[ 24.376228][ T236] ip (236) used greatest stack depth: 23200 bytes left [ 28.516261][ T287] br0: port 1(veth1) entered blocking state [ 28.516943][ T287] br0: port 1(veth1) entered disabled state [ 28.517485][ T287] veth1: entered allmulticast mode [ 28.520922][ T287] veth1: entered promiscuous mode [ 28.650373][ T289] br0: port 2(veth2) entered blocking state [ 28.650627][ T289] br0: port 2(veth2) entered disabled state [ 28.651596][ T289] veth2: entered allmulticast mode [ 28.653460][ T289] veth2: entered promiscuous mode [ 28.907066][ T24] br0: port 1(veth1) entered blocking state [ 28.907409][ T24] br0: port 1(veth1) entered forwarding state [ 29.050310][ T64] br0: port 2(veth2) entered blocking state [ 29.050600][ T64] br0: port 2(veth2) entered forwarding state [ 40.900690][ T315] GACT probability NOT on [ 44.377908][ C0] [ 44.378104][ C0] ======================================================== [ 44.378376][ C0] WARNING: possible irq lock inversion dependency detected [ 44.378652][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 44.378830][ C0] -------------------------------------------------------- [ 44.379086][ C0] swapper/0/0 just changed the state of lock: [ 44.379305][ C0] ffff88800707ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.379765][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.380033][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 44.380037][ C0] [ 44.380037][ C0] [ 44.380037][ C0] and interrupts could create inverse lock ordering between them. [ 44.380037][ C0] [ 44.380679][ C0] [ 44.380679][ C0] other info that might help us debug this: [ 44.380930][ C0] Chain exists of: [ 44.380930][ C0] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.380930][ C0] [ 44.381329][ C0] Possible interrupt unsafe locking scenario: [ 44.381329][ C0] [ 44.381589][ C0] CPU0 CPU1 [ 44.381761][ C0] ---- ---- [ 44.381933][ C0] lock(&p->alloc_lock); [ 44.382067][ C0] local_irq_disable(); [ 44.382281][ C0] lock(&br->lock); [ 44.382496][ C0] lock(lweventlist_lock); [ 44.382711][ C0] [ 44.382842][ C0] lock(&br->lock); [ 44.382976][ C0] [ 44.382976][ C0] *** DEADLOCK *** [ 44.382976][ C0] [ 44.383229][ C0] 1 lock held by swapper/0/0: [ 44.383403][ C0] #0: ffffc90000007b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.383760][ C0] [ 44.383760][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 44.384064][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.384242][ C0] HARDIRQ-ON-W at: [ 44.384378][ C0] __lock_acquire+0x797/0x1570 [ 44.384598][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.384815][ C0] _raw_spin_lock+0x30/0x40 [ 44.385036][ C0] set_mems_allowed+0x1d/0x210 [ 44.385257][ C0] kernel_init_freeable+0x72/0x310 [ 44.385473][ C0] kernel_init+0x20/0x200 [ 44.385694][ C0] ret_from_fork+0x31/0x70 [ 44.385915][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.386133][ C0] SOFTIRQ-ON-W at: [ 44.386265][ C0] __lock_acquire+0x797/0x1570 [ 44.386495][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.386718][ C0] _raw_spin_lock+0x30/0x40 [ 44.386937][ C0] set_mems_allowed+0x1d/0x210 [ 44.387155][ C0] kernel_init_freeable+0x72/0x310 [ 44.387373][ C0] kernel_init+0x20/0x200 [ 44.387593][ C0] ret_from_fork+0x31/0x70 [ 44.387812][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.388034][ C0] INITIAL USE at: [ 44.388166][ C0] __lock_acquire+0x797/0x1570 [ 44.388383][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.388600][ C0] _raw_spin_lock+0x30/0x40 [ 44.388815][ C0] set_mems_allowed+0x1d/0x210 [ 44.389030][ C0] kernel_init_freeable+0x72/0x310 [ 44.389248][ C0] kernel_init+0x20/0x200 [ 44.389461][ C0] ret_from_fork+0x31/0x70 [ 44.389679][ C0] ret_from_fork_asm+0x1a/0x30 [ 44.389893][ C0] } [ 44.389983][ C0] ... key at: [] __key.387+0x0/0x40 [ 44.390247][ C0] ... acquired at: [ 44.390379][ C0] __lock_acquire+0xaf0/0x1570 [ 44.390558][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.390729][ C0] _raw_spin_lock+0x30/0x40 [ 44.390902][ C0] __get_task_comm+0x27/0x70 [ 44.391077][ C0] ref_tracker_alloc+0x2ee/0x490 [ 44.391252][ C0] linkwatch_fire_event+0x196/0x200 [ 44.391438][ C0] veth_newlink+0x367/0x830 [veth] [ 44.391620][ C0] rtnl_newlink_create+0x341/0x850 [ 44.391794][ C0] __rtnl_newlink+0xac9/0xd80 [ 44.391970][ C0] rtnl_newlink+0x63/0xa0 [ 44.392143][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.392319][ C0] netlink_rcv_skb+0x130/0x360 [ 44.392493][ C0] netlink_unicast+0x449/0x710 [ 44.392663][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.392834][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 44.393007][ C0] ___sys_sendmsg+0xee/0x170 [ 44.393179][ C0] __sys_sendmsg+0xcd/0x170 [ 44.393352][ C0] do_syscall_64+0xc6/0x1e0 [ 44.393529][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.393746][ C0] [ 44.393837][ C0] -> (lweventlist_lock){....}-{2:2} { [ 44.394015][ C0] INITIAL USE at: [ 44.394145][ C0] __lock_acquire+0x797/0x1570 [ 44.394364][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.394583][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.394807][ C0] linkwatch_sync_dev+0x29/0x1f0 [ 44.395020][ C0] rtnl_getlink+0x4c9/0x970 [ 44.395237][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.395456][ C0] netlink_rcv_skb+0x130/0x360 [ 44.395673][ C0] netlink_unicast+0x449/0x710 [ 44.395889][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.396107][ C0] __sys_sendto+0x37d/0x410 [ 44.396325][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.396552][ C0] do_syscall_64+0xc6/0x1e0 [ 44.396769][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.397033][ C0] } [ 44.397120][ C0] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.397385][ C0] ... acquired at: [ 44.397514][ C0] __lock_acquire+0xaf0/0x1570 [ 44.397691][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.397865][ C0] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.398038][ C0] linkwatch_fire_event+0x74/0x200 [ 44.398215][ C0] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.398480][ C0] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.398735][ C0] dev_set_mac_address+0x28a/0x410 [ 44.398917][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.399091][ C0] do_setlink+0x17b4/0x21e0 [ 44.399269][ C0] rtnl_setlink+0x1f7/0x310 [ 44.399443][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.399618][ C0] netlink_rcv_skb+0x130/0x360 [ 44.399793][ C0] netlink_unicast+0x449/0x710 [ 44.399965][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.400150][ C0] __sys_sendto+0x37d/0x410 [ 44.400330][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.400502][ C0] do_syscall_64+0xc6/0x1e0 [ 44.400680][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.400895][ C0] [ 44.400983][ C0] -> (&br->lock){+.-.}-{2:2} { [ 44.401164][ C0] HARDIRQ-ON-W at: [ 44.401302][ C0] __lock_acquire+0x797/0x1570 [ 44.401522][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.401741][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.401958][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.402251][ C0] dev_set_mac_address+0x28a/0x410 [ 44.402474][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.402690][ C0] do_setlink+0x17b4/0x21e0 [ 44.402906][ C0] rtnl_setlink+0x1f7/0x310 [ 44.403126][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.403343][ C0] netlink_rcv_skb+0x130/0x360 [ 44.403563][ C0] netlink_unicast+0x449/0x710 [ 44.403782][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.403998][ C0] __sys_sendto+0x37d/0x410 [ 44.404225][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.404441][ C0] do_syscall_64+0xc6/0x1e0 [ 44.404664][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.404922][ C0] IN-SOFTIRQ-W at: [ 44.405052][ C0] __lock_acquire+0x797/0x1570 [ 44.405274][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.405491][ C0] _raw_spin_lock+0x30/0x40 [ 44.405706][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.406003][ C0] call_timer_fn+0x13b/0x230 [ 44.406226][ C0] __run_timers+0x545/0x810 [ 44.406503][ C0] timer_expire_remote+0x9b/0xe0 [ 44.406722][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.407041][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.407257][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.407474][ C0] __do_softirq+0x1f8/0x5df [ 44.407694][ C0] irq_exit_rcu+0x97/0xc0 [ 44.407911][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.408169][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.408432][ C0] default_idle+0xf/0x20 [ 44.408651][ C0] default_idle_call+0x6d/0xb0 [ 44.408864][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.409085][ C0] do_idle+0xf9/0x160 [ 44.409366][ C0] cpu_startup_entry+0x54/0x60 [ 44.409584][ C0] rest_init+0x14f/0x260 [ 44.409803][ C0] start_kernel+0x318/0x3d0 [ 44.410022][ C0] x86_64_start_reservations+0x18/0x30 [ 44.410243][ C0] x86_64_start_kernel+0xba/0x110 [ 44.410459][ C0] common_startup_64+0x12c/0x138 [ 44.410676][ C0] INITIAL USE at: [ 44.410903][ C0] __lock_acquire+0x797/0x1570 [ 44.411118][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.411334][ C0] _raw_spin_lock_bh+0x38/0x50 [ 44.411558][ C0] br_set_mac_address+0xd2/0x260 [bridge] [ 44.411855][ C0] dev_set_mac_address+0x28a/0x410 [ 44.412076][ C0] dev_set_mac_address_user+0x31/0x50 [ 44.412292][ C0] do_setlink+0x17b4/0x21e0 [ 44.412608][ C0] rtnl_setlink+0x1f7/0x310 [ 44.412821][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.413043][ C0] netlink_rcv_skb+0x130/0x360 [ 44.413258][ C0] netlink_unicast+0x449/0x710 [ 44.413477][ C0] netlink_sendmsg+0x723/0xbe0 [ 44.413691][ C0] __sys_sendto+0x37d/0x410 [ 44.413905][ C0] __x64_sys_sendto+0xe0/0x1c0 [ 44.414218][ C0] do_syscall_64+0xc6/0x1e0 [ 44.414433][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.414687][ C0] } [ 44.414773][ C0] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.415108][ C0] ... acquired at: [ 44.415243][ C0] mark_lock+0x28d/0x3e0 [ 44.415417][ C0] mark_usage+0xd9/0x2a0 [ 44.415682][ C0] __lock_acquire+0x797/0x1570 [ 44.415853][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.416024][ C0] _raw_spin_lock+0x30/0x40 [ 44.416203][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.416466][ C0] call_timer_fn+0x13b/0x230 [ 44.416642][ C0] __run_timers+0x545/0x810 [ 44.416816][ C0] timer_expire_remote+0x9b/0xe0 [ 44.416988][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.417161][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.417435][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.417607][ C0] __do_softirq+0x1f8/0x5df [ 44.417782][ C0] irq_exit_rcu+0x97/0xc0 [ 44.417958][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.418177][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.418394][ C0] default_idle+0xf/0x20 [ 44.418569][ C0] default_idle_call+0x6d/0xb0 [ 44.418749][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.419021][ C0] do_idle+0xf9/0x160 [ 44.419151][ C0] cpu_startup_entry+0x54/0x60 [ 44.419328][ C0] rest_init+0x14f/0x260 [ 44.419499][ C0] start_kernel+0x318/0x3d0 [ 44.419676][ C0] x86_64_start_reservations+0x18/0x30 [ 44.419861][ C0] x86_64_start_kernel+0xba/0x110 [ 44.420038][ C0] common_startup_64+0x12c/0x138 [ 44.420212][ C0] [ 44.420298][ C0] [ 44.420298][ C0] stack backtrace: [ 44.420512][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 44.420779][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.421266][ C0] Call Trace: [ 44.421399][ C0] [ 44.421488][ C0] dump_stack_lvl+0x82/0xd0 [ 44.421667][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.421884][ C0] ? common_startup_64+0x12c/0x138 [ 44.422065][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.422280][ C0] ? __pfx_usage_skip+0x10/0x10 [ 44.422455][ C0] ? __pfx_usage_match+0x10/0x10 [ 44.422632][ C0] ? arch_stack_walk+0x8c/0xf0 [ 44.422907][ C0] mark_lock_irq+0x4cd/0xa10 [ 44.423082][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.423253][ C0] ? stack_trace_save+0x94/0xd0 [ 44.423431][ C0] ? add_chain_cache+0x248/0x8b0 [ 44.423608][ C0] ? save_trace+0x8f/0x5b0 [ 44.423784][ C0] mark_lock+0x28d/0x3e0 [ 44.423918][ C0] mark_usage+0xd9/0x2a0 [ 44.424048][ C0] __lock_acquire+0x797/0x1570 [ 44.424227][ C0] ? __lock_acquire+0xaf0/0x1570 [ 44.424499][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.424797][ C0] lock_acquire.part.0+0xeb/0x330 [ 44.424971][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.425320][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.425495][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 44.425669][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.425923][ C0] ? lock_acquire+0x32/0xc0 [ 44.426096][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.426351][ C0] _raw_spin_lock+0x30/0x40 [ 44.426601][ C0] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.426854][ C0] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.427202][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.427501][ C0] call_timer_fn+0x13b/0x230 [ 44.427678][ C0] ? call_timer_fn+0xe8/0x230 [ 44.427851][ C0] ? call_timer_fn+0xe8/0x230 [ 44.428031][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 44.428206][ C0] ? mark_lock+0x38/0x3e0 [ 44.428345][ C0] __run_timers+0x545/0x810 [ 44.428518][ C0] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.428911][ C0] ? __pfx___run_timers+0x10/0x10 [ 44.429092][ C0] ? __lock_release+0x103/0x460 [ 44.429274][ C0] ? do_raw_spin_lock+0x131/0x270 [ 44.429446][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.429620][ C0] ? lock_acquire+0x32/0xc0 [ 44.429795][ C0] ? timer_expire_remote+0x93/0xe0 [ 44.429970][ C0] timer_expire_remote+0x9b/0xe0 [ 44.430144][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 44.430417][ C0] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 44.430638][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 44.430813][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 44.430986][ C0] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 44.431162][ C0] __do_softirq+0x1f8/0x5df [ 44.431342][ C0] irq_exit_rcu+0x97/0xc0 [ 44.431476][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.431650][ C0] [ 44.431740][ C0] [ 44.431826][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.432150][ C0] RIP: 0010:default_idle+0xf/0x20 [ 44.432330][ C0] 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 [ 44.432951][ C0] RSP: 0018:ffffffffba607e00 EFLAGS: 00000246 [ 44.433169][ C0] RAX: 0000000000092c05 RBX: 1ffffffff74c0fc2 RCX: ffffffffb970e9d5 [ 44.433433][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb70aa4a4 [ 44.433695][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 44.433960][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 44.434323][ C0] R13: ffffffffba61d000 R14: dffffc0000000000 R15: 0000000000014770 [ 44.434587][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.434765][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 44.434941][ C0] default_idle_call+0x6d/0xb0 [ 44.435114][ C0] cpuidle_idle_call+0x1f4/0x280 [ 44.435293][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.435468][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.435644][ C0] do_idle+0xf9/0x160 [ 44.435777][ C0] cpu_startup_entry+0x54/0x60 [ 44.436046][ C0] rest_init+0x14f/0x260 [ 44.436180][ C0] start_kernel+0x318/0x3d0 [ 44.436360][ C0] x86_64_start_reservations+0x18/0x30 [ 44.436542][ C0] x86_64_start_kernel+0xba/0x110 [ 44.436721][ C0] common_startup_64+0x12c/0x138 [ 44.436898][ C0] [ 215.047664][ T1505] br0: port 2(veth2) entered disabled state [ 215.139503][ T1506] br0: port 1(veth1) entered disabled state [ 215.229705][ T1507] veth2: left allmulticast mode [ 215.230482][ T1507] veth2: left promiscuous mode [ 215.230885][ T1507] br0: port 2(veth2) entered disabled state [ 215.232005][ T1507] veth1: left allmulticast mode [ 215.232152][ T1507] veth1: left promiscuous mode [ 215.232415][ T1507] br0: port 1(veth1) entered disabled state