[ 28.312179][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 30.777851][ T296] br0: port 1(veth1) entered blocking state [ 30.778330][ T296] br0: port 1(veth1) entered disabled state [ 30.778738][ T296] veth1: entered allmulticast mode [ 30.780897][ T296] veth1: entered promiscuous mode [ 30.881814][ T298] br0: port 2(veth2) entered blocking state [ 30.882190][ T298] br0: port 2(veth2) entered disabled state [ 30.882487][ T298] veth2: entered allmulticast mode [ 30.884465][ T298] veth2: entered promiscuous mode [ 31.325281][ T50] br0: port 1(veth1) entered blocking state [ 31.326191][ T50] br0: port 1(veth1) entered forwarding state [ 31.444001][ T49] br0: port 2(veth2) entered blocking state [ 31.444262][ T49] br0: port 2(veth2) entered forwarding state [ 46.381626][ C3] [ 46.381736][ C3] ======================================================== [ 46.381955][ C3] WARNING: possible irq lock inversion dependency detected [ 46.382163][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 46.382304][ C3] -------------------------------------------------------- [ 46.382500][ C3] swapper/3/0 just changed the state of lock: [ 46.382671][ C3] ffff888006542c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.383045][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.383254][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 46.383258][ C3] [ 46.383258][ C3] [ 46.383258][ C3] and interrupts could create inverse lock ordering between them. [ 46.383258][ C3] [ 46.383758][ C3] [ 46.383758][ C3] other info that might help us debug this: [ 46.383975][ C3] Chain exists of: [ 46.383975][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.383975][ C3] [ 46.384291][ C3] Possible interrupt unsafe locking scenario: [ 46.384291][ C3] [ 46.384488][ C3] CPU0 CPU1 [ 46.384626][ C3] ---- ---- [ 46.384765][ C3] lock(&p->alloc_lock); [ 46.384881][ C3] local_irq_disable(); [ 46.385054][ C3] lock(&br->lock); [ 46.385233][ C3] lock(lweventlist_lock); [ 46.385402][ C3] [ 46.385507][ C3] lock(&br->lock); [ 46.385613][ C3] [ 46.385613][ C3] *** DEADLOCK *** [ 46.385613][ C3] [ 46.385818][ C3] 1 lock held by swapper/3/0: [ 46.385964][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.386257][ C3] [ 46.386257][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 46.386502][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.386654][ C3] HARDIRQ-ON-W at: [ 46.386764][ C3] __lock_acquire+0x797/0x1570 [ 46.386947][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.387129][ C3] _raw_spin_lock+0x30/0x40 [ 46.387316][ C3] set_mems_allowed+0x1d/0x210 [ 46.387495][ C3] kernel_init_freeable+0x72/0x310 [ 46.387678][ C3] kernel_init+0x20/0x200 [ 46.387859][ C3] ret_from_fork+0x31/0x70 [ 46.388042][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.388221][ C3] SOFTIRQ-ON-W at: [ 46.388327][ C3] __lock_acquire+0x797/0x1570 [ 46.388503][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.388688][ C3] _raw_spin_lock+0x30/0x40 [ 46.388884][ C3] set_mems_allowed+0x1d/0x210 [ 46.389084][ C3] kernel_init_freeable+0x72/0x310 [ 46.389265][ C3] kernel_init+0x20/0x200 [ 46.389432][ C3] ret_from_fork+0x31/0x70 [ 46.389603][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.389776][ C3] INITIAL USE at: [ 46.389881][ C3] __lock_acquire+0x797/0x1570 [ 46.390060][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.390236][ C3] _raw_spin_lock+0x30/0x40 [ 46.390406][ C3] set_mems_allowed+0x1d/0x210 [ 46.390576][ C3] kernel_init_freeable+0x72/0x310 [ 46.390748][ C3] kernel_init+0x20/0x200 [ 46.390922][ C3] ret_from_fork+0x31/0x70 [ 46.391099][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.391272][ C3] } [ 46.391343][ C3] ... key at: [] __key.387+0x0/0x40 [ 46.391544][ C3] ... acquired at: [ 46.391649][ C3] __lock_acquire+0xaf0/0x1570 [ 46.391788][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.391926][ C3] _raw_spin_lock+0x30/0x40 [ 46.392064][ C3] __get_task_comm+0x27/0x70 [ 46.392215][ C3] ref_tracker_alloc+0x2ee/0x490 [ 46.392348][ C3] linkwatch_fire_event+0x196/0x200 [ 46.392561][ C3] veth_newlink+0x367/0x830 [veth] [ 46.392791][ C3] rtnl_newlink_create+0x341/0x850 [ 46.392933][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.393067][ C3] rtnl_newlink+0x63/0xa0 [ 46.393208][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.393347][ C3] netlink_rcv_skb+0x130/0x360 [ 46.393576][ C3] netlink_unicast+0x449/0x710 [ 46.393713][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.393853][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.393992][ C3] ___sys_sendmsg+0xee/0x170 [ 46.394130][ C3] __sys_sendmsg+0xcd/0x170 [ 46.394346][ C3] do_syscall_64+0xc6/0x1e0 [ 46.394489][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.394661][ C3] [ 46.394730][ C3] -> (lweventlist_lock){....}-{2:2} { [ 46.394876][ C3] INITIAL USE at: [ 46.394985][ C3] __lock_acquire+0x797/0x1570 [ 46.395248][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.395428][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.395612][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 46.395778][ C3] rtnl_getlink+0x4c9/0x970 [ 46.396109][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.396278][ C3] netlink_rcv_skb+0x130/0x360 [ 46.396455][ C3] netlink_unicast+0x449/0x710 [ 46.396628][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.396890][ C3] __sys_sendto+0x37d/0x410 [ 46.397072][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.397241][ C3] do_syscall_64+0xc6/0x1e0 [ 46.397415][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.397701][ C3] } [ 46.397780][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.398068][ C3] ... acquired at: [ 46.398172][ C3] __lock_acquire+0xaf0/0x1570 [ 46.398308][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.398531][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.398674][ C3] linkwatch_fire_event+0x74/0x200 [ 46.398897][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.399143][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.399351][ C3] dev_set_mac_address+0x28a/0x410 [ 46.399579][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.399720][ C3] do_setlink+0x17b4/0x21e0 [ 46.399860][ C3] rtnl_setlink+0x1f7/0x310 [ 46.399999][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.400140][ C3] netlink_rcv_skb+0x130/0x360 [ 46.400283][ C3] netlink_unicast+0x449/0x710 [ 46.400425][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.400567][ C3] __sys_sendto+0x37d/0x410 [ 46.400717][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.400862][ C3] do_syscall_64+0xc6/0x1e0 [ 46.401003][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.401187][ C3] [ 46.401263][ C3] -> (&br->lock){+.-.}-{2:2} { [ 46.401409][ C3] HARDIRQ-ON-W at: [ 46.401511][ C3] __lock_acquire+0x797/0x1570 [ 46.401692][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.401868][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.402138][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.402392][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.402636][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.402917][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.403120][ C3] rtnl_newlink_create+0x341/0x850 [ 46.403285][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.403460][ C3] rtnl_newlink+0x63/0xa0 [ 46.403802][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.403975][ C3] netlink_rcv_skb+0x130/0x360 [ 46.404145][ C3] netlink_unicast+0x449/0x710 [ 46.404330][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.404506][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.404685][ C3] ___sys_sendmsg+0xee/0x170 [ 46.404857][ C3] __sys_sendmsg+0xcd/0x170 [ 46.405119][ C3] do_syscall_64+0xc6/0x1e0 [ 46.405302][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.405512][ C3] IN-SOFTIRQ-W at: [ 46.405619][ C3] __lock_acquire+0x797/0x1570 [ 46.405880][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.406049][ C3] _raw_spin_lock+0x30/0x40 [ 46.406220][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.406468][ C3] call_timer_fn+0x13b/0x230 [ 46.406732][ C3] __run_timers+0x545/0x810 [ 46.406910][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.407080][ C3] __do_softirq+0x1f8/0x5df [ 46.407257][ C3] irq_exit_rcu+0x97/0xc0 [ 46.407522][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.407810][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.408016][ C3] default_idle+0xf/0x20 [ 46.408192][ C3] default_idle_call+0x6d/0xb0 [ 46.408441][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.408616][ C3] do_idle+0xf9/0x160 [ 46.408748][ C3] cpu_startup_entry+0x54/0x60 [ 46.408921][ C3] start_secondary+0x21c/0x2b0 [ 46.409260][ C3] common_startup_64+0x12c/0x138 [ 46.409434][ C3] INITIAL USE at: [ 46.409537][ C3] __lock_acquire+0x797/0x1570 [ 46.409712][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.409963][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.410131][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.410375][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.410704][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.410912][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.411204][ C3] rtnl_newlink_create+0x341/0x850 [ 46.411456][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.411632][ C3] rtnl_newlink+0x63/0xa0 [ 46.411810][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.412053][ C3] netlink_rcv_skb+0x130/0x360 [ 46.412312][ C3] netlink_unicast+0x449/0x710 [ 46.412481][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.412654][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.412903][ C3] ___sys_sendmsg+0xee/0x170 [ 46.413081][ C3] __sys_sendmsg+0xcd/0x170 [ 46.413250][ C3] do_syscall_64+0xc6/0x1e0 [ 46.413425][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.413628][ C3] } [ 46.413699][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.414051][ C3] ... acquired at: [ 46.414150][ C3] mark_lock+0x28d/0x3e0 [ 46.414291][ C3] mark_usage+0xd9/0x2a0 [ 46.414428][ C3] __lock_acquire+0x797/0x1570 [ 46.414564][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.414853][ C3] _raw_spin_lock+0x30/0x40 [ 46.414989][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.415195][ C3] call_timer_fn+0x13b/0x230 [ 46.415331][ C3] __run_timers+0x545/0x810 [ 46.415547][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.415694][ C3] __do_softirq+0x1f8/0x5df [ 46.415833][ C3] irq_exit_rcu+0x97/0xc0 [ 46.415970][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.416214][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.416459][ C3] default_idle+0xf/0x20 [ 46.416591][ C3] default_idle_call+0x6d/0xb0 [ 46.416724][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.416859][ C3] do_idle+0xf9/0x160 [ 46.416960][ C3] cpu_startup_entry+0x54/0x60 [ 46.417097][ C3] start_secondary+0x21c/0x2b0 [ 46.417240][ C3] common_startup_64+0x12c/0x138 [ 46.417451][ C3] [ 46.417522][ C3] [ 46.417522][ C3] stack backtrace: [ 46.417686][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 46.417886][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.418253][ C3] Call Trace: [ 46.418354][ C3] [ 46.418423][ C3] dump_stack_lvl+0x82/0xd0 [ 46.418560][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.418812][ C3] ? common_startup_64+0x12c/0x138 [ 46.418949][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.419132][ C3] ? __pfx_usage_skip+0x10/0x10 [ 46.419265][ C3] ? __pfx_usage_match+0x10/0x10 [ 46.419479][ C3] ? arch_stack_walk+0x8c/0xf0 [ 46.419612][ C3] mark_lock_irq+0x4cd/0xa10 [ 46.419749][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.419883][ C3] ? stack_trace_save+0x94/0xd0 [ 46.420093][ C3] ? add_chain_cache+0x248/0x8b0 [ 46.420227][ C3] ? save_trace+0x8f/0x5b0 [ 46.420363][ C3] mark_lock+0x28d/0x3e0 [ 46.420466][ C3] mark_usage+0xd9/0x2a0 [ 46.420567][ C3] __lock_acquire+0x797/0x1570 [ 46.420782][ C3] ? __lock_acquire+0xaf0/0x1570 [ 46.420915][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.421152][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.421285][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.421561][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.421695][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 46.421845][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.422122][ C3] ? lock_acquire+0x32/0xc0 [ 46.422256][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.422458][ C3] _raw_spin_lock+0x30/0x40 [ 46.422593][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.422873][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.423095][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.423328][ C3] call_timer_fn+0x13b/0x230 [ 46.423462][ C3] ? call_timer_fn+0xe8/0x230 [ 46.423677][ C3] ? call_timer_fn+0xe8/0x230 [ 46.423812][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 46.423953][ C3] ? mark_lock+0x38/0x3e0 [ 46.424062][ C3] __run_timers+0x545/0x810 [ 46.424197][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.424438][ C3] ? __pfx___run_timers+0x10/0x10 [ 46.424574][ C3] ? do_raw_spin_lock+0x131/0x270 [ 46.424709][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.424843][ C3] ? lock_acquire+0x32/0xc0 [ 46.424974][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 46.425109][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.425252][ C3] __do_softirq+0x1f8/0x5df [ 46.425465][ C3] irq_exit_rcu+0x97/0xc0 [ 46.425573][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.425707][ C3] [ 46.425860][ C3] [ 46.425932][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.426184][ C3] RIP: 0010:default_idle+0xf/0x20 [ 46.426329][ 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 [ 46.426899][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 46.427070][ C3] RAX: 0000000000089943 RBX: 1ffff9200002dfc1 RCX: ffffffffb430e9d5 [ 46.427276][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb1caa4a4 [ 46.427565][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 46.427770][ C3] R10: ffff8880361b84e3 R11: ffff8880361bdc80 R12: 0000000000000000 [ 46.427979][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 46.428265][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.428402][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 46.428537][ C3] default_idle_call+0x6d/0xb0 [ 46.428670][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.428888][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.429080][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.429223][ C3] do_idle+0xf9/0x160 [ 46.429333][ C3] cpu_startup_entry+0x54/0x60 [ 46.429476][ C3] start_secondary+0x21c/0x2b0 [ 46.429696][ C3] ? __pfx_start_secondary+0x10/0x10 [ 46.429832][ C3] common_startup_64+0x12c/0x138 [ 46.429971][ C3] [ 88.949297][ T509] Mirror/redirect action on [ 96.752639][ T539] br0: port 2(veth2) entered disabled state [ 96.880748][ T541] br0: port 1(veth1) entered disabled state [ 97.001796][ T542] veth2: left allmulticast mode [ 97.002064][ T542] veth2: left promiscuous mode [ 97.002450][ T542] br0: port 2(veth2) entered disabled state [ 97.004972][ T542] veth1: left allmulticast mode [ 97.005209][ T542] veth1: left promiscuous mode [ 97.005598][ T542] br0: port 1(veth1) entered disabled state