[ 24.594683][ T238] ip (238) used greatest stack depth: 24600 bytes left [ 28.476711][ T284] br0: port 1(veth1) entered blocking state [ 28.477139][ T284] br0: port 1(veth1) entered disabled state [ 28.478436][ T284] veth1: entered allmulticast mode [ 28.480423][ T284] veth1: entered promiscuous mode [ 28.609495][ T286] br0: port 2(veth2) entered blocking state [ 28.609775][ T286] br0: port 2(veth2) entered disabled state [ 28.610039][ T286] veth2: entered allmulticast mode [ 28.611944][ T286] veth2: entered promiscuous mode [ 28.850262][ T64] br0: port 1(veth1) entered blocking state [ 28.850688][ T64] br0: port 1(veth1) entered forwarding state [ 28.993380][ T7] br0: port 2(veth2) entered blocking state [ 28.993668][ T7] br0: port 2(veth2) entered forwarding state [ 43.449866][ T336] GACT probability NOT on [ 44.334771][ C2] [ 44.334954][ C2] ======================================================== [ 44.335193][ C2] WARNING: possible irq lock inversion dependency detected [ 44.335398][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 44.335536][ C2] -------------------------------------------------------- [ 44.335749][ C2] swapper/2/0 just changed the state of lock: [ 44.335925][ C2] ffff888006732c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.336300][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.336519][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 44.336523][ C2] [ 44.336523][ C2] [ 44.336523][ C2] and interrupts could create inverse lock ordering between them. [ 44.336523][ C2] [ 44.337027][ C2] [ 44.337027][ C2] other info that might help us debug this: [ 44.337227][ C2] Chain exists of: [ 44.337227][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.337227][ C2] [ 44.337544][ C2] Possible interrupt unsafe locking scenario: [ 44.337544][ C2] [ 44.337746][ C2] CPU0 CPU1 [ 44.337884][ C2] ---- ---- [ 44.338026][ C2] lock(&p->alloc_lock); [ 44.338136][ C2] local_irq_disable(); [ 44.338316][ C2] lock(&br->lock); [ 44.338494][ C2] lock(lweventlist_lock); [ 44.338665][ C2] [ 44.338774][ C2] lock(&br->lock); [ 44.338888][ C2] [ 44.338888][ C2] *** DEADLOCK *** [ 44.338888][ C2] [ 44.339092][ C2] 1 lock held by swapper/2/0: [ 44.339238][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.339528][ C2] [ 44.339528][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 44.339779][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.339924][ C2] HARDIRQ-ON-W at: [ 44.340042][ C2] __lock_acquire+0x797/0x1570 [ 44.340232][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.340409][ C2] _raw_spin_lock+0x30/0x40 [ 44.340591][ C2] set_mems_allowed+0x1d/0x210 [ 44.340779][ C2] kernel_init_freeable+0x72/0x310 [ 44.340957][ C2] kernel_init+0x20/0x200 [ 44.341136][ C2] ret_from_fork+0x31/0x70 [ 44.341317][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.341499][ C2] SOFTIRQ-ON-W at: [ 44.341603][ C2] __lock_acquire+0x797/0x1570 [ 44.341785][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.341964][ C2] _raw_spin_lock+0x30/0x40 [ 44.342142][ C2] set_mems_allowed+0x1d/0x210 [ 44.342315][ C2] kernel_init_freeable+0x72/0x310 [ 44.342492][ C2] kernel_init+0x20/0x200 [ 44.342669][ C2] ret_from_fork+0x31/0x70 [ 44.342852][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.343028][ C2] INITIAL USE at: [ 44.343134][ C2] __lock_acquire+0x797/0x1570 [ 44.343313][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.343488][ C2] _raw_spin_lock+0x30/0x40 [ 44.343667][ C2] set_mems_allowed+0x1d/0x210 [ 44.343854][ C2] kernel_init_freeable+0x72/0x310 [ 44.344028][ C2] kernel_init+0x20/0x200 [ 44.344214][ C2] ret_from_fork+0x31/0x70 [ 44.344396][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.344581][ C2] } [ 44.344658][ C2] ... key at: [] __key.387+0x0/0x40 [ 44.344878][ C2] ... acquired at: [ 44.344991][ C2] __lock_acquire+0xaf0/0x1570 [ 44.345142][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.345285][ C2] _raw_spin_lock+0x30/0x40 [ 44.345423][ C2] __get_task_comm+0x27/0x70 [ 44.345571][ C2] ref_tracker_alloc+0x2ee/0x490 [ 44.345713][ C2] linkwatch_fire_event+0x196/0x200 [ 44.345861][ C2] veth_newlink+0x367/0x830 [veth] [ 44.346014][ C2] rtnl_newlink_create+0x341/0x850 [ 44.346171][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.346308][ C2] rtnl_newlink+0x63/0xa0 [ 44.346445][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.346583][ C2] netlink_rcv_skb+0x130/0x360 [ 44.346724][ C2] netlink_unicast+0x449/0x710 [ 44.346865][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.347005][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.347150][ C2] ___sys_sendmsg+0xee/0x170 [ 44.347288][ C2] __sys_sendmsg+0xcd/0x170 [ 44.347434][ C2] do_syscall_64+0xc6/0x1e0 [ 44.347584][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.347756][ C2] [ 44.347829][ C2] -> (lweventlist_lock){....}-{2:2} { [ 44.347972][ C2] INITIAL USE at: [ 44.348076][ C2] __lock_acquire+0x797/0x1570 [ 44.348254][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.348445][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.348623][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 44.348801][ C2] rtnl_getlink+0x4c9/0x970 [ 44.348985][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.349209][ C2] netlink_rcv_skb+0x130/0x360 [ 44.349465][ C2] netlink_unicast+0x449/0x710 [ 44.349716][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.349893][ C2] __sys_sendto+0x37d/0x410 [ 44.350073][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.350253][ C2] do_syscall_64+0xc6/0x1e0 [ 44.350435][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.350644][ C2] } [ 44.350715][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.350959][ C2] ... acquired at: [ 44.351106][ C2] __lock_acquire+0xaf0/0x1570 [ 44.351320][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.351533][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.351747][ C2] linkwatch_fire_event+0x74/0x200 [ 44.351963][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.352314][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.352664][ C2] dev_set_mac_address+0x28a/0x410 [ 44.352888][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.353111][ C2] do_setlink+0x17b4/0x21e0 [ 44.353333][ C2] rtnl_setlink+0x1f7/0x310 [ 44.353553][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.353771][ C2] netlink_rcv_skb+0x130/0x360 [ 44.353993][ C2] netlink_unicast+0x449/0x710 [ 44.354213][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.354446][ C2] __sys_sendto+0x37d/0x410 [ 44.354676][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.354899][ C2] do_syscall_64+0xc6/0x1e0 [ 44.355105][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.355323][ C2] [ 44.355394][ C2] -> (&br->lock){+.-.}-{2:2} { [ 44.355545][ C2] HARDIRQ-ON-W at: [ 44.355655][ C2] __lock_acquire+0x797/0x1570 [ 44.355840][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.356021][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.356195][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.356446][ C2] dev_set_mac_address+0x28a/0x410 [ 44.356623][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.356796][ C2] do_setlink+0x17b4/0x21e0 [ 44.356981][ C2] rtnl_setlink+0x1f7/0x310 [ 44.357265][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.357532][ C2] netlink_rcv_skb+0x130/0x360 [ 44.357807][ C2] netlink_unicast+0x449/0x710 [ 44.358090][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.358363][ C2] __sys_sendto+0x37d/0x410 [ 44.358630][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.358894][ C2] do_syscall_64+0xc6/0x1e0 [ 44.359167][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.359488][ C2] IN-SOFTIRQ-W at: [ 44.359647][ C2] __lock_acquire+0x797/0x1570 [ 44.359908][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.360160][ C2] _raw_spin_lock+0x30/0x40 [ 44.360417][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.360811][ C2] call_timer_fn+0x13b/0x230 [ 44.361223][ C2] __run_timers+0x545/0x810 [ 44.361485][ C2] timer_expire_remote+0x9b/0xe0 [ 44.361751][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.362170][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.362449][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.362733][ C2] __do_softirq+0x1f8/0x5df [ 44.363003][ C2] irq_exit_rcu+0x97/0xc0 [ 44.363412][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.363728][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.364045][ C2] default_idle+0xf/0x20 [ 44.364455][ C2] default_idle_call+0x6d/0xb0 [ 44.364808][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.365088][ C2] do_idle+0xf9/0x160 [ 44.365470][ C2] cpu_startup_entry+0x54/0x60 [ 44.365751][ C2] start_secondary+0x21c/0x2b0 [ 44.366036][ C2] common_startup_64+0x12c/0x138 [ 44.366319][ C2] INITIAL USE at: [ 44.366636][ C2] __lock_acquire+0x797/0x1570 [ 44.366928][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.367144][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.367448][ C2] br_set_mac_address+0xd2/0x260 [bridge] [ 44.367722][ C2] dev_set_mac_address+0x28a/0x410 [ 44.367896][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.368076][ C2] do_setlink+0x17b4/0x21e0 [ 44.368354][ C2] rtnl_setlink+0x1f7/0x310 [ 44.368530][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.368714][ C2] netlink_rcv_skb+0x130/0x360 [ 44.369116][ C2] netlink_unicast+0x449/0x710 [ 44.369377][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.369645][ C2] __sys_sendto+0x37d/0x410 [ 44.370047][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.370324][ C2] do_syscall_64+0xc6/0x1e0 [ 44.370599][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.370912][ C2] } [ 44.371159][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.371581][ C2] ... acquired at: [ 44.371738][ C2] mark_lock+0x28d/0x3e0 [ 44.371948][ C2] mark_usage+0xd9/0x2a0 [ 44.372308][ C2] __lock_acquire+0x797/0x1570 [ 44.372524][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.372741][ C2] _raw_spin_lock+0x30/0x40 [ 44.372943][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.373415][ C2] call_timer_fn+0x13b/0x230 [ 44.373634][ C2] __run_timers+0x545/0x810 [ 44.373845][ C2] timer_expire_remote+0x9b/0xe0 [ 44.374058][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.374410][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.374624][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.374824][ C2] __do_softirq+0x1f8/0x5df [ 44.375031][ C2] irq_exit_rcu+0x97/0xc0 [ 44.375367][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.375630][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.375889][ C2] default_idle+0xf/0x20 [ 44.376106][ C2] default_idle_call+0x6d/0xb0 [ 44.376636][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.376867][ C2] do_idle+0xf9/0x160 [ 44.377035][ C2] cpu_startup_entry+0x54/0x60 [ 44.377265][ C2] start_secondary+0x21c/0x2b0 [ 44.377504][ C2] common_startup_64+0x12c/0x138 [ 44.377728][ C2] [ 44.377841][ C2] [ 44.377841][ C2] stack backtrace: [ 44.378118][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 44.378464][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.379114][ C2] Call Trace: [ 44.379281][ C2] [ 44.379399][ C2] dump_stack_lvl+0x82/0xd0 [ 44.379615][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.379798][ C2] ? common_startup_64+0x12c/0x138 [ 44.379941][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.380129][ C2] ? __pfx_usage_skip+0x10/0x10 [ 44.380369][ C2] ? __pfx_usage_match+0x10/0x10 [ 44.380507][ C2] ? arch_stack_walk+0x8c/0xf0 [ 44.380647][ C2] mark_lock_irq+0x4cd/0xa10 [ 44.380785][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.381002][ C2] ? stack_trace_save+0x94/0xd0 [ 44.381141][ C2] ? add_chain_cache+0x248/0x8b0 [ 44.381287][ C2] ? save_trace+0x8f/0x5b0 [ 44.381425][ C2] mark_lock+0x28d/0x3e0 [ 44.381574][ C2] mark_usage+0xd9/0x2a0 [ 44.381876][ C2] __lock_acquire+0x797/0x1570 [ 44.382094][ C2] ? __lock_acquire+0xaf0/0x1570 [ 44.382314][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.382712][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.383077][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.383417][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.383656][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 44.383883][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.384378][ C2] ? lock_acquire+0x32/0xc0 [ 44.384608][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.384954][ C2] _raw_spin_lock+0x30/0x40 [ 44.385178][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.385657][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.385886][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.386139][ C2] call_timer_fn+0x13b/0x230 [ 44.386424][ C2] ? call_timer_fn+0xe8/0x230 [ 44.386565][ C2] ? call_timer_fn+0xe8/0x230 [ 44.386702][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 44.386837][ C2] ? mark_lock+0x38/0x3e0 [ 44.387026][ C2] __run_timers+0x545/0x810 [ 44.387163][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.387453][ C2] ? __pfx___run_timers+0x10/0x10 [ 44.387659][ C2] ? __lock_release+0x103/0x460 [ 44.388026][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.388244][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.388464][ C2] ? lock_acquire+0x32/0xc0 [ 44.388687][ C2] ? timer_expire_remote+0x93/0xe0 [ 44.389053][ C2] timer_expire_remote+0x9b/0xe0 [ 44.389274][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 44.389522][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.389809][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.390190][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 44.390411][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.390636][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.390857][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.391083][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.391507][ C2] __do_softirq+0x1f8/0x5df [ 44.391660][ C2] irq_exit_rcu+0x97/0xc0 [ 44.391766][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.391904][ C2] [ 44.392151][ C2] [ 44.392223][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.392408][ C2] RIP: 0010:default_idle+0xf/0x20 [ 44.392561][ 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 [ 44.393145][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000242 [ 44.393383][ C2] RAX: 00000000000e1fc1 RBX: 1ffff9200002bfc1 RCX: ffffffffa310f9e5 [ 44.393859][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffa0aaa4a4 [ 44.394191][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 44.394541][ C2] R10: ffff8880361384e3 R11: ffff88803612d9b0 R12: 0000000000000000 [ 44.394872][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 44.395206][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.395433][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 44.395812][ C2] default_idle_call+0x6d/0xb0 [ 44.396037][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.396269][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.396499][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.396722][ C2] do_idle+0xf9/0x160 [ 44.397038][ C2] cpu_startup_entry+0x54/0x60 [ 44.397260][ C2] start_secondary+0x21c/0x2b0 [ 44.397459][ C2] ? __pfx_start_secondary+0x10/0x10 [ 44.397598][ C2] common_startup_64+0x12c/0x138 [ 44.397823][ C2] [ 207.911517][ T1475] br0: port 2(veth2) entered disabled state [ 208.011473][ T1477] br0: port 1(veth1) entered disabled state [ 208.107881][ T1479] veth2: left allmulticast mode [ 208.108078][ T1479] veth2: left promiscuous mode [ 208.108341][ T1479] br0: port 2(veth2) entered disabled state [ 208.110043][ T1479] veth1: left allmulticast mode [ 208.110212][ T1479] veth1: left promiscuous mode [ 208.110464][ T1479] br0: port 1(veth1) entered disabled state