[ 180.425602][ T967] br1: port 1(veth1) entered blocking state [ 180.426150][ T967] br1: port 1(veth1) entered disabled state [ 180.426428][ T967] veth1: entered allmulticast mode [ 180.428869][ T967] veth1: entered promiscuous mode [ 180.552565][ T7] br1: port 1(veth1) entered blocking state [ 180.553333][ T7] br1: port 1(veth1) entered forwarding state [ 180.672063][ T969] br1: port 2(veth2) entered blocking state [ 180.672321][ T969] br1: port 2(veth2) entered disabled state [ 180.672576][ T969] veth2: entered allmulticast mode [ 180.674426][ T969] veth2: entered promiscuous mode [ 180.797315][ T7] br1: port 2(veth2) entered blocking state [ 180.797597][ T7] br1: port 2(veth2) entered forwarding state [ 185.978185][ C3] [ 185.978377][ C3] ======================================================== [ 185.978620][ C3] WARNING: possible irq lock inversion dependency detected [ 185.978838][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 185.978983][ C3] -------------------------------------------------------- [ 185.979199][ C3] swapper/3/0 just changed the state of lock: [ 185.979374][ C3] ffff8880068ebd80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 185.979633][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 185.979849][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 185.979854][ C3] [ 185.979854][ C3] [ 185.979854][ C3] and interrupts could create inverse lock ordering between them. [ 185.979854][ C3] [ 185.980383][ C3] [ 185.980383][ C3] other info that might help us debug this: [ 185.980588][ C3] Possible interrupt unsafe locking scenario: [ 185.980588][ C3] [ 185.980797][ C3] CPU0 CPU1 [ 185.980934][ C3] ---- ---- [ 185.981072][ C3] lock(&p->alloc_lock); [ 185.981182][ C3] local_irq_disable(); [ 185.981360][ C3] lock(&ndev->lock); [ 185.981533][ C3] lock(&p->alloc_lock); [ 185.981719][ C3] [ 185.981827][ C3] lock(&ndev->lock); [ 185.981937][ C3] [ 185.981937][ C3] *** DEADLOCK *** [ 185.981937][ C3] [ 185.982140][ C3] 1 lock held by swapper/3/0: [ 185.982287][ C3] #0: ffffc90000288b68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 185.982555][ C3] [ 185.982555][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 185.982801][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 185.982948][ C3] HARDIRQ-ON-W at: [ 185.983060][ C3] __lock_acquire+0x797/0x1570 [ 185.983243][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.983424][ C3] _raw_spin_lock+0x30/0x40 [ 185.983608][ C3] set_mems_allowed+0x1d/0x210 [ 185.983789][ C3] kernel_init_freeable+0x72/0x310 [ 185.983976][ C3] kernel_init+0x20/0x200 [ 185.984155][ C3] ret_from_fork+0x31/0x70 [ 185.984356][ C3] ret_from_fork_asm+0x1a/0x30 [ 185.984555][ C3] SOFTIRQ-ON-W at: [ 185.984661][ C3] __lock_acquire+0x797/0x1570 [ 185.984877][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.985063][ C3] _raw_spin_lock+0x30/0x40 [ 185.985293][ C3] set_mems_allowed+0x1d/0x210 [ 185.985507][ C3] kernel_init_freeable+0x72/0x310 [ 185.985711][ C3] kernel_init+0x20/0x200 [ 185.985916][ C3] ret_from_fork+0x31/0x70 [ 185.986117][ C3] ret_from_fork_asm+0x1a/0x30 [ 185.986317][ C3] INITIAL USE at: [ 185.986442][ C3] __lock_acquire+0x797/0x1570 [ 185.986619][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.986811][ C3] _raw_spin_lock+0x30/0x40 [ 185.987025][ C3] set_mems_allowed+0x1d/0x210 [ 185.987214][ C3] kernel_init_freeable+0x72/0x310 [ 185.987425][ C3] kernel_init+0x20/0x200 [ 185.987611][ C3] ret_from_fork+0x31/0x70 [ 185.987843][ C3] ret_from_fork_asm+0x1a/0x30 [ 185.988020][ C3] } [ 185.988110][ C3] ... key at: [] __key.387+0x0/0x40 [ 185.988348][ C3] ... acquired at: [ 185.988473][ C3] __lock_acquire+0xaf0/0x1570 [ 185.988629][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.988815][ C3] _raw_spin_lock+0x30/0x40 [ 185.988959][ C3] __get_task_comm+0x27/0x70 [ 185.989133][ C3] ref_tracker_alloc+0x2ee/0x490 [ 185.989286][ C3] netdev_get_by_index+0x5e/0x80 [ 185.989450][ C3] fib6_nh_init+0x3d8/0x15b0 [ 185.989599][ C3] ip6_route_info_create+0xf18/0x17d0 [ 185.989757][ C3] addrconf_f6i_alloc+0x265/0x560 [ 185.989899][ C3] __ipv6_dev_ac_inc+0x25f/0xb10 [ 185.990046][ C3] addrconf_join_anycast+0x1c0/0x220 [ 185.990187][ C3] __ipv6_ifa_notify+0x6b3/0xaf0 [ 185.990326][ C3] addrconf_dad_completed+0x12b/0xe20 [ 185.990497][ C3] addrconf_dad_work+0x38c/0xab0 [ 185.990650][ C3] process_one_work+0xe2c/0x1730 [ 185.990821][ C3] worker_thread+0x587/0xd30 [ 185.990964][ C3] kthread+0x28a/0x350 [ 185.991093][ C3] ret_from_fork+0x31/0x70 [ 185.991252][ C3] ret_from_fork_asm+0x1a/0x30 [ 185.991413][ C3] [ 185.991485][ C3] -> (&ndev->lock){++-.}-{2:2} { [ 185.991651][ C3] HARDIRQ-ON-W at: [ 185.991778][ C3] __lock_acquire+0x797/0x1570 [ 185.991965][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.992174][ C3] _raw_write_lock_bh+0x38/0x50 [ 185.992368][ C3] addrconf_permanent_addr+0x6e/0x670 [ 185.992548][ C3] addrconf_notify+0x749/0xd60 [ 185.992751][ C3] notifier_call_chain+0xcd/0x150 [ 185.992959][ C3] __dev_notify_flags+0xe6/0x250 [ 185.993168][ C3] dev_change_flags+0xec/0x160 [ 185.993358][ C3] do_setlink+0x7d6/0x21e0 [ 185.993576][ C3] __rtnl_newlink+0xaa7/0xd80 [ 185.993753][ C3] rtnl_newlink+0x63/0xa0 [ 185.993958][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 185.994157][ C3] netlink_rcv_skb+0x130/0x360 [ 185.994340][ C3] netlink_unicast+0x449/0x710 [ 185.994571][ C3] netlink_sendmsg+0x723/0xbe0 [ 185.994762][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 185.994957][ C3] ___sys_sendmsg+0xee/0x170 [ 185.995132][ C3] __sys_sendmsg+0xcd/0x170 [ 185.995353][ C3] do_syscall_64+0xc6/0x1e0 [ 185.995526][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 185.995754][ C3] HARDIRQ-ON-R at: [ 185.995862][ C3] __lock_acquire+0x797/0x1570 [ 185.996060][ C3] lock_acquire.part.0+0xeb/0x330 [ 185.996233][ C3] _raw_read_lock_bh+0x44/0x80 [ 185.996432][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 185.996602][ C3] inet6_fill_link_af+0x5e/0xe0 [ 185.996808][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 185.996989][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 185.997174][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 185.997377][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 185.997578][ C3] register_netdevice+0x1177/0x1690 [ 185.997753][ C3] register_netdev+0x20/0x40 [ 185.997938][ C3] sit_init_net+0x250/0x4f0 [ 185.998127][ C3] ops_init+0x9b/0x560 [ 185.998298][ C3] register_pernet_operations+0x2db/0x710 [ 185.998512][ C3] register_pernet_device+0x2a/0x60 [ 185.998683][ C3] sit_init+0x23/0xe0 [ 185.998841][ C3] do_one_initcall+0x8d/0x1e0 [ 185.999016][ C3] do_initcalls+0x1b2/0x3e0 [ 185.999212][ C3] kernel_init_freeable+0x232/0x310 [ 185.999398][ C3] kernel_init+0x20/0x200 [ 185.999577][ C3] ret_from_fork+0x31/0x70 [ 185.999750][ C3] ret_from_fork_asm+0x1a/0x30 [ 185.999938][ C3] IN-SOFTIRQ-W at: [ 186.000044][ C3] __lock_acquire+0x797/0x1570 [ 186.000239][ C3] lock_acquire.part.0+0xeb/0x330 [ 186.000419][ C3] _raw_write_lock+0x30/0x40 [ 186.000608][ C3] addrconf_rs_timer+0xa9/0x730 [ 186.000780][ C3] call_timer_fn+0x13b/0x230 [ 186.000973][ C3] __run_timers+0x545/0x810 [ 186.001145][ C3] timer_expire_remote+0x9b/0xe0 [ 186.001333][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 186.001513][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 186.001699][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 186.001879][ C3] __do_softirq+0x1f8/0x5df [ 186.002053][ C3] irq_exit_rcu+0x97/0xc0 [ 186.002240][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 186.002450][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 186.002678][ C3] default_idle+0xf/0x20 [ 186.002858][ C3] default_idle_call+0x6d/0xb0 [ 186.003037][ C3] cpuidle_idle_call+0x1f4/0x280 [ 186.003213][ C3] do_idle+0xf9/0x160 [ 186.003369][ C3] cpu_startup_entry+0x54/0x60 [ 186.003542][ C3] start_secondary+0x21c/0x2b0 [ 186.003732][ C3] common_startup_64+0x12c/0x138 [ 186.003914][ C3] INITIAL USE at: [ 186.004016][ C3] __lock_acquire+0x797/0x1570 [ 186.004210][ C3] lock_acquire.part.0+0xeb/0x330 [ 186.004382][ C3] _raw_write_lock_bh+0x38/0x50 [ 186.004555][ C3] addrconf_permanent_addr+0x6e/0x670 [ 186.004725][ C3] addrconf_notify+0x749/0xd60 [ 186.004902][ C3] notifier_call_chain+0xcd/0x150 [ 186.005074][ C3] __dev_notify_flags+0xe6/0x250 [ 186.005260][ C3] dev_change_flags+0xec/0x160 [ 186.005460][ C3] do_setlink+0x7d6/0x21e0 [ 186.005634][ C3] __rtnl_newlink+0xaa7/0xd80 [ 186.005837][ C3] rtnl_newlink+0x63/0xa0 [ 186.006009][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 186.006209][ C3] netlink_rcv_skb+0x130/0x360 [ 186.006401][ C3] netlink_unicast+0x449/0x710 [ 186.006582][ C3] netlink_sendmsg+0x723/0xbe0 [ 186.006777][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 186.006964][ C3] ___sys_sendmsg+0xee/0x170 [ 186.007156][ C3] __sys_sendmsg+0xcd/0x170 [ 186.007333][ C3] do_syscall_64+0xc6/0x1e0 [ 186.007533][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 186.007749][ C3] INITIAL READ USE at: [ 186.007874][ C3] __lock_acquire+0x797/0x1570 [ 186.008055][ C3] lock_acquire.part.0+0xeb/0x330 [ 186.008261][ C3] _raw_read_lock_bh+0x44/0x80 [ 186.008438][ C3] inet6_fill_ifla6_attrs+0x516/0x740 [ 186.008666][ C3] inet6_fill_link_af+0x5e/0xe0 [ 186.008853][ C3] rtnl_fill_ifinfo+0x1612/0x29e0 [ 186.009027][ C3] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 186.009254][ C3] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 186.009459][ C3] rtmsg_ifinfo+0x5b/0xa0 [ 186.009749][ C3] register_netdevice+0x1177/0x1690 [ 186.009957][ C3] register_netdev+0x20/0x40 [ 186.010156][ C3] sit_init_net+0x250/0x4f0 [ 186.010454][ C3] ops_init+0x9b/0x560 [ 186.010647][ C3] register_pernet_operations+0x2db/0x710 [ 186.010871][ C3] register_pernet_device+0x2a/0x60 [ 186.011207][ C3] sit_init+0x23/0xe0 [ 186.011398][ C3] do_one_initcall+0x8d/0x1e0 [ 186.011582][ C3] do_initcalls+0x1b2/0x3e0 [ 186.011783][ C3] kernel_init_freeable+0x232/0x310 [ 186.012085][ C3] kernel_init+0x20/0x200 [ 186.012265][ C3] ret_from_fork+0x31/0x70 [ 186.012442][ C3] ret_from_fork_asm+0x1a/0x30 [ 186.012697][ C3] } [ 186.012767][ C3] ... key at: [] __key.37+0x0/0x40 [ 186.012972][ C3] ... acquired at: [ 186.013076][ C3] mark_lock+0x28d/0x3e0 [ 186.013324][ C3] mark_usage+0xd9/0x2a0 [ 186.013463][ C3] __lock_acquire+0x797/0x1570 [ 186.013601][ C3] lock_acquire.part.0+0xeb/0x330 [ 186.013750][ C3] _raw_write_lock+0x30/0x40 [ 186.013896][ C3] addrconf_rs_timer+0xa9/0x730 [ 186.014130][ C3] call_timer_fn+0x13b/0x230 [ 186.014288][ C3] __run_timers+0x545/0x810 [ 186.014449][ C3] timer_expire_remote+0x9b/0xe0 [ 186.014587][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 186.014847][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 186.014983][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 186.015132][ C3] __do_softirq+0x1f8/0x5df [ 186.015289][ C3] irq_exit_rcu+0x97/0xc0 [ 186.015527][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 186.015696][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 186.015866][ C3] default_idle+0xf/0x20 [ 186.016000][ C3] default_idle_call+0x6d/0xb0 [ 186.016240][ C3] cpuidle_idle_call+0x1f4/0x280 [ 186.016381][ C3] do_idle+0xf9/0x160 [ 186.016488][ C3] cpu_startup_entry+0x54/0x60 [ 186.016636][ C3] start_secondary+0x21c/0x2b0 [ 186.016856][ C3] common_startup_64+0x12c/0x138 [ 186.017016][ C3] [ 186.017103][ C3] [ 186.017103][ C3] stack backtrace: [ 186.017275][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 186.017678][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 186.018013][ C3] Call Trace: [ 186.018129][ C3] [ 186.018208][ C3] dump_stack_lvl+0x82/0xd0 [ 186.018468][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 186.018646][ C3] ? kernel_text_address+0x17/0xe0 [ 186.018812][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 186.018984][ C3] ? __pfx_usage_skip+0x10/0x10 [ 186.019227][ C3] ? __pfx_usage_match+0x10/0x10 [ 186.019363][ C3] ? arch_stack_walk+0x8c/0xf0 [ 186.019518][ C3] mark_lock_irq+0x4cd/0xa10 [ 186.019654][ C3] ? common_startup_64+0x12c/0x138 [ 186.019895][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 186.020034][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 186.020193][ C3] ? save_trace+0x8f/0x5b0 [ 186.020335][ C3] mark_lock+0x28d/0x3e0 [ 186.020450][ C3] ? __pfx_stack_trace_save+0x10/0x10 [ 186.020665][ C3] mark_usage+0xd9/0x2a0 [ 186.020786][ C3] __lock_acquire+0x797/0x1570 [ 186.020943][ C3] ? __pfx_validate_chain+0x10/0x10 [ 186.021095][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 186.021314][ C3] lock_acquire.part.0+0xeb/0x330 [ 186.021471][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 186.021609][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 186.021754][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 186.021971][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 186.022115][ C3] ? lock_acquire+0x32/0xc0 [ 186.022270][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 186.022407][ C3] _raw_write_lock+0x30/0x40 [ 186.022561][ C3] ? addrconf_rs_timer+0xa9/0x730 [ 186.022775][ C3] addrconf_rs_timer+0xa9/0x730 [ 186.022918][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 186.023054][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 186.023208][ C3] ? call_timer_fn+0xe8/0x230 [ 186.023429][ C3] ? lock_acquire+0x32/0xc0 [ 186.023606][ C3] ? call_timer_fn+0xe8/0x230 [ 186.023743][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 186.023879][ C3] call_timer_fn+0x13b/0x230 [ 186.024108][ C3] ? call_timer_fn+0xe8/0x230 [ 186.024261][ C3] ? call_timer_fn+0xe8/0x230 [ 186.024398][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 186.024532][ C3] ? mark_lock+0x38/0x3e0 [ 186.024638][ C3] __run_timers+0x545/0x810 [ 186.024876][ C3] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 186.025014][ C3] ? __pfx___run_timers+0x10/0x10 [ 186.025167][ C3] ? __lock_release+0x103/0x460 [ 186.025322][ C3] ? do_raw_spin_lock+0x131/0x270 [ 186.025560][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 186.025697][ C3] ? lock_acquire+0x32/0xc0 [ 186.025866][ C3] ? timer_expire_remote+0x93/0xe0 [ 186.026004][ C3] timer_expire_remote+0x9b/0xe0 [ 186.026237][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 186.026375][ C3] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 186.026575][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 186.026719][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 186.026971][ C3] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 186.027128][ C3] __do_softirq+0x1f8/0x5df [ 186.027282][ C3] irq_exit_rcu+0x97/0xc0 [ 186.027386][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 186.027546][ C3] [ 186.027698][ C3] [ 186.027786][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 186.027962][ C3] RIP: 0010:default_idle+0xf/0x20 [ 186.028128][ C3] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d a3 30 35 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 186.028713][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 186.028910][ C3] RAX: 0000000000185c17 RBX: 1ffff9200002dfc1 RCX: ffffffffb950e9d5 [ 186.029275][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb6eaa4a4 [ 186.029478][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f3709c [ 186.029685][ C3] R10: ffff88802f9b84e3 R11: ffff88802f9ad9b0 R12: 0000000000000000 [ 186.029971][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 186.030207][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 186.030353][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 186.030586][ C3] default_idle_call+0x6d/0xb0 [ 186.030740][ C3] cpuidle_idle_call+0x1f4/0x280 [ 186.030878][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 186.031020][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 186.031240][ C3] do_idle+0xf9/0x160 [ 186.031370][ C3] cpu_startup_entry+0x54/0x60 [ 186.031528][ C3] start_secondary+0x21c/0x2b0 [ 186.031669][ C3] ? __pfx_start_secondary+0x10/0x10 [ 186.031848][ C3] common_startup_64+0x12c/0x138 [ 186.032090][ C3] [ 287.102807][ T2290] br1: port 2(veth2) entered disabled state [ 287.207576][ T2291] veth2: left allmulticast mode [ 287.207770][ T2291] veth2: left promiscuous mode [ 287.208031][ T2291] br1: port 2(veth2) entered disabled state [ 287.310321][ T2292] br1: port 1(veth1) entered disabled state [ 287.412865][ T2294] veth1: left allmulticast mode [ 287.413798][ T2294] veth1: left promiscuous mode [ 287.414255][ T2294] br1: port 1(veth1) entered disabled state