[ 29.645612][ T284] br0: port 1(veth1) entered blocking state [ 29.646016][ T284] br0: port 1(veth1) entered disabled state [ 29.646327][ T284] veth1: entered allmulticast mode [ 29.648272][ T284] veth1: entered promiscuous mode [ 29.752003][ T286] br0: port 2(veth2) entered blocking state [ 29.752252][ T286] br0: port 2(veth2) entered disabled state [ 29.753759][ T286] veth2: entered allmulticast mode [ 29.755691][ T286] veth2: entered promiscuous mode [ 29.998089][ T7] br0: port 1(veth1) entered blocking state [ 29.998541][ T7] br0: port 1(veth1) entered forwarding state [ 30.116613][ T49] br0: port 2(veth2) entered blocking state [ 30.116844][ T49] br0: port 2(veth2) entered forwarding state [ 39.137965][ T316] veth0: entered promiscuous mode [ 39.714360][ T323] GACT probability NOT on [ 45.369489][ C1] [ 45.369685][ C1] ======================================================== [ 45.369939][ C1] WARNING: possible irq lock inversion dependency detected [ 45.370184][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 45.370349][ C1] -------------------------------------------------------- [ 45.370602][ C1] swapper/1/0 just changed the state of lock: [ 45.370806][ C1] ffff888005972c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.371214][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.371466][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 45.371471][ C1] [ 45.371471][ C1] [ 45.371471][ C1] and interrupts could create inverse lock ordering between them. [ 45.371471][ C1] [ 45.372065][ C1] [ 45.372065][ C1] other info that might help us debug this: [ 45.372306][ C1] Chain exists of: [ 45.372306][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.372306][ C1] [ 45.372683][ C1] Possible interrupt unsafe locking scenario: [ 45.372683][ C1] [ 45.372934][ C1] CPU0 CPU1 [ 45.373100][ C1] ---- ---- [ 45.373262][ C1] lock(&p->alloc_lock); [ 45.373386][ C1] local_irq_disable(); [ 45.373592][ C1] lock(&br->lock); [ 45.373805][ C1] lock(lweventlist_lock); [ 45.374009][ C1] [ 45.374131][ C1] lock(&br->lock); [ 45.374257][ C1] [ 45.374257][ C1] *** DEADLOCK *** [ 45.374257][ C1] [ 45.374499][ C1] 1 lock held by swapper/1/0: [ 45.374664][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.375006][ C1] [ 45.375006][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 45.375300][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.375471][ C1] HARDIRQ-ON-W at: [ 45.375598][ C1] __lock_acquire+0x797/0x1570 [ 45.375812][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.376019][ C1] _raw_spin_lock+0x30/0x40 [ 45.376234][ C1] set_mems_allowed+0x1d/0x210 [ 45.376440][ C1] kernel_init_freeable+0x72/0x310 [ 45.376651][ C1] kernel_init+0x20/0x200 [ 45.376859][ C1] ret_from_fork+0x31/0x70 [ 45.377066][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.377272][ C1] SOFTIRQ-ON-W at: [ 45.377396][ C1] __lock_acquire+0x797/0x1570 [ 45.377606][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.377813][ C1] _raw_spin_lock+0x30/0x40 [ 45.378020][ C1] set_mems_allowed+0x1d/0x210 [ 45.378225][ C1] kernel_init_freeable+0x72/0x310 [ 45.378430][ C1] kernel_init+0x20/0x200 [ 45.378641][ C1] ret_from_fork+0x31/0x70 [ 45.378846][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.379049][ C1] INITIAL USE at: [ 45.379174][ C1] __lock_acquire+0x797/0x1570 [ 45.379381][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.379589][ C1] _raw_spin_lock+0x30/0x40 [ 45.379796][ C1] set_mems_allowed+0x1d/0x210 [ 45.380006][ C1] kernel_init_freeable+0x72/0x310 [ 45.380214][ C1] kernel_init+0x20/0x200 [ 45.380419][ C1] ret_from_fork+0x31/0x70 [ 45.380644][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.380857][ C1] } [ 45.380945][ C1] ... key at: [] __key.387+0x0/0x40 [ 45.381201][ C1] ... acquired at: [ 45.381326][ C1] __lock_acquire+0xaf0/0x1570 [ 45.381497][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.381663][ C1] _raw_spin_lock+0x30/0x40 [ 45.381828][ C1] __get_task_comm+0x27/0x70 [ 45.381992][ C1] ref_tracker_alloc+0x2ee/0x490 [ 45.382157][ C1] linkwatch_fire_event+0x196/0x200 [ 45.382325][ C1] veth_newlink+0x367/0x830 [veth] [ 45.382508][ C1] rtnl_newlink_create+0x341/0x850 [ 45.382672][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.382840][ C1] rtnl_newlink+0x63/0xa0 [ 45.383006][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.383169][ C1] netlink_rcv_skb+0x130/0x360 [ 45.383335][ C1] netlink_unicast+0x449/0x710 [ 45.383499][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.383665][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.383830][ C1] ___sys_sendmsg+0xee/0x170 [ 45.384003][ C1] __sys_sendmsg+0xcd/0x170 [ 45.384170][ C1] do_syscall_64+0xc6/0x1e0 [ 45.384337][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.384544][ C1] [ 45.384629][ C1] -> (lweventlist_lock){....}-{2:2} { [ 45.384797][ C1] INITIAL USE at: [ 45.384921][ C1] __lock_acquire+0x797/0x1570 [ 45.385129][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.385343][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.385550][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 45.385756][ C1] rtnl_getlink+0x4c9/0x970 [ 45.385961][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.386166][ C1] netlink_rcv_skb+0x130/0x360 [ 45.386369][ C1] netlink_unicast+0x449/0x710 [ 45.386584][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.386786][ C1] __sys_sendto+0x37d/0x410 [ 45.386992][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.387198][ C1] do_syscall_64+0xc6/0x1e0 [ 45.387403][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.387667][ C1] } [ 45.387779][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.387996][ C1] ... acquired at: [ 45.388105][ C1] __lock_acquire+0xaf0/0x1570 [ 45.388250][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.388394][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.388540][ C1] linkwatch_fire_event+0x74/0x200 [ 45.388684][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.388913][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.389138][ C1] dev_set_mac_address+0x28a/0x410 [ 45.389280][ C1] dev_set_mac_address_user+0x31/0x50 [ 45.389423][ C1] do_setlink+0x17b4/0x21e0 [ 45.389569][ C1] rtnl_setlink+0x1f7/0x310 [ 45.389717][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.389871][ C1] netlink_rcv_skb+0x130/0x360 [ 45.390017][ C1] netlink_unicast+0x449/0x710 [ 45.390162][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.390301][ C1] __sys_sendto+0x37d/0x410 [ 45.390449][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.390634][ C1] do_syscall_64+0xc6/0x1e0 [ 45.390801][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.391003][ C1] [ 45.391086][ C1] -> (&br->lock){+.-.}-{2:2} { [ 45.391256][ C1] HARDIRQ-ON-W at: [ 45.391381][ C1] __lock_acquire+0x797/0x1570 [ 45.391593][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.391802][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.392009][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 45.392294][ C1] br_changelink+0x231/0x1360 [bridge] [ 45.392536][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 45.392779][ C1] rtnl_newlink_create+0x341/0x850 [ 45.392987][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.393193][ C1] rtnl_newlink+0x63/0xa0 [ 45.393398][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.393602][ C1] netlink_rcv_skb+0x130/0x360 [ 45.393804][ C1] netlink_unicast+0x449/0x710 [ 45.394009][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.394215][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.394422][ C1] ___sys_sendmsg+0xee/0x170 [ 45.394627][ C1] __sys_sendmsg+0xcd/0x170 [ 45.394835][ C1] do_syscall_64+0xc6/0x1e0 [ 45.395041][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.395284][ C1] IN-SOFTIRQ-W at: [ 45.395406][ C1] __lock_acquire+0x797/0x1570 [ 45.395616][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.395827][ C1] _raw_spin_lock+0x30/0x40 [ 45.396036][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.396321][ C1] call_timer_fn+0x13b/0x230 [ 45.396529][ C1] __run_timers+0x545/0x810 [ 45.396737][ C1] timer_expire_remote+0x9b/0xe0 [ 45.396944][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 45.397156][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.397363][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 45.397566][ C1] __do_softirq+0x1f8/0x5df [ 45.397773][ C1] irq_exit_rcu+0x97/0xc0 [ 45.397983][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.398230][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.398482][ C1] default_idle+0xf/0x20 [ 45.398688][ C1] default_idle_call+0x6d/0xb0 [ 45.398892][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.399097][ C1] do_idle+0xf9/0x160 [ 45.399264][ C1] cpu_startup_entry+0x54/0x60 [ 45.399470][ C1] start_secondary+0x21c/0x2b0 [ 45.399680][ C1] common_startup_64+0x12c/0x138 [ 45.399888][ C1] INITIAL USE at: [ 45.400013][ C1] __lock_acquire+0x797/0x1570 [ 45.400219][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.400423][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.400653][ C1] br_set_ageing_time+0x2d/0xf0 [bridge] [ 45.400936][ C1] br_changelink+0x231/0x1360 [bridge] [ 45.401182][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 45.401426][ C1] rtnl_newlink_create+0x341/0x850 [ 45.401629][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.401840][ C1] rtnl_newlink+0x63/0xa0 [ 45.402046][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.402250][ C1] netlink_rcv_skb+0x130/0x360 [ 45.402461][ C1] netlink_unicast+0x449/0x710 [ 45.402665][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.402879][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.403088][ C1] ___sys_sendmsg+0xee/0x170 [ 45.403297][ C1] __sys_sendmsg+0xcd/0x170 [ 45.403508][ C1] do_syscall_64+0xc6/0x1e0 [ 45.403714][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.403969][ C1] } [ 45.404052][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.404456][ C1] ... acquired at: [ 45.404579][ C1] mark_lock+0x28d/0x3e0 [ 45.404745][ C1] mark_usage+0xd9/0x2a0 [ 45.404910][ C1] __lock_acquire+0x797/0x1570 [ 45.405165][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.405330][ C1] _raw_spin_lock+0x30/0x40 [ 45.405501][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.405740][ C1] call_timer_fn+0x13b/0x230 [ 45.405984][ C1] __run_timers+0x545/0x810 [ 45.406148][ C1] timer_expire_remote+0x9b/0xe0 [ 45.406312][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 45.406478][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.406799][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 45.406970][ C1] __do_softirq+0x1f8/0x5df [ 45.407135][ C1] irq_exit_rcu+0x97/0xc0 [ 45.407301][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.407584][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.407788][ C1] default_idle+0xf/0x20 [ 45.407950][ C1] default_idle_call+0x6d/0xb0 [ 45.408113][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.408356][ C1] do_idle+0xf9/0x160 [ 45.408485][ C1] cpu_startup_entry+0x54/0x60 [ 45.408649][ C1] start_secondary+0x21c/0x2b0 [ 45.408813][ C1] common_startup_64+0x12c/0x138 [ 45.408977][ C1] [ 45.409139][ C1] [ 45.409139][ C1] stack backtrace: [ 45.409344][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 45.409588][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.410033][ C1] Call Trace: [ 45.410157][ C1] [ 45.410245][ C1] dump_stack_lvl+0x82/0xd0 [ 45.410416][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.410754][ C1] ? common_startup_64+0x12c/0x138 [ 45.410893][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.411074][ C1] ? __pfx_usage_skip+0x10/0x10 [ 45.411211][ C1] ? __pfx_usage_match+0x10/0x10 [ 45.411438][ C1] ? arch_stack_walk+0x8c/0xf0 [ 45.411579][ C1] mark_lock_irq+0x4cd/0xa10 [ 45.411720][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.411859][ C1] ? stack_trace_save+0x94/0xd0 [ 45.411999][ C1] ? add_chain_cache+0x248/0x8b0 [ 45.412137][ C1] ? save_trace+0x8f/0x5b0 [ 45.412280][ C1] mark_lock+0x28d/0x3e0 [ 45.412395][ C1] mark_usage+0xd9/0x2a0 [ 45.412503][ C1] __lock_acquire+0x797/0x1570 [ 45.412741][ C1] ? __lock_acquire+0xaf0/0x1570 [ 45.412885][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.413141][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.413282][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.413595][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.413742][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 45.413880][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.414100][ C1] ? lock_acquire+0x32/0xc0 [ 45.414237][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.414465][ C1] _raw_spin_lock+0x30/0x40 [ 45.414603][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.414890][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.415101][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.415341][ C1] call_timer_fn+0x13b/0x230 [ 45.415520][ C1] ? call_timer_fn+0xe8/0x230 [ 45.415777][ C1] ? call_timer_fn+0xe8/0x230 [ 45.415947][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 45.416117][ C1] ? mark_lock+0x38/0x3e0 [ 45.416230][ C1] __run_timers+0x545/0x810 [ 45.416459][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.416705][ C1] ? __pfx___run_timers+0x10/0x10 [ 45.416845][ C1] ? __lock_release+0x103/0x460 [ 45.416996][ C1] ? do_raw_spin_lock+0x131/0x270 [ 45.417142][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.417290][ C1] ? lock_acquire+0x32/0xc0 [ 45.417437][ C1] ? timer_expire_remote+0x93/0xe0 [ 45.417587][ C1] timer_expire_remote+0x9b/0xe0 [ 45.417820][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 45.417963][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 45.418147][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.418303][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 45.418609][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 45.418763][ C1] __do_softirq+0x1f8/0x5df [ 45.418905][ C1] irq_exit_rcu+0x97/0xc0 [ 45.419013][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.419162][ C1] [ 45.419325][ C1] [ 45.419408][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.419585][ C1] RIP: 0010:default_idle+0xf/0x20 [ 45.419733][ C1] 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 [ 45.420310][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 45.420538][ C1] RAX: 00000000000911b7 RBX: 1ffff92000029fc1 RCX: ffffffff9e30f9e5 [ 45.420872][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9bcaa4a4 [ 45.421124][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 45.421370][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 45.421695][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 45.421942][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.422105][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 45.422353][ C1] default_idle_call+0x6d/0xb0 [ 45.422517][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.422680][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.422843][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.423008][ C1] do_idle+0xf9/0x160 [ 45.423212][ C1] cpu_startup_entry+0x54/0x60 [ 45.423377][ C1] start_secondary+0x21c/0x2b0 [ 45.423540][ C1] ? __pfx_start_secondary+0x10/0x10 [ 45.423710][ C1] common_startup_64+0x12c/0x138 [ 45.423956][ C1] [ 66.260234][ T352] veth0: left promiscuous mode [ 66.572911][ T356] veth3: entered promiscuous mode [ 68.428961][ T365] veth3: left promiscuous mode [ 68.617255][ T367] veth3: entered promiscuous mode [ 70.423420][ T376] veth3: left promiscuous mode [ 70.631310][ T379] veth3: entered promiscuous mode [ 72.466864][ T388] veth3: left promiscuous mode [ 72.662971][ T390] veth3: entered promiscuous mode [ 74.551086][ T399] veth3: left promiscuous mode [ 98.390869][ T429] br0: port 2(veth2) entered disabled state [ 98.495743][ T430] br0: port 1(veth1) entered disabled state [ 98.595024][ T431] veth2: left allmulticast mode [ 98.595383][ T431] veth2: left promiscuous mode [ 98.595821][ T431] br0: port 2(veth2) entered disabled state [ 98.596954][ T431] veth1: left allmulticast mode [ 98.597110][ T431] veth1: left promiscuous mode [ 98.597377][ T431] br0: port 1(veth1) entered disabled state