[ 27.436523][ T284] br0: port 1(veth1) entered blocking state [ 27.437932][ T284] br0: port 1(veth1) entered disabled state [ 27.438475][ T284] veth1: entered allmulticast mode [ 27.440408][ T284] veth1: entered promiscuous mode [ 27.565495][ T286] br0: port 2(veth2) entered blocking state [ 27.565825][ T286] br0: port 2(veth2) entered disabled state [ 27.566986][ T286] veth2: entered allmulticast mode [ 27.569825][ T286] veth2: entered promiscuous mode [ 27.804866][ T51] br0: port 1(veth1) entered blocking state [ 27.805287][ T51] br0: port 1(veth1) entered forwarding state [ 27.931031][ T63] br0: port 2(veth2) entered blocking state [ 27.931303][ T63] br0: port 2(veth2) entered forwarding state [ 36.928743][ T316] veth0: entered promiscuous mode [ 37.513684][ T322] GACT probability NOT on [ 37.541721][ T319] tc (319) used greatest stack depth: 23360 bytes left [ 43.307035][ C3] [ 43.307299][ C3] ======================================================== [ 43.307537][ C3] WARNING: possible irq lock inversion dependency detected [ 43.307739][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 43.307892][ C3] -------------------------------------------------------- [ 43.308095][ C3] swapper/3/0 just changed the state of lock: [ 43.308260][ C3] ffff888005b7ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.308629][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.308837][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 43.308842][ C3] [ 43.308842][ C3] [ 43.308842][ C3] and interrupts could create inverse lock ordering between them. [ 43.308842][ C3] [ 43.309327][ C3] [ 43.309327][ C3] other info that might help us debug this: [ 43.309522][ C3] Chain exists of: [ 43.309522][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.309522][ C3] [ 43.309840][ C3] Possible interrupt unsafe locking scenario: [ 43.309840][ C3] [ 43.310033][ C3] CPU0 CPU1 [ 43.310166][ C3] ---- ---- [ 43.310300][ C3] lock(&p->alloc_lock); [ 43.310404][ C3] local_irq_disable(); [ 43.310567][ C3] lock(&br->lock); [ 43.310738][ C3] lock(lweventlist_lock); [ 43.310903][ C3] [ 43.311012][ C3] lock(&br->lock); [ 43.311115][ C3] [ 43.311115][ C3] *** DEADLOCK *** [ 43.311115][ C3] [ 43.311309][ C3] 1 lock held by swapper/3/0: [ 43.311453][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.311741][ C3] [ 43.311741][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 43.311974][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.312112][ C3] HARDIRQ-ON-W at: [ 43.312216][ C3] __lock_acquire+0x797/0x1570 [ 43.312394][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.312561][ C3] _raw_spin_lock+0x30/0x40 [ 43.312737][ C3] set_mems_allowed+0x1d/0x210 [ 43.312908][ C3] kernel_init_freeable+0x72/0x310 [ 43.313078][ C3] kernel_init+0x20/0x200 [ 43.313246][ C3] ret_from_fork+0x31/0x70 [ 43.313420][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.313585][ C3] SOFTIRQ-ON-W at: [ 43.313717][ C3] __lock_acquire+0x797/0x1570 [ 43.313893][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.314062][ C3] _raw_spin_lock+0x30/0x40 [ 43.314231][ C3] set_mems_allowed+0x1d/0x210 [ 43.314401][ C3] kernel_init_freeable+0x72/0x310 [ 43.314570][ C3] kernel_init+0x20/0x200 [ 43.314739][ C3] ret_from_fork+0x31/0x70 [ 43.314908][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.315078][ C3] INITIAL USE at: [ 43.315178][ C3] __lock_acquire+0x797/0x1570 [ 43.315353][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.315520][ C3] _raw_spin_lock+0x30/0x40 [ 43.315692][ C3] set_mems_allowed+0x1d/0x210 [ 43.315863][ C3] kernel_init_freeable+0x72/0x310 [ 43.316032][ C3] kernel_init+0x20/0x200 [ 43.316203][ C3] ret_from_fork+0x31/0x70 [ 43.316372][ C3] ret_from_fork_asm+0x1a/0x30 [ 43.316544][ C3] } [ 43.316614][ C3] ... key at: [] __key.387+0x0/0x40 [ 43.316823][ C3] ... acquired at: [ 43.316925][ C3] __lock_acquire+0xaf0/0x1570 [ 43.317066][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.317199][ C3] _raw_spin_lock+0x30/0x40 [ 43.317332][ C3] __get_task_comm+0x27/0x70 [ 43.317469][ C3] ref_tracker_alloc+0x2ee/0x490 [ 43.317610][ C3] linkwatch_fire_event+0x196/0x200 [ 43.317747][ C3] veth_newlink+0x367/0x830 [veth] [ 43.317890][ C3] rtnl_newlink_create+0x341/0x850 [ 43.318025][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.318158][ C3] rtnl_newlink+0x63/0xa0 [ 43.318291][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.318426][ C3] netlink_rcv_skb+0x130/0x360 [ 43.318565][ C3] netlink_unicast+0x449/0x710 [ 43.318700][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.318833][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.318966][ C3] ___sys_sendmsg+0xee/0x170 [ 43.319103][ C3] __sys_sendmsg+0xcd/0x170 [ 43.319240][ C3] do_syscall_64+0xc6/0x1e0 [ 43.319375][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.319542][ C3] [ 43.319609][ C3] -> (lweventlist_lock){....}-{2:2} { [ 43.319748][ C3] INITIAL USE at: [ 43.319848][ C3] __lock_acquire+0x797/0x1570 [ 43.320015][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.320189][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.320360][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 43.320529][ C3] rtnl_getlink+0x4c9/0x970 [ 43.320696][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.320867][ C3] netlink_rcv_skb+0x130/0x360 [ 43.321033][ C3] netlink_unicast+0x449/0x710 [ 43.321205][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.321372][ C3] __sys_sendto+0x37d/0x410 [ 43.321555][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.321723][ C3] do_syscall_64+0xc6/0x1e0 [ 43.321894][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.322099][ C3] } [ 43.322171][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.322370][ C3] ... acquired at: [ 43.322469][ C3] __lock_acquire+0xaf0/0x1570 [ 43.322606][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.322739][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.322872][ C3] linkwatch_fire_event+0x74/0x200 [ 43.323007][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.323219][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.323419][ C3] dev_set_mac_address+0x28a/0x410 [ 43.323556][ C3] dev_set_mac_address_user+0x31/0x50 [ 43.323691][ C3] do_setlink+0x17b4/0x21e0 [ 43.323827][ C3] rtnl_setlink+0x1f7/0x310 [ 43.323959][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.324091][ C3] netlink_rcv_skb+0x130/0x360 [ 43.324225][ C3] netlink_unicast+0x449/0x710 [ 43.324364][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.324502][ C3] __sys_sendto+0x37d/0x410 [ 43.324637][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 43.324770][ C3] do_syscall_64+0xc6/0x1e0 [ 43.324903][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.325071][ C3] [ 43.325139][ C3] -> (&br->lock){+.-.}-{2:2} { [ 43.325280][ C3] HARDIRQ-ON-W at: [ 43.325381][ C3] __lock_acquire+0x797/0x1570 [ 43.325558][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.325724][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.325895][ C3] br_set_ageing_time+0x2d/0xf0 [bridge] [ 43.326136][ C3] br_changelink+0x231/0x1360 [bridge] [ 43.326353][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 43.326558][ C3] rtnl_newlink_create+0x341/0x850 [ 43.326726][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.326900][ C3] rtnl_newlink+0x63/0xa0 [ 43.327076][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.327244][ C3] netlink_rcv_skb+0x130/0x360 [ 43.327415][ C3] netlink_unicast+0x449/0x710 [ 43.327584][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.327752][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.327926][ C3] ___sys_sendmsg+0xee/0x170 [ 43.328099][ C3] __sys_sendmsg+0xcd/0x170 [ 43.328269][ C3] do_syscall_64+0xc6/0x1e0 [ 43.328438][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.328642][ C3] IN-SOFTIRQ-W at: [ 43.328742][ C3] __lock_acquire+0x797/0x1570 [ 43.328911][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.329084][ C3] _raw_spin_lock+0x30/0x40 [ 43.329254][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.329491][ C3] call_timer_fn+0x13b/0x230 [ 43.329663][ C3] __run_timers+0x545/0x810 [ 43.329835][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.330003][ C3] __do_softirq+0x1f8/0x5df [ 43.330175][ C3] irq_exit_rcu+0x97/0xc0 [ 43.330346][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.330545][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.330747][ C3] default_idle+0xf/0x20 [ 43.330918][ C3] default_idle_call+0x6d/0xb0 [ 43.331084][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.331259][ C3] do_idle+0xf9/0x160 [ 43.331393][ C3] cpu_startup_entry+0x54/0x60 [ 43.331573][ C3] start_secondary+0x21c/0x2b0 [ 43.331741][ C3] common_startup_64+0x12c/0x138 [ 43.331908][ C3] INITIAL USE at: [ 43.332010][ C3] __lock_acquire+0x797/0x1570 [ 43.332259][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.332430][ C3] _raw_spin_lock_bh+0x38/0x50 [ 43.332602][ C3] br_set_ageing_time+0x2d/0xf0 [bridge] [ 43.332919][ C3] br_changelink+0x231/0x1360 [bridge] [ 43.333124][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 43.333328][ C3] rtnl_newlink_create+0x341/0x850 [ 43.333495][ C3] __rtnl_newlink+0xac9/0xd80 [ 43.333666][ C3] rtnl_newlink+0x63/0xa0 [ 43.333834][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.334000][ C3] netlink_rcv_skb+0x130/0x360 [ 43.334246][ C3] netlink_unicast+0x449/0x710 [ 43.334415][ C3] netlink_sendmsg+0x723/0xbe0 [ 43.334585][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 43.334833][ C3] ___sys_sendmsg+0xee/0x170 [ 43.335005][ C3] __sys_sendmsg+0xcd/0x170 [ 43.335173][ C3] do_syscall_64+0xc6/0x1e0 [ 43.335340][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.335621][ C3] } [ 43.335688][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.335960][ C3] ... acquired at: [ 43.336058][ C3] mark_lock+0x28d/0x3e0 [ 43.336275][ C3] mark_usage+0xd9/0x2a0 [ 43.336409][ C3] __lock_acquire+0x797/0x1570 [ 43.336546][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.336679][ C3] _raw_spin_lock+0x30/0x40 [ 43.336891][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.337094][ C3] call_timer_fn+0x13b/0x230 [ 43.337229][ C3] __run_timers+0x545/0x810 [ 43.337363][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.337583][ C3] __do_softirq+0x1f8/0x5df [ 43.337720][ C3] irq_exit_rcu+0x97/0xc0 [ 43.337853][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.338017][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.338257][ C3] default_idle+0xf/0x20 [ 43.338390][ C3] default_idle_call+0x6d/0xb0 [ 43.338522][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.338655][ C3] do_idle+0xf9/0x160 [ 43.338837][ C3] cpu_startup_entry+0x54/0x60 [ 43.338970][ C3] start_secondary+0x21c/0x2b0 [ 43.339105][ C3] common_startup_64+0x12c/0x138 [ 43.339238][ C3] [ 43.339305][ C3] [ 43.339305][ C3] stack backtrace: [ 43.339544][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 43.339746][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.340120][ C3] Call Trace: [ 43.340221][ C3] [ 43.340292][ C3] dump_stack_lvl+0x82/0xd0 [ 43.340429][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.340595][ C3] ? common_startup_64+0x12c/0x138 [ 43.340807][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.340971][ C3] ? __pfx_usage_skip+0x10/0x10 [ 43.341103][ C3] ? __pfx_usage_match+0x10/0x10 [ 43.341242][ C3] ? arch_stack_walk+0x8c/0xf0 [ 43.341465][ C3] mark_lock_irq+0x4cd/0xa10 [ 43.341602][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.341734][ C3] ? stack_trace_save+0x94/0xd0 [ 43.341868][ C3] ? add_chain_cache+0x248/0x8b0 [ 43.342152][ C3] ? save_trace+0x8f/0x5b0 [ 43.342286][ C3] mark_lock+0x28d/0x3e0 [ 43.342390][ C3] mark_usage+0xd9/0x2a0 [ 43.342491][ C3] __lock_acquire+0x797/0x1570 [ 43.342628][ C3] ? __lock_acquire+0xaf0/0x1570 [ 43.342837][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.343074][ C3] lock_acquire.part.0+0xeb/0x330 [ 43.343208][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.343487][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.343622][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 43.343755][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.343961][ C3] ? lock_acquire+0x32/0xc0 [ 43.344169][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.344371][ C3] _raw_spin_lock+0x30/0x40 [ 43.344505][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.344706][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.344992][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.345226][ C3] call_timer_fn+0x13b/0x230 [ 43.345364][ C3] ? call_timer_fn+0xe8/0x230 [ 43.345501][ C3] ? call_timer_fn+0xe8/0x230 [ 43.345634][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 43.345802][ C3] ? mark_lock+0x38/0x3e0 [ 43.345915][ C3] __run_timers+0x545/0x810 [ 43.346048][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.346361][ C3] ? __pfx___run_timers+0x10/0x10 [ 43.346496][ C3] ? do_raw_spin_lock+0x131/0x270 [ 43.346633][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.346765][ C3] ? lock_acquire+0x32/0xc0 [ 43.346983][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 43.347118][ C3] run_timer_softirq+0xe8/0x1b0 [ 43.347256][ C3] __do_softirq+0x1f8/0x5df [ 43.347389][ C3] irq_exit_rcu+0x97/0xc0 [ 43.347490][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.347623][ C3] [ 43.347692][ C3] [ 43.347763][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.347926][ C3] RIP: 0010:default_idle+0xf/0x20 [ 43.348146][ 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 [ 43.348617][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 43.348865][ C3] RAX: 000000000007b7c3 RBX: 1ffff9200002dfc1 RCX: ffffffff9130e9d5 [ 43.349076][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ecaa4a4 [ 43.349275][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 43.349552][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 43.349753][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 43.349955][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.350174][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 43.350314][ C3] default_idle_call+0x6d/0xb0 [ 43.350456][ C3] cpuidle_idle_call+0x1f4/0x280 [ 43.350589][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.350798][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.350947][ C3] do_idle+0xf9/0x160 [ 43.351049][ C3] cpu_startup_entry+0x54/0x60 [ 43.351183][ C3] start_secondary+0x21c/0x2b0 [ 43.351319][ C3] ? __pfx_start_secondary+0x10/0x10 [ 43.351547][ C3] common_startup_64+0x12c/0x138 [ 43.351685][ C3] [ 64.047049][ T350] veth0: left promiscuous mode [ 64.363478][ T354] veth3: entered promiscuous mode [ 66.222748][ T363] veth3: left promiscuous mode [ 66.415571][ T365] veth3: entered promiscuous mode [ 68.294790][ T374] veth3: left promiscuous mode [ 68.498595][ T377] veth3: entered promiscuous mode [ 70.367840][ T386] veth3: left promiscuous mode [ 70.554516][ T388] veth3: entered promiscuous mode [ 72.410997][ T397] veth3: left promiscuous mode [ 72.514100][ T399] br0: port 2(veth2) entered disabled state [ 72.614697][ T400] br0: port 1(veth1) entered disabled state [ 72.717321][ T401] veth2: left allmulticast mode [ 72.717497][ T401] veth2: left promiscuous mode [ 72.717749][ T401] br0: port 2(veth2) entered disabled state [ 72.718681][ T401] veth1: left allmulticast mode [ 72.718820][ T401] veth1: left promiscuous mode [ 72.719064][ T401] br0: port 1(veth1) entered disabled state