[ 26.875877][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 29.271184][ T296] br0: port 1(veth1) entered blocking state [ 29.271902][ T296] br0: port 1(veth1) entered disabled state [ 29.272277][ T296] veth1: entered allmulticast mode [ 29.274169][ T296] veth1: entered promiscuous mode [ 29.390397][ T298] br0: port 2(veth2) entered blocking state [ 29.390646][ T298] br0: port 2(veth2) entered disabled state [ 29.390905][ T298] veth2: entered allmulticast mode [ 29.393684][ T298] veth2: entered promiscuous mode [ 29.756888][ T49] br0: port 1(veth1) entered blocking state [ 29.757222][ T49] br0: port 1(veth1) entered forwarding state [ 29.862493][ T50] br0: port 2(veth2) entered blocking state [ 29.862868][ T50] br0: port 2(veth2) entered forwarding state [ 44.842303][ C2] [ 44.842414][ C2] ======================================================== [ 44.842648][ C2] WARNING: possible irq lock inversion dependency detected [ 44.842876][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 44.843021][ C2] -------------------------------------------------------- [ 44.843237][ C2] swapper/2/0 just changed the state of lock: [ 44.843430][ C2] ffff88800597ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.843830][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.844044][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 44.844048][ C2] [ 44.844048][ C2] [ 44.844048][ C2] and interrupts could create inverse lock ordering between them. [ 44.844048][ C2] [ 44.844587][ C2] [ 44.844587][ C2] other info that might help us debug this: [ 44.844802][ C2] Chain exists of: [ 44.844802][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.844802][ C2] [ 44.845128][ C2] Possible interrupt unsafe locking scenario: [ 44.845128][ C2] [ 44.845359][ C2] CPU0 CPU1 [ 44.845502][ C2] ---- ---- [ 44.845646][ C2] lock(&p->alloc_lock); [ 44.845757][ C2] local_irq_disable(); [ 44.845935][ C2] lock(&br->lock); [ 44.846115][ C2] lock(lweventlist_lock); [ 44.846297][ C2] [ 44.846409][ C2] lock(&br->lock); [ 44.846525][ C2] [ 44.846525][ C2] *** DEADLOCK *** [ 44.846525][ C2] [ 44.846737][ C2] 1 lock held by swapper/2/0: [ 44.846885][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.847189][ C2] [ 44.847189][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 44.847444][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.847604][ C2] HARDIRQ-ON-W at: [ 44.847718][ C2] __lock_acquire+0x797/0x1570 [ 44.847907][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.848092][ C2] _raw_spin_lock+0x30/0x40 [ 44.848279][ C2] set_mems_allowed+0x1d/0x210 [ 44.848465][ C2] kernel_init_freeable+0x72/0x310 [ 44.848650][ C2] kernel_init+0x20/0x200 [ 44.848837][ C2] ret_from_fork+0x31/0x70 [ 44.849024][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.849207][ C2] SOFTIRQ-ON-W at: [ 44.849320][ C2] __lock_acquire+0x797/0x1570 [ 44.849505][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.849689][ C2] _raw_spin_lock+0x30/0x40 [ 44.849876][ C2] set_mems_allowed+0x1d/0x210 [ 44.850069][ C2] kernel_init_freeable+0x72/0x310 [ 44.850264][ C2] kernel_init+0x20/0x200 [ 44.850444][ C2] ret_from_fork+0x31/0x70 [ 44.850630][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.850825][ C2] INITIAL USE at: [ 44.850940][ C2] __lock_acquire+0x797/0x1570 [ 44.851123][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.851313][ C2] _raw_spin_lock+0x30/0x40 [ 44.851499][ C2] set_mems_allowed+0x1d/0x210 [ 44.851683][ C2] kernel_init_freeable+0x72/0x310 [ 44.851863][ C2] kernel_init+0x20/0x200 [ 44.852054][ C2] ret_from_fork+0x31/0x70 [ 44.852240][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.852422][ C2] } [ 44.852504][ C2] ... key at: [] __key.387+0x0/0x40 [ 44.852730][ C2] ... acquired at: [ 44.852846][ C2] __lock_acquire+0xaf0/0x1570 [ 44.852994][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.853157][ C2] _raw_spin_lock+0x30/0x40 [ 44.853307][ C2] __get_task_comm+0x27/0x70 [ 44.853461][ C2] ref_tracker_alloc+0x2ee/0x490 [ 44.853609][ C2] linkwatch_fire_event+0x196/0x200 [ 44.853757][ C2] veth_newlink+0x367/0x830 [veth] [ 44.853920][ C2] rtnl_newlink_create+0x341/0x850 [ 44.854071][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.854218][ C2] rtnl_newlink+0x63/0xa0 [ 44.854369][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.854517][ C2] netlink_rcv_skb+0x130/0x360 [ 44.854670][ C2] netlink_unicast+0x449/0x710 [ 44.854817][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.854968][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.855117][ C2] ___sys_sendmsg+0xee/0x170 [ 44.855266][ C2] __sys_sendmsg+0xcd/0x170 [ 44.855412][ C2] do_syscall_64+0xc6/0x1e0 [ 44.855558][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.855750][ C2] [ 44.855826][ C2] -> (lweventlist_lock){....}-{2:2} { [ 44.855978][ C2] INITIAL USE at: [ 44.856087][ C2] __lock_acquire+0x797/0x1570 [ 44.856274][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.856459][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.856645][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 44.856843][ C2] rtnl_getlink+0x4c9/0x970 [ 44.857029][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.857215][ C2] netlink_rcv_skb+0x130/0x360 [ 44.857415][ C2] netlink_unicast+0x449/0x710 [ 44.857597][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.857783][ C2] __sys_sendto+0x37d/0x410 [ 44.857974][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.858163][ C2] do_syscall_64+0xc6/0x1e0 [ 44.858350][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.858573][ C2] } [ 44.858648][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.858869][ C2] ... acquired at: [ 44.858981][ C2] __lock_acquire+0xaf0/0x1570 [ 44.859133][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.859286][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.859431][ C2] linkwatch_fire_event+0x74/0x200 [ 44.859574][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.859796][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.860006][ C2] dev_set_mac_address+0x28a/0x410 [ 44.860155][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.860306][ C2] do_setlink+0x17b4/0x21e0 [ 44.860457][ C2] rtnl_setlink+0x1f7/0x310 [ 44.860604][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.860758][ C2] netlink_rcv_skb+0x130/0x360 [ 44.860904][ C2] netlink_unicast+0x449/0x710 [ 44.861051][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.861198][ C2] __sys_sendto+0x37d/0x410 [ 44.861347][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.861491][ C2] do_syscall_64+0xc6/0x1e0 [ 44.861643][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.861823][ C2] [ 44.861895][ C2] -> (&br->lock){+.-.}-{2:2} { [ 44.862046][ C2] HARDIRQ-ON-W at: [ 44.862164][ C2] __lock_acquire+0x797/0x1570 [ 44.862359][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.862542][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.862723][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 44.863067][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.863321][ C2] br_changelink+0x36c/0x1360 [bridge] [ 44.863537][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 44.863756][ C2] rtnl_newlink_create+0x341/0x850 [ 44.863939][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.864125][ C2] rtnl_newlink+0x63/0xa0 [ 44.864306][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.864647][ C2] netlink_rcv_skb+0x130/0x360 [ 44.864826][ C2] netlink_unicast+0x449/0x710 [ 44.865011][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.865270][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.865454][ C2] ___sys_sendmsg+0xee/0x170 [ 44.865644][ C2] __sys_sendmsg+0xcd/0x170 [ 44.865827][ C2] do_syscall_64+0xc6/0x1e0 [ 44.866091][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.866310][ C2] IN-SOFTIRQ-W at: [ 44.866420][ C2] __lock_acquire+0x797/0x1570 [ 44.866603][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.866799][ C2] _raw_spin_lock+0x30/0x40 [ 44.866989][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.867244][ C2] call_timer_fn+0x13b/0x230 [ 44.867503][ C2] __run_timers+0x545/0x810 [ 44.867688][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.867869][ C2] __do_softirq+0x1f8/0x5df [ 44.868148][ C2] irq_exit_rcu+0x97/0xc0 [ 44.868338][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.868568][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.868786][ C2] default_idle+0xf/0x20 [ 44.868967][ C2] default_idle_call+0x6d/0xb0 [ 44.869151][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.869413][ C2] do_idle+0xf9/0x160 [ 44.869564][ C2] cpu_startup_entry+0x54/0x60 [ 44.869748][ C2] start_secondary+0x21c/0x2b0 [ 44.869933][ C2] common_startup_64+0x12c/0x138 [ 44.870197][ C2] INITIAL USE at: [ 44.870310][ C2] __lock_acquire+0x797/0x1570 [ 44.870492][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.870713][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.870896][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 44.871141][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.871391][ C2] br_changelink+0x36c/0x1360 [bridge] [ 44.871672][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 44.871876][ C2] rtnl_newlink_create+0x341/0x850 [ 44.872052][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.872313][ C2] rtnl_newlink+0x63/0xa0 [ 44.872483][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.872649][ C2] netlink_rcv_skb+0x130/0x360 [ 44.872831][ C2] netlink_unicast+0x449/0x710 [ 44.873084][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.873256][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.873428][ C2] ___sys_sendmsg+0xee/0x170 [ 44.873693][ C2] __sys_sendmsg+0xcd/0x170 [ 44.873864][ C2] do_syscall_64+0xc6/0x1e0 [ 44.874030][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.874308][ C2] } [ 44.874380][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.874644][ C2] ... acquired at: [ 44.874747][ C2] mark_lock+0x28d/0x3e0 [ 44.874963][ C2] mark_usage+0xd9/0x2a0 [ 44.875095][ C2] __lock_acquire+0x797/0x1570 [ 44.875229][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.875363][ C2] _raw_spin_lock+0x30/0x40 [ 44.875497][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.875852][ C2] call_timer_fn+0x13b/0x230 [ 44.875989][ C2] __run_timers+0x545/0x810 [ 44.876122][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.876262][ C2] __do_softirq+0x1f8/0x5df [ 44.876469][ C2] irq_exit_rcu+0x97/0xc0 [ 44.876601][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.876766][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.877012][ C2] default_idle+0xf/0x20 [ 44.877145][ C2] default_idle_call+0x6d/0xb0 [ 44.877277][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.877409][ C2] do_idle+0xf9/0x160 [ 44.877512][ C2] cpu_startup_entry+0x54/0x60 [ 44.877645][ C2] start_secondary+0x21c/0x2b0 [ 44.877779][ C2] common_startup_64+0x12c/0x138 [ 44.877912][ C2] [ 44.877978][ C2] [ 44.877978][ C2] stack backtrace: [ 44.878214][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 44.878413][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.878709][ C2] Call Trace: [ 44.878888][ C2] [ 44.878959][ C2] dump_stack_lvl+0x82/0xd0 [ 44.879098][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.879271][ C2] ? common_startup_64+0x12c/0x138 [ 44.879404][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.879642][ C2] ? __pfx_usage_skip+0x10/0x10 [ 44.879772][ C2] ? __pfx_usage_match+0x10/0x10 [ 44.879915][ C2] ? arch_stack_walk+0x8c/0xf0 [ 44.880052][ C2] mark_lock_irq+0x4cd/0xa10 [ 44.880270][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.880405][ C2] ? stack_trace_save+0x94/0xd0 [ 44.880539][ C2] ? add_chain_cache+0x248/0x8b0 [ 44.880684][ C2] ? save_trace+0x8f/0x5b0 [ 44.880894][ C2] mark_lock+0x28d/0x3e0 [ 44.880996][ C2] mark_usage+0xd9/0x2a0 [ 44.881095][ C2] __lock_acquire+0x797/0x1570 [ 44.881233][ C2] ? __lock_acquire+0xaf0/0x1570 [ 44.881365][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.881681][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.881814][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.882016][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.882231][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 44.882362][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.882567][ C2] ? lock_acquire+0x32/0xc0 [ 44.882700][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.882986][ C2] _raw_spin_lock+0x30/0x40 [ 44.883118][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.883318][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.883528][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.883835][ C2] call_timer_fn+0x13b/0x230 [ 44.883970][ C2] ? call_timer_fn+0xe8/0x230 [ 44.884108][ C2] ? call_timer_fn+0xe8/0x230 [ 44.884316][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 44.884449][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.884585][ C2] __run_timers+0x545/0x810 [ 44.884717][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.885033][ C2] ? __pfx___run_timers+0x10/0x10 [ 44.885165][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.885300][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.885431][ C2] ? lock_acquire+0x32/0xc0 [ 44.885565][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 44.885699][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.885831][ C2] __do_softirq+0x1f8/0x5df [ 44.885965][ C2] irq_exit_rcu+0x97/0xc0 [ 44.886066][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.886348][ C2] [ 44.886420][ C2] [ 44.886489][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.886660][ C2] RIP: 0010:default_idle+0xf/0x20 [ 44.886800][ C2] 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 [ 44.887357][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 44.887605][ C2] RAX: 00000000000e8965 RBX: 1ffff9200002bfc1 RCX: ffffffffa890f9e5 [ 44.887817][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa62aa4a4 [ 44.888019][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f2709c [ 44.888297][ C2] R10: ffff88802f9384e3 R11: ffff88802f93dc80 R12: 0000000000000000 [ 44.888495][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 44.888698][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.888905][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 44.889039][ C2] default_idle_call+0x6d/0xb0 [ 44.889175][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.889307][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.889439][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.889652][ C2] do_idle+0xf9/0x160 [ 44.889753][ C2] cpu_startup_entry+0x54/0x60 [ 44.889895][ C2] start_secondary+0x21c/0x2b0 [ 44.890030][ C2] ? __pfx_start_secondary+0x10/0x10 [ 44.890240][ C2] common_startup_64+0x12c/0x138 [ 44.890376][ C2] [ 86.951057][ T509] Mirror/redirect action on [ 94.638946][ T539] br0: port 2(veth2) entered disabled state [ 94.744938][ T541] br0: port 1(veth1) entered disabled state [ 94.839427][ T542] veth2: left allmulticast mode [ 94.839597][ T542] veth2: left promiscuous mode [ 94.839860][ T542] br0: port 2(veth2) entered disabled state [ 94.840779][ T542] veth1: left allmulticast mode [ 94.840920][ T542] veth1: left promiscuous mode [ 94.841646][ T542] br0: port 1(veth1) entered disabled state