[ 28.735545][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 30.341879][ T290] br0: port 1(veth1) entered blocking state [ 30.342333][ T290] br0: port 1(veth1) entered disabled state [ 30.343231][ T290] veth1: entered allmulticast mode [ 30.345354][ T290] veth1: entered promiscuous mode [ 30.490333][ T292] br0: port 2(veth2) entered blocking state [ 30.490596][ T292] br0: port 2(veth2) entered disabled state [ 30.490859][ T292] veth2: entered allmulticast mode [ 30.492715][ T292] veth2: entered promiscuous mode [ 30.738783][ T7] br0: port 1(veth1) entered blocking state [ 30.739145][ T7] br0: port 1(veth1) entered forwarding state [ 30.888884][ T70] br0: port 2(veth2) entered blocking state [ 30.889129][ T70] br0: port 2(veth2) entered forwarding state [ 45.902728][ C3] [ 45.902893][ C3] ======================================================== [ 45.903108][ C3] WARNING: possible irq lock inversion dependency detected [ 45.903318][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.903467][ C3] -------------------------------------------------------- [ 45.903673][ C3] swapper/3/0 just changed the state of lock: [ 45.903849][ C3] ffff888005dbac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.904204][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.904417][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.904421][ C3] [ 45.904421][ C3] [ 45.904421][ C3] and interrupts could create inverse lock ordering between them. [ 45.904421][ C3] [ 45.904922][ C3] [ 45.904922][ C3] other info that might help us debug this: [ 45.905124][ C3] Chain exists of: [ 45.905124][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.905124][ C3] [ 45.905444][ C3] Possible interrupt unsafe locking scenario: [ 45.905444][ C3] [ 45.905647][ C3] CPU0 CPU1 [ 45.905783][ C3] ---- ---- [ 45.905921][ C3] lock(&p->alloc_lock); [ 45.906030][ C3] local_irq_disable(); [ 45.906199][ C3] lock(&br->lock); [ 45.906375][ C3] lock(lweventlist_lock); [ 45.906547][ C3] [ 45.906657][ C3] lock(&br->lock); [ 45.906765][ C3] [ 45.906765][ C3] *** DEADLOCK *** [ 45.906765][ C3] [ 45.906992][ C3] 1 lock held by swapper/3/0: [ 45.907131][ C3] #0: ffffc90000288b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.907420][ C3] [ 45.907420][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.907663][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.907808][ C3] HARDIRQ-ON-W at: [ 45.907917][ C3] __lock_acquire+0x797/0x1570 [ 45.908096][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.908270][ C3] _raw_spin_lock+0x30/0x40 [ 45.908449][ C3] set_mems_allowed+0x1d/0x210 [ 45.908629][ C3] kernel_init_freeable+0x72/0x310 [ 45.908807][ C3] kernel_init+0x20/0x200 [ 45.908982][ C3] ret_from_fork+0x31/0x70 [ 45.909159][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.909331][ C3] SOFTIRQ-ON-W at: [ 45.909436][ C3] __lock_acquire+0x797/0x1570 [ 45.909615][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.909791][ C3] _raw_spin_lock+0x30/0x40 [ 45.909967][ C3] set_mems_allowed+0x1d/0x210 [ 45.910139][ C3] kernel_init_freeable+0x72/0x310 [ 45.910314][ C3] kernel_init+0x20/0x200 [ 45.910487][ C3] ret_from_fork+0x31/0x70 [ 45.910670][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.910845][ C3] INITIAL USE at: [ 45.910976][ C3] __lock_acquire+0x797/0x1570 [ 45.911151][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.911325][ C3] _raw_spin_lock+0x30/0x40 [ 45.911502][ C3] set_mems_allowed+0x1d/0x210 [ 45.911725][ C3] kernel_init_freeable+0x72/0x310 [ 45.911897][ C3] kernel_init+0x20/0x200 [ 45.912071][ C3] ret_from_fork+0x31/0x70 [ 45.912248][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.912419][ C3] } [ 45.912494][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.912711][ C3] ... acquired at: [ 45.912821][ C3] __lock_acquire+0xaf0/0x1570 [ 45.912969][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.913187][ C3] _raw_spin_lock+0x30/0x40 [ 45.913337][ C3] __get_task_comm+0x27/0x70 [ 45.913484][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.913627][ C3] linkwatch_fire_event+0x196/0x200 [ 45.913769][ C3] veth_newlink+0x367/0x830 [veth] [ 45.913912][ C3] rtnl_newlink_create+0x341/0x850 [ 45.914061][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.914202][ C3] rtnl_newlink+0x63/0xa0 [ 45.914347][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.914487][ C3] netlink_rcv_skb+0x130/0x360 [ 45.914641][ C3] netlink_unicast+0x449/0x710 [ 45.914779][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.914942][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.915085][ C3] ___sys_sendmsg+0xee/0x170 [ 45.915230][ C3] __sys_sendmsg+0xcd/0x170 [ 45.915383][ C3] do_syscall_64+0xc6/0x1e0 [ 45.915524][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.915704][ C3] [ 45.915780][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.915930][ C3] INITIAL USE at: [ 45.916036][ C3] __lock_acquire+0x797/0x1570 [ 45.916219][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.916398][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.916583][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.916761][ C3] rtnl_getlink+0x4c9/0x970 [ 45.916934][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.917115][ C3] netlink_rcv_skb+0x130/0x360 [ 45.917292][ C3] netlink_unicast+0x449/0x710 [ 45.917484][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.917657][ C3] __sys_sendto+0x37d/0x410 [ 45.917837][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.918011][ C3] do_syscall_64+0xc6/0x1e0 [ 45.918185][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.918394][ C3] } [ 45.918465][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.918678][ C3] ... acquired at: [ 45.918780][ C3] __lock_acquire+0xaf0/0x1570 [ 45.918942][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.919082][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.919220][ C3] linkwatch_fire_event+0x74/0x200 [ 45.919360][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.919581][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.919796][ C3] dev_set_mac_address+0x28a/0x410 [ 45.919937][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.920076][ C3] do_setlink+0x17b4/0x21e0 [ 45.920219][ C3] rtnl_setlink+0x1f7/0x310 [ 45.920357][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.920494][ C3] netlink_rcv_skb+0x130/0x360 [ 45.920631][ C3] netlink_unicast+0x449/0x710 [ 45.920772][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.920920][ C3] __sys_sendto+0x37d/0x410 [ 45.921068][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.921206][ C3] do_syscall_64+0xc6/0x1e0 [ 45.921348][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.921536][ C3] [ 45.921623][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.921788][ C3] HARDIRQ-ON-W at: [ 45.921892][ C3] __lock_acquire+0x797/0x1570 [ 45.922073][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.922252][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.922426][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.922672][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.922945][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.923159][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.923370][ C3] rtnl_newlink_create+0x341/0x850 [ 45.923551][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.923726][ C3] rtnl_newlink+0x63/0xa0 [ 45.923900][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.924074][ C3] netlink_rcv_skb+0x130/0x360 [ 45.924247][ C3] netlink_unicast+0x449/0x710 [ 45.924452][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.924724][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.924912][ C3] ___sys_sendmsg+0xee/0x170 [ 45.925163][ C3] __sys_sendmsg+0xcd/0x170 [ 45.925444][ C3] do_syscall_64+0xc6/0x1e0 [ 45.925722][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.926040][ C3] IN-SOFTIRQ-W at: [ 45.926194][ C3] __lock_acquire+0x797/0x1570 [ 45.926470][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.926721][ C3] _raw_spin_lock+0x30/0x40 [ 45.926997][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.927371][ C3] call_timer_fn+0x13b/0x230 [ 45.927634][ C3] __run_timers+0x545/0x810 [ 45.927897][ C3] timer_expire_remote+0x9b/0xe0 [ 45.928171][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.928445][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.928708][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.928974][ C3] __do_softirq+0x1f8/0x5df [ 45.929233][ C3] irq_exit_rcu+0x97/0xc0 [ 45.929492][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.929818][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.930146][ C3] default_idle+0xf/0x20 [ 45.930415][ C3] default_idle_call+0x6d/0xb0 [ 45.930683][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.930951][ C3] do_idle+0xf9/0x160 [ 45.931168][ C3] cpu_startup_entry+0x54/0x60 [ 45.931433][ C3] start_secondary+0x21c/0x2b0 [ 45.931722][ C3] common_startup_64+0x12c/0x138 [ 45.931987][ C3] INITIAL USE at: [ 45.932146][ C3] __lock_acquire+0x797/0x1570 [ 45.932412][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.932677][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.932946][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.933327][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.933703][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.934036][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.934367][ C3] rtnl_newlink_create+0x341/0x850 [ 45.934634][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.934908][ C3] rtnl_newlink+0x63/0xa0 [ 45.935161][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.935434][ C3] netlink_rcv_skb+0x130/0x360 [ 45.935712][ C3] netlink_unicast+0x449/0x710 [ 45.935991][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.936266][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.936544][ C3] ___sys_sendmsg+0xee/0x170 [ 45.936799][ C3] __sys_sendmsg+0xcd/0x170 [ 45.937084][ C3] do_syscall_64+0xc6/0x1e0 [ 45.937354][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.937680][ C3] } [ 45.937790][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.938511][ C3] ... acquired at: [ 45.938670][ C3] mark_lock+0x28d/0x3e0 [ 45.938889][ C3] mark_usage+0xd9/0x2a0 [ 45.939239][ C3] __lock_acquire+0x797/0x1570 [ 45.939450][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.939665][ C3] _raw_spin_lock+0x30/0x40 [ 45.939879][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.940356][ C3] call_timer_fn+0x13b/0x230 [ 45.940573][ C3] __run_timers+0x545/0x810 [ 45.940797][ C3] timer_expire_remote+0x9b/0xe0 [ 45.941015][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.941237][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.941590][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.941800][ C3] __do_softirq+0x1f8/0x5df [ 45.942012][ C3] irq_exit_rcu+0x97/0xc0 [ 45.942229][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.942663][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.942925][ C3] default_idle+0xf/0x20 [ 45.943144][ C3] default_idle_call+0x6d/0xb0 [ 45.943367][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.943740][ C3] do_idle+0xf9/0x160 [ 45.943893][ C3] cpu_startup_entry+0x54/0x60 [ 45.944111][ C3] start_secondary+0x21c/0x2b0 [ 45.944334][ C3] common_startup_64+0x12c/0x138 [ 45.944703][ C3] [ 45.944813][ C3] [ 45.944813][ C3] stack backtrace: [ 45.945085][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.945431][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.946070][ C3] Call Trace: [ 45.946237][ C3] [ 45.946357][ C3] dump_stack_lvl+0x82/0xd0 [ 45.946588][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.947010][ C3] ? common_startup_64+0x12c/0x138 [ 45.947233][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.947516][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.947734][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.948107][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.948335][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.948558][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.948738][ C3] ? stack_trace_save+0x94/0xd0 [ 45.948974][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.949115][ C3] ? save_trace+0x8f/0x5b0 [ 45.949256][ C3] mark_lock+0x28d/0x3e0 [ 45.949369][ C3] mark_usage+0xd9/0x2a0 [ 45.949475][ C3] __lock_acquire+0x797/0x1570 [ 45.949697][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.949837][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.950092][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.950312][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.950653][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.950892][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.951119][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.951631][ C3] ? lock_acquire+0x32/0xc0 [ 45.951859][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.952203][ C3] _raw_spin_lock+0x30/0x40 [ 45.952439][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.952940][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.953302][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.953707][ C3] call_timer_fn+0x13b/0x230 [ 45.954084][ C3] ? call_timer_fn+0xe8/0x230 [ 45.954313][ C3] ? call_timer_fn+0xe8/0x230 [ 45.954544][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.954770][ C3] ? mark_lock+0x38/0x3e0 [ 45.954949][ C3] __run_timers+0x545/0x810 [ 45.955484][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.955899][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.956125][ C3] ? __lock_release+0x103/0x460 [ 45.956354][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.956705][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.956886][ C3] ? lock_acquire+0x32/0xc0 [ 45.957097][ C3] ? timer_expire_remote+0x93/0xe0 [ 45.957319][ C3] timer_expire_remote+0x9b/0xe0 [ 45.957663][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.957880][ C3] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 45.958146][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.958359][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.958722][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.958917][ C3] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 45.959135][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.959350][ C3] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.959765][ C3] __do_softirq+0x1f8/0x5df [ 45.959996][ C3] irq_exit_rcu+0x97/0xc0 [ 45.960159][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.960383][ C3] [ 45.960498][ C3] [ 45.960755][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.961036][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.961277][ 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 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 [ 45.962242][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 45.962524][ C3] RAX: 000000000006ceeb RBX: 1ffff9200002dfc1 RCX: ffffffffaa70f9e5 [ 45.962984][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa80aa4a4 [ 45.963316][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 45.963659][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 45.964132][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.964470][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.964694][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.964918][ C3] default_idle_call+0x6d/0xb0 [ 45.965283][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.965510][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.965736][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.965958][ C3] do_idle+0xf9/0x160 [ 45.966279][ C3] cpu_startup_entry+0x54/0x60 [ 45.966496][ C3] start_secondary+0x21c/0x2b0 [ 45.966723][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.966947][ C3] common_startup_64+0x12c/0x138 [ 45.967172][ C3] [ 60.289800][ T352] GACT probability NOT on [ 91.615749][ T528] br1: port 1(veth0) entered blocking state [ 91.615999][ T528] br1: port 1(veth0) entered disabled state [ 91.616226][ T528] veth0: entered allmulticast mode [ 91.617745][ T528] veth0: entered promiscuous mode [ 91.628823][ T528] ip (528) used greatest stack depth: 23856 bytes left [ 91.728379][ T529] br1: port 1(veth0) entered blocking state [ 91.728610][ T529] br1: port 1(veth0) entered forwarding state [ 94.109411][ T534] veth0: left allmulticast mode [ 94.109576][ T534] veth0: left promiscuous mode [ 94.109824][ T534] br1: port 1(veth0) entered disabled state [ 106.906166][ T618] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 107.313336][ T624] br0: port 2(veth2) entered disabled state [ 107.408280][ T625] br0: port 1(veth1) entered disabled state [ 107.534470][ T626] veth2: left allmulticast mode [ 107.534644][ T626] veth2: left promiscuous mode [ 107.534899][ T626] br0: port 2(veth2) entered disabled state [ 107.537595][ T626] veth1: left allmulticast mode [ 107.537750][ T626] veth1: left promiscuous mode [ 107.537990][ T626] br0: port 1(veth1) entered disabled state