[ 28.648717][ T288] br1: port 1(veth1) entered blocking state [ 28.649897][ T288] br1: port 1(veth1) entered disabled state [ 28.650186][ T288] veth1: entered allmulticast mode [ 28.652041][ T288] veth1: entered promiscuous mode [ 28.783115][ T50] br1: port 1(veth1) entered blocking state [ 28.783426][ T50] br1: port 1(veth1) entered forwarding state [ 28.890779][ T290] br1: port 2(veth2) entered blocking state [ 28.891033][ T290] br1: port 2(veth2) entered disabled state [ 28.891276][ T290] veth2: entered allmulticast mode [ 28.893061][ T290] veth2: entered promiscuous mode [ 29.020348][ T51] br1: port 2(veth2) entered blocking state [ 29.020696][ T51] br1: port 2(veth2) entered forwarding state [ 43.815933][ C3] [ 43.816040][ C3] ======================================================== [ 43.816263][ C3] WARNING: possible irq lock inversion dependency detected [ 43.816487][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 43.816637][ C3] -------------------------------------------------------- [ 43.816855][ C3] swapper/3/0 just changed the state of lock: [ 43.817039][ C3] ffff88800729ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.817425][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.817639][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 43.817643][ C3] [ 43.817643][ C3] [ 43.817643][ C3] and interrupts could create inverse lock ordering between them. [ 43.817643][ C3] [ 43.818177][ C3] [ 43.818177][ C3] other info that might help us debug this: [ 43.818392][ C3] Chain exists of: [ 43.818392][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.818392][ C3] [ 43.818719][ C3] Possible interrupt unsafe locking scenario: [ 43.818719][ C3] [ 43.818933][ C3] CPU0 CPU1 [ 43.819080][ C3] ---- ---- [ 43.819233][ C3] lock(&p->alloc_lock); [ 43.819353][ C3] local_irq_disable(); [ 43.819532][ C3] lock(&br->lock); [ 43.819714][ C3] lock(lweventlist_lock); [ 43.819894][ C3] [ 43.820003][ C3] lock(&br->lock); [ 43.820116][ C3] [ 43.820116][ C3] *** DEADLOCK *** [ 43.820116][ C3] [ 43.820327][ C3] 1 lock held by swapper/3/0: [ 43.820480][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.820778][ C3] [ 43.820778][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 43.821025][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.821173][ C3] HARDIRQ-ON-W at: [ 43.821285][ C3] __lock_acquire+0x797/0x1570 [ 43.821473][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.821685][ C3] _raw_spin_lock+0x30/0x40 [ 43.821870][ C3] set_mems_allowed+0x1d/0x210 [ 43.822056][ C3] kernel_init_freeable+0x72/0x310 [ 43.822239][ C3] kernel_init+0x20/0x200 [ 43.822424][ C3] ret_from_fork+0x31/0x70 [ 43.822608][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.822793][ C3] SOFTIRQ-ON-W at: [ 43.822904][ C3] __lock_acquire+0x797/0x1570 [ 43.823086][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.823271][ C3] _raw_spin_lock+0x30/0x40 [ 43.823456][ C3] set_mems_allowed+0x1d/0x210 [ 43.823639][ C3] kernel_init_freeable+0x72/0x310 [ 43.823836][ C3] kernel_init+0x20/0x200 [ 43.824029][ C3] ret_from_fork+0x31/0x70 [ 43.824218][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.824403][ C3] INITIAL USE at: [ 43.824516][ C3] __lock_acquire+0x797/0x1570 [ 43.824702][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.824897][ C3] _raw_spin_lock+0x30/0x40 [ 43.825089][ C3] set_mems_allowed+0x1d/0x210 [ 43.825291][ C3] kernel_init_freeable+0x72/0x310 [ 43.825475][ C3] kernel_init+0x20/0x200 [ 43.825660][ C3] ret_from_fork+0x31/0x70 [ 43.825849][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.826031][ C3] } [ 43.826107][ C3] ... key at: [] __key.387+0x0/0x40 [ 43.826330][ C3] ... acquired at: [ 43.826444][ C3] __lock_acquire+0xaf0/0x1570 [ 43.826594][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.826752][ C3] _raw_spin_lock+0x30/0x40 [ 43.826897][ C3] __get_task_comm+0x27/0x70 [ 43.827041][ C3] ref_tracker_alloc+0x2ee/0x490 [ 43.827192][ C3] linkwatch_fire_event+0x196/0x200 [ 43.827336][ C3] veth_newlink+0x367/0x830 [veth] [ 43.827487][ C3] rtnl_newlink_create+0x341/0x850 [ 43.827631][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.827780][ C3] rtnl_newlink+0x63/0xa0 [ 43.827925][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.828072][ C3] netlink_rcv_skb+0x130/0x360 [ 43.828228][ C3] netlink_unicast+0x449/0x710 [ 43.828379][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.828523][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.828670][ C3] ___sys_sendmsg+0xee/0x170 [ 43.828818][ C3] __sys_sendmsg+0xcd/0x170 [ 43.828967][ C3] do_syscall_64+0xc6/0x1e0 [ 43.829120][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.829304][ C3] [ 43.829374][ C3] -> (lweventlist_lock){....}-{2:2} { [ 43.829532][ C3] INITIAL USE at: [ 43.829647][ C3] __lock_acquire+0x797/0x1570 [ 43.829834][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.830015][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.830202][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 43.830391][ C3] rtnl_getlink+0x4c9/0x970 [ 43.830572][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.830764][ C3] netlink_rcv_skb+0x130/0x360 [ 43.830945][ C3] netlink_unicast+0x449/0x710 [ 43.831124][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.831306][ C3] __sys_sendto+0x37d/0x410 [ 43.831503][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.831697][ C3] do_syscall_64+0xc6/0x1e0 [ 43.831885][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.832111][ C3] } [ 43.832191][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.832412][ C3] ... acquired at: [ 43.832519][ C3] __lock_acquire+0xaf0/0x1570 [ 43.832673][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.832831][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.832979][ C3] linkwatch_fire_event+0x74/0x200 [ 43.833123][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.833348][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.833562][ C3] dev_set_mac_address+0x28a/0x410 [ 43.833722][ C3] dev_set_mac_address_user+0x31/0x50 [ 43.833870][ C3] do_setlink+0x17b4/0x21e0 [ 43.834015][ C3] rtnl_setlink+0x1f7/0x310 [ 43.834161][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.834310][ C3] netlink_rcv_skb+0x130/0x360 [ 43.834454][ C3] netlink_unicast+0x449/0x710 [ 43.834601][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.834750][ C3] __sys_sendto+0x37d/0x410 [ 43.834895][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.835041][ C3] do_syscall_64+0xc6/0x1e0 [ 43.835188][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.835374][ C3] [ 43.835523][ C3] -> (&br->lock){+.-.}-{2:2} { [ 43.835671][ C3] HARDIRQ-ON-W at: [ 43.835781][ C3] __lock_acquire+0x797/0x1570 [ 43.835963][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.836226][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.836410][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 43.836666][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 43.837015][ C3] br_changelink+0x36c/0x1360 [bridge] [ 43.837237][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 43.837458][ C3] rtnl_newlink_create+0x341/0x850 [ 43.837640][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.837827][ C3] rtnl_newlink+0x63/0xa0 [ 43.838010][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.838197][ C3] netlink_rcv_skb+0x130/0x360 [ 43.838379][ C3] netlink_unicast+0x449/0x710 [ 43.838647][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.838834][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.839015][ C3] ___sys_sendmsg+0xee/0x170 [ 43.839204][ C3] __sys_sendmsg+0xcd/0x170 [ 43.839470][ C3] do_syscall_64+0xc6/0x1e0 [ 43.839663][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.839965][ C3] IN-SOFTIRQ-W at: [ 43.840074][ C3] __lock_acquire+0x797/0x1570 [ 43.840261][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.840528][ C3] _raw_spin_lock+0x30/0x40 [ 43.840718][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.840977][ C3] call_timer_fn+0x13b/0x230 [ 43.841162][ C3] __run_timers+0x545/0x810 [ 43.841429][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.841609][ C3] __do_softirq+0x1f8/0x5df [ 43.841790][ C3] irq_exit_rcu+0x97/0xc0 [ 43.842054][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.842273][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.842490][ C3] default_idle+0xf/0x20 [ 43.842755][ C3] default_idle_call+0x6d/0xb0 [ 43.842938][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.843117][ C3] do_idle+0xf9/0x160 [ 43.843275][ C3] cpu_startup_entry+0x54/0x60 [ 43.843539][ C3] start_secondary+0x21c/0x2b0 [ 43.843728][ C3] common_startup_64+0x12c/0x138 [ 43.843909][ C3] INITIAL USE at: [ 43.844100][ C3] __lock_acquire+0x797/0x1570 [ 43.844286][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.844472][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.844739][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 43.844992][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 43.845254][ C3] br_changelink+0x36c/0x1360 [bridge] [ 43.845556][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 43.845782][ C3] rtnl_newlink_create+0x341/0x850 [ 43.845962][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.846145][ C3] rtnl_newlink+0x63/0xa0 [ 43.846410][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.846593][ C3] netlink_rcv_skb+0x130/0x360 [ 43.846771][ C3] netlink_unicast+0x449/0x710 [ 43.847037][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.847226][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.847406][ C3] ___sys_sendmsg+0xee/0x170 [ 43.847678][ C3] __sys_sendmsg+0xcd/0x170 [ 43.847942][ C3] do_syscall_64+0xc6/0x1e0 [ 43.848122][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.848344][ C3] } [ 43.848417][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.848793][ C3] ... acquired at: [ 43.848903][ C3] mark_lock+0x28d/0x3e0 [ 43.849051][ C3] mark_usage+0xd9/0x2a0 [ 43.849201][ C3] __lock_acquire+0x797/0x1570 [ 43.849413][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.849564][ C3] _raw_spin_lock+0x30/0x40 [ 43.849790][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.850017][ C3] call_timer_fn+0x13b/0x230 [ 43.850161][ C3] __run_timers+0x545/0x810 [ 43.850378][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.850525][ C3] __do_softirq+0x1f8/0x5df [ 43.850669][ C3] irq_exit_rcu+0x97/0xc0 [ 43.850893][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.851166][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.851345][ C3] default_idle+0xf/0x20 [ 43.851490][ C3] default_idle_call+0x6d/0xb0 [ 43.851636][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.851781][ C3] do_idle+0xf9/0x160 [ 43.851891][ C3] cpu_startup_entry+0x54/0x60 [ 43.852035][ C3] start_secondary+0x21c/0x2b0 [ 43.852255][ C3] common_startup_64+0x12c/0x138 [ 43.852401][ C3] [ 43.852477][ C3] [ 43.852477][ C3] stack backtrace: [ 43.852656][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 43.852958][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.853278][ C3] Call Trace: [ 43.853388][ C3] [ 43.853465][ C3] dump_stack_lvl+0x82/0xd0 [ 43.853619][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.853819][ C3] ? common_startup_64+0x12c/0x138 [ 43.853965][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.854150][ C3] ? __pfx_usage_skip+0x10/0x10 [ 43.854293][ C3] ? __pfx_usage_match+0x10/0x10 [ 43.854438][ C3] ? arch_stack_walk+0x8c/0xf0 [ 43.854581][ C3] mark_lock_irq+0x4cd/0xa10 [ 43.854727][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.854949][ C3] ? stack_trace_save+0x94/0xd0 [ 43.855094][ C3] ? add_chain_cache+0x248/0x8b0 [ 43.855239][ C3] ? save_trace+0x8f/0x5b0 [ 43.855385][ C3] mark_lock+0x28d/0x3e0 [ 43.855499][ C3] mark_usage+0xd9/0x2a0 [ 43.855612][ C3] __lock_acquire+0x797/0x1570 [ 43.855764][ C3] ? __lock_acquire+0xaf0/0x1570 [ 43.855910][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.856171][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.856404][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.856619][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.856765][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 43.856912][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.857223][ C3] ? lock_acquire+0x32/0xc0 [ 43.857372][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.857591][ C3] _raw_spin_lock+0x30/0x40 [ 43.857816][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.858035][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.858258][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.858596][ C3] call_timer_fn+0x13b/0x230 [ 43.858743][ C3] ? call_timer_fn+0xe8/0x230 [ 43.858885][ C3] ? call_timer_fn+0xe8/0x230 [ 43.859029][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 43.859180][ C3] ? mark_lock+0x38/0x3e0 [ 43.859375][ C3] __run_timers+0x545/0x810 [ 43.859527][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.859786][ C3] ? __pfx___run_timers+0x10/0x10 [ 43.859926][ C3] ? do_raw_spin_lock+0x131/0x270 [ 43.860151][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.860294][ C3] ? lock_acquire+0x32/0xc0 [ 43.860438][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 43.860586][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.860807][ C3] __do_softirq+0x1f8/0x5df [ 43.860954][ C3] irq_exit_rcu+0x97/0xc0 [ 43.861070][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.861217][ C3] [ 43.861374][ C3] [ 43.861447][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.861625][ C3] RIP: 0010:default_idle+0xf/0x20 [ 43.861778][ 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 [ 43.862396][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 43.862589][ C3] RAX: 00000000000af6db RBX: 1ffff9200002dfc1 RCX: ffffffffa670e9d5 [ 43.862891][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa40aa4a4 [ 43.863106][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 43.863324][ C3] R10: ffff8880361b84e3 R11: 1ffff110003a934c R12: 0000000000000000 [ 43.863636][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 43.863862][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.864009][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 43.864158][ C3] default_idle_call+0x6d/0xb0 [ 43.864386][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.864538][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.864764][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.864913][ C3] do_idle+0xf9/0x160 [ 43.865022][ C3] cpu_startup_entry+0x54/0x60 [ 43.865167][ C3] start_secondary+0x21c/0x2b0 [ 43.865310][ C3] ? __pfx_start_secondary+0x10/0x10 [ 43.865462][ C3] common_startup_64+0x12c/0x138 [ 43.865712][ C3] [ 55.731117][ T627] br1: port 2(veth2) entered disabled state [ 55.824804][ T629] veth2: left allmulticast mode [ 55.825011][ T629] veth2: left promiscuous mode [ 55.825274][ T629] br1: port 2(veth2) entered disabled state [ 55.958639][ T630] br1: port 1(veth1) entered disabled state [ 56.069694][ T631] veth1: left allmulticast mode [ 56.070658][ T631] veth1: left promiscuous mode [ 56.071107][ T631] br1: port 1(veth1) entered disabled state