[ 25.097864][ T260] ip (260) used greatest stack depth: 23424 bytes left [ 28.911258][ T295] br0: port 1(veth1) entered blocking state [ 28.911682][ T295] br0: port 1(veth1) entered disabled state [ 28.912532][ T295] veth1: entered allmulticast mode [ 28.914513][ T295] veth1: entered promiscuous mode [ 29.032926][ T297] br0: port 2(veth3) entered blocking state [ 29.033198][ T297] br0: port 2(veth3) entered disabled state [ 29.033457][ T297] veth3: entered allmulticast mode [ 29.035328][ T297] veth3: entered promiscuous mode [ 29.403322][ T50] br0: port 1(veth1) entered blocking state [ 29.403669][ T50] br0: port 1(veth1) entered forwarding state [ 29.521398][ T50] br0: port 2(veth3) entered blocking state [ 29.521757][ T50] br0: port 2(veth3) entered forwarding state [ 44.840824][ C2] [ 44.840954][ C2] ======================================================== [ 44.841186][ C2] WARNING: possible irq lock inversion dependency detected [ 44.841411][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 44.841563][ C2] -------------------------------------------------------- [ 44.841792][ C2] swapper/2/0 just changed the state of lock: [ 44.841984][ C2] ffff88800838ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.842355][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.842588][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 44.842593][ C2] [ 44.842593][ C2] [ 44.842593][ C2] and interrupts could create inverse lock ordering between them. [ 44.842593][ C2] [ 44.843134][ C2] [ 44.843134][ C2] other info that might help us debug this: [ 44.843352][ C2] Chain exists of: [ 44.843352][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.843352][ C2] [ 44.843693][ C2] Possible interrupt unsafe locking scenario: [ 44.843693][ C2] [ 44.843920][ C2] CPU0 CPU1 [ 44.844077][ C2] ---- ---- [ 44.844231][ C2] lock(&p->alloc_lock); [ 44.844344][ C2] local_irq_disable(); [ 44.844529][ C2] lock(&br->lock); [ 44.844721][ C2] lock(lweventlist_lock); [ 44.844903][ C2] [ 44.845019][ C2] lock(&br->lock); [ 44.845130][ C2] [ 44.845130][ C2] *** DEADLOCK *** [ 44.845130][ C2] [ 44.845349][ C2] 1 lock held by swapper/2/0: [ 44.845507][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.845829][ C2] [ 44.845829][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 44.846084][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.846239][ C2] HARDIRQ-ON-W at: [ 44.846357][ C2] __lock_acquire+0x797/0x1570 [ 44.846550][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.846744][ C2] _raw_spin_lock+0x30/0x40 [ 44.846935][ C2] set_mems_allowed+0x1d/0x210 [ 44.847123][ C2] kernel_init_freeable+0x72/0x310 [ 44.847326][ C2] kernel_init+0x20/0x200 [ 44.847517][ C2] ret_from_fork+0x31/0x70 [ 44.847714][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.847905][ C2] SOFTIRQ-ON-W at: [ 44.848018][ C2] __lock_acquire+0x797/0x1570 [ 44.848203][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.848398][ C2] _raw_spin_lock+0x30/0x40 [ 44.848586][ C2] set_mems_allowed+0x1d/0x210 [ 44.848774][ C2] kernel_init_freeable+0x72/0x310 [ 44.848962][ C2] kernel_init+0x20/0x200 [ 44.849149][ C2] ret_from_fork+0x31/0x70 [ 44.849336][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.849521][ C2] INITIAL USE at: [ 44.849635][ C2] __lock_acquire+0x797/0x1570 [ 44.849827][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.850015][ C2] _raw_spin_lock+0x30/0x40 [ 44.850220][ C2] set_mems_allowed+0x1d/0x210 [ 44.850412][ C2] kernel_init_freeable+0x72/0x310 [ 44.850594][ C2] kernel_init+0x20/0x200 [ 44.850783][ C2] ret_from_fork+0x31/0x70 [ 44.850983][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.851168][ C2] } [ 44.851247][ C2] ... key at: [] __key.387+0x0/0x40 [ 44.851481][ C2] ... acquired at: [ 44.851607][ C2] __lock_acquire+0xaf0/0x1570 [ 44.851763][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.851912][ C2] _raw_spin_lock+0x30/0x40 [ 44.852065][ C2] __get_task_comm+0x27/0x70 [ 44.852219][ C2] ref_tracker_alloc+0x2ee/0x490 [ 44.852369][ C2] linkwatch_fire_event+0x196/0x200 [ 44.852518][ C2] veth_newlink+0x367/0x830 [veth] [ 44.852690][ C2] rtnl_newlink_create+0x341/0x850 [ 44.852842][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.852992][ C2] rtnl_newlink+0x63/0xa0 [ 44.853140][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.853287][ C2] netlink_rcv_skb+0x130/0x360 [ 44.853443][ C2] netlink_unicast+0x449/0x710 [ 44.853598][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.853750][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.853903][ C2] ___sys_sendmsg+0xee/0x170 [ 44.854055][ C2] __sys_sendmsg+0xcd/0x170 [ 44.854203][ C2] do_syscall_64+0xc6/0x1e0 [ 44.854356][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.854548][ C2] [ 44.854625][ C2] -> (lweventlist_lock){....}-{2:2} { [ 44.854785][ C2] INITIAL USE at: [ 44.854905][ C2] __lock_acquire+0x797/0x1570 [ 44.855091][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.855278][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.855465][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 44.855650][ C2] rtnl_getlink+0x4c9/0x970 [ 44.855840][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.856024][ C2] netlink_rcv_skb+0x130/0x360 [ 44.856206][ C2] netlink_unicast+0x449/0x710 [ 44.856419][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.856591][ C2] __sys_sendto+0x37d/0x410 [ 44.856770][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.856946][ C2] do_syscall_64+0xc6/0x1e0 [ 44.857116][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.857321][ C2] } [ 44.857389][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.857596][ C2] ... acquired at: [ 44.857697][ C2] __lock_acquire+0xaf0/0x1570 [ 44.857835][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.857980][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.858117][ C2] linkwatch_fire_event+0x74/0x200 [ 44.858254][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.858470][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.858676][ C2] dev_set_mac_address+0x28a/0x410 [ 44.858814][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.858952][ C2] do_setlink+0x17b4/0x21e0 [ 44.859093][ C2] rtnl_setlink+0x1f7/0x310 [ 44.859232][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.859368][ C2] netlink_rcv_skb+0x130/0x360 [ 44.859503][ C2] netlink_unicast+0x449/0x710 [ 44.859642][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.859781][ C2] __sys_sendto+0x37d/0x410 [ 44.859916][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.860053][ C2] do_syscall_64+0xc6/0x1e0 [ 44.860210][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.860390][ C2] [ 44.860458][ C2] -> (&br->lock){+.-.}-{2:2} { [ 44.860604][ C2] HARDIRQ-ON-W at: [ 44.860707][ C2] __lock_acquire+0x797/0x1570 [ 44.860879][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.861051][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.861222][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.861463][ C2] dev_set_mac_address+0x28a/0x410 [ 44.861641][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.861809][ C2] do_setlink+0x17b4/0x21e0 [ 44.861979][ C2] rtnl_setlink+0x1f7/0x310 [ 44.862161][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.862335][ C2] netlink_rcv_skb+0x130/0x360 [ 44.862505][ C2] netlink_unicast+0x449/0x710 [ 44.862690][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.862863][ C2] __sys_sendto+0x37d/0x410 [ 44.863041][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.863215][ C2] do_syscall_64+0xc6/0x1e0 [ 44.863388][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.863598][ C2] IN-SOFTIRQ-W at: [ 44.863702][ C2] __lock_acquire+0x797/0x1570 [ 44.863885][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.864071][ C2] _raw_spin_lock+0x30/0x40 [ 44.864241][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.864488][ C2] call_timer_fn+0x13b/0x230 [ 44.864672][ C2] __run_timers+0x545/0x810 [ 44.864841][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.865017][ C2] __do_softirq+0x1f8/0x5df [ 44.865190][ C2] irq_exit_rcu+0x97/0xc0 [ 44.865370][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.865577][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.865798][ C2] default_idle+0xf/0x20 [ 44.865973][ C2] default_idle_call+0x6d/0xb0 [ 44.866145][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.866317][ C2] do_idle+0xf9/0x160 [ 44.866461][ C2] cpu_startup_entry+0x54/0x60 [ 44.866637][ C2] start_secondary+0x21c/0x2b0 [ 44.866808][ C2] common_startup_64+0x12c/0x138 [ 44.866979][ C2] INITIAL USE at: [ 44.867081][ C2] __lock_acquire+0x797/0x1570 [ 44.867256][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.867437][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.867612][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.867855][ C2] dev_set_mac_address+0x28a/0x410 [ 44.868025][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.868207][ C2] do_setlink+0x17b4/0x21e0 [ 44.868384][ C2] rtnl_setlink+0x1f7/0x310 [ 44.868557][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.868740][ C2] netlink_rcv_skb+0x130/0x360 [ 44.868914][ C2] netlink_unicast+0x449/0x710 [ 44.869082][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.869255][ C2] __sys_sendto+0x37d/0x410 [ 44.869436][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.869615][ C2] do_syscall_64+0xc6/0x1e0 [ 44.869785][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.869991][ C2] } [ 44.870061][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.870346][ C2] ... acquired at: [ 44.870448][ C2] mark_lock+0x28d/0x3e0 [ 44.870588][ C2] mark_usage+0xd9/0x2a0 [ 44.870728][ C2] __lock_acquire+0x797/0x1570 [ 44.870862][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.870998][ C2] _raw_spin_lock+0x30/0x40 [ 44.871133][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.871342][ C2] call_timer_fn+0x13b/0x230 [ 44.871477][ C2] __run_timers+0x545/0x810 [ 44.871613][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.871751][ C2] __do_softirq+0x1f8/0x5df [ 44.871893][ C2] irq_exit_rcu+0x97/0xc0 [ 44.872042][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.872223][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.872398][ C2] default_idle+0xf/0x20 [ 44.872533][ C2] default_idle_call+0x6d/0xb0 [ 44.872678][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.872812][ C2] do_idle+0xf9/0x160 [ 44.872913][ C2] cpu_startup_entry+0x54/0x60 [ 44.873050][ C2] start_secondary+0x21c/0x2b0 [ 44.873190][ C2] common_startup_64+0x12c/0x138 [ 44.873323][ C2] [ 44.873391][ C2] [ 44.873391][ C2] stack backtrace: [ 44.873560][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 44.873769][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.874065][ C2] Call Trace: [ 44.874169][ C2] [ 44.874245][ C2] dump_stack_lvl+0x82/0xd0 [ 44.874387][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.874554][ C2] ? common_startup_64+0x12c/0x138 [ 44.874693][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.874864][ C2] ? __pfx_usage_skip+0x10/0x10 [ 44.874998][ C2] ? __pfx_usage_match+0x10/0x10 [ 44.875130][ C2] ? arch_stack_walk+0x8c/0xf0 [ 44.875265][ C2] mark_lock_irq+0x4cd/0xa10 [ 44.875404][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.875540][ C2] ? stack_trace_save+0x94/0xd0 [ 44.875678][ C2] ? add_chain_cache+0x248/0x8b0 [ 44.875820][ C2] ? save_trace+0x8f/0x5b0 [ 44.876037][ C2] mark_lock+0x28d/0x3e0 [ 44.876141][ C2] mark_usage+0xd9/0x2a0 [ 44.876250][ C2] __lock_acquire+0x797/0x1570 [ 44.876385][ C2] ? __lock_acquire+0xaf0/0x1570 [ 44.876521][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.876851][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.876986][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.877194][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.877334][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 44.877472][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.877684][ C2] ? lock_acquire+0x32/0xc0 [ 44.877818][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.878116][ C2] _raw_spin_lock+0x30/0x40 [ 44.878252][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.878454][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.878659][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.878971][ C2] call_timer_fn+0x13b/0x230 [ 44.879105][ C2] ? call_timer_fn+0xe8/0x230 [ 44.879244][ C2] ? call_timer_fn+0xe8/0x230 [ 44.879381][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 44.879597][ C2] ? mark_lock+0x38/0x3e0 [ 44.879707][ C2] __run_timers+0x545/0x810 [ 44.879846][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.880098][ C2] ? __pfx___run_timers+0x10/0x10 [ 44.880318][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.880454][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.880602][ C2] ? lock_acquire+0x32/0xc0 [ 44.880741][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 44.880978][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.881116][ C2] __do_softirq+0x1f8/0x5df [ 44.881253][ C2] irq_exit_rcu+0x97/0xc0 [ 44.881356][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.881574][ C2] [ 44.881649][ C2] [ 44.881728][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.881901][ C2] RIP: 0010:default_idle+0xf/0x20 [ 44.882059][ C2] 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 [ 44.882623][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000242 [ 44.882797][ C2] RAX: 0000000000147b07 RBX: 1ffff9200002bfc1 RCX: ffffffff9670f9e5 [ 44.883083][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff940aa4a4 [ 44.883290][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f2709c [ 44.883493][ C2] R10: ffff88802f9384e3 R11: ffff88802f93dc80 R12: 0000000000000000 [ 44.883778][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 44.883981][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.884117][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 44.884339][ C2] default_idle_call+0x6d/0xb0 [ 44.884472][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.884610][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.884753][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.884967][ C2] do_idle+0xf9/0x160 [ 44.885068][ C2] cpu_startup_entry+0x54/0x60 [ 44.885201][ C2] start_secondary+0x21c/0x2b0 [ 44.885336][ C2] ? __pfx_start_secondary+0x10/0x10 [ 44.885476][ C2] common_startup_64+0x12c/0x138 [ 44.885693][ C2] [ 48.706569][ T535] br0: port 3(veth5) entered blocking state [ 48.707471][ T535] br0: port 3(veth5) entered disabled state [ 48.707892][ T535] veth5: entered allmulticast mode [ 48.709368][ T535] veth5: entered promiscuous mode [ 48.931531][ T540] veth5: left allmulticast mode [ 48.932418][ T540] veth5: left promiscuous mode [ 48.932782][ T540] br0: port 3(veth5) entered disabled state [ 49.975022][ T555] br0: port 3(veth5) entered blocking state [ 49.975254][ T555] br0: port 3(veth5) entered disabled state [ 49.975472][ T555] veth5: entered allmulticast mode [ 49.977615][ T555] veth5: entered promiscuous mode [ 49.977892][ T555] br0: adding interface veth5 with same address as a received packet (addr:de:ad:be:ef:42:00, vlan:0) [ 50.178498][ T560] veth5: left allmulticast mode [ 50.178670][ T560] veth5: left promiscuous mode [ 50.178923][ T560] br0: port 3(veth5) entered disabled state [ 103.168171][ T1292] br0: port 3(veth5) entered blocking state [ 103.168382][ T1292] br0: port 3(veth5) entered disabled state [ 103.168587][ T1292] veth5: entered allmulticast mode [ 103.170109][ T1292] veth5: entered promiscuous mode [ 103.373160][ T1298] br0: port 3(veth5) entered disabled state [ 103.486098][ T1299] br0: port 2(veth3) entered disabled state [ 103.582615][ T1300] br0: port 1(veth1) entered disabled state [ 103.716735][ T1301] veth5: left allmulticast mode [ 103.717039][ T1301] veth5: left promiscuous mode [ 103.717398][ T1301] br0: port 3(veth5) entered disabled state [ 103.719258][ T1301] veth3: left allmulticast mode [ 103.719427][ T1301] veth3: left promiscuous mode [ 103.719681][ T1301] br0: port 2(veth3) entered disabled state [ 103.720520][ T1301] veth1: left allmulticast mode [ 103.720679][ T1301] veth1: left promiscuous mode [ 103.720941][ T1301] br0: port 1(veth1) entered disabled state