[ 28.484385][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 28.510868][ T276] ip (276) used greatest stack depth: 23808 bytes left [ 30.128055][ T292] br0: port 1(veth1) entered blocking state [ 30.128491][ T292] br0: port 1(veth1) entered disabled state [ 30.128836][ T292] veth1: entered allmulticast mode [ 30.130866][ T292] veth1: entered promiscuous mode [ 30.251107][ T294] br0: port 2(veth2) entered blocking state [ 30.251500][ T294] br0: port 2(veth2) entered disabled state [ 30.251938][ T294] veth2: entered allmulticast mode [ 30.255291][ T294] veth2: entered promiscuous mode [ 30.524512][ T49] br0: port 1(veth1) entered blocking state [ 30.524952][ T49] br0: port 1(veth1) entered forwarding state [ 30.643436][ T51] br0: port 2(veth2) entered blocking state [ 30.643703][ T51] br0: port 2(veth2) entered forwarding state [ 45.869518][ C3] [ 45.869689][ C3] ======================================================== [ 45.869980][ C3] WARNING: possible irq lock inversion dependency detected [ 45.870198][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.870349][ C3] -------------------------------------------------------- [ 45.870554][ C3] swapper/3/0 just changed the state of lock: [ 45.870725][ C3] ffff8880079fac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.871089][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.871293][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.871298][ C3] [ 45.871298][ C3] [ 45.871298][ C3] and interrupts could create inverse lock ordering between them. [ 45.871298][ C3] [ 45.871820][ C3] [ 45.871820][ C3] other info that might help us debug this: [ 45.872018][ C3] Chain exists of: [ 45.872018][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.872018][ C3] [ 45.872317][ C3] Possible interrupt unsafe locking scenario: [ 45.872317][ C3] [ 45.872538][ C3] CPU0 CPU1 [ 45.872675][ C3] ---- ---- [ 45.872811][ C3] lock(&p->alloc_lock); [ 45.872916][ C3] local_irq_disable(); [ 45.873091][ C3] lock(&br->lock); [ 45.873264][ C3] lock(lweventlist_lock); [ 45.873434][ C3] [ 45.873537][ C3] lock(&br->lock); [ 45.873651][ C3] [ 45.873651][ C3] *** DEADLOCK *** [ 45.873651][ C3] [ 45.873853][ C3] 1 lock held by swapper/3/0: [ 45.873994][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.874283][ C3] [ 45.874283][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.874519][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.874671][ C3] HARDIRQ-ON-W at: [ 45.874782][ C3] __lock_acquire+0x797/0x1570 [ 45.874967][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.875142][ C3] _raw_spin_lock+0x30/0x40 [ 45.875320][ C3] set_mems_allowed+0x1d/0x210 [ 45.875499][ C3] kernel_init_freeable+0x72/0x310 [ 45.875681][ C3] kernel_init+0x20/0x200 [ 45.875856][ C3] ret_from_fork+0x31/0x70 [ 45.876034][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.876207][ C3] SOFTIRQ-ON-W at: [ 45.876311][ C3] __lock_acquire+0x797/0x1570 [ 45.876484][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.876659][ C3] _raw_spin_lock+0x30/0x40 [ 45.876839][ C3] set_mems_allowed+0x1d/0x210 [ 45.877014][ C3] kernel_init_freeable+0x72/0x310 [ 45.877191][ C3] kernel_init+0x20/0x200 [ 45.877366][ C3] ret_from_fork+0x31/0x70 [ 45.877545][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.877717][ C3] INITIAL USE at: [ 45.877829][ C3] __lock_acquire+0x797/0x1570 [ 45.878007][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.878186][ C3] _raw_spin_lock+0x30/0x40 [ 45.878364][ C3] set_mems_allowed+0x1d/0x210 [ 45.878556][ C3] kernel_init_freeable+0x72/0x310 [ 45.878730][ C3] kernel_init+0x20/0x200 [ 45.878911][ C3] ret_from_fork+0x31/0x70 [ 45.879092][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.879267][ C3] } [ 45.879339][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.879549][ C3] ... acquired at: [ 45.879656][ C3] __lock_acquire+0xaf0/0x1570 [ 45.879800][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.879943][ C3] _raw_spin_lock+0x30/0x40 [ 45.880083][ C3] __get_task_comm+0x27/0x70 [ 45.880225][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.880368][ C3] linkwatch_fire_event+0x196/0x200 [ 45.880510][ C3] veth_newlink+0x367/0x830 [veth] [ 45.880662][ C3] rtnl_newlink_create+0x341/0x850 [ 45.880801][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.880942][ C3] rtnl_newlink+0x63/0xa0 [ 45.881083][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.881219][ C3] netlink_rcv_skb+0x130/0x360 [ 45.881361][ C3] netlink_unicast+0x449/0x710 [ 45.881506][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.881647][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.881787][ C3] ___sys_sendmsg+0xee/0x170 [ 45.881928][ C3] __sys_sendmsg+0xcd/0x170 [ 45.882068][ C3] do_syscall_64+0xc6/0x1e0 [ 45.882207][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.882390][ C3] [ 45.882460][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.882602][ C3] INITIAL USE at: [ 45.882708][ C3] __lock_acquire+0x797/0x1570 [ 45.882883][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.883058][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.883235][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.883416][ C3] rtnl_getlink+0x4c9/0x970 [ 45.883590][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.883762][ C3] netlink_rcv_skb+0x130/0x360 [ 45.883936][ C3] netlink_unicast+0x449/0x710 [ 45.884109][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.884280][ C3] __sys_sendto+0x37d/0x410 [ 45.884461][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.884632][ C3] do_syscall_64+0xc6/0x1e0 [ 45.884803][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.885013][ C3] } [ 45.885082][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.885290][ C3] ... acquired at: [ 45.885392][ C3] __lock_acquire+0xaf0/0x1570 [ 45.885532][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.885674][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.885812][ C3] linkwatch_fire_event+0x74/0x200 [ 45.885949][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.886161][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.886370][ C3] dev_set_mac_address+0x28a/0x410 [ 45.886509][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.886668][ C3] do_setlink+0x17b4/0x21e0 [ 45.886810][ C3] rtnl_setlink+0x1f7/0x310 [ 45.886949][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.887085][ C3] netlink_rcv_skb+0x130/0x360 [ 45.887221][ C3] netlink_unicast+0x449/0x710 [ 45.887359][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.887504][ C3] __sys_sendto+0x37d/0x410 [ 45.887644][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.887782][ C3] do_syscall_64+0xc6/0x1e0 [ 45.887927][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.888103][ C3] [ 45.888173][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.888316][ C3] HARDIRQ-ON-W at: [ 45.888419][ C3] __lock_acquire+0x797/0x1570 [ 45.888606][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.888785][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.888965][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.889215][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.889463][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.889672][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.889881][ C3] rtnl_newlink_create+0x341/0x850 [ 45.890058][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.890235][ C3] rtnl_newlink+0x63/0xa0 [ 45.890410][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.890580][ C3] netlink_rcv_skb+0x130/0x360 [ 45.890755][ C3] netlink_unicast+0x449/0x710 [ 45.890929][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.891104][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.891282][ C3] ___sys_sendmsg+0xee/0x170 [ 45.891459][ C3] __sys_sendmsg+0xcd/0x170 [ 45.891631][ C3] do_syscall_64+0xc6/0x1e0 [ 45.891805][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.892012][ C3] IN-SOFTIRQ-W at: [ 45.892116][ C3] __lock_acquire+0x797/0x1570 [ 45.892290][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.892466][ C3] _raw_spin_lock+0x30/0x40 [ 45.892645][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.892888][ C3] call_timer_fn+0x13b/0x230 [ 45.893071][ C3] __run_timers+0x545/0x810 [ 45.893244][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.893415][ C3] __do_softirq+0x1f8/0x5df [ 45.893585][ C3] irq_exit_rcu+0x97/0xc0 [ 45.893766][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.893969][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.894176][ C3] default_idle+0xf/0x20 [ 45.894349][ C3] default_idle_call+0x6d/0xb0 [ 45.894520][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.894694][ C3] do_idle+0xf9/0x160 [ 45.894839][ C3] cpu_startup_entry+0x54/0x60 [ 45.895010][ C3] start_secondary+0x21c/0x2b0 [ 45.895184][ C3] common_startup_64+0x12c/0x138 [ 45.895357][ C3] INITIAL USE at: [ 45.895463][ C3] __lock_acquire+0x797/0x1570 [ 45.895634][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.895806][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.895984][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.896229][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.896471][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.896681][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.896890][ C3] rtnl_newlink_create+0x341/0x850 [ 45.897059][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.897234][ C3] rtnl_newlink+0x63/0xa0 [ 45.897512][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.897686][ C3] netlink_rcv_skb+0x130/0x360 [ 45.897862][ C3] netlink_unicast+0x449/0x710 [ 45.898035][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.898206][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.898377][ C3] ___sys_sendmsg+0xee/0x170 [ 45.898565][ C3] __sys_sendmsg+0xcd/0x170 [ 45.898826][ C3] do_syscall_64+0xc6/0x1e0 [ 45.899003][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.899215][ C3] } [ 45.899286][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.899659][ C3] ... acquired at: [ 45.899761][ C3] mark_lock+0x28d/0x3e0 [ 45.899911][ C3] mark_usage+0xd9/0x2a0 [ 45.900049][ C3] __lock_acquire+0x797/0x1570 [ 45.900190][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.900328][ C3] _raw_spin_lock+0x30/0x40 [ 45.900472][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.900683][ C3] call_timer_fn+0x13b/0x230 [ 45.900830][ C3] __run_timers+0x545/0x810 [ 45.900968][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.901119][ C3] __do_softirq+0x1f8/0x5df [ 45.901255][ C3] irq_exit_rcu+0x97/0xc0 [ 45.901475][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.901650][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.901825][ C3] default_idle+0xf/0x20 [ 45.901972][ C3] default_idle_call+0x6d/0xb0 [ 45.902109][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.902249][ C3] do_idle+0xf9/0x160 [ 45.902362][ C3] cpu_startup_entry+0x54/0x60 [ 45.902500][ C3] start_secondary+0x21c/0x2b0 [ 45.902719][ C3] common_startup_64+0x12c/0x138 [ 45.902860][ C3] [ 45.902930][ C3] [ 45.902930][ C3] stack backtrace: [ 45.903099][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.903386][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.903699][ C3] Call Trace: [ 45.903803][ C3] [ 45.903876][ C3] dump_stack_lvl+0x82/0xd0 [ 45.904096][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.904266][ C3] ? common_startup_64+0x12c/0x138 [ 45.904409][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.904662][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.904798][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.904944][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.905083][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.905223][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.905438][ C3] ? stack_trace_save+0x94/0xd0 [ 45.905576][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.905715][ C3] ? save_trace+0x8f/0x5b0 [ 45.905854][ C3] mark_lock+0x28d/0x3e0 [ 45.906037][ C3] mark_usage+0xd9/0x2a0 [ 45.906142][ C3] __lock_acquire+0x797/0x1570 [ 45.906285][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.906427][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.906744][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.906883][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.907090][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.907227][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.907449][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.907661][ C3] ? lock_acquire+0x32/0xc0 [ 45.907802][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908018][ C3] _raw_spin_lock+0x30/0x40 [ 45.908156][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908370][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908583][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.908905][ C3] call_timer_fn+0x13b/0x230 [ 45.909049][ C3] ? call_timer_fn+0xe8/0x230 [ 45.909188][ C3] ? call_timer_fn+0xe8/0x230 [ 45.909331][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.909544][ C3] ? mark_lock+0x38/0x3e0 [ 45.909652][ C3] __run_timers+0x545/0x810 [ 45.909790][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.910066][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.910372][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.910598][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.910813][ C3] ? lock_acquire+0x32/0xc0 [ 45.910969][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 45.911113][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.911248][ C3] __do_softirq+0x1f8/0x5df [ 45.911383][ C3] irq_exit_rcu+0x97/0xc0 [ 45.911484][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.911637][ C3] [ 45.911710][ C3] [ 45.911863][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.912037][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.912188][ C3] 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 [ 45.912762][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 45.912940][ C3] RAX: 00000000000743cf RBX: 1ffff9200002dfc1 RCX: ffffffff8730e9d5 [ 45.913234][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84caa4a4 [ 45.913445][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 45.913656][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 45.913943][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.914155][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.914302][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.914443][ C3] default_idle_call+0x6d/0xb0 [ 45.914655][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.914797][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.914942][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.915090][ C3] do_idle+0xf9/0x160 [ 45.915267][ C3] cpu_startup_entry+0x54/0x60 [ 45.915403][ C3] start_secondary+0x21c/0x2b0 [ 45.915545][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.915682][ C3] common_startup_64+0x12c/0x138 [ 45.915897][ C3] [ 60.047643][ T354] GACT probability NOT on [ 91.417674][ T531] br1: port 1(veth0) entered blocking state [ 91.417892][ T531] br1: port 1(veth0) entered disabled state [ 91.418081][ T531] veth0: entered allmulticast mode [ 91.420392][ T531] veth0: entered promiscuous mode [ 91.542310][ T532] br1: port 1(veth0) entered blocking state [ 91.542560][ T532] br1: port 1(veth0) entered forwarding state [ 93.890379][ T537] veth0: left allmulticast mode [ 93.890554][ T537] veth0: left promiscuous mode [ 93.890816][ T537] br1: port 1(veth0) entered disabled state [ 106.593178][ T621] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 107.019094][ T627] br0: port 2(veth2) entered disabled state [ 107.141579][ T628] br0: port 1(veth1) entered disabled state [ 107.244585][ T629] veth2: left allmulticast mode [ 107.244769][ T629] veth2: left promiscuous mode [ 107.245023][ T629] br0: port 2(veth2) entered disabled state [ 107.246210][ T629] veth1: left allmulticast mode [ 107.246610][ T629] veth1: left promiscuous mode [ 107.246847][ T629] br0: port 1(veth1) entered disabled state