[ 25.040271][ T235] ip (235) used greatest stack depth: 23392 bytes left [ 29.153324][ T284] br0: port 1(veth1) entered blocking state [ 29.154075][ T284] br0: port 1(veth1) entered disabled state [ 29.154487][ T284] veth1: entered allmulticast mode [ 29.156658][ T284] veth1: entered promiscuous mode [ 29.281092][ T286] br0: port 2(veth2) entered blocking state [ 29.281387][ T286] br0: port 2(veth2) entered disabled state [ 29.281678][ T286] veth2: entered allmulticast mode [ 29.283699][ T286] veth2: entered promiscuous mode [ 29.546715][ T64] br0: port 1(veth1) entered blocking state [ 29.547072][ T64] br0: port 1(veth1) entered forwarding state [ 29.667777][ T49] br0: port 2(veth2) entered blocking state [ 29.668090][ T49] br0: port 2(veth2) entered forwarding state [ 38.741527][ T316] veth0: entered promiscuous mode [ 39.380475][ T322] GACT probability NOT on [ 44.868790][ C3] [ 44.868957][ C3] ======================================================== [ 44.869203][ C3] WARNING: possible irq lock inversion dependency detected [ 44.869435][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 44.869626][ C3] -------------------------------------------------------- [ 44.869839][ C3] swapper/3/0 just changed the state of lock: [ 44.870044][ C3] ffff8880051cac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.870456][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.870671][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 44.870675][ C3] [ 44.870675][ C3] [ 44.870675][ C3] and interrupts could create inverse lock ordering between them. [ 44.870675][ C3] [ 44.871214][ C3] [ 44.871214][ C3] other info that might help us debug this: [ 44.871441][ C3] Chain exists of: [ 44.871441][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.871441][ C3] [ 44.871762][ C3] Possible interrupt unsafe locking scenario: [ 44.871762][ C3] [ 44.871968][ C3] CPU0 CPU1 [ 44.872110][ C3] ---- ---- [ 44.872260][ C3] lock(&p->alloc_lock); [ 44.872381][ C3] local_irq_disable(); [ 44.872585][ C3] lock(&br->lock); [ 44.872767][ C3] lock(lweventlist_lock); [ 44.872941][ C3] <Interrupt> [ 44.873049][ C3] lock(&br->lock); [ 44.873157][ C3] [ 44.873157][ C3] *** DEADLOCK *** [ 44.873157][ C3] [ 44.873359][ C3] 1 lock held by swapper/3/0: [ 44.873493][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.873786][ C3] [ 44.873786][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 44.874023][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.874164][ C3] HARDIRQ-ON-W at: [ 44.874270][ C3] __lock_acquire+0x797/0x1570 [ 44.874452][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.874631][ C3] _raw_spin_lock+0x30/0x40 [ 44.874807][ C3] set_mems_allowed+0x1d/0x210 [ 44.875011][ C3] kernel_init_freeable+0x72/0x310 [ 44.875185][ C3] kernel_init+0x20/0x200 [ 44.875357][ C3] ret_from_fork+0x31/0x70 [ 44.875542][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.875716][ C3] SOFTIRQ-ON-W at: [ 44.875824][ C3] __lock_acquire+0x797/0x1570 [ 44.875999][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.876171][ C3] _raw_spin_lock+0x30/0x40 [ 44.876350][ C3] set_mems_allowed+0x1d/0x210 [ 44.876519][ C3] kernel_init_freeable+0x72/0x310 [ 44.876722][ C3] kernel_init+0x20/0x200 [ 44.876911][ C3] ret_from_fork+0x31/0x70 [ 44.877092][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.877276][ C3] INITIAL USE at: [ 44.877384][ C3] __lock_acquire+0x797/0x1570 [ 44.877569][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.877752][ C3] _raw_spin_lock+0x30/0x40 [ 44.877946][ C3] set_mems_allowed+0x1d/0x210 [ 44.878126][ C3] kernel_init_freeable+0x72/0x310 [ 44.878318][ C3] kernel_init+0x20/0x200 [ 44.878497][ C3] ret_from_fork+0x31/0x70 [ 44.878688][ C3] ret_from_fork_asm+0x1a/0x30 [ 44.878877][ C3] } [ 44.878950][ C3] ... key at: [<ffffffff87bffd20>] __key.387+0x0/0x40 [ 44.879171][ C3] ... acquired at: [ 44.879276][ C3] __lock_acquire+0xaf0/0x1570 [ 44.879418][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.879556][ C3] _raw_spin_lock+0x30/0x40 [ 44.879694][ C3] __get_task_comm+0x27/0x70 [ 44.879837][ C3] ref_tracker_alloc+0x2ee/0x490 [ 44.879981][ C3] linkwatch_fire_event+0x196/0x200 [ 44.880133][ C3] veth_newlink+0x367/0x830 [veth] [ 44.880289][ C3] rtnl_newlink_create+0x341/0x850 [ 44.880431][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.880574][ C3] rtnl_newlink+0x63/0xa0 [ 44.880712][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.880845][ C3] netlink_rcv_skb+0x130/0x360 [ 44.880997][ C3] netlink_unicast+0x449/0x710 [ 44.881135][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.881291][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.881428][ C3] ___sys_sendmsg+0xee/0x170 [ 44.881574][ C3] __sys_sendmsg+0xcd/0x170 [ 44.881714][ C3] do_syscall_64+0xc6/0x1e0 [ 44.881855][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.882023][ C3] [ 44.882096][ C3] -> (lweventlist_lock){....}-{2:2} { [ 44.882245][ C3] INITIAL USE at: [ 44.882347][ C3] __lock_acquire+0x797/0x1570 [ 44.882523][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.882694][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.882877][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 44.883050][ C3] rtnl_getlink+0x4c9/0x970 [ 44.883218][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.883387][ C3] netlink_rcv_skb+0x130/0x360 [ 44.883562][ C3] netlink_unicast+0x449/0x710 [ 44.883729][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.883909][ C3] __sys_sendto+0x37d/0x410 [ 44.884087][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.884265][ C3] do_syscall_64+0xc6/0x1e0 [ 44.884435][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.884642][ C3] } [ 44.884719][ C3] ... key at: [<ffffffff86b9a738>] lweventlist_lock+0x18/0x60 [ 44.884933][ C3] ... acquired at: [ 44.885032][ C3] __lock_acquire+0xaf0/0x1570 [ 44.885177][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.885324][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.885463][ C3] linkwatch_fire_event+0x74/0x200 [ 44.885607][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.885840][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.886046][ C3] dev_set_mac_address+0x28a/0x410 [ 44.886188][ C3] dev_set_mac_address_user+0x31/0x50 [ 44.886324][ C3] do_setlink+0x17b4/0x21e0 [ 44.886467][ C3] rtnl_setlink+0x1f7/0x310 [ 44.886609][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.886750][ C3] netlink_rcv_skb+0x130/0x360 [ 44.886896][ C3] netlink_unicast+0x449/0x710 [ 44.887037][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.887182][ C3] __sys_sendto+0x37d/0x410 [ 44.887319][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 44.887466][ C3] do_syscall_64+0xc6/0x1e0 [ 44.887606][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.887790][ C3] [ 44.887858][ C3] -> (&br->lock){+.-.}-{2:2} { [ 44.888006][ C3] HARDIRQ-ON-W at: [ 44.888122][ C3] __lock_acquire+0x797/0x1570 [ 44.888306][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.888485][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.888666][ C3] br_set_ageing_time+0x2d/0xf0 [bridge] [ 44.888917][ C3] br_changelink+0x231/0x1360 [bridge] [ 44.889127][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 44.889344][ C3] rtnl_newlink_create+0x341/0x850 [ 44.889518][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.889698][ C3] rtnl_newlink+0x63/0xa0 [ 44.889876][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.890065][ C3] netlink_rcv_skb+0x130/0x360 [ 44.890246][ C3] netlink_unicast+0x449/0x710 [ 44.890416][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.890587][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.890755][ C3] ___sys_sendmsg+0xee/0x170 [ 44.890927][ C3] __sys_sendmsg+0xcd/0x170 [ 44.891097][ C3] do_syscall_64+0xc6/0x1e0 [ 44.891273][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.891491][ C3] IN-SOFTIRQ-W at: [ 44.891595][ C3] __lock_acquire+0x797/0x1570 [ 44.891780][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.891951][ C3] _raw_spin_lock+0x30/0x40 [ 44.892123][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.892374][ C3] call_timer_fn+0x13b/0x230 [ 44.892556][ C3] __run_timers+0x545/0x810 [ 44.892726][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.892920][ C3] __do_softirq+0x1f8/0x5df [ 44.893099][ C3] irq_exit_rcu+0x97/0xc0 [ 44.893285][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.893486][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.893700][ C3] default_idle+0xf/0x20 [ 44.893877][ C3] default_idle_call+0x6d/0xb0 [ 44.894058][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.894237][ C3] do_idle+0xf9/0x160 [ 44.894377][ C3] cpu_startup_entry+0x54/0x60 [ 44.894555][ C3] start_secondary+0x21c/0x2b0 [ 44.894731][ C3] common_startup_64+0x12c/0x138 [ 44.894920][ C3] INITIAL USE at: [ 44.895025][ C3] __lock_acquire+0x797/0x1570 [ 44.895211][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.895389][ C3] _raw_spin_lock_bh+0x38/0x50 [ 44.895567][ C3] br_set_ageing_time+0x2d/0xf0 [bridge] [ 44.895823][ C3] br_changelink+0x231/0x1360 [bridge] [ 44.896040][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 44.896250][ C3] rtnl_newlink_create+0x341/0x850 [ 44.896438][ C3] __rtnl_newlink+0xac9/0xd80 [ 44.896617][ C3] rtnl_newlink+0x63/0xa0 [ 44.896800][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.896974][ C3] netlink_rcv_skb+0x130/0x360 [ 44.897150][ C3] netlink_unicast+0x449/0x710 [ 44.897335][ C3] netlink_sendmsg+0x723/0xbe0 [ 44.897518][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 44.897698][ C3] ___sys_sendmsg+0xee/0x170 [ 44.897881][ C3] __sys_sendmsg+0xcd/0x170 [ 44.898059][ C3] do_syscall_64+0xc6/0x1e0 [ 44.898241][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.898473][ C3] } [ 44.898547][ C3] ... key at: [<ffffffffc0531540>] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.898854][ C3] ... acquired at: [ 44.899125][ C3] mark_lock+0x28d/0x3e0 [ 44.899400][ C3] mark_usage+0xd9/0x2a0 [ 44.899548][ C3] __lock_acquire+0x797/0x1570 [ 44.899703][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.899854][ C3] _raw_spin_lock+0x30/0x40 [ 44.900083][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.900332][ C3] call_timer_fn+0x13b/0x230 [ 44.900482][ C3] __run_timers+0x545/0x810 [ 44.900619][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.900832][ C3] __do_softirq+0x1f8/0x5df [ 44.900971][ C3] irq_exit_rcu+0x97/0xc0 [ 44.901119][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.901294][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.901615][ C3] default_idle+0xf/0x20 [ 44.901757][ C3] default_idle_call+0x6d/0xb0 [ 44.901891][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.902031][ C3] do_idle+0xf9/0x160 [ 44.902226][ C3] cpu_startup_entry+0x54/0x60 [ 44.902360][ C3] start_secondary+0x21c/0x2b0 [ 44.902503][ C3] common_startup_64+0x12c/0x138 [ 44.902647][ C3] [ 44.902714][ C3] [ 44.902714][ C3] stack backtrace: [ 44.902966][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 44.903170][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.903562][ C3] Call Trace: [ 44.903665][ C3] <IRQ> [ 44.903742][ C3] dump_stack_lvl+0x82/0xd0 [ 44.903895][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.904068][ C3] ? common_startup_64+0x12c/0x138 [ 44.904292][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.904464][ C3] ? __pfx_usage_skip+0x10/0x10 [ 44.904609][ C3] ? __pfx_usage_match+0x10/0x10 [ 44.904748][ C3] ? arch_stack_walk+0x8c/0xf0 [ 44.904982][ C3] mark_lock_irq+0x4cd/0xa10 [ 44.905124][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.905266][ C3] ? stack_trace_save+0x94/0xd0 [ 44.905407][ C3] ? save_trace+0x8f/0x5b0 [ 44.905631][ C3] mark_lock+0x28d/0x3e0 [ 44.905741][ C3] mark_usage+0xd9/0x2a0 [ 44.905845][ C3] __lock_acquire+0x797/0x1570 [ 44.905997][ C3] ? __lock_acquire+0xaf0/0x1570 [ 44.906136][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.906467][ C3] lock_acquire.part.0+0xeb/0x330 [ 44.906603][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.906820][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.907042][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 44.907181][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.907401][ C3] ? lock_acquire+0x32/0xc0 [ 44.907539][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.907819][ C3] _raw_spin_lock+0x30/0x40 [ 44.907953][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.908154][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.908359][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.908685][ C3] call_timer_fn+0x13b/0x230 [ 44.908825][ C3] ? call_timer_fn+0xe8/0x230 [ 44.908959][ C3] ? call_timer_fn+0xe8/0x230 [ 44.909091][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 44.909301][ C3] ? mark_lock+0x38/0x3e0 [ 44.909409][ C3] __run_timers+0x545/0x810 [ 44.909549][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.909794][ C3] ? __pfx___run_timers+0x10/0x10 [ 44.910018][ C3] ? do_raw_spin_lock+0x131/0x270 [ 44.910154][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.910290][ C3] ? lock_acquire+0x32/0xc0 [ 44.910423][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 44.910644][ C3] run_timer_softirq+0xe8/0x1b0 [ 44.910782][ C3] __do_softirq+0x1f8/0x5df [ 44.910925][ C3] irq_exit_rcu+0x97/0xc0 [ 44.911027][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.911243][ C3] </IRQ> [ 44.911326][ C3] <TASK> [ 44.911394][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.911570][ C3] RIP: 0010:default_idle+0xf/0x20 [ 44.911718][ 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 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 44.912293][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 44.912469][ C3] RAX: 000000000007a29b RBX: 1ffff9200002dfc1 RCX: ffffffff8510e9d5 [ 44.912852][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82aaa4a4 [ 44.913068][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 44.913277][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 44.913485][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 44.913704][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.913851][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 44.914069][ C3] default_idle_call+0x6d/0xb0 [ 44.914215][ C3] cpuidle_idle_call+0x1f4/0x280 [ 44.914354][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.914489][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.914720][ C3] do_idle+0xf9/0x160 [ 44.914832][ C3] cpu_startup_entry+0x54/0x60 [ 44.914978][ C3] start_secondary+0x21c/0x2b0 [ 44.915122][ C3] ? __pfx_start_secondary+0x10/0x10 [ 44.915268][ C3] common_startup_64+0x12c/0x138 [ 44.915417][ C3] </TASK> [ 65.893323][ T350] veth0: left promiscuous mode [ 66.210666][ T354] veth3: entered promiscuous mode [ 68.044017][ T363] veth3: left promiscuous mode [ 68.249959][ T365] veth3: entered promiscuous mode [ 70.097635][ T374] veth3: left promiscuous mode [ 70.319215][ T377] veth3: entered promiscuous mode [ 72.219101][ T386] veth3: left promiscuous mode [ 72.441401][ T388] veth3: entered promiscuous mode [ 74.297293][ T397] veth3: left promiscuous mode [ 74.402164][ T399] br0: port 2(veth2) entered disabled state [ 74.494945][ T400] br0: port 1(veth1) entered disabled state [ 74.592886][ T401] veth2: left allmulticast mode [ 74.593060][ T401] veth2: left promiscuous mode [ 74.593314][ T401] br0: port 2(veth2) entered disabled state [ 74.594291][ T401] veth1: left allmulticast mode [ 74.594460][ T401] veth1: left promiscuous mode [ 74.595553][ T401] br0: port 1(veth1) entered disabled state