0x70 [ 15.553539][ C2] ? __lock_release+0x5d/0x170 [ 15.553542][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.553545][ C2] ? __pfx_kthread+0x10/0x10 [ 15.553548][ C2] ret_from_fork+0x31/0x70 [ 15.553551][ C2] ? __pfx_kthread+0x10/0x10 [ 15.553554][ C2] ret_from_fork_asm+0x1a/0x30 [ 15.553562][ C2] [ 15.579067][ C2] BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1576 [ 15.579454][ C2] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 12, name: kworker/u16:0 [ 15.579807][ C2] preempt_count: 101, expected: 0 [ 15.580021][ C2] RCU nest depth: 0, expected: 0 [ 15.580234][ C2] INFO: lockdep is turned off. [ 15.580437][ C2] Preemption disabled at: [ 15.580439][ C2] [<0000000000000000>] 0x0 [ 15.580806][ C2] CPU: 2 UID: 0 PID: 12 Comm: kworker/u16:0 Not tainted 6.15.0-rc7-virtme #1 PREEMPT(full) [ 15.580812][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 15.580814][ C2] Workqueue: netns cleanup_net [ 15.580822][ C2] Call Trace: [ 15.580824][ C2] [ 15.580827][ C2] dump_stack_lvl+0xb0/0xd0 [ 15.580833][ C2] __might_resched+0x360/0x5a0 [ 15.580840][ C2] down_write+0x72/0x210 [ 15.580844][ C2] ? __pfx_down_write+0x10/0x10 [ 15.580847][ C2] ? simple_recursive_removal+0x3a/0x860 [ 15.580852][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.580857][ C2] ? do_raw_spin_unlock+0x58/0x220 [ 15.580862][ C2] simple_recursive_removal+0x166/0x860 [ 15.580865][ C2] ? __pfx_remove_one+0x10/0x10 [ 15.580870][ C2] ? do_raw_spin_unlock+0x58/0x220 [ 15.580875][ C2] debugfs_remove+0x44/0x70 [ 15.580878][ C2] ref_tracker_dir_exit+0xcf/0x740 [ 15.580884][ C2] ? __pfx_ref_tracker_free+0x10/0x10 [ 15.580887][ C2] ? __sk_destruct+0x383/0x780 [ 15.580892][ C2] ? rcu_do_batch+0x34f/0xf20 [ 15.580897][ C2] ? __pfx_ref_tracker_dir_exit+0x10/0x10 [ 15.580900][ C2] ? irq_exit_rcu+0xe/0x30 [ 15.580905][ C2] ? sysvec_apic_timer_interrupt+0xa8/0xc0 [ 15.580909][ C2] ? asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 15.580913][ C2] ? lock_acquire.part.0+0xf2/0x240 [ 15.580916][ C2] ? _raw_spin_lock+0x33/0x40 [ 15.580920][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.580924][ C2] ? kernfs_remove_by_name_ns+0x8d/0xc0 [ 15.580928][ C2] ? sysfs_unmerge_group+0xde/0x160 [ 15.580931][ C2] ? dpm_sysfs_remove+0x6f/0xa0 [ 15.580935][ C2] ? device_del+0x192/0x8c0 [ 15.580938][ C2] ? unregister_netdevice_many_notify+0x44d/0x1bf0 [ 15.580945][ C2] __put_net+0x19/0x60 [ 15.580948][ C2] __sk_destruct+0x58a/0x780 [ 15.580952][ C2] ? rcu_do_batch+0x34a/0xf20 [ 15.580956][ C2] rcu_do_batch+0x34f/0xf20 [ 15.580960][ C2] ? find_held_lock+0x2b/0x80 [ 15.580965][ C2] ? __pfx_rcu_do_batch+0x10/0x10 [ 15.580969][ C2] ? mark_held_locks+0x49/0x80 [ 15.580972][ C2] ? note_gp_changes+0x182/0x1e0 [ 15.580975][ C2] ? lockdep_hardirqs_on+0x7c/0x110 [ 15.580980][ C2] rcu_core+0x2bb/0x500 [ 15.580983][ C2] handle_softirqs+0x218/0x620 [ 15.580988][ C2] __irq_exit_rcu+0xfa/0x160 [ 15.580991][ C2] irq_exit_rcu+0xe/0x30 [ 15.580994][ C2] sysvec_apic_timer_interrupt+0xa8/0xc0 [ 15.580997][ C2] [ 15.580998][ C2] [ 15.581000][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 15.581003][ C2] RIP: 0010:lock_acquire.part.0+0xf2/0x240 [ 15.581006][ C2] Code: ff ff ff 65 0f c1 05 ed 8d 13 05 83 f8 01 0f 85 3e 01 00 00 9c 58 f6 c4 02 0f 85 29 01 00 00 48 85 db 74 01 fb 48 8b 44 24 30 <65> 48 2b 05 5e 51 13 05 0f 85 3a 01 00 00 48 83 c4 38 5b 5d 41 5c [ 15.581009][ C2] RSP: 0018:ffffc900000c7780 EFLAGS: 00000206 [ 15.581012][ C2] RAX: f1801e24fbd78300 RBX: 0000000000000200 RCX: 0000000000000001 [ 15.581014][ C2] RDX: 0000000000000000 RSI: ffffffff8b472ecb RDI: ffffffff8ac513a0 [ 15.581016][ C2] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 [ 15.581018][ C2] R10: 00000000000000c8 R11: ffffffff8bc220b8 R12: 0000000000000000 [ 15.581020][ C2] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8bc220b8 [ 15.581026][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.581028][ C2] ? lock_acquire+0x10c/0x170 [ 15.581031][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.581035][ C2] _raw_spin_lock+0x33/0x40 [ 15.581038][ C2] ? kernfs_put.part.0+0xd4/0x480 [ 15.581041][ C2] kernfs_put.part.0+0xd4/0x480 [ 15.581045][ C2] kernfs_remove_by_name_ns+0x8d/0xc0 [ 15.581049][ C2] sysfs_unmerge_group+0xde/0x160 [ 15.581052][ C2] dpm_sysfs_remove+0x6f/0xa0 [ 15.581055][ C2] device_del+0x192/0x8c0 [ 15.581059][ C2] ? __pfx_device_del+0x10/0x10 [ 15.581062][ C2] ? netdev_unregister_kobject+0x2d5/0x380 [ 15.581069][ C2] unregister_netdevice_many_notify+0x44d/0x1bf0 [ 15.581075][ C2] ? __pfx_unregister_netdevice_many_notify+0x10/0x10 [ 15.581078][ C2] ? rtnl_is_locked+0x15/0x20 [ 15.581082][ C2] ? unregister_netdevice_queue+0x6f/0x410 [ 15.581086][ C2] ? __pfx_unregister_netdevice_queue+0x10/0x10 [ 15.581091][ C2] ? lockdep_rtnl_is_held+0x1a/0x30 [ 15.581093][ C2] ? sit_exit_rtnl_net+0x2e1/0x3e0 [ 15.581099][ C2] ops_undo_list+0x723/0x8a0 [ 15.581103][ C2] ? __pfx_ops_undo_list+0x10/0x10 [ 15.581107][ C2] ? __local_bh_enable_ip+0xa9/0x130 [ 15.581111][ C2] cleanup_net+0x3a1/0x810 [ 15.581115][ C2] ? __pfx_cleanup_net+0x10/0x10 [ 15.581118][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.581122][ C2] process_one_work+0xe40/0x1690 [ 15.581130][ C2] ? __pfx_process_one_work+0x10/0x10 [ 15.581136][ C2] ? assign_work+0x16c/0x240 [ 15.581141][ C2] worker_thread+0x591/0xcf0 [ 15.581146][ C2] ? __pfx_worker_thread+0x10/0x10 [ 15.581149][ C2] kthread+0x37b/0x600 [ 15.581154][ C2] ? __pfx_kthread+0x10/0x10 [ 15.581157][ C2] ? ret_from_fork+0x1b/0x70 [ 15.581163][ C2] ? __lock_release+0x5d/0x170 [ 15.581166][ C2] ? rcu_is_watching+0x12/0xc0 [ 15.581169][ C2] ? __pfx_kthread+0x10/0x10 [ 15.581173][ C2] ret_from_fork+0x31/0x70 [ 15.581175][ C2] ? __pfx_kthread+0x10/0x10 [ 15.581178][ C2] ret_from_fork_asm+0x1a/0x30 [ 15.581187][ C2]