[ 27.724602][ T283] br0: port 1(veth1) entered blocking state [ 27.725638][ T283] br0: port 1(veth1) entered disabled state [ 27.725990][ T283] veth1: entered allmulticast mode [ 27.728071][ T283] veth1: entered promiscuous mode [ 27.846230][ T285] br0: port 2(veth2) entered blocking state [ 27.846486][ T285] br0: port 2(veth2) entered disabled state [ 27.846753][ T285] veth2: entered allmulticast mode [ 27.848573][ T285] veth2: entered promiscuous mode [ 28.105468][ T62] br0: port 1(veth1) entered blocking state [ 28.105938][ T62] br0: port 1(veth1) entered forwarding state [ 38.745166][ T62] br0: port 2(veth2) entered blocking state [ 38.745469][ T62] br0: port 2(veth2) entered forwarding state [ 43.312047][ C1] [ 43.312285][ C1] ======================================================== [ 43.312507][ C1] WARNING: possible irq lock inversion dependency detected [ 43.312725][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 43.312869][ C1] -------------------------------------------------------- [ 43.313082][ C1] swapper/1/0 just changed the state of lock: [ 43.313253][ C1] ffff88800606ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.313630][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.313843][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 43.313847][ C1] [ 43.313847][ C1] [ 43.313847][ C1] and interrupts could create inverse lock ordering between them. [ 43.313847][ C1] [ 43.314355][ C1] [ 43.314355][ C1] other info that might help us debug this: [ 43.314557][ C1] Chain exists of: [ 43.314557][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.314557][ C1] [ 43.314913][ C1] Possible interrupt unsafe locking scenario: [ 43.314913][ C1] [ 43.315131][ C1] CPU0 CPU1 [ 43.315269][ C1] ---- ---- [ 43.315407][ C1] lock(&p->alloc_lock); [ 43.315537][ C1] local_irq_disable(); [ 43.315706][ C1] lock(&br->lock); [ 43.315883][ C1] lock(lweventlist_lock); [ 43.316054][ C1] [ 43.316170][ C1] lock(&br->lock); [ 43.316280][ C1] [ 43.316280][ C1] *** DEADLOCK *** [ 43.316280][ C1] [ 43.316481][ C1] 1 lock held by swapper/1/0: [ 43.316620][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.316910][ C1] [ 43.316910][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 43.317151][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.317294][ C1] HARDIRQ-ON-W at: [ 43.317405][ C1] __lock_acquire+0x797/0x1570 [ 43.317587][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.317759][ C1] _raw_spin_lock+0x30/0x40 [ 43.317946][ C1] set_mems_allowed+0x1d/0x210 [ 43.318121][ C1] kernel_init_freeable+0x72/0x310 [ 43.318297][ C1] kernel_init+0x20/0x200 [ 43.318473][ C1] ret_from_fork+0x31/0x70 [ 43.318651][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.318825][ C1] SOFTIRQ-ON-W at: [ 43.318936][ C1] __lock_acquire+0x797/0x1570 [ 43.319118][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.319295][ C1] _raw_spin_lock+0x30/0x40 [ 43.319470][ C1] set_mems_allowed+0x1d/0x210 [ 43.319643][ C1] kernel_init_freeable+0x72/0x310 [ 43.319818][ C1] kernel_init+0x20/0x200 [ 43.319990][ C1] ret_from_fork+0x31/0x70 [ 43.320165][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.320350][ C1] INITIAL USE at: [ 43.320455][ C1] __lock_acquire+0x797/0x1570 [ 43.320632][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.320806][ C1] _raw_spin_lock+0x30/0x40 [ 43.320980][ C1] set_mems_allowed+0x1d/0x210 [ 43.321157][ C1] kernel_init_freeable+0x72/0x310 [ 43.321330][ C1] kernel_init+0x20/0x200 [ 43.321502][ C1] ret_from_fork+0x31/0x70 [ 43.321678][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.321849][ C1] } [ 43.321927][ C1] ... key at: [] __key.387+0x0/0x40 [ 43.322143][ C1] ... acquired at: [ 43.322255][ C1] __lock_acquire+0xaf0/0x1570 [ 43.322396][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.322534][ C1] _raw_spin_lock+0x30/0x40 [ 43.322672][ C1] __get_task_comm+0x27/0x70 [ 43.322814][ C1] ref_tracker_alloc+0x2ee/0x490 [ 43.322956][ C1] linkwatch_fire_event+0x196/0x200 [ 43.323107][ C1] veth_newlink+0x367/0x830 [veth] [ 43.323249][ C1] rtnl_newlink_create+0x341/0x850 [ 43.323394][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.323537][ C1] rtnl_newlink+0x63/0xa0 [ 43.323676][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.323814][ C1] netlink_rcv_skb+0x130/0x360 [ 43.323958][ C1] netlink_unicast+0x449/0x710 [ 43.324097][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.324242][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.324382][ C1] ___sys_sendmsg+0xee/0x170 [ 43.324527][ C1] __sys_sendmsg+0xcd/0x170 [ 43.324670][ C1] do_syscall_64+0xc6/0x1e0 [ 43.324825][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.324999][ C1] [ 43.325075][ C1] -> (lweventlist_lock){....}-{2:2} { [ 43.325217][ C1] INITIAL USE at: [ 43.325322][ C1] __lock_acquire+0x797/0x1570 [ 43.325494][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.325676][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.325852][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 43.326027][ C1] rtnl_getlink+0x4c9/0x970 [ 43.326201][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.326375][ C1] netlink_rcv_skb+0x130/0x360 [ 43.326548][ C1] netlink_unicast+0x449/0x710 [ 43.326728][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.326897][ C1] __sys_sendto+0x37d/0x410 [ 43.327081][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.327257][ C1] do_syscall_64+0xc6/0x1e0 [ 43.327434][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.327650][ C1] } [ 43.327719][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.327931][ C1] ... acquired at: [ 43.328033][ C1] __lock_acquire+0xaf0/0x1570 [ 43.328177][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.328316][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.328456][ C1] linkwatch_fire_event+0x74/0x200 [ 43.328596][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.328816][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.329026][ C1] dev_set_mac_address+0x28a/0x410 [ 43.329167][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.329304][ C1] do_setlink+0x17b4/0x21e0 [ 43.329446][ C1] rtnl_setlink+0x1f7/0x310 [ 43.329585][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.329722][ C1] netlink_rcv_skb+0x130/0x360 [ 43.329860][ C1] netlink_unicast+0x449/0x710 [ 43.329998][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.330145][ C1] __sys_sendto+0x37d/0x410 [ 43.330283][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.330423][ C1] do_syscall_64+0xc6/0x1e0 [ 43.330560][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.330736][ C1] [ 43.330805][ C1] -> (&br->lock){+.-.}-{2:2} { [ 43.330947][ C1] HARDIRQ-ON-W at: [ 43.331050][ C1] __lock_acquire+0x797/0x1570 [ 43.331229][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.331406][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.331592][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 43.331838][ C1] dev_set_mac_address+0x28a/0x410 [ 43.332015][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.332187][ C1] do_setlink+0x17b4/0x21e0 [ 43.332367][ C1] rtnl_setlink+0x1f7/0x310 [ 43.332546][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.332718][ C1] netlink_rcv_skb+0x130/0x360 [ 43.332889][ C1] netlink_unicast+0x449/0x710 [ 43.333063][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.333242][ C1] __sys_sendto+0x37d/0x410 [ 43.333416][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.333592][ C1] do_syscall_64+0xc6/0x1e0 [ 43.333769][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.333975][ C1] IN-SOFTIRQ-W at: [ 43.334079][ C1] __lock_acquire+0x797/0x1570 [ 43.334254][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.334427][ C1] _raw_spin_lock+0x30/0x40 [ 43.334599][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.334867][ C1] call_timer_fn+0x13b/0x230 [ 43.335046][ C1] __run_timers+0x545/0x810 [ 43.335218][ C1] timer_expire_remote+0x9b/0xe0 [ 43.335390][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.335566][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.335749][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.335931][ C1] __do_softirq+0x1f8/0x5df [ 43.336107][ C1] irq_exit_rcu+0x97/0xc0 [ 43.336279][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.336490][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.336698][ C1] default_idle+0xf/0x20 [ 43.336871][ C1] default_idle_call+0x6d/0xb0 [ 43.337048][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.337220][ C1] do_idle+0xf9/0x160 [ 43.337361][ C1] cpu_startup_entry+0x54/0x60 [ 43.337534][ C1] start_secondary+0x21c/0x2b0 [ 43.337706][ C1] common_startup_64+0x12c/0x138 [ 43.337880][ C1] INITIAL USE at: [ 43.337983][ C1] __lock_acquire+0x797/0x1570 [ 43.338165][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.338336][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.338510][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 43.338751][ C1] dev_set_mac_address+0x28a/0x410 [ 43.338924][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.339100][ C1] do_setlink+0x17b4/0x21e0 [ 43.339280][ C1] rtnl_setlink+0x1f7/0x310 [ 43.339461][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.339633][ C1] netlink_rcv_skb+0x130/0x360 [ 43.339806][ C1] netlink_unicast+0x449/0x710 [ 43.339983][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.340154][ C1] __sys_sendto+0x37d/0x410 [ 43.340337][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.340516][ C1] do_syscall_64+0xc6/0x1e0 [ 43.340694][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.340900][ C1] } [ 43.340969][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.341241][ C1] ... acquired at: [ 43.341344][ C1] mark_lock+0x28d/0x3e0 [ 43.341484][ C1] mark_usage+0xd9/0x2a0 [ 43.341718][ C1] __lock_acquire+0x797/0x1570 [ 43.341855][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.341992][ C1] _raw_spin_lock+0x30/0x40 [ 43.342130][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.342415][ C1] call_timer_fn+0x13b/0x230 [ 43.342551][ C1] __run_timers+0x545/0x810 [ 43.342687][ C1] timer_expire_remote+0x9b/0xe0 [ 43.342823][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.343048][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.343189][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.343325][ C1] __do_softirq+0x1f8/0x5df [ 43.343460][ C1] irq_exit_rcu+0x97/0xc0 [ 43.343761][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.343933][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.344104][ C1] default_idle+0xf/0x20 [ 43.344241][ C1] default_idle_call+0x6d/0xb0 [ 43.344468][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.344604][ C1] do_idle+0xf9/0x160 [ 43.344722][ C1] cpu_startup_entry+0x54/0x60 [ 43.344863][ C1] start_secondary+0x21c/0x2b0 [ 43.345000][ C1] common_startup_64+0x12c/0x138 [ 43.345222][ C1] [ 43.345292][ C1] [ 43.345292][ C1] stack backtrace: [ 43.345544][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 43.345757][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.346165][ C1] Call Trace: [ 43.346271][ C1] [ 43.346345][ C1] dump_stack_lvl+0x82/0xd0 [ 43.346568][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.346739][ C1] ? common_startup_64+0x12c/0x138 [ 43.346881][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.347056][ C1] ? __pfx_usage_skip+0x10/0x10 [ 43.347273][ C1] ? __pfx_usage_match+0x10/0x10 [ 43.347408][ C1] ? arch_stack_walk+0x8c/0xf0 [ 43.347551][ C1] mark_lock_irq+0x4cd/0xa10 [ 43.347690][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.347907][ C1] ? stack_trace_save+0x94/0xd0 [ 43.348045][ C1] ? add_chain_cache+0x248/0x8b0 [ 43.348182][ C1] ? save_trace+0x8f/0x5b0 [ 43.348325][ C1] mark_lock+0x28d/0x3e0 [ 43.348429][ C1] mark_usage+0xd9/0x2a0 [ 43.348614][ C1] __lock_acquire+0x797/0x1570 [ 43.348755][ C1] ? __lock_acquire+0xaf0/0x1570 [ 43.348894][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.349148][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.349366][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.349606][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.349750][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 43.349890][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.350189][ C1] ? lock_acquire+0x32/0xc0 [ 43.350325][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.350533][ C1] _raw_spin_lock+0x30/0x40 [ 43.350670][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.350961][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.351177][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.351415][ C1] call_timer_fn+0x13b/0x230 [ 43.351643][ C1] ? call_timer_fn+0xe8/0x230 [ 43.351780][ C1] ? call_timer_fn+0xe8/0x230 [ 43.351922][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 43.352057][ C1] ? mark_lock+0x38/0x3e0 [ 43.352245][ C1] __run_timers+0x545/0x810 [ 43.352381][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.352635][ C1] ? __pfx___run_timers+0x10/0x10 [ 43.352773][ C1] ? __lock_release+0x103/0x460 [ 43.352995][ C1] ? do_raw_spin_lock+0x131/0x270 [ 43.353131][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.353269][ C1] ? lock_acquire+0x32/0xc0 [ 43.353404][ C1] ? timer_expire_remote+0x93/0xe0 [ 43.353642][ C1] timer_expire_remote+0x9b/0xe0 [ 43.353780][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.353922][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.354102][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.354335][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.354475][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.354615][ C1] __do_softirq+0x1f8/0x5df [ 43.354766][ C1] irq_exit_rcu+0x97/0xc0 [ 43.354873][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.355181][ C1] [ 43.355253][ C1] [ 43.355323][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.355495][ C1] RIP: 0010:default_idle+0xf/0x20 [ 43.355639][ 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 [ 43.356210][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 43.356482][ C1] RAX: 0000000000078f5f RBX: 1ffff92000029fc1 RCX: ffffffffa210f9e5 [ 43.356688][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9faaa4a4 [ 43.356893][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 43.357178][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 43.357386][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 43.357599][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.357819][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 43.357973][ C1] default_idle_call+0x6d/0xb0 [ 43.358115][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.358259][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.358404][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.358626][ C1] do_idle+0xf9/0x160 [ 43.358736][ C1] cpu_startup_entry+0x54/0x60 [ 43.358872][ C1] start_secondary+0x21c/0x2b0 [ 43.359007][ C1] ? __pfx_start_secondary+0x10/0x10 [ 43.359226][ C1] common_startup_64+0x12c/0x138 [ 43.359368][ C1] [ 44.536921][ T301] GACT probability NOT on [ 46.359911][ T308] br0: port 2(veth2) entered disabled state [ 46.663076][ T7] br0: port 2(veth2) entered blocking state [ 46.663285][ T7] br0: port 2(veth2) entered forwarding state [ 53.727747][ T326] br0: port 1(veth1) entered disabled state [ 53.826185][ T327] br0: port 2(veth2) entered disabled state [ 53.921179][ T328] veth2: left allmulticast mode [ 53.921667][ T328] veth2: left promiscuous mode [ 53.921927][ T328] br0: port 2(veth2) entered disabled state [ 53.922922][ T328] veth1: left allmulticast mode [ 53.923070][ T328] veth1: left promiscuous mode [ 53.923303][ T328] br0: port 1(veth1) entered disabled state