[ 28.044826][ T289] br1: port 1(veth1) entered blocking state [ 28.045445][ T289] br1: port 1(veth1) entered disabled state [ 28.045963][ T289] veth1: entered allmulticast mode [ 28.049313][ T289] veth1: entered promiscuous mode [ 28.187250][ T49] br1: port 1(veth1) entered blocking state [ 28.187599][ T49] br1: port 1(veth1) entered forwarding state [ 28.312510][ T291] br1: port 2(veth2) entered blocking state [ 28.312851][ T291] br1: port 2(veth2) entered disabled state [ 28.313108][ T291] veth2: entered allmulticast mode [ 28.314923][ T291] veth2: entered promiscuous mode [ 28.429015][ T7] br1: port 2(veth2) entered blocking state [ 28.429454][ T7] br1: port 2(veth2) entered forwarding state [ 36.781913][ T316] tc (316) used greatest stack depth: 23608 bytes left [ 43.364375][ C1] [ 43.364510][ C1] ======================================================== [ 43.364724][ C1] WARNING: possible irq lock inversion dependency detected [ 43.364935][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 43.365083][ C1] -------------------------------------------------------- [ 43.365286][ C1] swapper/1/0 just changed the state of lock: [ 43.365492][ C1] ffff8880044bac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.365853][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.366054][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 43.366058][ C1] [ 43.366058][ C1] [ 43.366058][ C1] and interrupts could create inverse lock ordering between them. [ 43.366058][ C1] [ 43.366581][ C1] [ 43.366581][ C1] other info that might help us debug this: [ 43.366810][ C1] Chain exists of: [ 43.366810][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.366810][ C1] [ 43.367138][ C1] Possible interrupt unsafe locking scenario: [ 43.367138][ C1] [ 43.367367][ C1] CPU0 CPU1 [ 43.367521][ C1] ---- ---- [ 43.367661][ C1] lock(&p->alloc_lock); [ 43.367770][ C1] local_irq_disable(); [ 43.367961][ C1] lock(&br->lock); [ 43.368144][ C1] lock(lweventlist_lock); [ 43.368328][ C1] [ 43.368438][ C1] lock(&br->lock); [ 43.368550][ C1] [ 43.368550][ C1] *** DEADLOCK *** [ 43.368550][ C1] [ 43.368769][ C1] 1 lock held by swapper/1/0: [ 43.368909][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.369185][ C1] [ 43.369185][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 43.369424][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.369565][ C1] HARDIRQ-ON-W at: [ 43.369668][ C1] __lock_acquire+0x797/0x1570 [ 43.369866][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.370034][ C1] _raw_spin_lock+0x30/0x40 [ 43.370223][ C1] set_mems_allowed+0x1d/0x210 [ 43.370408][ C1] kernel_init_freeable+0x72/0x310 [ 43.370592][ C1] kernel_init+0x20/0x200 [ 43.370785][ C1] ret_from_fork+0x31/0x70 [ 43.370982][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.371164][ C1] SOFTIRQ-ON-W at: [ 43.371266][ C1] __lock_acquire+0x797/0x1570 [ 43.371453][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.371628][ C1] _raw_spin_lock+0x30/0x40 [ 43.371812][ C1] set_mems_allowed+0x1d/0x210 [ 43.371994][ C1] kernel_init_freeable+0x72/0x310 [ 43.372160][ C1] kernel_init+0x20/0x200 [ 43.372343][ C1] ret_from_fork+0x31/0x70 [ 43.372517][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.372714][ C1] INITIAL USE at: [ 43.372814][ C1] __lock_acquire+0x797/0x1570 [ 43.372981][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.373165][ C1] _raw_spin_lock+0x30/0x40 [ 43.373336][ C1] set_mems_allowed+0x1d/0x210 [ 43.373507][ C1] kernel_init_freeable+0x72/0x310 [ 43.373674][ C1] kernel_init+0x20/0x200 [ 43.373841][ C1] ret_from_fork+0x31/0x70 [ 43.374007][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.374201][ C1] } [ 43.374271][ C1] ... key at: [] __key.387+0x0/0x40 [ 43.374481][ C1] ... acquired at: [ 43.374605][ C1] __lock_acquire+0xaf0/0x1570 [ 43.374741][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.374877][ C1] _raw_spin_lock+0x30/0x40 [ 43.375014][ C1] __get_task_comm+0x27/0x70 [ 43.375150][ C1] ref_tracker_alloc+0x2ee/0x490 [ 43.375286][ C1] linkwatch_fire_event+0x196/0x200 [ 43.375423][ C1] veth_newlink+0x367/0x830 [veth] [ 43.375568][ C1] rtnl_newlink_create+0x341/0x850 [ 43.375705][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.375838][ C1] rtnl_newlink+0x63/0xa0 [ 43.375975][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.376107][ C1] netlink_rcv_skb+0x130/0x360 [ 43.376243][ C1] netlink_unicast+0x449/0x710 [ 43.376377][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.376509][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.376646][ C1] ___sys_sendmsg+0xee/0x170 [ 43.376780][ C1] __sys_sendmsg+0xcd/0x170 [ 43.376919][ C1] do_syscall_64+0xc6/0x1e0 [ 43.377055][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.377237][ C1] [ 43.377309][ C1] -> (lweventlist_lock){....}-{2:2} { [ 43.377450][ C1] INITIAL USE at: [ 43.377554][ C1] __lock_acquire+0x797/0x1570 [ 43.377723][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.377889][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.378060][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 43.378229][ C1] rtnl_getlink+0x4c9/0x970 [ 43.378398][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.378565][ C1] netlink_rcv_skb+0x130/0x360 [ 43.378731][ C1] netlink_unicast+0x449/0x710 [ 43.378901][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.379068][ C1] __sys_sendto+0x37d/0x410 [ 43.379233][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.379399][ C1] do_syscall_64+0xc6/0x1e0 [ 43.379579][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.379777][ C1] } [ 43.379860][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.380076][ C1] ... acquired at: [ 43.380198][ C1] __lock_acquire+0xaf0/0x1570 [ 43.380331][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.380476][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.380649][ C1] linkwatch_fire_event+0x74/0x200 [ 43.380788][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.381016][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.381235][ C1] dev_set_mac_address+0x28a/0x410 [ 43.381374][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.381519][ C1] do_setlink+0x17b4/0x21e0 [ 43.381668][ C1] rtnl_setlink+0x1f7/0x310 [ 43.381800][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.381933][ C1] netlink_rcv_skb+0x130/0x360 [ 43.382068][ C1] netlink_unicast+0x449/0x710 [ 43.382199][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.382335][ C1] __sys_sendto+0x37d/0x410 [ 43.382469][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.382605][ C1] do_syscall_64+0xc6/0x1e0 [ 43.382739][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.382904][ C1] [ 43.382971][ C1] -> (&br->lock){+.-.}-{2:2} { [ 43.383112][ C1] HARDIRQ-ON-W at: [ 43.383215][ C1] __lock_acquire+0x797/0x1570 [ 43.383403][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.383577][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.383765][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 43.384016][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 43.384261][ C1] br_changelink+0x36c/0x1360 [bridge] [ 43.384506][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 43.384727][ C1] rtnl_newlink_create+0x341/0x850 [ 43.384928][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.385113][ C1] rtnl_newlink+0x63/0xa0 [ 43.385301][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.385468][ C1] netlink_rcv_skb+0x130/0x360 [ 43.385653][ C1] netlink_unicast+0x449/0x710 [ 43.385827][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.386029][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.386198][ C1] ___sys_sendmsg+0xee/0x170 [ 43.386369][ C1] __sys_sendmsg+0xcd/0x170 [ 43.386537][ C1] do_syscall_64+0xc6/0x1e0 [ 43.386709][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.386914][ C1] IN-SOFTIRQ-W at: [ 43.387018][ C1] __lock_acquire+0x797/0x1570 [ 43.387198][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.387365][ C1] _raw_spin_lock+0x30/0x40 [ 43.387536][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.387775][ C1] call_timer_fn+0x13b/0x230 [ 43.387943][ C1] __run_timers+0x545/0x810 [ 43.388135][ C1] run_timer_softirq+0xe8/0x1b0 [ 43.388308][ C1] __do_softirq+0x1f8/0x5df [ 43.388478][ C1] irq_exit_rcu+0x97/0xc0 [ 43.388646][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.388847][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.389046][ C1] default_idle+0xf/0x20 [ 43.389211][ C1] default_idle_call+0x6d/0xb0 [ 43.389461][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.389635][ C1] do_idle+0xf9/0x160 [ 43.389770][ C1] cpu_startup_entry+0x54/0x60 [ 43.389937][ C1] start_secondary+0x21c/0x2b0 [ 43.390182][ C1] common_startup_64+0x12c/0x138 [ 43.390350][ C1] INITIAL USE at: [ 43.390451][ C1] __lock_acquire+0x797/0x1570 [ 43.390620][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.390871][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.391037][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 43.391274][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 43.391589][ C1] br_changelink+0x36c/0x1360 [bridge] [ 43.391792][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 43.392000][ C1] rtnl_newlink_create+0x341/0x850 [ 43.392242][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.392408][ C1] rtnl_newlink+0x63/0xa0 [ 43.392574][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.392817][ C1] netlink_rcv_skb+0x130/0x360 [ 43.392984][ C1] netlink_unicast+0x449/0x710 [ 43.393150][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.393328][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.393574][ C1] ___sys_sendmsg+0xee/0x170 [ 43.393744][ C1] __sys_sendmsg+0xcd/0x170 [ 43.393930][ C1] do_syscall_64+0xc6/0x1e0 [ 43.394196][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.394407][ C1] } [ 43.394482][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.394774][ C1] ... acquired at: [ 43.394949][ C1] mark_lock+0x28d/0x3e0 [ 43.395100][ C1] mark_usage+0xd9/0x2a0 [ 43.395232][ C1] __lock_acquire+0x797/0x1570 [ 43.395382][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.395690][ C1] _raw_spin_lock+0x30/0x40 [ 43.395841][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.396046][ C1] call_timer_fn+0x13b/0x230 [ 43.396201][ C1] __run_timers+0x545/0x810 [ 43.396437][ C1] run_timer_softirq+0xe8/0x1b0 [ 43.396572][ C1] __do_softirq+0x1f8/0x5df [ 43.396708][ C1] irq_exit_rcu+0x97/0xc0 [ 43.396841][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.397083][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.397256][ C1] default_idle+0xf/0x20 [ 43.397388][ C1] default_idle_call+0x6d/0xb0 [ 43.397525][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.397737][ C1] do_idle+0xf9/0x160 [ 43.397837][ C1] cpu_startup_entry+0x54/0x60 [ 43.397971][ C1] start_secondary+0x21c/0x2b0 [ 43.398105][ C1] common_startup_64+0x12c/0x138 [ 43.398240][ C1] [ 43.398392][ C1] [ 43.398392][ C1] stack backtrace: [ 43.398555][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 43.398761][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.399060][ C1] Call Trace: [ 43.399163][ C1] [ 43.399232][ C1] dump_stack_lvl+0x82/0xd0 [ 43.399372][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.399539][ C1] ? common_startup_64+0x12c/0x138 [ 43.399672][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.399842][ C1] ? __pfx_usage_skip+0x10/0x10 [ 43.399972][ C1] ? __pfx_usage_match+0x10/0x10 [ 43.400182][ C1] ? arch_stack_walk+0x8c/0xf0 [ 43.400317][ C1] mark_lock_irq+0x4cd/0xa10 [ 43.400449][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.400613][ C1] ? stack_trace_save+0x94/0xd0 [ 43.400842][ C1] ? add_chain_cache+0x248/0x8b0 [ 43.401000][ C1] ? save_trace+0x8f/0x5b0 [ 43.401156][ C1] mark_lock+0x28d/0x3e0 [ 43.401263][ C1] mark_usage+0xd9/0x2a0 [ 43.401366][ C1] __lock_acquire+0x797/0x1570 [ 43.401579][ C1] ? __lock_acquire+0xaf0/0x1570 [ 43.401721][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.401966][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.402120][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.402407][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.402559][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 43.402702][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.402928][ C1] ? lock_acquire+0x32/0xc0 [ 43.403061][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.403280][ C1] _raw_spin_lock+0x30/0x40 [ 43.403414][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.403627][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.403860][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.404137][ C1] call_timer_fn+0x13b/0x230 [ 43.404272][ C1] ? call_timer_fn+0xe8/0x230 [ 43.404498][ C1] ? call_timer_fn+0xe8/0x230 [ 43.404632][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 43.404763][ C1] ? mark_lock+0x38/0x3e0 [ 43.404885][ C1] __run_timers+0x545/0x810 [ 43.405097][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.405336][ C1] ? __pfx___run_timers+0x10/0x10 [ 43.405469][ C1] ? do_raw_spin_lock+0x131/0x270 [ 43.405601][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.405807][ C1] ? lock_acquire+0x32/0xc0 [ 43.405938][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 43.406071][ C1] run_timer_softirq+0xe8/0x1b0 [ 43.406203][ C1] __do_softirq+0x1f8/0x5df [ 43.406528][ C1] irq_exit_rcu+0x97/0xc0 [ 43.406631][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.406773][ C1] [ 43.406843][ C1] [ 43.406911][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.407079][ C1] RIP: 0010:default_idle+0xf/0x20 [ 43.407313][ C1] 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 [ 43.407884][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 43.408062][ C1] RAX: 000000000009cbb5 RBX: 1ffff92000029fc1 RCX: ffffffffb790e9d5 [ 43.408266][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb52aa4a4 [ 43.408573][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 43.408825][ C1] R10: ffff8880360b84e3 R11: ffff8880360bdc80 R12: 0000000000000000 [ 43.409032][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 43.409337][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.409490][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 43.409627][ C1] default_idle_call+0x6d/0xb0 [ 43.409769][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.409936][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.410072][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.410213][ C1] do_idle+0xf9/0x160 [ 43.410315][ C1] cpu_startup_entry+0x54/0x60 [ 43.410449][ C1] start_secondary+0x21c/0x2b0 [ 43.410583][ C1] ? __pfx_start_secondary+0x10/0x10 [ 43.410741][ C1] common_startup_64+0x12c/0x138 [ 43.410880][ C1] [ 55.571626][ T626] br1: port 2(veth2) entered disabled state [ 55.665508][ T627] veth2: left allmulticast mode [ 55.665679][ T627] veth2: left promiscuous mode [ 55.665925][ T627] br1: port 2(veth2) entered disabled state [ 55.760893][ T628] br1: port 1(veth1) entered disabled state [ 55.858880][ T629] veth1: left allmulticast mode [ 55.859057][ T629] veth1: left promiscuous mode [ 55.859683][ T629] br1: port 1(veth1) entered disabled state