[ 25.821269][ T236] ip (236) used greatest stack depth: 23744 bytes left [ 28.651200][ T274] 8021q: 802.1Q VLAN Support v1.8 [ 31.336719][ T297] br0: port 1(veth1) entered blocking state [ 31.337345][ T297] br0: port 1(veth1) entered disabled state [ 31.337870][ T297] veth1: entered allmulticast mode [ 31.341962][ T297] veth1: entered promiscuous mode [ 31.480300][ T299] br0: port 2(veth2) entered blocking state [ 31.480586][ T299] br0: port 2(veth2) entered disabled state [ 31.480837][ T299] veth2: entered allmulticast mode [ 31.482971][ T299] veth2: entered promiscuous mode [ 31.713861][ T24] br0: port 1(veth1) entered blocking state [ 31.714221][ T24] br0: port 1(veth1) entered forwarding state [ 31.845496][ T50] br0: port 2(veth2) entered blocking state [ 31.845783][ T50] br0: port 2(veth2) entered forwarding state [ 46.891118][ C3] [ 46.891291][ C3] ======================================================== [ 46.891536][ C3] WARNING: possible irq lock inversion dependency detected [ 46.891770][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 46.891937][ C3] -------------------------------------------------------- [ 46.892159][ C3] swapper/3/0 just changed the state of lock: [ 46.892350][ C3] ffff888004aaac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.892745][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.892968][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 46.892972][ C3] [ 46.892972][ C3] [ 46.892972][ C3] and interrupts could create inverse lock ordering between them. [ 46.892972][ C3] [ 46.893532][ C3] [ 46.893532][ C3] other info that might help us debug this: [ 46.893759][ C3] Chain exists of: [ 46.893759][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.893759][ C3] [ 46.894108][ C3] Possible interrupt unsafe locking scenario: [ 46.894108][ C3] [ 46.894340][ C3] CPU0 CPU1 [ 46.894492][ C3] ---- ---- [ 46.894645][ C3] lock(&p->alloc_lock); [ 46.894760][ C3] local_irq_disable(); [ 46.894952][ C3] lock(&br->lock); [ 46.895147][ C3] lock(lweventlist_lock); [ 46.895335][ C3] [ 46.895448][ C3] lock(&br->lock); [ 46.895575][ C3] [ 46.895575][ C3] *** DEADLOCK *** [ 46.895575][ C3] [ 46.895819][ C3] 1 lock held by swapper/3/0: [ 46.895971][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.896302][ C3] [ 46.896302][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 46.896562][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.896727][ C3] HARDIRQ-ON-W at: [ 46.896847][ C3] __lock_acquire+0x797/0x1570 [ 46.897044][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.897231][ C3] _raw_spin_lock+0x30/0x40 [ 46.897423][ C3] set_mems_allowed+0x1d/0x210 [ 46.897622][ C3] kernel_init_freeable+0x72/0x310 [ 46.897827][ C3] kernel_init+0x20/0x200 [ 46.898017][ C3] ret_from_fork+0x31/0x70 [ 46.898211][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.898401][ C3] SOFTIRQ-ON-W at: [ 46.898513][ C3] __lock_acquire+0x797/0x1570 [ 46.898712][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.898905][ C3] _raw_spin_lock+0x30/0x40 [ 46.899101][ C3] set_mems_allowed+0x1d/0x210 [ 46.899291][ C3] kernel_init_freeable+0x72/0x310 [ 46.899480][ C3] kernel_init+0x20/0x200 [ 46.899678][ C3] ret_from_fork+0x31/0x70 [ 46.899869][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.900065][ C3] INITIAL USE at: [ 46.900189][ C3] __lock_acquire+0x797/0x1570 [ 46.900377][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.900564][ C3] _raw_spin_lock+0x30/0x40 [ 46.900763][ C3] set_mems_allowed+0x1d/0x210 [ 46.900954][ C3] kernel_init_freeable+0x72/0x310 [ 46.901142][ C3] kernel_init+0x20/0x200 [ 46.901341][ C3] ret_from_fork+0x31/0x70 [ 46.901529][ C3] ret_from_fork_asm+0x1a/0x30 [ 46.901724][ C3] } [ 46.901804][ C3] ... key at: [] __key.387+0x0/0x40 [ 46.902034][ C3] ... acquired at: [ 46.902151][ C3] __lock_acquire+0xaf0/0x1570 [ 46.902304][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.902460][ C3] _raw_spin_lock+0x30/0x40 [ 46.902616][ C3] __get_task_comm+0x27/0x70 [ 46.902845][ C3] ref_tracker_alloc+0x2ee/0x490 [ 46.903022][ C3] linkwatch_fire_event+0x196/0x200 [ 46.903178][ C3] veth_newlink+0x367/0x830 [veth] [ 46.903347][ C3] rtnl_newlink_create+0x341/0x850 [ 46.903497][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.903661][ C3] rtnl_newlink+0x63/0xa0 [ 46.903818][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.903973][ C3] netlink_rcv_skb+0x130/0x360 [ 46.904128][ C3] netlink_unicast+0x449/0x710 [ 46.904279][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.904428][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.904583][ C3] ___sys_sendmsg+0xee/0x170 [ 46.904742][ C3] __sys_sendmsg+0xcd/0x170 [ 46.904894][ C3] do_syscall_64+0xc6/0x1e0 [ 46.905045][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.905242][ C3] [ 46.905323][ C3] -> (lweventlist_lock){....}-{2:2} { [ 46.905478][ C3] INITIAL USE at: [ 46.905598][ C3] __lock_acquire+0x797/0x1570 [ 46.905807][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.906001][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.906192][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 46.906395][ C3] rtnl_getlink+0x4c9/0x970 [ 46.906583][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.906779][ C3] netlink_rcv_skb+0x130/0x360 [ 46.906976][ C3] netlink_unicast+0x449/0x710 [ 46.907163][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.907347][ C3] __sys_sendto+0x37d/0x410 [ 46.907544][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.907743][ C3] do_syscall_64+0xc6/0x1e0 [ 46.907931][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.908157][ C3] } [ 46.908235][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.908455][ C3] ... acquired at: [ 46.908566][ C3] __lock_acquire+0xaf0/0x1570 [ 46.908727][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.908883][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.909034][ C3] linkwatch_fire_event+0x74/0x200 [ 46.909184][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.909422][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.909654][ C3] dev_set_mac_address+0x28a/0x410 [ 46.909806][ C3] dev_set_mac_address_user+0x31/0x50 [ 46.909959][ C3] do_setlink+0x17b4/0x21e0 [ 46.910106][ C3] rtnl_setlink+0x1f7/0x310 [ 46.910268][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.910416][ C3] netlink_rcv_skb+0x130/0x360 [ 46.910566][ C3] netlink_unicast+0x449/0x710 [ 46.910775][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.910935][ C3] __sys_sendto+0x37d/0x410 [ 46.911084][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 46.911234][ C3] do_syscall_64+0xc6/0x1e0 [ 46.911391][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.911583][ C3] [ 46.911668][ C3] -> (&br->lock){+.-.}-{2:2} { [ 46.911825][ C3] HARDIRQ-ON-W at: [ 46.911939][ C3] __lock_acquire+0x797/0x1570 [ 46.912129][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.912322][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.912512][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.912783][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.913047][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.913272][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.913497][ C3] rtnl_newlink_create+0x341/0x850 [ 46.913685][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.913875][ C3] rtnl_newlink+0x63/0xa0 [ 46.914077][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.914261][ C3] netlink_rcv_skb+0x130/0x360 [ 46.914452][ C3] netlink_unicast+0x449/0x710 [ 46.914638][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.914823][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.915015][ C3] ___sys_sendmsg+0xee/0x170 [ 46.915210][ C3] __sys_sendmsg+0xcd/0x170 [ 46.915398][ C3] do_syscall_64+0xc6/0x1e0 [ 46.915585][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.915821][ C3] IN-SOFTIRQ-W at: [ 46.915935][ C3] __lock_acquire+0x797/0x1570 [ 46.916126][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.916318][ C3] _raw_spin_lock+0x30/0x40 [ 46.916510][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.916770][ C3] call_timer_fn+0x13b/0x230 [ 46.916964][ C3] __run_timers+0x545/0x810 [ 46.917150][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.917339][ C3] __do_softirq+0x1f8/0x5df [ 46.917526][ C3] irq_exit_rcu+0x97/0xc0 [ 46.917721][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.917944][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.918168][ C3] default_idle+0xf/0x20 [ 46.918362][ C3] default_idle_call+0x6d/0xb0 [ 46.918550][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.918740][ C3] do_idle+0xf9/0x160 [ 46.918909][ C3] cpu_startup_entry+0x54/0x60 [ 46.919096][ C3] start_secondary+0x21c/0x2b0 [ 46.919286][ C3] common_startup_64+0x12c/0x138 [ 46.919584][ C3] INITIAL USE at: [ 46.919703][ C3] __lock_acquire+0x797/0x1570 [ 46.919894][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.920083][ C3] _raw_spin_lock_bh+0x38/0x50 [ 46.920285][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 46.920553][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 46.920815][ C3] br_changelink+0x36c/0x1360 [bridge] [ 46.921040][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 46.921266][ C3] rtnl_newlink_create+0x341/0x850 [ 46.921453][ C3] __rtnl_newlink+0xac9/0xd80 [ 46.921649][ C3] rtnl_newlink+0x63/0xa0 [ 46.921840][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.922029][ C3] netlink_rcv_skb+0x130/0x360 [ 46.922216][ C3] netlink_unicast+0x449/0x710 [ 46.922406][ C3] netlink_sendmsg+0x723/0xbe0 [ 46.922593][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 46.922779][ C3] ___sys_sendmsg+0xee/0x170 [ 46.922974][ C3] __sys_sendmsg+0xcd/0x170 [ 46.923245][ C3] do_syscall_64+0xc6/0x1e0 [ 46.923434][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.923658][ C3] } [ 46.923736][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.924195][ C3] ... acquired at: [ 46.924308][ C3] mark_lock+0x28d/0x3e0 [ 46.924464][ C3] mark_usage+0xd9/0x2a0 [ 46.924612][ C3] __lock_acquire+0x797/0x1570 [ 46.924839][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.924988][ C3] _raw_spin_lock+0x30/0x40 [ 46.925143][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.925366][ C3] call_timer_fn+0x13b/0x230 [ 46.925594][ C3] __run_timers+0x545/0x810 [ 46.925749][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.925911][ C3] __do_softirq+0x1f8/0x5df [ 46.926059][ C3] irq_exit_rcu+0x97/0xc0 [ 46.926284][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.926472][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.926660][ C3] default_idle+0xf/0x20 [ 46.926809][ C3] default_idle_call+0x6d/0xb0 [ 46.927109][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.927259][ C3] do_idle+0xf9/0x160 [ 46.927375][ C3] cpu_startup_entry+0x54/0x60 [ 46.927523][ C3] start_secondary+0x21c/0x2b0 [ 46.927750][ C3] common_startup_64+0x12c/0x138 [ 46.927901][ C3] [ 46.927976][ C3] [ 46.927976][ C3] stack backtrace: [ 46.928159][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 46.928460][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.928798][ C3] Call Trace: [ 46.928913][ C3] [ 46.928994][ C3] dump_stack_lvl+0x82/0xd0 [ 46.929228][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.929414][ C3] ? common_startup_64+0x12c/0x138 [ 46.929567][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.929750][ C3] ? __pfx_usage_skip+0x10/0x10 [ 46.929974][ C3] ? __pfx_usage_match+0x10/0x10 [ 46.930127][ C3] ? arch_stack_walk+0x8c/0xf0 [ 46.930278][ C3] mark_lock_irq+0x4cd/0xa10 [ 46.930429][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.930654][ C3] ? stack_trace_save+0x94/0xd0 [ 46.930803][ C3] ? add_chain_cache+0x248/0x8b0 [ 46.930956][ C3] ? save_trace+0x8f/0x5b0 [ 46.931106][ C3] mark_lock+0x28d/0x3e0 [ 46.931297][ C3] mark_usage+0xd9/0x2a0 [ 46.931411][ C3] __lock_acquire+0x797/0x1570 [ 46.931567][ C3] ? __lock_acquire+0xaf0/0x1570 [ 46.931716][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.932055][ C3] lock_acquire.part.0+0xeb/0x330 [ 46.932204][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.932425][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.932578][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 46.932804][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.933034][ C3] ? lock_acquire+0x32/0xc0 [ 46.933181][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.933405][ C3] _raw_spin_lock+0x30/0x40 [ 46.933632][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.933855][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.934094][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.934427][ C3] call_timer_fn+0x13b/0x230 [ 46.934665][ C3] ? call_timer_fn+0xe8/0x230 [ 46.934897][ C3] ? call_timer_fn+0xe8/0x230 [ 46.935135][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 46.935370][ C3] ? mark_lock+0x38/0x3e0 [ 46.935700][ C3] __run_timers+0x545/0x810 [ 46.935937][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.936359][ C3] ? __pfx___run_timers+0x10/0x10 [ 46.936599][ C3] ? do_raw_spin_lock+0x131/0x270 [ 46.936986][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.937221][ C3] ? lock_acquire+0x32/0xc0 [ 46.937457][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 46.937695][ C3] run_timer_softirq+0xe8/0x1b0 [ 46.938074][ C3] __do_softirq+0x1f8/0x5df [ 46.938314][ C3] irq_exit_rcu+0x97/0xc0 [ 46.938496][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.938732][ C3] [ 46.938858][ C3] [ 46.939127][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.939421][ C3] RIP: 0010:default_idle+0xf/0x20 [ 46.939667][ 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 [ 46.940660][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 46.940959][ C3] RAX: 0000000000096cc7 RBX: 1ffff9200002dfc1 RCX: ffffffffa150e9d5 [ 46.941617][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9eeaa4a4 [ 46.941972][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 46.942325][ C3] R10: ffff8880361b84e3 R11: ffff8880361bdc80 R12: 0000000000000000 [ 46.942824][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 46.943180][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.943427][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 46.943666][ C3] default_idle_call+0x6d/0xb0 [ 46.944046][ C3] cpuidle_idle_call+0x1f4/0x280 [ 46.944282][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.944519][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.944759][ C3] do_idle+0xf9/0x160 [ 46.945081][ C3] cpu_startup_entry+0x54/0x60 [ 46.945319][ C3] start_secondary+0x21c/0x2b0 [ 46.945559][ C3] ? __pfx_start_secondary+0x10/0x10 [ 46.945797][ C3] common_startup_64+0x12c/0x138 [ 46.946042][ C3] [ 63.298535][ T375] br0: port 2(veth2) entered disabled state [ 63.395207][ T376] br0: port 1(veth1) entered disabled state [ 63.489303][ T377] veth2: left allmulticast mode [ 63.489514][ T377] veth2: left promiscuous mode [ 63.489850][ T377] br0: port 2(veth2) entered disabled state [ 63.490913][ T377] veth1: left allmulticast mode [ 63.491100][ T377] veth1: left promiscuous mode [ 63.491431][ T377] br0: port 1(veth1) entered disabled state