[ 26.176130][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 28.739616][ T300] br0: port 1(veth1) entered blocking state [ 28.739987][ T300] br0: port 1(veth1) entered disabled state [ 28.741155][ T300] veth1: entered allmulticast mode [ 28.743079][ T300] veth1: entered promiscuous mode [ 28.845282][ T302] br0: port 2(veth2) entered blocking state [ 28.845511][ T302] br0: port 2(veth2) entered disabled state [ 28.845749][ T302] veth2: entered allmulticast mode [ 28.847570][ T302] veth2: entered promiscuous mode [ 29.082514][ T50] br0: port 1(veth1) entered blocking state [ 29.082945][ T50] br0: port 1(veth1) entered forwarding state [ 29.187592][ T51] br0: port 2(veth2) entered blocking state [ 29.187866][ T51] br0: port 2(veth2) entered forwarding state [ 44.332399][ C3] [ 44.332602][ C3] ======================================================== [ 44.332815][ C3] WARNING: possible irq lock inversion dependency detected [ 44.333018][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 44.333163][ C3] -------------------------------------------------------- [ 44.333357][ C3] swapper/3/0 just changed the state of lock: [ 44.333523][ C3] ffff888006e2ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.333880][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.334079][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 44.334083][ C3] [ 44.334083][ C3] [ 44.334083][ C3] and interrupts could create inverse lock ordering between them. [ 44.334083][ C3] [ 44.334569][ C3] [ 44.334569][ C3] other info that might help us debug this: [ 44.334761][ C3] Chain exists of: [ 44.334761][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.334761][ C3] [ 44.335062][ C3] Possible interrupt unsafe locking scenario: [ 44.335062][ C3] [ 44.335264][ C3] CPU0 CPU1 [ 44.335397][ C3] ---- ---- [ 44.335528][ C3] lock(&p->alloc_lock); [ 44.335630][ C3] local_irq_disable(); [ 44.335792][ C3] lock(&br->lock); [ 44.335958][ C3] lock(lweventlist_lock); [ 44.336130][ C3] [ 44.336232][ C3] lock(&br->lock); [ 44.336336][ C3] [ 44.336336][ C3] *** DEADLOCK *** [ 44.336336][ C3] [ 44.336531][ C3] 1 lock held by swapper/3/0: [ 44.336665][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.336949][ C3] [ 44.336949][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 44.337179][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.337323][ C3] HARDIRQ-ON-W at: [ 44.337426][ C3] __lock_acquire+0x797/0x1570 [ 44.337600][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.337771][ C3] _raw_spin_lock+0x30/0x40 [ 44.337940][ C3] set_mems_allowed+0x1d/0x210 [ 44.338109][ C3] kernel_init_freeable+0x72/0x310 [ 44.338286][ C3] kernel_init+0x20/0x200 [ 44.338454][ C3] ret_from_fork+0x31/0x70 [ 44.338622][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.338790][ C3] SOFTIRQ-ON-W at: [ 44.338891][ C3] __lock_acquire+0x797/0x1570 [ 44.339059][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.339228][ C3] _raw_spin_lock+0x30/0x40 [ 44.339399][ C3] set_mems_allowed+0x1d/0x210 [ 44.339565][ C3] kernel_init_freeable+0x72/0x310 [ 44.339731][ C3] kernel_init+0x20/0x200 [ 44.339910][ C3] ret_from_fork+0x31/0x70 [ 44.340080][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.340252][ C3] INITIAL USE at: [ 44.340354][ C3] __lock_acquire+0x797/0x1570 [ 44.340521][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.340691][ C3] _raw_spin_lock+0x30/0x40 [ 44.340857][ C3] set_mems_allowed+0x1d/0x210 [ 44.341024][ C3] kernel_init_freeable+0x72/0x310 [ 44.341199][ C3] kernel_init+0x20/0x200 [ 44.341367][ C3] ret_from_fork+0x31/0x70 [ 44.341543][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.341711][ C3] } [ 44.341780][ C3] ... key at: [] __key.387+0x0/0x40 [ 44.341983][ C3] ... acquired at: [ 44.342084][ C3] __lock_acquire+0xaf0/0x1570 [ 44.342221][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.342361][ C3] _raw_spin_lock+0x30/0x40 [ 44.342496][ C3] __get_task_comm+0x27/0x70 [ 44.342630][ C3] ref_tracker_alloc+0x2ee/0x490 [ 44.342764][ C3] linkwatch_fire_event+0x196/0x200 [ 44.342900][ C3] veth_newlink+0x367/0x830 [veth] [ 44.343042][ C3] rtnl_newlink_create+0x341/0x850 [ 44.343175][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.343308][ C3] rtnl_newlink+0x63/0xa0 [ 44.343445][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.343578][ C3] netlink_rcv_skb+0x130/0x360 [ 44.343713][ C3] netlink_unicast+0x449/0x710 [ 44.343845][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.343977][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.344112][ C3] ___sys_sendmsg+0xee/0x170 [ 44.344246][ C3] __sys_sendmsg+0xcd/0x170 [ 44.344380][ C3] do_syscall_64+0xc6/0x1e0 [ 44.344516][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.344688][ C3] [ 44.344757][ C3] -> (lweventlist_lock){....}-{2:2} { [ 44.344896][ C3] INITIAL USE at: [ 44.345004][ C3] __lock_acquire+0x797/0x1570 [ 44.345175][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.345342][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.345508][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 44.345679][ C3] rtnl_getlink+0x4c9/0x970 [ 44.345851][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.346016][ C3] netlink_rcv_skb+0x130/0x360 [ 44.346181][ C3] netlink_unicast+0x449/0x710 [ 44.346351][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.346523][ C3] __sys_sendto+0x37d/0x410 [ 44.346692][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.346886][ C3] do_syscall_64+0xc6/0x1e0 [ 44.347057][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.347258][ C3] } [ 44.347326][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.347527][ C3] ... acquired at: [ 44.347630][ C3] __lock_acquire+0xaf0/0x1570 [ 44.347764][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.347898][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.348040][ C3] linkwatch_fire_event+0x74/0x200 [ 44.348175][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.348385][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.348583][ C3] dev_set_mac_address+0x28a/0x410 [ 44.348725][ C3] dev_set_mac_address_user+0x31/0x50 [ 44.348858][ C3] do_setlink+0x17b4/0x21e0 [ 44.348990][ C3] rtnl_setlink+0x1f7/0x310 [ 44.349123][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.349261][ C3] netlink_rcv_skb+0x130/0x360 [ 44.349396][ C3] netlink_unicast+0x449/0x710 [ 44.349538][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.349674][ C3] __sys_sendto+0x37d/0x410 [ 44.349810][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.349949][ C3] do_syscall_64+0xc6/0x1e0 [ 44.350082][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.350249][ C3] [ 44.350316][ C3] -> (&br->lock){+.-.}-{2:2} { [ 44.350464][ C3] HARDIRQ-ON-W at: [ 44.350565][ C3] __lock_acquire+0x797/0x1570 [ 44.350740][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.350909][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.351083][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 44.351326][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.351566][ C3] br_changelink+0x36c/0x1360 [bridge] [ 44.351779][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 44.351983][ C3] rtnl_newlink_create+0x341/0x850 [ 44.352151][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.352321][ C3] rtnl_newlink+0x63/0xa0 [ 44.352492][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.352660][ C3] netlink_rcv_skb+0x130/0x360 [ 44.352827][ C3] netlink_unicast+0x449/0x710 [ 44.352996][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.353163][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.353332][ C3] ___sys_sendmsg+0xee/0x170 [ 44.353510][ C3] __sys_sendmsg+0xcd/0x170 [ 44.353678][ C3] do_syscall_64+0xc6/0x1e0 [ 44.353849][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.354049][ C3] IN-SOFTIRQ-W at: [ 44.354152][ C3] __lock_acquire+0x797/0x1570 [ 44.354322][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.354492][ C3] _raw_spin_lock+0x30/0x40 [ 44.354666][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.354910][ C3] call_timer_fn+0x13b/0x230 [ 44.355079][ C3] __run_timers+0x545/0x810 [ 44.355247][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.355415][ C3] __do_softirq+0x1f8/0x5df [ 44.355581][ C3] irq_exit_rcu+0x97/0xc0 [ 44.355758][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.355962][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.356160][ C3] default_idle+0xf/0x20 [ 44.356327][ C3] default_idle_call+0x6d/0xb0 [ 44.356495][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.356668][ C3] do_idle+0xf9/0x160 [ 44.356828][ C3] cpu_startup_entry+0x54/0x60 [ 44.356994][ C3] start_secondary+0x21c/0x2b0 [ 44.357165][ C3] common_startup_64+0x12c/0x138 [ 44.357339][ C3] INITIAL USE at: [ 44.357441][ C3] __lock_acquire+0x797/0x1570 [ 44.357615][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.357789][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.357970][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 44.358213][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.358479][ C3] br_changelink+0x36c/0x1360 [bridge] [ 44.358684][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 44.358887][ C3] rtnl_newlink_create+0x341/0x850 [ 44.359060][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.359229][ C3] rtnl_newlink+0x63/0xa0 [ 44.359395][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.359567][ C3] netlink_rcv_skb+0x130/0x360 [ 44.359745][ C3] netlink_unicast+0x449/0x710 [ 44.359926][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.360104][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.360293][ C3] ___sys_sendmsg+0xee/0x170 [ 44.360478][ C3] __sys_sendmsg+0xcd/0x170 [ 44.360658][ C3] do_syscall_64+0xc6/0x1e0 [ 44.360926][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.361144][ C3] } [ 44.361219][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.361504][ C3] ... acquired at: [ 44.361692][ C3] mark_lock+0x28d/0x3e0 [ 44.361839][ C3] mark_usage+0xd9/0x2a0 [ 44.361984][ C3] __lock_acquire+0x797/0x1570 [ 44.362131][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.362357][ C3] _raw_spin_lock+0x30/0x40 [ 44.362503][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.362724][ C3] call_timer_fn+0x13b/0x230 [ 44.362882][ C3] __run_timers+0x545/0x810 [ 44.363107][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.363251][ C3] __do_softirq+0x1f8/0x5df [ 44.363401][ C3] irq_exit_rcu+0x97/0xc0 [ 44.363547][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.363805][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.363985][ C3] default_idle+0xf/0x20 [ 44.364129][ C3] default_idle_call+0x6d/0xb0 [ 44.364274][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.364495][ C3] do_idle+0xf9/0x160 [ 44.364608][ C3] cpu_startup_entry+0x54/0x60 [ 44.364752][ C3] start_secondary+0x21c/0x2b0 [ 44.364898][ C3] common_startup_64+0x12c/0x138 [ 44.365044][ C3] [ 44.365192][ C3] [ 44.365192][ C3] stack backtrace: [ 44.365373][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 44.365593][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.365994][ C3] Call Trace: [ 44.366094][ C3] [ 44.366168][ C3] dump_stack_lvl+0x82/0xd0 [ 44.366312][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.366559][ C3] ? common_startup_64+0x12c/0x138 [ 44.366693][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.366869][ C3] ? __pfx_usage_skip+0x10/0x10 [ 44.367002][ C3] ? __pfx_usage_match+0x10/0x10 [ 44.367213][ C3] ? arch_stack_walk+0x8c/0xf0 [ 44.367348][ C3] mark_lock_irq+0x4cd/0xa10 [ 44.367488][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.367621][ C3] ? stack_trace_save+0x94/0xd0 [ 44.367832][ C3] ? add_chain_cache+0x248/0x8b0 [ 44.367966][ C3] ? save_trace+0x8f/0x5b0 [ 44.368100][ C3] mark_lock+0x28d/0x3e0 [ 44.368202][ C3] mark_usage+0xd9/0x2a0 [ 44.368303][ C3] __lock_acquire+0x797/0x1570 [ 44.368521][ C3] ? __lock_acquire+0xaf0/0x1570 [ 44.368654][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.368891][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.369024][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.369304][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.369447][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 44.369585][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.369790][ C3] ? lock_acquire+0x32/0xc0 [ 44.370003][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370204][ C3] _raw_spin_lock+0x30/0x40 [ 44.370338][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370620][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.370824][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.371060][ C3] call_timer_fn+0x13b/0x230 [ 44.371192][ C3] ? call_timer_fn+0xe8/0x230 [ 44.371410][ C3] ? call_timer_fn+0xe8/0x230 [ 44.371544][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 44.371681][ C3] ? mark_lock+0x38/0x3e0 [ 44.371785][ C3] __run_timers+0x545/0x810 [ 44.371921][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.372162][ C3] ? __pfx___run_timers+0x10/0x10 [ 44.372299][ C3] ? do_raw_spin_lock+0x131/0x270 [ 44.372433][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.372640][ C3] ? lock_acquire+0x32/0xc0 [ 44.372773][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 44.372906][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.373038][ C3] __do_softirq+0x1f8/0x5df [ 44.373246][ C3] irq_exit_rcu+0x97/0xc0 [ 44.373347][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.373482][ C3] [ 44.373553][ C3] [ 44.373620][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.373785][ C3] RIP: 0010:default_idle+0xf/0x20 [ 44.374083][ 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 [ 44.374644][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 44.374814][ C3] RAX: 000000000009326b RBX: 1ffff9200002dfc1 RCX: ffffffffae10e9d5 [ 44.375017][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffabaaa4a4 [ 44.375296][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 44.375501][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 44.375701][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 44.375909][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.376043][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 44.376177][ C3] default_idle_call+0x6d/0xb0 [ 44.376310][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.376522][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.376656][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.376799][ C3] do_idle+0xf9/0x160 [ 44.376901][ C3] cpu_startup_entry+0x54/0x60 [ 44.377037][ C3] start_secondary+0x21c/0x2b0 [ 44.377247][ C3] ? __pfx_start_secondary+0x10/0x10 [ 44.377382][ C3] common_startup_64+0x12c/0x138 [ 44.377520][ C3] [ 60.276822][ T378] br0: port 2(veth2) entered disabled state [ 60.372126][ T379] br0: port 1(veth1) entered disabled state [ 60.464334][ T380] veth2: left allmulticast mode [ 60.464511][ T380] veth2: left promiscuous mode [ 60.464761][ T380] br0: port 2(veth2) entered disabled state [ 60.465670][ T380] veth1: left allmulticast mode [ 60.465812][ T380] veth1: left promiscuous mode [ 60.466048][ T380] br0: port 1(veth1) entered disabled state