[ 28.578627][ T276] 8021q: 802.1Q VLAN Support v1.8 [ 31.173444][ T299] br0: port 1(veth1) entered blocking state [ 31.174928][ T299] br0: port 1(veth1) entered disabled state [ 31.175281][ T299] veth1: entered allmulticast mode [ 31.177295][ T299] veth1: entered promiscuous mode [ 31.280049][ T301] br0: port 2(veth2) entered blocking state [ 31.280334][ T301] br0: port 2(veth2) entered disabled state [ 31.280651][ T301] veth2: entered allmulticast mode [ 31.282691][ T301] veth2: entered promiscuous mode [ 31.557752][ T51] br0: port 1(veth1) entered blocking state [ 31.558082][ T51] br0: port 1(veth1) entered forwarding state [ 31.668009][ T62] br0: port 2(veth2) entered blocking state [ 31.668657][ T62] br0: port 2(veth2) entered forwarding state [ 46.890590][ C3] [ 46.890749][ C3] ======================================================== [ 46.890959][ C3] WARNING: possible irq lock inversion dependency detected [ 46.891159][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 46.891295][ C3] -------------------------------------------------------- [ 46.891527][ C3] swapper/3/0 just changed the state of lock: [ 46.891713][ C3] ffff888006c82c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.892080][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.892290][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 46.892294][ C3] [ 46.892294][ C3] [ 46.892294][ C3] and interrupts could create inverse lock ordering between them. [ 46.892294][ C3] [ 46.892935][ C3] [ 46.892935][ C3] other info that might help us debug this: [ 46.893130][ C3] Chain exists of: [ 46.893130][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.893130][ C3] [ 46.893441][ C3] Possible interrupt unsafe locking scenario: [ 46.893441][ C3] [ 46.893643][ C3] CPU0 CPU1 [ 46.893777][ C3] ---- ---- [ 46.893910][ C3] lock(&p->alloc_lock); [ 46.894015][ C3] local_irq_disable(); [ 46.894177][ C3] lock(&br->lock); [ 46.894343][ C3] lock(lweventlist_lock); [ 46.894527][ C3] [ 46.894629][ C3] lock(&br->lock); [ 46.894734][ C3] [ 46.894734][ C3] *** DEADLOCK *** [ 46.894734][ C3] [ 46.894942][ C3] 1 lock held by swapper/3/0: [ 46.895076][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.895357][ C3] [ 46.895357][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 46.895594][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.895736][ C3] HARDIRQ-ON-W at: [ 46.895840][ C3] __lock_acquire+0x797/0x1570 [ 46.896016][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.896183][ C3] _raw_spin_lock+0x30/0x40 [ 46.896354][ C3] set_mems_allowed+0x1d/0x210 [ 46.896534][ C3] kernel_init_freeable+0x72/0x310 [ 46.896703][ C3] kernel_init+0x20/0x200 [ 46.896877][ C3] ret_from_fork+0x31/0x70 [ 46.897046][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.897212][ C3] SOFTIRQ-ON-W at: [ 46.897312][ C3] __lock_acquire+0x797/0x1570 [ 46.897484][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.897657][ C3] _raw_spin_lock+0x30/0x40 [ 46.897825][ C3] set_mems_allowed+0x1d/0x210 [ 46.897993][ C3] kernel_init_freeable+0x72/0x310 [ 46.898173][ C3] kernel_init+0x20/0x200 [ 46.898343][ C3] ret_from_fork+0x31/0x70 [ 46.898528][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.898707][ C3] INITIAL USE at: [ 46.898807][ C3] __lock_acquire+0x797/0x1570 [ 46.898976][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.899144][ C3] _raw_spin_lock+0x30/0x40 [ 46.899317][ C3] set_mems_allowed+0x1d/0x210 [ 46.899485][ C3] kernel_init_freeable+0x72/0x310 [ 46.899660][ C3] kernel_init+0x20/0x200 [ 46.899833][ C3] ret_from_fork+0x31/0x70 [ 46.900000][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.900185][ C3] } [ 46.900260][ C3] ... key at: [] __key.387+0x0/0x40 [ 46.900467][ C3] ... acquired at: [ 46.900580][ C3] __lock_acquire+0xaf0/0x1570 [ 46.900732][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.900866][ C3] _raw_spin_lock+0x30/0x40 [ 46.901002][ C3] __get_task_comm+0x27/0x70 [ 46.901136][ C3] ref_tracker_alloc+0x2ee/0x490 [ 46.901275][ C3] linkwatch_fire_event+0x196/0x200 [ 46.901413][ C3] veth_newlink+0x367/0x830 [veth] [ 46.901554][ C3] rtnl_newlink_create+0x341/0x850 [ 46.901691][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.901827][ C3] rtnl_newlink+0x63/0xa0 [ 46.901960][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.902094][ C3] netlink_rcv_skb+0x130/0x360 [ 46.902231][ C3] netlink_unicast+0x449/0x710 [ 46.902364][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.902496][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.902632][ C3] ___sys_sendmsg+0xee/0x170 [ 46.902773][ C3] __sys_sendmsg+0xcd/0x170 [ 46.902907][ C3] do_syscall_64+0xc6/0x1e0 [ 46.903046][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.903218][ C3] [ 46.903287][ C3] -> (lweventlist_lock){....}-{2:2} { [ 46.903427][ C3] INITIAL USE at: [ 46.903530][ C3] __lock_acquire+0x797/0x1570 [ 46.903700][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.903870][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.904057][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 46.904227][ C3] rtnl_getlink+0x4c9/0x970 [ 46.904397][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.904578][ C3] netlink_rcv_skb+0x130/0x360 [ 46.904745][ C3] netlink_unicast+0x449/0x710 [ 46.904915][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.905092][ C3] __sys_sendto+0x37d/0x410 [ 46.905260][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.905427][ C3] do_syscall_64+0xc6/0x1e0 [ 46.905598][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.905803][ C3] } [ 46.905871][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.906083][ C3] ... acquired at: [ 46.906190][ C3] __lock_acquire+0xaf0/0x1570 [ 46.906330][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.906462][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.906605][ C3] linkwatch_fire_event+0x74/0x200 [ 46.906740][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.906966][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.907163][ C3] dev_set_mac_address+0x28a/0x410 [ 46.907315][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.907447][ C3] do_setlink+0x17b4/0x21e0 [ 46.907594][ C3] rtnl_setlink+0x1f7/0x310 [ 46.907735][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.907872][ C3] netlink_rcv_skb+0x130/0x360 [ 46.908004][ C3] netlink_unicast+0x449/0x710 [ 46.908140][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.908276][ C3] __sys_sendto+0x37d/0x410 [ 46.908415][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.908559][ C3] do_syscall_64+0xc6/0x1e0 [ 46.908695][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.908869][ C3] [ 46.908942][ C3] -> (&br->lock){+.-.}-{2:2} { [ 46.909088][ C3] HARDIRQ-ON-W at: [ 46.909189][ C3] __lock_acquire+0x797/0x1570 [ 46.909369][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.909545][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.909725][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.909979][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.910228][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.910437][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.910658][ C3] rtnl_newlink_create+0x341/0x850 [ 46.910829][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.910997][ C3] rtnl_newlink+0x63/0xa0 [ 46.911173][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.911343][ C3] netlink_rcv_skb+0x130/0x360 [ 46.911514][ C3] netlink_unicast+0x449/0x710 [ 46.911684][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.911856][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.912033][ C3] ___sys_sendmsg+0xee/0x170 [ 46.912203][ C3] __sys_sendmsg+0xcd/0x170 [ 46.912373][ C3] do_syscall_64+0xc6/0x1e0 [ 46.912544][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.912745][ C3] IN-SOFTIRQ-W at: [ 46.912847][ C3] __lock_acquire+0x797/0x1570 [ 46.913019][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.913196][ C3] _raw_spin_lock+0x30/0x40 [ 46.913368][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.913616][ C3] call_timer_fn+0x13b/0x230 [ 46.913786][ C3] __run_timers+0x545/0x810 [ 46.913963][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.914132][ C3] __do_softirq+0x1f8/0x5df [ 46.914325][ C3] irq_exit_rcu+0x97/0xc0 [ 46.914503][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.914706][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.914919][ C3] default_idle+0xf/0x20 [ 46.915093][ C3] default_idle_call+0x6d/0xb0 [ 46.915259][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.915441][ C3] do_idle+0xf9/0x160 [ 46.915577][ C3] cpu_startup_entry+0x54/0x60 [ 46.915751][ C3] start_secondary+0x21c/0x2b0 [ 46.915925][ C3] common_startup_64+0x12c/0x138 [ 46.916099][ C3] INITIAL USE at: [ 46.916202][ C3] __lock_acquire+0x797/0x1570 [ 46.916371][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.916545][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.916724][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.916966][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.917229][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.917517][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.917725][ C3] rtnl_newlink_create+0x341/0x850 [ 46.917897][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.918149][ C3] rtnl_newlink+0x63/0xa0 [ 46.918325][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.918493][ C3] netlink_rcv_skb+0x130/0x360 [ 46.918660][ C3] netlink_unicast+0x449/0x710 [ 46.918904][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.919069][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.919250][ C3] ___sys_sendmsg+0xee/0x170 [ 46.919509][ C3] __sys_sendmsg+0xcd/0x170 [ 46.919685][ C3] do_syscall_64+0xc6/0x1e0 [ 46.919854][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.920135][ C3] } [ 46.920217][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.920489][ C3] ... acquired at: [ 46.920596][ C3] mark_lock+0x28d/0x3e0 [ 46.920810][ C3] mark_usage+0xd9/0x2a0 [ 46.920948][ C3] __lock_acquire+0x797/0x1570 [ 46.921088][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.921230][ C3] _raw_spin_lock+0x30/0x40 [ 46.921364][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.921651][ C3] call_timer_fn+0x13b/0x230 [ 46.921786][ C3] __run_timers+0x545/0x810 [ 46.921926][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.922062][ C3] __do_softirq+0x1f8/0x5df [ 46.922272][ C3] irq_exit_rcu+0x97/0xc0 [ 46.922411][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.922582][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.922823][ C3] default_idle+0xf/0x20 [ 46.922957][ C3] default_idle_call+0x6d/0xb0 [ 46.923097][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.923244][ C3] do_idle+0xf9/0x160 [ 46.923347][ C3] cpu_startup_entry+0x54/0x60 [ 46.923642][ C3] start_secondary+0x21c/0x2b0 [ 46.923781][ C3] common_startup_64+0x12c/0x138 [ 46.923917][ C3] [ 46.923985][ C3] [ 46.923985][ C3] stack backtrace: [ 46.924224][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 46.924432][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.924752][ C3] Call Trace: [ 46.924933][ C3] [ 46.925009][ C3] dump_stack_lvl+0x82/0xd0 [ 46.925147][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.925316][ C3] ? common_startup_64+0x12c/0x138 [ 46.925451][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.925691][ C3] ? __pfx_usage_skip+0x10/0x10 [ 46.925833][ C3] ? __pfx_usage_match+0x10/0x10 [ 46.925972][ C3] ? arch_stack_walk+0x8c/0xf0 [ 46.926111][ C3] mark_lock_irq+0x4cd/0xa10 [ 46.926322][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.926455][ C3] ? stack_trace_save+0x94/0xd0 [ 46.926589][ C3] ? add_chain_cache+0x248/0x8b0 [ 46.926725][ C3] ? save_trace+0x8f/0x5b0 [ 46.926938][ C3] mark_lock+0x28d/0x3e0 [ 46.927041][ C3] mark_usage+0xd9/0x2a0 [ 46.927146][ C3] __lock_acquire+0x797/0x1570 [ 46.927282][ C3] ? __lock_acquire+0xaf0/0x1570 [ 46.927415][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.927726][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.927867][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.928072][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.928282][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 46.928417][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.928625][ C3] ? lock_acquire+0x32/0xc0 [ 46.928757][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.929036][ C3] _raw_spin_lock+0x30/0x40 [ 46.929171][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.929374][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.929576][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.929890][ C3] call_timer_fn+0x13b/0x230 [ 46.930024][ C3] ? call_timer_fn+0xe8/0x230 [ 46.930168][ C3] ? call_timer_fn+0xe8/0x230 [ 46.930381][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 46.930516][ C3] ? mark_lock+0x38/0x3e0 [ 46.930636][ C3] __run_timers+0x545/0x810 [ 46.930769][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.931089][ C3] ? __pfx___run_timers+0x10/0x10 [ 46.931228][ C3] ? do_raw_spin_lock+0x131/0x270 [ 46.931365][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.931499][ C3] ? lock_acquire+0x32/0xc0 [ 46.931643][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 46.931856][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.931989][ C3] __do_softirq+0x1f8/0x5df [ 46.932122][ C3] irq_exit_rcu+0x97/0xc0 [ 46.932223][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.932435][ C3] [ 46.932504][ C3] [ 46.932572][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.932748][ C3] RIP: 0010:default_idle+0xf/0x20 [ 46.932889][ 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 93 20 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 [ 46.933452][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 46.933628][ C3] RAX: 000000000008ff47 RBX: 1ffff9200002dfc1 RCX: ffffffff8930f9e5 [ 46.933910][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff86caa4a4 [ 46.934121][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 46.934480][ C3] R10: ffff8880361b84e3 R11: ffff8880361bdc80 R12: 0000000000000000 [ 46.934685][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 46.934889][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.935031][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 46.935241][ C3] default_idle_call+0x6d/0xb0 [ 46.935380][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.935511][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.935649][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.935862][ C3] do_idle+0xf9/0x160 [ 46.935989][ C3] cpu_startup_entry+0x54/0x60 [ 46.936122][ C3] start_secondary+0x21c/0x2b0 [ 46.936256][ C3] ? __pfx_start_secondary+0x10/0x10 [ 46.936474][ C3] common_startup_64+0x12c/0x138 [ 46.936617][ C3] [ 63.037319][ T377] br0: port 2(veth2) entered disabled state [ 63.138171][ T378] br0: port 1(veth1) entered disabled state [ 63.241775][ T379] veth2: left allmulticast mode [ 63.242017][ T379] veth2: left promiscuous mode [ 63.242272][ T379] br0: port 2(veth2) entered disabled state [ 63.243251][ T379] veth1: left allmulticast mode [ 63.243392][ T379] veth1: left promiscuous mode [ 63.243648][ T379] br0: port 1(veth1) entered disabled state