[ 24.864612][ T236] ip (236) used greatest stack depth: 23616 bytes left [ 27.831340][ T276] 8021q: 802.1Q VLAN Support v1.8 [ 30.213591][ T297] br0: port 1(veth1) entered blocking state [ 30.214036][ T297] br0: port 1(veth1) entered disabled state [ 30.214683][ T297] veth1: entered allmulticast mode [ 30.216597][ T297] veth1: entered promiscuous mode [ 30.321522][ T299] br0: port 2(veth2) entered blocking state [ 30.322864][ T299] br0: port 2(veth2) entered disabled state [ 30.323605][ T299] veth2: entered allmulticast mode [ 30.325481][ T299] veth2: entered promiscuous mode [ 30.693733][ T51] br0: port 1(veth1) entered blocking state [ 30.694108][ T51] br0: port 1(veth1) entered forwarding state [ 30.817980][ T7] br0: port 2(veth2) entered blocking state [ 30.818261][ T7] br0: port 2(veth2) entered forwarding state [ 45.868681][ C2] [ 45.868867][ C2] ======================================================== [ 45.869075][ C2] WARNING: possible irq lock inversion dependency detected [ 45.869286][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 45.869424][ C2] -------------------------------------------------------- [ 45.869643][ C2] swapper/2/0 just changed the state of lock: [ 45.869826][ C2] ffff888005922c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.870194][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.870397][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 45.870401][ C2] [ 45.870401][ C2] [ 45.870401][ C2] and interrupts could create inverse lock ordering between them. [ 45.870401][ C2] [ 45.870911][ C2] [ 45.870911][ C2] other info that might help us debug this: [ 45.871138][ C2] Chain exists of: [ 45.871138][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.871138][ C2] [ 45.871459][ C2] Possible interrupt unsafe locking scenario: [ 45.871459][ C2] [ 45.871659][ C2] CPU0 CPU1 [ 45.871798][ C2] ---- ---- [ 45.871939][ C2] lock(&p->alloc_lock); [ 45.872046][ C2] local_irq_disable(); [ 45.872224][ C2] lock(&br->lock); [ 45.872407][ C2] lock(lweventlist_lock); [ 45.872577][ C2] [ 45.872681][ C2] lock(&br->lock); [ 45.872787][ C2] [ 45.872787][ C2] *** DEADLOCK *** [ 45.872787][ C2] [ 45.873000][ C2] 1 lock held by swapper/2/0: [ 45.873136][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.873431][ C2] [ 45.873431][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 45.873668][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.873811][ C2] HARDIRQ-ON-W at: [ 45.873913][ C2] __lock_acquire+0x797/0x1570 [ 45.874088][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.874263][ C2] _raw_spin_lock+0x30/0x40 [ 45.874447][ C2] set_mems_allowed+0x1d/0x210 [ 45.874616][ C2] kernel_init_freeable+0x72/0x310 [ 45.874798][ C2] kernel_init+0x20/0x200 [ 45.874975][ C2] ret_from_fork+0x31/0x70 [ 45.875147][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.875319][ C2] SOFTIRQ-ON-W at: [ 45.875429][ C2] __lock_acquire+0x797/0x1570 [ 45.875619][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.875787][ C2] _raw_spin_lock+0x30/0x40 [ 45.875965][ C2] set_mems_allowed+0x1d/0x210 [ 45.876137][ C2] kernel_init_freeable+0x72/0x310 [ 45.876304][ C2] kernel_init+0x20/0x200 [ 45.876478][ C2] ret_from_fork+0x31/0x70 [ 45.876648][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.876822][ C2] INITIAL USE at: [ 45.876922][ C2] __lock_acquire+0x797/0x1570 [ 45.877091][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.877268][ C2] _raw_spin_lock+0x30/0x40 [ 45.877437][ C2] set_mems_allowed+0x1d/0x210 [ 45.877609][ C2] kernel_init_freeable+0x72/0x310 [ 45.877779][ C2] kernel_init+0x20/0x200 [ 45.877945][ C2] ret_from_fork+0x31/0x70 [ 45.878114][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.878292][ C2] } [ 45.878363][ C2] ... key at: [] __key.387+0x0/0x40 [ 45.878570][ C2] ... acquired at: [ 45.878675][ C2] __lock_acquire+0xaf0/0x1570 [ 45.878815][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.878954][ C2] _raw_spin_lock+0x30/0x40 [ 45.879091][ C2] __get_task_comm+0x27/0x70 [ 45.879229][ C2] ref_tracker_alloc+0x2ee/0x490 [ 45.879367][ C2] linkwatch_fire_event+0x196/0x200 [ 45.879507][ C2] veth_newlink+0x367/0x830 [veth] [ 45.879664][ C2] rtnl_newlink_create+0x341/0x850 [ 45.879806][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.879949][ C2] rtnl_newlink+0x63/0xa0 [ 45.880084][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.880219][ C2] netlink_rcv_skb+0x130/0x360 [ 45.880360][ C2] netlink_unicast+0x449/0x710 [ 45.880500][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.880638][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.880775][ C2] ___sys_sendmsg+0xee/0x170 [ 45.880917][ C2] __sys_sendmsg+0xcd/0x170 [ 45.881058][ C2] do_syscall_64+0xc6/0x1e0 [ 45.881208][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.881383][ C2] [ 45.881452][ C2] -> (lweventlist_lock){....}-{2:2} { [ 45.881599][ C2] INITIAL USE at: [ 45.881710][ C2] __lock_acquire+0x797/0x1570 [ 45.881882][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.882058][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.882229][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 45.882402][ C2] rtnl_getlink+0x4c9/0x970 [ 45.882582][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.882751][ C2] netlink_rcv_skb+0x130/0x360 [ 45.882925][ C2] netlink_unicast+0x449/0x710 [ 45.883109][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.883285][ C2] __sys_sendto+0x37d/0x410 [ 45.883459][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.883637][ C2] do_syscall_64+0xc6/0x1e0 [ 45.883810][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.884015][ C2] } [ 45.884094][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.884303][ C2] ... acquired at: [ 45.884405][ C2] __lock_acquire+0xaf0/0x1570 [ 45.884540][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.884674][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.884806][ C2] linkwatch_fire_event+0x74/0x200 [ 45.884943][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.885164][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.885365][ C2] dev_set_mac_address+0x28a/0x410 [ 45.885506][ C2] dev_set_mac_address_user+0x31/0x50 [ 45.885640][ C2] do_setlink+0x17b4/0x21e0 [ 45.885776][ C2] rtnl_setlink+0x1f7/0x310 [ 45.885908][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.886040][ C2] netlink_rcv_skb+0x130/0x360 [ 45.886185][ C2] netlink_unicast+0x449/0x710 [ 45.886324][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.886455][ C2] __sys_sendto+0x37d/0x410 [ 45.886595][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.886740][ C2] do_syscall_64+0xc6/0x1e0 [ 45.886876][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.887041][ C2] [ 45.887108][ C2] -> (&br->lock){+.-.}-{2:2} { [ 45.887258][ C2] HARDIRQ-ON-W at: [ 45.887363][ C2] __lock_acquire+0x797/0x1570 [ 45.887538][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.887706][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.887885][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 45.888133][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.888387][ C2] br_changelink+0x36c/0x1360 [bridge] [ 45.888599][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 45.888820][ C2] rtnl_newlink_create+0x341/0x850 [ 45.888994][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.889170][ C2] rtnl_newlink+0x63/0xa0 [ 45.889348][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.889523][ C2] netlink_rcv_skb+0x130/0x360 [ 45.889704][ C2] netlink_unicast+0x449/0x710 [ 45.889882][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.890060][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.890240][ C2] ___sys_sendmsg+0xee/0x170 [ 45.890419][ C2] __sys_sendmsg+0xcd/0x170 [ 45.890676][ C2] do_syscall_64+0xc6/0x1e0 [ 45.890853][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.891069][ C2] IN-SOFTIRQ-W at: [ 45.891305][ C2] __lock_acquire+0x797/0x1570 [ 45.891494][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.891693][ C2] _raw_spin_lock+0x30/0x40 [ 45.891874][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.892223][ C2] call_timer_fn+0x13b/0x230 [ 45.892418][ C2] __run_timers+0x545/0x810 [ 45.892607][ C2] run_timer_softirq+0xe8/0x1b0 [ 45.892886][ C2] __do_softirq+0x1f8/0x5df [ 45.893072][ C2] irq_exit_rcu+0x97/0xc0 [ 45.893263][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.893571][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.893794][ C2] default_idle+0xf/0x20 [ 45.893972][ C2] default_idle_call+0x6d/0xb0 [ 45.894249][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.894434][ C2] do_idle+0xf9/0x160 [ 45.894581][ C2] cpu_startup_entry+0x54/0x60 [ 45.894766][ C2] start_secondary+0x21c/0x2b0 [ 45.895040][ C2] common_startup_64+0x12c/0x138 [ 45.895239][ C2] INITIAL USE at: [ 45.895344][ C2] __lock_acquire+0x797/0x1570 [ 45.895523][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.895790][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.895966][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 45.896211][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.896460][ C2] br_changelink+0x36c/0x1360 [bridge] [ 45.896678][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 45.896897][ C2] rtnl_newlink_create+0x341/0x850 [ 45.897079][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.897259][ C2] rtnl_newlink+0x63/0xa0 [ 45.897436][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.897699][ C2] netlink_rcv_skb+0x130/0x360 [ 45.897873][ C2] netlink_unicast+0x449/0x710 [ 45.898056][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.898246][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.898505][ C2] ___sys_sendmsg+0xee/0x170 [ 45.898686][ C2] __sys_sendmsg+0xcd/0x170 [ 45.898865][ C2] do_syscall_64+0xc6/0x1e0 [ 45.899123][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.899332][ C2] } [ 45.899406][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.899685][ C2] ... acquired at: [ 45.899868][ C2] mark_lock+0x28d/0x3e0 [ 45.900008][ C2] mark_usage+0xd9/0x2a0 [ 45.900153][ C2] __lock_acquire+0x797/0x1570 [ 45.900291][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.900589][ C2] _raw_spin_lock+0x30/0x40 [ 45.900728][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.900948][ C2] call_timer_fn+0x13b/0x230 [ 45.901083][ C2] __run_timers+0x545/0x810 [ 45.901345][ C2] run_timer_softirq+0xe8/0x1b0 [ 45.901483][ C2] __do_softirq+0x1f8/0x5df [ 45.901618][ C2] irq_exit_rcu+0x97/0xc0 [ 45.901752][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.902003][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.902180][ C2] default_idle+0xf/0x20 [ 45.902335][ C2] default_idle_call+0x6d/0xb0 [ 45.902479][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.902699][ C2] do_idle+0xf9/0x160 [ 45.902802][ C2] cpu_startup_entry+0x54/0x60 [ 45.902944][ C2] start_secondary+0x21c/0x2b0 [ 45.903081][ C2] common_startup_64+0x12c/0x138 [ 45.903235][ C2] [ 45.903313][ C2] [ 45.903313][ C2] stack backtrace: [ 45.903499][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 45.903723][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.904050][ C2] Call Trace: [ 45.904168][ C2] [ 45.904249][ C2] dump_stack_lvl+0x82/0xd0 [ 45.904408][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.904688][ C2] ? common_startup_64+0x12c/0x138 [ 45.904838][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.905033][ C2] ? __pfx_usage_skip+0x10/0x10 [ 45.905185][ C2] ? __pfx_usage_match+0x10/0x10 [ 45.905339][ C2] ? arch_stack_walk+0x8c/0xf0 [ 45.905497][ C2] mark_lock_irq+0x4cd/0xa10 [ 45.905657][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.905809][ C2] ? stack_trace_save+0x94/0xd0 [ 45.905968][ C2] ? add_chain_cache+0x248/0x8b0 [ 45.906122][ C2] ? save_trace+0x8f/0x5b0 [ 45.906281][ C2] mark_lock+0x28d/0x3e0 [ 45.906394][ C2] mark_usage+0xd9/0x2a0 [ 45.906507][ C2] __lock_acquire+0x797/0x1570 [ 45.906738][ C2] ? __lock_acquire+0xaf0/0x1570 [ 45.906900][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.907166][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.907316][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.907633][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.907792][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 45.907939][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908165][ C2] ? lock_acquire+0x32/0xc0 [ 45.908392][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908618][ C2] _raw_spin_lock+0x30/0x40 [ 45.908766][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.909076][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.909303][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.909556][ C2] call_timer_fn+0x13b/0x230 [ 45.909699][ C2] ? call_timer_fn+0xe8/0x230 [ 45.909920][ C2] ? call_timer_fn+0xe8/0x230 [ 45.910071][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 45.910222][ C2] ? mark_lock+0x38/0x3e0 [ 45.910335][ C2] __run_timers+0x545/0x810 [ 45.910561][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.910816][ C2] ? __pfx___run_timers+0x10/0x10 [ 45.910964][ C2] ? do_raw_spin_lock+0x131/0x270 [ 45.911124][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.911362][ C2] ? lock_acquire+0x32/0xc0 [ 45.911510][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 45.911658][ C2] run_timer_softirq+0xe8/0x1b0 [ 45.911819][ C2] __do_softirq+0x1f8/0x5df [ 45.912115][ C2] irq_exit_rcu+0x97/0xc0 [ 45.912234][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.912380][ C2] [ 45.912456][ C2] [ 45.912529][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.912715][ C2] RIP: 0010:default_idle+0xf/0x20 [ 45.912960][ 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 [ 45.913595][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 45.913793][ C2] RAX: 00000000000f166f RBX: 1ffff9200002bfc1 RCX: ffffffffb2d0f9e5 [ 45.914017][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb06aa4a4 [ 45.914240][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 45.914463][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 45.914699][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 45.914922][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.915070][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 45.915226][ C2] default_idle_call+0x6d/0xb0 [ 45.915377][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.915615][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.915769][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.915931][ C2] do_idle+0xf9/0x160 [ 45.916049][ C2] cpu_startup_entry+0x54/0x60 [ 45.916203][ C2] start_secondary+0x21c/0x2b0 [ 45.916359][ C2] ? __pfx_start_secondary+0x10/0x10 [ 45.916513][ C2] common_startup_64+0x12c/0x138 [ 45.916668][ C2] [ 87.751214][ T510] Mirror/redirect action on [ 95.471462][ T540] br0: port 2(veth2) entered disabled state [ 95.572545][ T541] br0: port 1(veth1) entered disabled state [ 95.675194][ T543] veth2: left allmulticast mode [ 95.675380][ T543] veth2: left promiscuous mode [ 95.676390][ T543] br0: port 2(veth2) entered disabled state [ 95.677340][ T543] veth1: left allmulticast mode [ 95.677496][ T543] veth1: left promiscuous mode [ 95.677747][ T543] br0: port 1(veth1) entered disabled state