[ 28.924795][ T286] br1: port 1(veth1) entered blocking state [ 28.925191][ T286] br1: port 1(veth1) entered disabled state [ 28.926170][ T286] veth1: entered allmulticast mode [ 28.928296][ T286] veth1: entered promiscuous mode [ 29.181059][ T289] br1: port 2(veth2) entered blocking state [ 29.181357][ T289] br1: port 2(veth2) entered disabled state [ 29.181598][ T289] veth2: entered allmulticast mode [ 29.184851][ T289] veth2: entered promiscuous mode [ 29.439390][ T291] br1: port 2(veth2) entered blocking state [ 29.439769][ T291] br1: port 2(veth2) entered forwarding state [ 29.440609][ T291] br1: port 1(veth1) entered blocking state [ 29.440906][ T291] br1: port 1(veth1) entered forwarding state [ 36.513274][ T316] GACT probability NOT on [ 44.861329][ C2] [ 44.861443][ C2] ======================================================== [ 44.861662][ C2] WARNING: possible irq lock inversion dependency detected [ 44.861875][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 44.862011][ C2] -------------------------------------------------------- [ 44.862219][ C2] swapper/2/0 just changed the state of lock: [ 44.862388][ C2] ffff888006662c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.862742][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.862954][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 44.862958][ C2] [ 44.862958][ C2] [ 44.862958][ C2] and interrupts could create inverse lock ordering between them. [ 44.862958][ C2] [ 44.863459][ C2] [ 44.863459][ C2] other info that might help us debug this: [ 44.863657][ C2] Chain exists of: [ 44.863657][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.863657][ C2] [ 44.863970][ C2] Possible interrupt unsafe locking scenario: [ 44.863970][ C2] [ 44.864170][ C2] CPU0 CPU1 [ 44.864320][ C2] ---- ---- [ 44.864458][ C2] lock(&p->alloc_lock); [ 44.864563][ C2] local_irq_disable(); [ 44.864730][ C2] lock(&br->lock); [ 44.864941][ C2] lock(lweventlist_lock); [ 44.865110][ C2] [ 44.865215][ C2] lock(&br->lock); [ 44.865345][ C2] [ 44.865345][ C2] *** DEADLOCK *** [ 44.865345][ C2] [ 44.865547][ C2] 1 lock held by swapper/2/0: [ 44.865691][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.865973][ C2] [ 44.865973][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 44.866236][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.866379][ C2] HARDIRQ-ON-W at: [ 44.866484][ C2] __lock_acquire+0x797/0x1570 [ 44.866679][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.866853][ C2] _raw_spin_lock+0x30/0x40 [ 44.867081][ C2] set_mems_allowed+0x1d/0x210 [ 44.867270][ C2] kernel_init_freeable+0x72/0x310 [ 44.867488][ C2] kernel_init+0x20/0x200 [ 44.867676][ C2] ret_from_fork+0x31/0x70 [ 44.867887][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.868068][ C2] SOFTIRQ-ON-W at: [ 44.868176][ C2] __lock_acquire+0x797/0x1570 [ 44.868363][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.868537][ C2] _raw_spin_lock+0x30/0x40 [ 44.868728][ C2] set_mems_allowed+0x1d/0x210 [ 44.868912][ C2] kernel_init_freeable+0x72/0x310 [ 44.869088][ C2] kernel_init+0x20/0x200 [ 44.869287][ C2] ret_from_fork+0x31/0x70 [ 44.869472][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.869652][ C2] INITIAL USE at: [ 44.869757][ C2] __lock_acquire+0x797/0x1570 [ 44.869935][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.870123][ C2] _raw_spin_lock+0x30/0x40 [ 44.870314][ C2] set_mems_allowed+0x1d/0x210 [ 44.870492][ C2] kernel_init_freeable+0x72/0x310 [ 44.870705][ C2] kernel_init+0x20/0x200 [ 44.870884][ C2] ret_from_fork+0x31/0x70 [ 44.871069][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.871246][ C2] } [ 44.871317][ C2] ... key at: [] __key.387+0x0/0x40 [ 44.871529][ C2] ... acquired at: [ 44.871639][ C2] __lock_acquire+0xaf0/0x1570 [ 44.871781][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.871924][ C2] _raw_spin_lock+0x30/0x40 [ 44.872065][ C2] __get_task_comm+0x27/0x70 [ 44.872207][ C2] ref_tracker_alloc+0x2ee/0x490 [ 44.872345][ C2] linkwatch_fire_event+0x196/0x200 [ 44.872486][ C2] veth_newlink+0x367/0x830 [veth] [ 44.872629][ C2] rtnl_newlink_create+0x341/0x850 [ 44.872805][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.872957][ C2] rtnl_newlink+0x63/0xa0 [ 44.873098][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.873257][ C2] netlink_rcv_skb+0x130/0x360 [ 44.873427][ C2] netlink_unicast+0x449/0x710 [ 44.873570][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.873715][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.873861][ C2] ___sys_sendmsg+0xee/0x170 [ 44.874013][ C2] __sys_sendmsg+0xcd/0x170 [ 44.874187][ C2] do_syscall_64+0xc6/0x1e0 [ 44.874336][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.874530][ C2] [ 44.874623][ C2] -> (lweventlist_lock){....}-{2:2} { [ 44.874767][ C2] INITIAL USE at: [ 44.874877][ C2] __lock_acquire+0x797/0x1570 [ 44.875067][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.875246][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.875435][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 44.875617][ C2] rtnl_getlink+0x4c9/0x970 [ 44.875792][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.875967][ C2] netlink_rcv_skb+0x130/0x360 [ 44.876140][ C2] netlink_unicast+0x449/0x710 [ 44.876320][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.876493][ C2] __sys_sendto+0x37d/0x410 [ 44.876665][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.876847][ C2] do_syscall_64+0xc6/0x1e0 [ 44.877033][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.877241][ C2] } [ 44.877311][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.877522][ C2] ... acquired at: [ 44.877633][ C2] __lock_acquire+0xaf0/0x1570 [ 44.877773][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.877911][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.878075][ C2] linkwatch_fire_event+0x74/0x200 [ 44.878231][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.878454][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.878664][ C2] dev_set_mac_address+0x28a/0x410 [ 44.878805][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.878951][ C2] do_setlink+0x17b4/0x21e0 [ 44.879089][ C2] rtnl_setlink+0x1f7/0x310 [ 44.879226][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.879370][ C2] netlink_rcv_skb+0x130/0x360 [ 44.879510][ C2] netlink_unicast+0x449/0x710 [ 44.879646][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.879790][ C2] __sys_sendto+0x37d/0x410 [ 44.879930][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.880077][ C2] do_syscall_64+0xc6/0x1e0 [ 44.880214][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.880384][ C2] [ 44.880454][ C2] -> (&br->lock){+.-.}-{2:2} { [ 44.880603][ C2] HARDIRQ-ON-W at: [ 44.880720][ C2] __lock_acquire+0x797/0x1570 [ 44.880895][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.881087][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.881345][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.881594][ C2] dev_set_mac_address+0x28a/0x410 [ 44.881771][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.881952][ C2] do_setlink+0x17b4/0x21e0 [ 44.882205][ C2] rtnl_setlink+0x1f7/0x310 [ 44.882396][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.882568][ C2] netlink_rcv_skb+0x130/0x360 [ 44.882829][ C2] netlink_unicast+0x449/0x710 [ 44.883011][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.883184][ C2] __sys_sendto+0x37d/0x410 [ 44.883444][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.883621][ C2] do_syscall_64+0xc6/0x1e0 [ 44.883805][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.884010][ C2] IN-SOFTIRQ-W at: [ 44.884200][ C2] __lock_acquire+0x797/0x1570 [ 44.884374][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.884573][ C2] _raw_spin_lock+0x30/0x40 [ 44.884828][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.885082][ C2] call_timer_fn+0x13b/0x230 [ 44.885267][ C2] __run_timers+0x545/0x810 [ 44.885438][ C2] timer_expire_remote+0x9b/0xe0 [ 44.885774][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.885945][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.886115][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.886386][ C2] __do_softirq+0x1f8/0x5df [ 44.886559][ C2] irq_exit_rcu+0x97/0xc0 [ 44.886738][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.886947][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.887153][ C2] default_idle+0xf/0x20 [ 44.887326][ C2] default_idle_call+0x6d/0xb0 [ 44.887586][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.887765][ C2] do_idle+0xf9/0x160 [ 44.887905][ C2] cpu_startup_entry+0x54/0x60 [ 44.888086][ C2] start_secondary+0x21c/0x2b0 [ 44.888348][ C2] common_startup_64+0x12c/0x138 [ 44.888544][ C2] INITIAL USE at: [ 44.888650][ C2] __lock_acquire+0x797/0x1570 [ 44.888829][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.889006][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.889196][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.889440][ C2] dev_set_mac_address+0x28a/0x410 [ 44.889705][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.889882][ C2] do_setlink+0x17b4/0x21e0 [ 44.890059][ C2] rtnl_setlink+0x1f7/0x310 [ 44.890329][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.890508][ C2] netlink_rcv_skb+0x130/0x360 [ 44.890697][ C2] netlink_unicast+0x449/0x710 [ 44.890872][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.891045][ C2] __sys_sendto+0x37d/0x410 [ 44.891216][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.891395][ C2] do_syscall_64+0xc6/0x1e0 [ 44.891656][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.891868][ C2] } [ 44.891939][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.892222][ C2] ... acquired at: [ 44.892414][ C2] mark_lock+0x28d/0x3e0 [ 44.892576][ C2] mark_usage+0xd9/0x2a0 [ 44.892722][ C2] __lock_acquire+0x797/0x1570 [ 44.892861][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.893093][ C2] _raw_spin_lock+0x30/0x40 [ 44.893240][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.893458][ C2] call_timer_fn+0x13b/0x230 [ 44.893594][ C2] __run_timers+0x545/0x810 [ 44.893820][ C2] timer_expire_remote+0x9b/0xe0 [ 44.893958][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.894109][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.894248][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.894473][ C2] __do_softirq+0x1f8/0x5df [ 44.894610][ C2] irq_exit_rcu+0x97/0xc0 [ 44.894747][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.894924][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.895174][ C2] default_idle+0xf/0x20 [ 44.895311][ C2] default_idle_call+0x6d/0xb0 [ 44.895454][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.895593][ C2] do_idle+0xf9/0x160 [ 44.895697][ C2] cpu_startup_entry+0x54/0x60 [ 44.895924][ C2] start_secondary+0x21c/0x2b0 [ 44.896063][ C2] common_startup_64+0x12c/0x138 [ 44.896201][ C2] [ 44.896270][ C2] [ 44.896270][ C2] stack backtrace: [ 44.896606][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 44.896818][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.897129][ C2] Call Trace: [ 44.897336][ C2] [ 44.897409][ C2] dump_stack_lvl+0x82/0xd0 [ 44.897551][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.897752][ C2] ? common_startup_64+0x12c/0x138 [ 44.897891][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.898066][ C2] ? __pfx_usage_skip+0x10/0x10 [ 44.898223][ C2] ? __pfx_usage_match+0x10/0x10 [ 44.898362][ C2] ? arch_stack_walk+0x8c/0xf0 [ 44.898592][ C2] mark_lock_irq+0x4cd/0xa10 [ 44.898730][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.898893][ C2] ? stack_trace_save+0x94/0xd0 [ 44.899046][ C2] ? add_chain_cache+0x248/0x8b0 [ 44.899196][ C2] ? save_trace+0x8f/0x5b0 [ 44.899441][ C2] mark_lock+0x28d/0x3e0 [ 44.899551][ C2] mark_usage+0xd9/0x2a0 [ 44.899662][ C2] __lock_acquire+0x797/0x1570 [ 44.899801][ C2] ? __lock_acquire+0xaf0/0x1570 [ 44.899957][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.900216][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.900367][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.900586][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.900891][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 44.901035][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.901262][ C2] ? lock_acquire+0x32/0xc0 [ 44.901399][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.901698][ C2] _raw_spin_lock+0x30/0x40 [ 44.901864][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.902073][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.902401][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.902650][ C2] call_timer_fn+0x13b/0x230 [ 44.902788][ C2] ? call_timer_fn+0xe8/0x230 [ 44.902944][ C2] ? call_timer_fn+0xe8/0x230 [ 44.903164][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 44.903326][ C2] ? mark_lock+0x38/0x3e0 [ 44.903435][ C2] __run_timers+0x545/0x810 [ 44.903582][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.903940][ C2] ? __pfx___run_timers+0x10/0x10 [ 44.904076][ C2] ? __lock_release+0x103/0x460 [ 44.904213][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.904374][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.904619][ C2] ? lock_acquire+0x32/0xc0 [ 44.904780][ C2] ? timer_expire_remote+0x93/0xe0 [ 44.904918][ C2] timer_expire_remote+0x9b/0xe0 [ 44.905076][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.905220][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.905495][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.905634][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.905803][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.905943][ C2] __do_softirq+0x1f8/0x5df [ 44.906086][ C2] irq_exit_rcu+0x97/0xc0 [ 44.906190][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.906329][ C2] [ 44.906399][ C2] [ 44.906469][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.906720][ C2] RIP: 0010:default_idle+0xf/0x20 [ 44.906873][ 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 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 [ 44.907445][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 44.907626][ C2] RAX: 0000000000113c8d RBX: 1ffff9200002bfc1 RCX: ffffffffb870e9d5 [ 44.907831][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb60aa4a4 [ 44.908198][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 44.908402][ C2] R10: ffff8880361384e3 R11: 1ffff110003a928c R12: 0000000000000000 [ 44.908607][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 44.908903][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.909045][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 44.909186][ C2] default_idle_call+0x6d/0xb0 [ 44.909323][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.909540][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.909678][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.909819][ C2] do_idle+0xf9/0x160 [ 44.909929][ C2] cpu_startup_entry+0x54/0x60 [ 44.910147][ C2] start_secondary+0x21c/0x2b0 [ 44.910284][ C2] ? __pfx_start_secondary+0x10/0x10 [ 44.910423][ C2] common_startup_64+0x12c/0x138 [ 44.910563][ C2] [ 52.166261][ T550] br1: port 2(veth2) entered disabled state [ 52.166778][ T550] br1: port 1(veth1) entered disabled state [ 52.369669][ T552] veth2: left allmulticast mode [ 52.369842][ T552] veth2: left promiscuous mode [ 52.370102][ T552] br1: port 2(veth2) entered disabled state [ 52.560034][ T554] veth1: left allmulticast mode [ 52.560221][ T554] veth1: left promiscuous mode [ 52.560466][ T554] br1: port 1(veth1) entered disabled state