[ 32.822297][ T291] veth1: entered promiscuous mode [ 57.335171][ T373] veth1: entered allmulticast mode [ 57.348009][ T373] ip (373) used greatest stack depth: 24000 bytes left [ 63.698703][ T388] veth1: left allmulticast mode [ 72.810804][ T458] veth1: left promiscuous mode [ 73.202296][ T463] ip (463) used greatest stack depth: 23304 bytes left [ 76.419303][ T489] br0: port 1(veth1) entered blocking state [ 76.419569][ T489] br0: port 1(veth1) entered disabled state [ 76.419810][ T489] veth1: entered allmulticast mode [ 76.421673][ T489] veth1: entered promiscuous mode [ 76.537311][ T50] br0: port 1(veth1) entered blocking state [ 76.537698][ T50] br0: port 1(veth1) entered forwarding state [ 77.104064][ T496] br0: port 1(veth1) entered disabled state [ 77.105927][ T496] br0: port 1(veth1) entered blocking state [ 77.106264][ T496] br0: port 1(veth1) entered forwarding state [ 77.764334][ T503] br0: entered promiscuous mode [ 92.471671][ C1] [ 92.471827][ C1] ======================================================== [ 92.472058][ C1] WARNING: possible irq lock inversion dependency detected [ 92.472262][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 92.472402][ C1] -------------------------------------------------------- [ 92.472608][ C1] swapper/1/0 just changed the state of lock: [ 92.472775][ C1] ffff888007bb2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.473172][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 92.473385][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 92.473389][ C1] [ 92.473389][ C1] [ 92.473389][ C1] and interrupts could create inverse lock ordering between them. [ 92.473389][ C1] [ 92.473892][ C1] [ 92.473892][ C1] other info that might help us debug this: [ 92.474117][ C1] Chain exists of: [ 92.474117][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 92.474117][ C1] [ 92.474423][ C1] Possible interrupt unsafe locking scenario: [ 92.474423][ C1] [ 92.474646][ C1] CPU0 CPU1 [ 92.474790][ C1] ---- ---- [ 92.474942][ C1] lock(&p->alloc_lock); [ 92.475051][ C1] local_irq_disable(); [ 92.475239][ C1] lock(&br->lock); [ 92.475417][ C1] lock(lweventlist_lock); [ 92.475594][ C1] [ 92.475699][ C1] lock(&br->lock); [ 92.475813][ C1] [ 92.475813][ C1] *** DEADLOCK *** [ 92.475813][ C1] [ 92.476036][ C1] 1 lock held by swapper/1/0: [ 92.476189][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 92.476489][ C1] [ 92.476489][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 92.476735][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 92.476878][ C1] HARDIRQ-ON-W at: [ 92.477013][ C1] __lock_acquire+0x797/0x1570 [ 92.477203][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.477382][ C1] _raw_spin_lock+0x30/0x40 [ 92.477574][ C1] set_mems_allowed+0x1d/0x210 [ 92.477758][ C1] kernel_init_freeable+0x72/0x310 [ 92.477955][ C1] kernel_init+0x20/0x200 [ 92.478129][ C1] ret_from_fork+0x31/0x70 [ 92.478325][ C1] ret_from_fork_asm+0x1a/0x30 [ 92.478499][ C1] SOFTIRQ-ON-W at: [ 92.478604][ C1] __lock_acquire+0x797/0x1570 [ 92.478775][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.478952][ C1] _raw_spin_lock+0x30/0x40 [ 92.479123][ C1] set_mems_allowed+0x1d/0x210 [ 92.479299][ C1] kernel_init_freeable+0x72/0x310 [ 92.479482][ C1] kernel_init+0x20/0x200 [ 92.479657][ C1] ret_from_fork+0x31/0x70 [ 92.479833][ C1] ret_from_fork_asm+0x1a/0x30 [ 92.480022][ C1] INITIAL USE at: [ 92.480128][ C1] __lock_acquire+0x797/0x1570 [ 92.480306][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.480481][ C1] _raw_spin_lock+0x30/0x40 [ 92.480655][ C1] set_mems_allowed+0x1d/0x210 [ 92.480827][ C1] kernel_init_freeable+0x72/0x310 [ 92.481017][ C1] kernel_init+0x20/0x200 [ 92.481191][ C1] ret_from_fork+0x31/0x70 [ 92.481363][ C1] ret_from_fork_asm+0x1a/0x30 [ 92.481543][ C1] } [ 92.481615][ C1] ... key at: [] __key.387+0x0/0x40 [ 92.481823][ C1] ... acquired at: [ 92.481930][ C1] __lock_acquire+0xaf0/0x1570 [ 92.482076][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.482213][ C1] _raw_spin_lock+0x30/0x40 [ 92.482351][ C1] __get_task_comm+0x27/0x70 [ 92.482490][ C1] ref_tracker_alloc+0x2ee/0x490 [ 92.482637][ C1] linkwatch_fire_event+0x196/0x200 [ 92.482776][ C1] veth_newlink+0x367/0x830 [veth] [ 92.482926][ C1] rtnl_newlink_create+0x341/0x850 [ 92.483069][ C1] __rtnl_newlink+0xac9/0xd80 [ 92.483208][ C1] rtnl_newlink+0x63/0xa0 [ 92.483342][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 92.483480][ C1] netlink_rcv_skb+0x130/0x360 [ 92.483623][ C1] netlink_unicast+0x449/0x710 [ 92.483763][ C1] netlink_sendmsg+0x723/0xbe0 [ 92.483900][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 92.484052][ C1] ___sys_sendmsg+0xee/0x170 [ 92.484191][ C1] __sys_sendmsg+0xcd/0x170 [ 92.484329][ C1] do_syscall_64+0xc6/0x1e0 [ 92.484468][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 92.484644][ C1] [ 92.484728][ C1] -> (lweventlist_lock){....}-{2:2} { [ 92.484873][ C1] INITIAL USE at: [ 92.485015][ C1] __lock_acquire+0x797/0x1570 [ 92.485193][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.485376][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 92.485554][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 92.485736][ C1] rtnl_getlink+0x4c9/0x970 [ 92.485917][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 92.486104][ C1] netlink_rcv_skb+0x130/0x360 [ 92.486289][ C1] netlink_unicast+0x449/0x710 [ 92.486477][ C1] netlink_sendmsg+0x723/0xbe0 [ 92.486652][ C1] __sys_sendto+0x37d/0x410 [ 92.486839][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 92.487035][ C1] do_syscall_64+0xc6/0x1e0 [ 92.487207][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 92.487431][ C1] } [ 92.487519][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 92.487734][ C1] ... acquired at: [ 92.487850][ C1] __lock_acquire+0xaf0/0x1570 [ 92.488009][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.488166][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 92.488328][ C1] linkwatch_fire_event+0x74/0x200 [ 92.488465][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 92.488694][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 92.488908][ C1] dev_set_mac_address+0x28a/0x410 [ 92.489057][ C1] dev_set_mac_address_user+0x31/0x50 [ 92.489195][ C1] do_setlink+0x17b4/0x21e0 [ 92.489343][ C1] rtnl_setlink+0x1f7/0x310 [ 92.489485][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 92.489632][ C1] netlink_rcv_skb+0x130/0x360 [ 92.489774][ C1] netlink_unicast+0x449/0x710 [ 92.489922][ C1] netlink_sendmsg+0x723/0xbe0 [ 92.490085][ C1] __sys_sendto+0x37d/0x410 [ 92.490241][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 92.490381][ C1] do_syscall_64+0xc6/0x1e0 [ 92.490533][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 92.490717][ C1] [ 92.490791][ C1] -> (&br->lock){+.-.}-{2:2} { [ 92.490954][ C1] HARDIRQ-ON-W at: [ 92.491065][ C1] __lock_acquire+0x797/0x1570 [ 92.491249][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.491426][ C1] _raw_spin_lock_bh+0x38/0x50 [ 92.491611][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 92.491867][ C1] dev_set_mac_address+0x28a/0x410 [ 92.492065][ C1] dev_set_mac_address_user+0x31/0x50 [ 92.492257][ C1] do_setlink+0x17b4/0x21e0 [ 92.492439][ C1] rtnl_setlink+0x1f7/0x310 [ 92.492631][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 92.492808][ C1] netlink_rcv_skb+0x130/0x360 [ 92.493022][ C1] netlink_unicast+0x449/0x710 [ 92.493218][ C1] netlink_sendmsg+0x723/0xbe0 [ 92.493396][ C1] __sys_sendto+0x37d/0x410 [ 92.493581][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 92.493764][ C1] do_syscall_64+0xc6/0x1e0 [ 92.493949][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 92.494173][ C1] IN-SOFTIRQ-W at: [ 92.494294][ C1] __lock_acquire+0x797/0x1570 [ 92.494471][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.494660][ C1] _raw_spin_lock+0x30/0x40 [ 92.494843][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.495117][ C1] call_timer_fn+0x13b/0x230 [ 92.495293][ C1] __run_timers+0x545/0x810 [ 92.495476][ C1] timer_expire_remote+0x9b/0xe0 [ 92.495656][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 92.495841][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 92.496045][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 92.496218][ C1] __do_softirq+0x1f8/0x5df [ 92.496401][ C1] irq_exit_rcu+0x97/0xc0 [ 92.496577][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 92.496786][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 92.497026][ C1] default_idle+0xf/0x20 [ 92.497209][ C1] default_idle_call+0x6d/0xb0 [ 92.497382][ C1] cpuidle_idle_call+0x1f4/0x280 [ 92.497567][ C1] do_idle+0xf9/0x160 [ 92.497712][ C1] cpu_startup_entry+0x54/0x60 [ 92.497882][ C1] start_secondary+0x21c/0x2b0 [ 92.498069][ C1] common_startup_64+0x12c/0x138 [ 92.498243][ C1] INITIAL USE at: [ 92.498349][ C1] __lock_acquire+0x797/0x1570 [ 92.498522][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.498696][ C1] _raw_spin_lock_bh+0x38/0x50 [ 92.498872][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 92.499124][ C1] dev_set_mac_address+0x28a/0x410 [ 92.499296][ C1] dev_set_mac_address_user+0x31/0x50 [ 92.499467][ C1] do_setlink+0x17b4/0x21e0 [ 92.499641][ C1] rtnl_setlink+0x1f7/0x310 [ 92.499813][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 92.500000][ C1] netlink_rcv_skb+0x130/0x360 [ 92.500179][ C1] netlink_unicast+0x449/0x710 [ 92.500358][ C1] netlink_sendmsg+0x723/0xbe0 [ 92.500531][ C1] __sys_sendto+0x37d/0x410 [ 92.500708][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 92.500993][ C1] do_syscall_64+0xc6/0x1e0 [ 92.501180][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 92.501388][ C1] } [ 92.501458][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 92.501818][ C1] ... acquired at: [ 92.501944][ C1] mark_lock+0x28d/0x3e0 [ 92.502090][ C1] mark_usage+0xd9/0x2a0 [ 92.502317][ C1] __lock_acquire+0x797/0x1570 [ 92.502457][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.502605][ C1] _raw_spin_lock+0x30/0x40 [ 92.502748][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.503088][ C1] call_timer_fn+0x13b/0x230 [ 92.503228][ C1] __run_timers+0x545/0x810 [ 92.503378][ C1] timer_expire_remote+0x9b/0xe0 [ 92.503515][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 92.503664][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 92.503891][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 92.504046][ C1] __do_softirq+0x1f8/0x5df [ 92.504193][ C1] irq_exit_rcu+0x97/0xc0 [ 92.504339][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 92.504603][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 92.504783][ C1] default_idle+0xf/0x20 [ 92.504924][ C1] default_idle_call+0x6d/0xb0 [ 92.505075][ C1] cpuidle_idle_call+0x1f4/0x280 [ 92.505293][ C1] do_idle+0xf9/0x160 [ 92.505409][ C1] cpu_startup_entry+0x54/0x60 [ 92.505557][ C1] start_secondary+0x21c/0x2b0 [ 92.505706][ C1] common_startup_64+0x12c/0x138 [ 92.505939][ C1] [ 92.506011][ C1] [ 92.506011][ C1] stack backtrace: [ 92.506184][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 92.506406][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 92.506821][ C1] Call Trace: [ 92.506925][ C1] [ 92.507012][ C1] dump_stack_lvl+0x82/0xd0 [ 92.507180][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 92.507447][ C1] ? common_startup_64+0x12c/0x138 [ 92.507620][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 92.507795][ C1] ? __pfx_usage_skip+0x10/0x10 [ 92.507950][ C1] ? __pfx_usage_match+0x10/0x10 [ 92.508198][ C1] ? arch_stack_walk+0x8c/0xf0 [ 92.508336][ C1] mark_lock_irq+0x4cd/0xa10 [ 92.508485][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 92.508627][ C1] ? stack_trace_save+0x94/0xd0 [ 92.508860][ C1] ? add_chain_cache+0x248/0x8b0 [ 92.509028][ C1] ? save_trace+0x8f/0x5b0 [ 92.509167][ C1] mark_lock+0x28d/0x3e0 [ 92.509290][ C1] mark_usage+0xd9/0x2a0 [ 92.509395][ C1] __lock_acquire+0x797/0x1570 [ 92.509710][ C1] ? __lock_acquire+0xaf0/0x1570 [ 92.509859][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 92.510140][ C1] lock_acquire.part.0+0xeb/0x330 [ 92.510370][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.510589][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 92.510731][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 92.510869][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.511177][ C1] ? lock_acquire+0x32/0xc0 [ 92.511328][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.511549][ C1] _raw_spin_lock+0x30/0x40 [ 92.511688][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.512008][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 92.512225][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 92.512479][ C1] call_timer_fn+0x13b/0x230 [ 92.512702][ C1] ? call_timer_fn+0xe8/0x230 [ 92.512854][ C1] ? call_timer_fn+0xe8/0x230 [ 92.513031][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 92.513172][ C1] ? mark_lock+0x38/0x3e0 [ 92.513281][ C1] __run_timers+0x545/0x810 [ 92.513497][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 92.513751][ C1] ? __pfx___run_timers+0x10/0x10 [ 92.513896][ C1] ? __lock_release+0x103/0x460 [ 92.514047][ C1] ? do_raw_spin_lock+0x131/0x270 [ 92.514263][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 92.514402][ C1] ? lock_acquire+0x32/0xc0 [ 92.514539][ C1] ? timer_expire_remote+0x93/0xe0 [ 92.514679][ C1] timer_expire_remote+0x9b/0xe0 [ 92.514902][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 92.515048][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 92.515220][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 92.515359][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 92.515574][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 92.515718][ C1] __do_softirq+0x1f8/0x5df [ 92.515857][ C1] irq_exit_rcu+0x97/0xc0 [ 92.515974][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 92.516191][ C1] [ 92.516262][ C1] [ 92.516331][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 92.516499][ C1] RIP: 0010:default_idle+0xf/0x20 [ 92.516645][ 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 [ 92.517263][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 92.517437][ C1] RAX: 00000000000d904b RBX: 1ffff92000029fc1 RCX: ffffffffa310f9e5 [ 92.517731][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa0aaa4a4 [ 92.517940][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f1709c [ 92.518154][ C1] R10: ffff88802f8b84e3 R11: ffff88802f8ad9b0 R12: 0000000000000000 [ 92.518439][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 92.518646][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 92.518786][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 92.519016][ C1] default_idle_call+0x6d/0xb0 [ 92.519172][ C1] cpuidle_idle_call+0x1f4/0x280 [ 92.519314][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 92.519461][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 92.519698][ C1] do_idle+0xf9/0x160 [ 92.519807][ C1] cpu_startup_entry+0x54/0x60 [ 92.519949][ C1] start_secondary+0x21c/0x2b0 [ 92.520103][ C1] ? __pfx_start_secondary+0x10/0x10 [ 92.520240][ C1] common_startup_64+0x12c/0x138 [ 92.520389][ C1] [ 101.608016][ T585] br0: entered allmulticast mode [ 107.721475][ T600] br0: left allmulticast mode [ 115.637587][ T670] br0: left promiscuous mode [ 115.950831][ T675] br0: port 1(veth1) entered disabled state [ 116.501460][ T680] veth1: left allmulticast mode [ 116.501681][ T680] veth1: left promiscuous mode [ 116.501949][ T680] br0: port 1(veth1) entered disabled state