[ 28.300595][ T286] br0: port 1(veth1) entered blocking state [ 28.301648][ T286] br0: port 1(veth1) entered disabled state [ 28.301998][ T286] veth1: entered allmulticast mode [ 28.303910][ T286] veth1: entered promiscuous mode [ 28.431219][ T288] br0: port 2(veth2) entered blocking state [ 28.431688][ T288] br0: port 2(veth2) entered disabled state [ 28.432256][ T288] veth2: entered allmulticast mode [ 28.434083][ T288] veth2: entered promiscuous mode [ 28.667988][ T51] br0: port 1(veth1) entered blocking state [ 28.668309][ T51] br0: port 1(veth1) entered forwarding state [ 39.280183][ T51] br0: port 2(veth2) entered blocking state [ 39.280428][ T51] br0: port 2(veth2) entered forwarding state [ 43.882883][ C3] [ 43.883140][ C3] ======================================================== [ 43.883512][ C3] WARNING: possible irq lock inversion dependency detected [ 43.883870][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 43.884119][ C3] -------------------------------------------------------- [ 43.884488][ C3] swapper/3/0 just changed the state of lock: [ 43.884792][ C3] ffff88800656ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.885413][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.885778][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 43.885785][ C3] [ 43.885785][ C3] [ 43.885785][ C3] and interrupts could create inverse lock ordering between them. [ 43.885785][ C3] [ 43.886716][ C3] [ 43.886716][ C3] other info that might help us debug this: [ 43.887087][ C3] Chain exists of: [ 43.887087][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.887087][ C3] [ 43.887661][ C3] Possible interrupt unsafe locking scenario: [ 43.887661][ C3] [ 43.888051][ C3] CPU0 CPU1 [ 43.888311][ C3] ---- ---- [ 43.888564][ C3] lock(&p->alloc_lock); [ 43.888765][ C3] local_irq_disable(); [ 43.889083][ C3] lock(&br->lock); [ 43.889407][ C3] lock(lweventlist_lock); [ 43.889727][ C3] [ 43.889925][ C3] lock(&br->lock); [ 43.890119][ C3] [ 43.890119][ C3] *** DEADLOCK *** [ 43.890119][ C3] [ 43.890509][ C3] 1 lock held by swapper/3/0: [ 43.890775][ C3] #0: ffffc90000288b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.891315][ C3] [ 43.891315][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 43.891784][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.892052][ C3] HARDIRQ-ON-W at: [ 43.892253][ C3] __lock_acquire+0x797/0x1570 [ 43.892585][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.892914][ C3] _raw_spin_lock+0x30/0x40 [ 43.893240][ C3] set_mems_allowed+0x1d/0x210 [ 43.893569][ C3] kernel_init_freeable+0x72/0x310 [ 43.893896][ C3] kernel_init+0x20/0x200 [ 43.894231][ C3] ret_from_fork+0x31/0x70 [ 43.894548][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.894862][ C3] SOFTIRQ-ON-W at: [ 43.895053][ C3] __lock_acquire+0x797/0x1570 [ 43.895369][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.895678][ C3] _raw_spin_lock+0x30/0x40 [ 43.896000][ C3] set_mems_allowed+0x1d/0x210 [ 43.896314][ C3] kernel_init_freeable+0x72/0x310 [ 43.896632][ C3] kernel_init+0x20/0x200 [ 43.896949][ C3] ret_from_fork+0x31/0x70 [ 43.897268][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.897585][ C3] INITIAL USE at: [ 43.897770][ C3] __lock_acquire+0x797/0x1570 [ 43.898094][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.898412][ C3] _raw_spin_lock+0x30/0x40 [ 43.898729][ C3] set_mems_allowed+0x1d/0x210 [ 43.899050][ C3] kernel_init_freeable+0x72/0x310 [ 43.899369][ C3] kernel_init+0x20/0x200 [ 43.899692][ C3] ret_from_fork+0x31/0x70 [ 43.900015][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.900329][ C3] } [ 43.900456][ C3] ... key at: [] __key.387+0x0/0x40 [ 43.900821][ C3] ... acquired at: [ 43.901005][ C3] __lock_acquire+0xaf0/0x1570 [ 43.901260][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.901514][ C3] _raw_spin_lock+0x30/0x40 [ 43.901768][ C3] __get_task_comm+0x27/0x70 [ 43.902016][ C3] ref_tracker_alloc+0x2ee/0x490 [ 43.902269][ C3] linkwatch_fire_event+0x196/0x200 [ 43.902525][ C3] veth_newlink+0x367/0x830 [veth] [ 43.902795][ C3] rtnl_newlink_create+0x341/0x850 [ 43.903044][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.903292][ C3] rtnl_newlink+0x63/0xa0 [ 43.903545][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.903795][ C3] netlink_rcv_skb+0x130/0x360 [ 43.904044][ C3] netlink_unicast+0x449/0x710 [ 43.904295][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.904537][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.904776][ C3] ___sys_sendmsg+0xee/0x170 [ 43.905016][ C3] __sys_sendmsg+0xcd/0x170 [ 43.905255][ C3] do_syscall_64+0xc6/0x1e0 [ 43.905496][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.905793][ C3] [ 43.905923][ C3] -> (lweventlist_lock){....}-{2:2} { [ 43.906178][ C3] INITIAL USE at: [ 43.906366][ C3] __lock_acquire+0x797/0x1570 [ 43.906689][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.906991][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.907288][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 43.907597][ C3] rtnl_getlink+0x4c9/0x970 [ 43.907902][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.908202][ C3] netlink_rcv_skb+0x130/0x360 [ 43.908502][ C3] netlink_unicast+0x449/0x710 [ 43.908800][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.909101][ C3] __sys_sendto+0x37d/0x410 [ 43.909405][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.909714][ C3] do_syscall_64+0xc6/0x1e0 [ 43.910021][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.910395][ C3] } [ 43.910525][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.910902][ C3] ... acquired at: [ 43.911088][ C3] __lock_acquire+0xaf0/0x1570 [ 43.911334][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.911586][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.911828][ C3] linkwatch_fire_event+0x74/0x200 [ 43.912068][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.912436][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.912799][ C3] dev_set_mac_address+0x28a/0x410 [ 43.913042][ C3] dev_set_mac_address_user+0x31/0x50 [ 43.913282][ C3] do_setlink+0x17b4/0x21e0 [ 43.913531][ C3] rtnl_setlink+0x1f7/0x310 [ 43.913773][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.914012][ C3] netlink_rcv_skb+0x130/0x360 [ 43.914254][ C3] netlink_unicast+0x449/0x710 [ 43.914505][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.914746][ C3] __sys_sendto+0x37d/0x410 [ 43.914991][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.915240][ C3] do_syscall_64+0xc6/0x1e0 [ 43.915486][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.915800][ C3] [ 43.915923][ C3] -> (&br->lock){+.-.}-{2:2} { [ 43.916183][ C3] HARDIRQ-ON-W at: [ 43.916374][ C3] __lock_acquire+0x797/0x1570 [ 43.916687][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.916998][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.917315][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 43.917762][ C3] dev_set_mac_address+0x28a/0x410 [ 43.918077][ C3] dev_set_mac_address_user+0x31/0x50 [ 43.918387][ C3] do_setlink+0x17b4/0x21e0 [ 43.918704][ C3] rtnl_setlink+0x1f7/0x310 [ 43.919010][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.919317][ C3] netlink_rcv_skb+0x130/0x360 [ 43.919629][ C3] netlink_unicast+0x449/0x710 [ 43.919944][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.920255][ C3] __sys_sendto+0x37d/0x410 [ 43.920566][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.920881][ C3] do_syscall_64+0xc6/0x1e0 [ 43.921190][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.921570][ C3] IN-SOFTIRQ-W at: [ 43.921765][ C3] __lock_acquire+0x797/0x1570 [ 43.922082][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.922390][ C3] _raw_spin_lock+0x30/0x40 [ 43.922706][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.923144][ C3] call_timer_fn+0x13b/0x230 [ 43.923449][ C3] __run_timers+0x545/0x810 [ 43.923752][ C3] timer_expire_remote+0x9b/0xe0 [ 43.924063][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 43.924374][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.924676][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 43.924982][ C3] __do_softirq+0x1f8/0x5df [ 43.925286][ C3] irq_exit_rcu+0x97/0xc0 [ 43.925594][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.925971][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.926337][ C3] default_idle+0xf/0x20 [ 43.926652][ C3] default_idle_call+0x6d/0xb0 [ 43.926962][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.927272][ C3] do_idle+0xf9/0x160 [ 43.927518][ C3] cpu_startup_entry+0x54/0x60 [ 43.927835][ C3] start_secondary+0x21c/0x2b0 [ 43.928144][ C3] common_startup_64+0x12c/0x138 [ 43.928451][ C3] INITIAL USE at: [ 43.928634][ C3] __lock_acquire+0x797/0x1570 [ 43.928931][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.929219][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.929520][ C3] br_set_mac_address+0xd2/0x260 [bridge] [ 43.929931][ C3] dev_set_mac_address+0x28a/0x410 [ 43.930235][ C3] dev_set_mac_address_user+0x31/0x50 [ 43.930539][ C3] do_setlink+0x17b4/0x21e0 [ 43.930846][ C3] rtnl_setlink+0x1f7/0x310 [ 43.931151][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.931475][ C3] netlink_rcv_skb+0x130/0x360 [ 43.931789][ C3] netlink_unicast+0x449/0x710 [ 43.932096][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.932397][ C3] __sys_sendto+0x37d/0x410 [ 43.932693][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.932996][ C3] do_syscall_64+0xc6/0x1e0 [ 43.933297][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.933672][ C3] } [ 43.933798][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.934416][ C3] ... acquired at: [ 43.934590][ C3] mark_lock+0x28d/0x3e0 [ 43.934833][ C3] mark_usage+0xd9/0x2a0 [ 43.935070][ C3] __lock_acquire+0x797/0x1570 [ 43.935445][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.935684][ C3] _raw_spin_lock+0x30/0x40 [ 43.935924][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.936306][ C3] call_timer_fn+0x13b/0x230 [ 43.936707][ C3] __run_timers+0x545/0x810 [ 43.936947][ C3] timer_expire_remote+0x9b/0xe0 [ 43.937184][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 43.937419][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.937654][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 43.938180][ C3] __do_softirq+0x1f8/0x5df [ 43.938427][ C3] irq_exit_rcu+0x97/0xc0 [ 43.938669][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.938966][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.939407][ C3] default_idle+0xf/0x20 [ 43.939656][ C3] default_idle_call+0x6d/0xb0 [ 43.939903][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.940151][ C3] do_idle+0xf9/0x160 [ 43.940496][ C3] cpu_startup_entry+0x54/0x60 [ 43.940754][ C3] start_secondary+0x21c/0x2b0 [ 43.941005][ C3] common_startup_64+0x12c/0x138 [ 43.941249][ C3] [ 43.941374][ C3] [ 43.941374][ C3] stack backtrace: [ 43.941769][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 43.942023][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.942486][ C3] Call Trace: [ 43.942618][ C3] [ 43.942705][ C3] dump_stack_lvl+0x82/0xd0 [ 43.942879][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.943093][ C3] ? common_startup_64+0x12c/0x138 [ 43.943349][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.943555][ C3] ? __pfx_usage_skip+0x10/0x10 [ 43.943722][ C3] ? __pfx_usage_match+0x10/0x10 [ 43.943892][ C3] ? arch_stack_walk+0x8c/0xf0 [ 43.944152][ C3] mark_lock_irq+0x4cd/0xa10 [ 43.944322][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.944491][ C3] ? stack_trace_save+0x94/0xd0 [ 43.944659][ C3] ? add_chain_cache+0x248/0x8b0 [ 43.944907][ C3] ? save_trace+0x8f/0x5b0 [ 43.945077][ C3] mark_lock+0x28d/0x3e0 [ 43.945202][ C3] mark_usage+0xd9/0x2a0 [ 43.945328][ C3] __lock_acquire+0x797/0x1570 [ 43.945496][ C3] ? __lock_acquire+0xaf0/0x1570 [ 43.945744][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.946033][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.946199][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.946527][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.946698][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 43.946864][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.947105][ C3] ? lock_acquire+0x32/0xc0 [ 43.947355][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.947598][ C3] _raw_spin_lock+0x30/0x40 [ 43.947765][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.948009][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.948336][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.948621][ C3] call_timer_fn+0x13b/0x230 [ 43.948785][ C3] ? call_timer_fn+0xe8/0x230 [ 43.949031][ C3] ? call_timer_fn+0xe8/0x230 [ 43.949209][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 43.949374][ C3] ? mark_lock+0x38/0x3e0 [ 43.949502][ C3] __run_timers+0x545/0x810 [ 43.949673][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.950048][ C3] ? __pfx___run_timers+0x10/0x10 [ 43.950213][ C3] ? __lock_release+0x103/0x460 [ 43.950380][ C3] ? do_raw_spin_lock+0x131/0x270 [ 43.950550][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.950796][ C3] ? lock_acquire+0x32/0xc0 [ 43.950966][ C3] ? timer_expire_remote+0x93/0xe0 [ 43.951135][ C3] timer_expire_remote+0x9b/0xe0 [ 43.951302][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 43.951559][ C3] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.951771][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.951937][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 43.952106][ C3] ? do_raw_spin_lock+0x131/0x270 [ 43.952432][ C3] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.952593][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.952758][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 43.952965][ C3] __do_softirq+0x1f8/0x5df [ 43.953213][ C3] irq_exit_rcu+0x97/0xc0 [ 43.953340][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.953507][ C3] [ 43.953592][ C3] [ 43.953675][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.953962][ C3] RIP: 0010:default_idle+0xf/0x20 [ 43.954130][ 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 [ 43.954797][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 43.955012][ C3] RAX: 00000000000646e3 RBX: 1ffff9200002dfc1 RCX: ffffffff9b30e9d5 [ 43.955255][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff98caa4a4 [ 43.955582][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 43.955831][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 43.956078][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 43.956412][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.956576][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 43.956741][ C3] default_idle_call+0x6d/0xb0 [ 43.956904][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.957150][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.957315][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.957482][ C3] do_idle+0xf9/0x160 [ 43.957612][ C3] cpu_startup_entry+0x54/0x60 [ 43.957857][ C3] start_secondary+0x21c/0x2b0 [ 43.958038][ C3] ? __pfx_start_secondary+0x10/0x10 [ 43.958206][ C3] common_startup_64+0x12c/0x138 [ 43.958373][ C3] [ 45.052500][ T305] GACT probability NOT on [ 46.841829][ T312] br0: port 2(veth2) entered disabled state [ 47.132138][ T49] br0: port 2(veth2) entered blocking state [ 47.132354][ T49] br0: port 2(veth2) entered forwarding state [ 54.138569][ T329] br0: port 1(veth1) entered disabled state [ 54.229360][ T330] br0: port 2(veth2) entered disabled state [ 54.326156][ T332] veth2: left allmulticast mode [ 54.326380][ T332] veth2: left promiscuous mode [ 54.326655][ T332] br0: port 2(veth2) entered disabled state [ 54.327637][ T332] veth1: left allmulticast mode [ 54.327795][ T332] veth1: left promiscuous mode [ 54.328049][ T332] br0: port 1(veth1) entered disabled state