[ 29.351326][ T286] br0: port 1(veth1) entered blocking state [ 29.351732][ T286] br0: port 1(veth1) entered disabled state [ 29.352054][ T286] veth1: entered allmulticast mode [ 29.353981][ T286] veth1: entered promiscuous mode [ 29.490034][ T288] br0: port 2(veth2) entered blocking state [ 29.490350][ T288] br0: port 2(veth2) entered disabled state [ 29.490608][ T288] veth2: entered allmulticast mode [ 29.492444][ T288] veth2: entered promiscuous mode [ 29.731302][ T49] br0: port 1(veth1) entered blocking state [ 29.731706][ T49] br0: port 1(veth1) entered forwarding state [ 29.847200][ T51] br0: port 2(veth2) entered blocking state [ 29.847479][ T51] br0: port 2(veth2) entered forwarding state [ 41.749905][ T314] GACT probability NOT on [ 44.879596][ C0] [ 44.879797][ C0] ======================================================== [ 44.880063][ C0] WARNING: possible irq lock inversion dependency detected [ 44.880313][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 44.880480][ C0] -------------------------------------------------------- [ 44.880726][ C0] swapper/0/0 just changed the state of lock: [ 44.880926][ C0] ffff888008c1ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.881337][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.881582][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 44.881586][ C0] [ 44.881586][ C0] [ 44.881586][ C0] and interrupts could create inverse lock ordering between them. [ 44.881586][ C0] [ 44.882176][ C0] [ 44.882176][ C0] other info that might help us debug this: [ 44.882424][ C0] Chain exists of: [ 44.882424][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.882424][ C0] [ 44.882799][ C0] Possible interrupt unsafe locking scenario: [ 44.882799][ C0] [ 44.883040][ C0] CPU0 CPU1 [ 44.883203][ C0] ---- ---- [ 44.883364][ C0] lock(&p->alloc_lock); [ 44.883486][ C0] local_irq_disable(); [ 44.883688][ C0] lock(&br->lock); [ 44.883891][ C0] lock(lweventlist_lock); [ 44.884093][ C0] [ 44.884214][ C0] lock(&br->lock); [ 44.884337][ C0] [ 44.884337][ C0] *** DEADLOCK *** [ 44.884337][ C0] [ 44.884579][ C0] 1 lock held by swapper/0/0: [ 44.884743][ C0] #0: ffffc90000007b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.885083][ C0] [ 44.885083][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 44.885360][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.885541][ C0] HARDIRQ-ON-W at: [ 44.885668][ C0] __lock_acquire+0x797/0x1570 [ 44.885880][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.886086][ C0] _raw_spin_lock+0x30/0x40 [ 44.886289][ C0] set_mems_allowed+0x1d/0x210 [ 44.886515][ C0] kernel_init_freeable+0x72/0x310 [ 44.886728][ C0] kernel_init+0x20/0x200 [ 44.886933][ C0] ret_from_fork+0x31/0x70 [ 44.887138][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.887347][ C0] SOFTIRQ-ON-W at: [ 44.887470][ C0] __lock_acquire+0x797/0x1570 [ 44.887677][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.887883][ C0] _raw_spin_lock+0x30/0x40 [ 44.888089][ C0] set_mems_allowed+0x1d/0x210 [ 44.888292][ C0] kernel_init_freeable+0x72/0x310 [ 44.888503][ C0] kernel_init+0x20/0x200 [ 44.888709][ C0] ret_from_fork+0x31/0x70 [ 44.888909][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.889110][ C0] INITIAL USE at: [ 44.889232][ C0] __lock_acquire+0x797/0x1570 [ 44.889442][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.889646][ C0] _raw_spin_lock+0x30/0x40 [ 44.889860][ C0] set_mems_allowed+0x1d/0x210 [ 44.890069][ C0] kernel_init_freeable+0x72/0x310 [ 44.890272][ C0] kernel_init+0x20/0x200 [ 44.890476][ C0] ret_from_fork+0x31/0x70 [ 44.890689][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.890893][ C0] } [ 44.890978][ C0] ... key at: [] __key.387+0x0/0x40 [ 44.891235][ C0] ... acquired at: [ 44.891359][ C0] __lock_acquire+0xaf0/0x1570 [ 44.891530][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.891691][ C0] _raw_spin_lock+0x30/0x40 [ 44.891857][ C0] __get_task_comm+0x27/0x70 [ 44.892027][ C0] ref_tracker_alloc+0x2ee/0x490 [ 44.892196][ C0] linkwatch_fire_event+0x196/0x200 [ 44.892371][ C0] veth_newlink+0x367/0x830 [veth] [ 44.892553][ C0] rtnl_newlink_create+0x341/0x850 [ 44.892717][ C0] __rtnl_newlink+0xac9/0xd80 [ 44.892885][ C0] rtnl_newlink+0x63/0xa0 [ 44.893047][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.893211][ C0] netlink_rcv_skb+0x130/0x360 [ 44.893384][ C0] netlink_unicast+0x449/0x710 [ 44.893545][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.893709][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 44.893885][ C0] ___sys_sendmsg+0xee/0x170 [ 44.894049][ C0] __sys_sendmsg+0xcd/0x170 [ 44.894215][ C0] do_syscall_64+0xc6/0x1e0 [ 44.894386][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.894590][ C0] [ 44.894673][ C0] -> (lweventlist_lock){....}-{2:2} { [ 44.894840][ C0] INITIAL USE at: [ 44.894961][ C0] __lock_acquire+0x797/0x1570 [ 44.895177][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.895389][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.895599][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 44.895804][ C0] rtnl_getlink+0x4c9/0x970 [ 44.896008][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.896211][ C0] netlink_rcv_skb+0x130/0x360 [ 44.896425][ C0] netlink_unicast+0x449/0x710 [ 44.896640][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.896843][ C0] __sys_sendto+0x37d/0x410 [ 44.897046][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.897258][ C0] do_syscall_64+0xc6/0x1e0 [ 44.897463][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.897713][ C0] } [ 44.897797][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.898043][ C0] ... acquired at: [ 44.898163][ C0] __lock_acquire+0xaf0/0x1570 [ 44.898327][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.898489][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.898657][ C0] linkwatch_fire_event+0x74/0x200 [ 44.898826][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.899071][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.899310][ C0] dev_set_mac_address+0x28a/0x410 [ 44.899473][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.899634][ C0] do_setlink+0x17b4/0x21e0 [ 44.899796][ C0] rtnl_setlink+0x1f7/0x310 [ 44.899959][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.900125][ C0] netlink_rcv_skb+0x130/0x360 [ 44.900293][ C0] netlink_unicast+0x449/0x710 [ 44.900457][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.900620][ C0] __sys_sendto+0x37d/0x410 [ 44.900786][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.900947][ C0] do_syscall_64+0xc6/0x1e0 [ 44.901111][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.901311][ C0] [ 44.901395][ C0] -> (&br->lock){+.-.}-{2:2} { [ 44.901565][ C0] HARDIRQ-ON-W at: [ 44.901696][ C0] __lock_acquire+0x797/0x1570 [ 44.901901][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.902108][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.902306][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.902565][ C0] dev_set_mac_address+0x28a/0x410 [ 44.902765][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.902964][ C0] do_setlink+0x17b4/0x21e0 [ 44.903156][ C0] rtnl_setlink+0x1f7/0x310 [ 44.903344][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.903532][ C0] netlink_rcv_skb+0x130/0x360 [ 44.903722][ C0] netlink_unicast+0x449/0x710 [ 44.903913][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.904109][ C0] __sys_sendto+0x37d/0x410 [ 44.904316][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.904509][ C0] do_syscall_64+0xc6/0x1e0 [ 44.904696][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.904934][ C0] IN-SOFTIRQ-W at: [ 44.905050][ C0] __lock_acquire+0x797/0x1570 [ 44.905245][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.905438][ C0] _raw_spin_lock+0x30/0x40 [ 44.905636][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.905920][ C0] call_timer_fn+0x13b/0x230 [ 44.906121][ C0] __run_timers+0x545/0x810 [ 44.906319][ C0] timer_expire_remote+0x9b/0xe0 [ 44.906539][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.906745][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.906959][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.907169][ C0] __do_softirq+0x1f8/0x5df [ 44.907372][ C0] irq_exit_rcu+0x97/0xc0 [ 44.907584][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.907831][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.908076][ C0] default_idle+0xf/0x20 [ 44.908297][ C0] default_idle_call+0x6d/0xb0 [ 44.908489][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.908693][ C0] do_idle+0xf9/0x160 [ 44.908860][ C0] cpu_startup_entry+0x54/0x60 [ 44.909069][ C0] rest_init+0x14f/0x260 [ 44.909277][ C0] start_kernel+0x318/0x3d0 [ 44.909483][ C0] x86_64_start_reservations+0x18/0x30 [ 44.909703][ C0] x86_64_start_kernel+0xba/0x110 [ 44.909907][ C0] common_startup_64+0x12c/0x138 [ 44.910110][ C0] INITIAL USE at: [ 44.910233][ C0] __lock_acquire+0x797/0x1570 [ 44.910439][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.910638][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.910844][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.911124][ C0] dev_set_mac_address+0x28a/0x410 [ 44.911427][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.911636][ C0] do_setlink+0x17b4/0x21e0 [ 44.911839][ C0] rtnl_setlink+0x1f7/0x310 [ 44.912147][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.912353][ C0] netlink_rcv_skb+0x130/0x360 [ 44.912565][ C0] netlink_unicast+0x449/0x710 [ 44.912960][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.913177][ C0] __sys_sendto+0x37d/0x410 [ 44.913380][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.913585][ C0] do_syscall_64+0xc6/0x1e0 [ 44.913886][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.914136][ C0] } [ 44.914222][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.914632][ C0] ... acquired at: [ 44.914753][ C0] mark_lock+0x28d/0x3e0 [ 44.914917][ C0] mark_usage+0xd9/0x2a0 [ 44.915080][ C0] __lock_acquire+0x797/0x1570 [ 44.915251][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.915521][ C0] _raw_spin_lock+0x30/0x40 [ 44.915693][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.915934][ C0] call_timer_fn+0x13b/0x230 [ 44.916103][ C0] __run_timers+0x545/0x810 [ 44.916369][ C0] timer_expire_remote+0x9b/0xe0 [ 44.916544][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.916706][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.916868][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.917138][ C0] __do_softirq+0x1f8/0x5df [ 44.917306][ C0] irq_exit_rcu+0x97/0xc0 [ 44.917470][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.917674][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.917975][ C0] default_idle+0xf/0x20 [ 44.918140][ C0] default_idle_call+0x6d/0xb0 [ 44.918303][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.918469][ C0] do_idle+0xf9/0x160 [ 44.918688][ C0] cpu_startup_entry+0x54/0x60 [ 44.918852][ C0] rest_init+0x14f/0x260 [ 44.919013][ C0] start_kernel+0x318/0x3d0 [ 44.919177][ C0] x86_64_start_reservations+0x18/0x30 [ 44.919435][ C0] x86_64_start_kernel+0xba/0x110 [ 44.919601][ C0] common_startup_64+0x12c/0x138 [ 44.919765][ C0] [ 44.919847][ C0] [ 44.919847][ C0] stack backtrace: [ 44.920060][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 44.920310][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.920668][ C0] Call Trace: [ 44.920795][ C0] [ 44.920976][ C0] dump_stack_lvl+0x82/0xd0 [ 44.921146][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.921348][ C0] ? common_startup_64+0x12c/0x138 [ 44.921518][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.921821][ C0] ? __pfx_usage_skip+0x10/0x10 [ 44.921985][ C0] ? __pfx_usage_match+0x10/0x10 [ 44.922150][ C0] ? arch_stack_walk+0x8c/0xf0 [ 44.922315][ C0] mark_lock_irq+0x4cd/0xa10 [ 44.922573][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.922738][ C0] ? stack_trace_save+0x94/0xd0 [ 44.922904][ C0] ? add_chain_cache+0x248/0x8b0 [ 44.923067][ C0] ? save_trace+0x8f/0x5b0 [ 44.923328][ C0] mark_lock+0x28d/0x3e0 [ 44.923453][ C0] mark_usage+0xd9/0x2a0 [ 44.923576][ C0] __lock_acquire+0x797/0x1570 [ 44.923741][ C0] ? __lock_acquire+0xaf0/0x1570 [ 44.923904][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.924278][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.924441][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.924680][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.924849][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 44.925111][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.925364][ C0] ? lock_acquire+0x32/0xc0 [ 44.925526][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.925965][ C0] _raw_spin_lock+0x30/0x40 [ 44.926129][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.926372][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.926641][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.927024][ C0] call_timer_fn+0x13b/0x230 [ 44.927191][ C0] ? call_timer_fn+0xe8/0x230 [ 44.927355][ C0] ? call_timer_fn+0xe8/0x230 [ 44.927521][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 44.927779][ C0] ? mark_lock+0x38/0x3e0 [ 44.927909][ C0] __run_timers+0x545/0x810 [ 44.928073][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.928351][ C0] ? __pfx___run_timers+0x10/0x10 [ 44.928615][ C0] ? __lock_release+0x103/0x460 [ 44.928781][ C0] ? do_raw_spin_lock+0x131/0x270 [ 44.928945][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.929112][ C0] ? lock_acquire+0x32/0xc0 [ 44.929371][ C0] ? timer_expire_remote+0x93/0xe0 [ 44.929567][ C0] timer_expire_remote+0x9b/0xe0 [ 44.929740][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.929927][ C0] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.930240][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.930418][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.930595][ C0] ? do_raw_spin_lock+0x131/0x270 [ 44.930778][ C0] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.931063][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.931242][ C0] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.931460][ C0] __do_softirq+0x1f8/0x5df [ 44.931643][ C0] irq_exit_rcu+0x97/0xc0 [ 44.931768][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.932046][ C0] [ 44.932130][ C0] [ 44.932224][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.932442][ C0] RIP: 0010:default_idle+0xf/0x20 [ 44.932636][ C0] 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 [ 44.933367][ C0] RSP: 0018:ffffffff90e07e00 EFLAGS: 00000246 [ 44.933704][ C0] RAX: 000000000009d0c9 RBX: 1ffffffff21c0fc2 RCX: ffffffff8ff0e9d5 [ 44.933959][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d8aa4a4 [ 44.934234][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f0709c [ 44.934602][ C0] R10: ffff88802f8384e3 R11: ffff88802f82d9b0 R12: 0000000000000000 [ 44.934853][ C0] R13: ffffffff90e1d000 R14: dffffc0000000000 R15: 0000000000014770 [ 44.935153][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.935344][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 44.935514][ C0] default_idle_call+0x6d/0xb0 [ 44.935703][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.935881][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.936155][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.936335][ C0] do_idle+0xf9/0x160 [ 44.936484][ C0] cpu_startup_entry+0x54/0x60 [ 44.936695][ C0] rest_init+0x14f/0x260 [ 44.936828][ C0] start_kernel+0x318/0x3d0 [ 44.937098][ C0] x86_64_start_reservations+0x18/0x30 [ 44.937285][ C0] x86_64_start_kernel+0xba/0x110 [ 44.937486][ C0] common_startup_64+0x12c/0x138 [ 44.937657][ C0] [ 216.594796][ T1504] br0: port 2(veth2) entered disabled state [ 216.693632][ T1505] br0: port 1(veth1) entered disabled state [ 216.791094][ T1506] veth2: left allmulticast mode [ 216.791259][ T1506] veth2: left promiscuous mode [ 216.791515][ T1506] br0: port 2(veth2) entered disabled state [ 216.792443][ T1506] veth1: left allmulticast mode [ 216.792583][ T1506] veth1: left promiscuous mode [ 216.792810][ T1506] br0: port 1(veth1) entered disabled state