[ 28.933437][ T291] br1: port 1(veth1) entered blocking state [ 28.933827][ T291] br1: port 1(veth1) entered disabled state [ 28.934264][ T291] veth1: entered allmulticast mode [ 28.936413][ T291] veth1: entered promiscuous mode [ 29.062588][ T49] br1: port 1(veth1) entered blocking state [ 29.062957][ T49] br1: port 1(veth1) entered forwarding state [ 29.178025][ T294] br1: port 2(veth2) entered blocking state [ 29.179591][ T294] br1: port 2(veth2) entered disabled state [ 29.179870][ T294] veth2: entered allmulticast mode [ 29.181849][ T294] veth2: entered promiscuous mode [ 29.303418][ T29] br1: port 2(veth2) entered blocking state [ 29.303677][ T29] br1: port 2(veth2) entered forwarding state [ 38.682229][ T327] GACT probability NOT on [ 44.333508][ C1] [ 44.333630][ C1] ======================================================== [ 44.333833][ C1] WARNING: possible irq lock inversion dependency detected [ 44.334037][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.334174][ C1] -------------------------------------------------------- [ 44.334382][ C1] swapper/1/0 just changed the state of lock: [ 44.334553][ C1] ffff88800602ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.334900][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.335099][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.335103][ C1] [ 44.335103][ C1] [ 44.335103][ C1] and interrupts could create inverse lock ordering between them. [ 44.335103][ C1] [ 44.335618][ C1] [ 44.335618][ C1] other info that might help us debug this: [ 44.335812][ C1] Chain exists of: [ 44.335812][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.335812][ C1] [ 44.336125][ C1] Possible interrupt unsafe locking scenario: [ 44.336125][ C1] [ 44.336333][ C1] CPU0 CPU1 [ 44.336466][ C1] ---- ---- [ 44.336595][ C1] lock(&p->alloc_lock); [ 44.336699][ C1] local_irq_disable(); [ 44.336871][ C1] lock(&br->lock); [ 44.337036][ C1] lock(lweventlist_lock); [ 44.337202][ C1] [ 44.337303][ C1] lock(&br->lock); [ 44.337407][ C1] [ 44.337407][ C1] *** DEADLOCK *** [ 44.337407][ C1] [ 44.337600][ C1] 1 lock held by swapper/1/0: [ 44.337733][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.338008][ C1] [ 44.338008][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.338236][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.338382][ C1] HARDIRQ-ON-W at: [ 44.338493][ C1] __lock_acquire+0x797/0x1570 [ 44.338678][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.338848][ C1] _raw_spin_lock+0x30/0x40 [ 44.339017][ C1] set_mems_allowed+0x1d/0x210 [ 44.339188][ C1] kernel_init_freeable+0x72/0x310 [ 44.339359][ C1] kernel_init+0x20/0x200 [ 44.339530][ C1] ret_from_fork+0x31/0x70 [ 44.339702][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.339874][ C1] SOFTIRQ-ON-W at: [ 44.339975][ C1] __lock_acquire+0x797/0x1570 [ 44.340142][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.340309][ C1] _raw_spin_lock+0x30/0x40 [ 44.340475][ C1] set_mems_allowed+0x1d/0x210 [ 44.340663][ C1] kernel_init_freeable+0x72/0x310 [ 44.340836][ C1] kernel_init+0x20/0x200 [ 44.341025][ C1] ret_from_fork+0x31/0x70 [ 44.341192][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.341358][ C1] INITIAL USE at: [ 44.341461][ C1] __lock_acquire+0x797/0x1570 [ 44.341627][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.341796][ C1] _raw_spin_lock+0x30/0x40 [ 44.341965][ C1] set_mems_allowed+0x1d/0x210 [ 44.342133][ C1] kernel_init_freeable+0x72/0x310 [ 44.342302][ C1] kernel_init+0x20/0x200 [ 44.342471][ C1] ret_from_fork+0x31/0x70 [ 44.342639][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.342805][ C1] } [ 44.342874][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.343089][ C1] ... acquired at: [ 44.343191][ C1] __lock_acquire+0xaf0/0x1570 [ 44.343329][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.343464][ C1] _raw_spin_lock+0x30/0x40 [ 44.343602][ C1] __get_task_comm+0x27/0x70 [ 44.343744][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.343891][ C1] linkwatch_fire_event+0x196/0x200 [ 44.344028][ C1] veth_newlink+0x367/0x830 [veth] [ 44.344174][ C1] rtnl_newlink_create+0x341/0x850 [ 44.344310][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.344450][ C1] rtnl_newlink+0x63/0xa0 [ 44.344587][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.344720][ C1] netlink_rcv_skb+0x130/0x360 [ 44.344861][ C1] netlink_unicast+0x449/0x710 [ 44.345011][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.345145][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.345280][ C1] ___sys_sendmsg+0xee/0x170 [ 44.345414][ C1] __sys_sendmsg+0xcd/0x170 [ 44.345553][ C1] do_syscall_64+0xc6/0x1e0 [ 44.345691][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.345863][ C1] [ 44.345933][ C1] -> (lweventlist_lock){....}-{2:2} { [ 44.346070][ C1] INITIAL USE at: [ 44.346173][ C1] __lock_acquire+0x797/0x1570 [ 44.346345][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.346514][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.346689][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 44.346856][ C1] rtnl_getlink+0x4c9/0x970 [ 44.347027][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.347190][ C1] netlink_rcv_skb+0x130/0x360 [ 44.347359][ C1] netlink_unicast+0x449/0x710 [ 44.347528][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.347702][ C1] __sys_sendto+0x37d/0x410 [ 44.347870][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.348035][ C1] do_syscall_64+0xc6/0x1e0 [ 44.348202][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.348411][ C1] } [ 44.348477][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.348677][ C1] ... acquired at: [ 44.348773][ C1] __lock_acquire+0xaf0/0x1570 [ 44.348907][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.349046][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.349184][ C1] linkwatch_fire_event+0x74/0x200 [ 44.349316][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.349527][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.349732][ C1] dev_set_mac_address+0x28a/0x410 [ 44.349868][ C1] dev_set_mac_address_user+0x31/0x50 [ 44.350003][ C1] do_setlink+0x17b4/0x21e0 [ 44.350134][ C1] rtnl_setlink+0x1f7/0x310 [ 44.350269][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.350400][ C1] netlink_rcv_skb+0x130/0x360 [ 44.350544][ C1] netlink_unicast+0x449/0x710 [ 44.350678][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.350815][ C1] __sys_sendto+0x37d/0x410 [ 44.350948][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.351080][ C1] do_syscall_64+0xc6/0x1e0 [ 44.351211][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.351381][ C1] [ 44.351449][ C1] -> (&br->lock){+.-.}-{2:2} { [ 44.351685][ C1] HARDIRQ-ON-W at: [ 44.351787][ C1] __lock_acquire+0x797/0x1570 [ 44.352044][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.352215][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.352475][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.352711][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.353102][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.353304][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.353508][ C1] rtnl_newlink_create+0x341/0x850 [ 44.353755][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.353923][ C1] rtnl_newlink+0x63/0xa0 [ 44.354090][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.354255][ C1] netlink_rcv_skb+0x130/0x360 [ 44.354500][ C1] netlink_unicast+0x449/0x710 [ 44.354665][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.354829][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.355074][ C1] ___sys_sendmsg+0xee/0x170 [ 44.355242][ C1] __sys_sendmsg+0xcd/0x170 [ 44.355411][ C1] do_syscall_64+0xc6/0x1e0 [ 44.355576][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.355852][ C1] IN-SOFTIRQ-W at: [ 44.355951][ C1] __lock_acquire+0x797/0x1570 [ 44.356116][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.356359][ C1] _raw_spin_lock+0x30/0x40 [ 44.356523][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.356765][ C1] call_timer_fn+0x13b/0x230 [ 44.357018][ C1] __run_timers+0x545/0x810 [ 44.357185][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.357352][ C1] __do_softirq+0x1f8/0x5df [ 44.357517][ C1] irq_exit_rcu+0x97/0xc0 [ 44.357776][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.357975][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.358175][ C1] default_idle+0xf/0x20 [ 44.358422][ C1] default_idle_call+0x6d/0xb0 [ 44.358595][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.358765][ C1] do_idle+0xf9/0x160 [ 44.358978][ C1] cpu_startup_entry+0x54/0x60 [ 44.359145][ C1] start_secondary+0x21c/0x2b0 [ 44.359313][ C1] common_startup_64+0x12c/0x138 [ 44.359479][ C1] INITIAL USE at: [ 44.359658][ C1] __lock_acquire+0x797/0x1570 [ 44.359830][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.359998][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.360171][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.360491][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.360738][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.360945][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.361240][ C1] rtnl_newlink_create+0x341/0x850 [ 44.361410][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.361579][ C1] rtnl_newlink+0x63/0xa0 [ 44.361829][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.361997][ C1] netlink_rcv_skb+0x130/0x360 [ 44.362167][ C1] netlink_unicast+0x449/0x710 [ 44.362438][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.362604][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.362774][ C1] ___sys_sendmsg+0xee/0x170 [ 44.362938][ C1] __sys_sendmsg+0xcd/0x170 [ 44.363105][ C1] do_syscall_64+0xc6/0x1e0 [ 44.363274][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.363476][ C1] } [ 44.363549][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.363819][ C1] ... acquired at: [ 44.363918][ C1] mark_lock+0x28d/0x3e0 [ 44.364052][ C1] mark_usage+0xd9/0x2a0 [ 44.364263][ C1] __lock_acquire+0x797/0x1570 [ 44.364399][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.364535][ C1] _raw_spin_lock+0x30/0x40 [ 44.364670][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.364957][ C1] call_timer_fn+0x13b/0x230 [ 44.365091][ C1] __run_timers+0x545/0x810 [ 44.365225][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.365359][ C1] __do_softirq+0x1f8/0x5df [ 44.365490][ C1] irq_exit_rcu+0x97/0xc0 [ 44.365624][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.365787][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.366038][ C1] default_idle+0xf/0x20 [ 44.366250][ C1] default_idle_call+0x6d/0xb0 [ 44.366382][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.366515][ C1] do_idle+0xf9/0x160 [ 44.366617][ C1] cpu_startup_entry+0x54/0x60 [ 44.366754][ C1] start_secondary+0x21c/0x2b0 [ 44.366891][ C1] common_startup_64+0x12c/0x138 [ 44.367026][ C1] [ 44.367094][ C1] [ 44.367094][ C1] stack backtrace: [ 44.367351][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 44.367556][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.367936][ C1] Call Trace: [ 44.368046][ C1] [ 44.368114][ C1] dump_stack_lvl+0x82/0xd0 [ 44.368254][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.368427][ C1] ? common_startup_64+0x12c/0x138 [ 44.368646][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.368887][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.369022][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.369155][ C1] ? arch_stack_walk+0x8c/0xf0 [ 44.369294][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.369429][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.369647][ C1] ? stack_trace_save+0x94/0xd0 [ 44.369870][ C1] ? add_chain_cache+0x248/0x8b0 [ 44.370005][ C1] ? save_trace+0x8f/0x5b0 [ 44.370140][ C1] mark_lock+0x28d/0x3e0 [ 44.370242][ C1] mark_usage+0xd9/0x2a0 [ 44.370348][ C1] __lock_acquire+0x797/0x1570 [ 44.370480][ C1] ? __lock_acquire+0xaf0/0x1570 [ 44.370618][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.370941][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.371075][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.371282][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.371418][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.371640][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.371846][ C1] ? lock_acquire+0x32/0xc0 [ 44.371982][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.372192][ C1] _raw_spin_lock+0x30/0x40 [ 44.372497][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.372702][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.372905][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.373139][ C1] call_timer_fn+0x13b/0x230 [ 44.373279][ C1] ? call_timer_fn+0xe8/0x230 [ 44.373413][ C1] ? call_timer_fn+0xe8/0x230 [ 44.373546][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 44.373686][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.373820][ C1] __run_timers+0x545/0x810 [ 44.373962][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.374289][ C1] ? __pfx___run_timers+0x10/0x10 [ 44.374430][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.374564][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.374859][ C1] ? lock_acquire+0x32/0xc0 [ 44.374994][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 44.375218][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.375362][ C1] __do_softirq+0x1f8/0x5df [ 44.375490][ C1] irq_exit_rcu+0x97/0xc0 [ 44.375606][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.375750][ C1] [ 44.375902][ C1] [ 44.375971][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.376147][ C1] RIP: 0010:default_idle+0xf/0x20 [ 44.376295][ 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 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 [ 44.376870][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 44.377049][ C1] RAX: 000000000009ffbd RBX: 1ffff92000029fc1 RCX: ffffffff8f10f9e5 [ 44.377339][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8caaa4a4 [ 44.377550][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 44.377756][ C1] R10: ffff8880360b84e3 R11: ffff8880360bdc80 R12: 0000000000000000 [ 44.378148][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 44.378355][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.378490][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 44.378634][ C1] default_idle_call+0x6d/0xb0 [ 44.378766][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.378896][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.379036][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.379187][ C1] do_idle+0xf9/0x160 [ 44.379363][ C1] cpu_startup_entry+0x54/0x60 [ 44.379496][ C1] start_secondary+0x21c/0x2b0 [ 44.379636][ C1] ? __pfx_start_secondary+0x10/0x10 [ 44.379769][ C1] common_startup_64+0x12c/0x138 [ 44.379982][ C1] [ 48.509144][ T448] br1: port 2(veth2) entered disabled state [ 48.604324][ T450] veth2: left allmulticast mode [ 48.604520][ T450] veth2: left promiscuous mode [ 48.604794][ T450] br1: port 2(veth2) entered disabled state [ 48.710036][ T451] br1: port 1(veth1) entered disabled state [ 48.811346][ T452] veth1: left allmulticast mode [ 48.811535][ T452] veth1: left promiscuous mode [ 48.811789][ T452] br1: port 1(veth1) entered disabled state