[ 27.794248][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 30.396922][ T298] br0: port 1(veth1) entered blocking state [ 30.397390][ T298] br0: port 1(veth1) entered disabled state [ 30.399317][ T298] veth1: entered allmulticast mode [ 30.401324][ T298] veth1: entered promiscuous mode [ 30.543685][ T300] br0: port 2(veth2) entered blocking state [ 30.543983][ T300] br0: port 2(veth2) entered disabled state [ 30.544260][ T300] veth2: entered allmulticast mode [ 30.546789][ T300] veth2: entered promiscuous mode [ 30.788313][ T50] br0: port 1(veth1) entered blocking state [ 30.788731][ T50] br0: port 1(veth1) entered forwarding state [ 30.914949][ T49] br0: port 2(veth2) entered blocking state [ 30.915196][ T49] br0: port 2(veth2) entered forwarding state [ 45.869674][ C3] [ 45.869925][ C3] ======================================================== [ 45.870158][ C3] WARNING: possible irq lock inversion dependency detected [ 45.870378][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.870524][ C3] -------------------------------------------------------- [ 45.870741][ C3] swapper/3/0 just changed the state of lock: [ 45.870924][ C3] ffff888037ca2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.871323][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.871552][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.871557][ C3] [ 45.871557][ C3] [ 45.871557][ C3] and interrupts could create inverse lock ordering between them. [ 45.871557][ C3] [ 45.872096][ C3] [ 45.872096][ C3] other info that might help us debug this: [ 45.872315][ C3] Chain exists of: [ 45.872315][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.872315][ C3] [ 45.872647][ C3] Possible interrupt unsafe locking scenario: [ 45.872647][ C3] [ 45.872867][ C3] CPU0 CPU1 [ 45.873015][ C3] ---- ---- [ 45.873159][ C3] lock(&p->alloc_lock); [ 45.873272][ C3] local_irq_disable(); [ 45.873462][ C3] lock(&br->lock); [ 45.873647][ C3] lock(lweventlist_lock); [ 45.873832][ C3] [ 45.873945][ C3] lock(&br->lock); [ 45.874059][ C3] [ 45.874059][ C3] *** DEADLOCK *** [ 45.874059][ C3] [ 45.874272][ C3] 1 lock held by swapper/3/0: [ 45.874418][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.874727][ C3] [ 45.874727][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.874983][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.875139][ C3] HARDIRQ-ON-W at: [ 45.875259][ C3] __lock_acquire+0x797/0x1570 [ 45.875450][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.875640][ C3] _raw_spin_lock+0x30/0x40 [ 45.875827][ C3] set_mems_allowed+0x1d/0x210 [ 45.876036][ C3] kernel_init_freeable+0x72/0x310 [ 45.876238][ C3] kernel_init+0x20/0x200 [ 45.876444][ C3] ret_from_fork+0x31/0x70 [ 45.876651][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.876856][ C3] SOFTIRQ-ON-W at: [ 45.876974][ C3] __lock_acquire+0x797/0x1570 [ 45.877182][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.877388][ C3] _raw_spin_lock+0x30/0x40 [ 45.877625][ C3] set_mems_allowed+0x1d/0x210 [ 45.877948][ C3] kernel_init_freeable+0x72/0x310 [ 45.878272][ C3] kernel_init+0x20/0x200 [ 45.878588][ C3] ret_from_fork+0x31/0x70 [ 45.878905][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.879221][ C3] INITIAL USE at: [ 45.879413][ C3] __lock_acquire+0x797/0x1570 [ 45.879727][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.880042][ C3] _raw_spin_lock+0x30/0x40 [ 45.880361][ C3] set_mems_allowed+0x1d/0x210 [ 45.880677][ C3] kernel_init_freeable+0x72/0x310 [ 45.880995][ C3] kernel_init+0x20/0x200 [ 45.881309][ C3] ret_from_fork+0x31/0x70 [ 45.881623][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.881941][ C3] } [ 45.882074][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.882451][ C3] ... acquired at: [ 45.882637][ C3] __lock_acquire+0xaf0/0x1570 [ 45.882893][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.883146][ C3] _raw_spin_lock+0x30/0x40 [ 45.883397][ C3] __get_task_comm+0x27/0x70 [ 45.883647][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.883894][ C3] linkwatch_fire_event+0x196/0x200 [ 45.884148][ C3] veth_newlink+0x367/0x830 [veth] [ 45.884403][ C3] rtnl_newlink_create+0x341/0x850 [ 45.884651][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.884899][ C3] rtnl_newlink+0x63/0xa0 [ 45.885149][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.885394][ C3] netlink_rcv_skb+0x130/0x360 [ 45.885644][ C3] netlink_unicast+0x449/0x710 [ 45.885895][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.886237][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.886392][ C3] ___sys_sendmsg+0xee/0x170 [ 45.886543][ C3] __sys_sendmsg+0xcd/0x170 [ 45.886704][ C3] do_syscall_64+0xc6/0x1e0 [ 45.886858][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.887049][ C3] [ 45.887125][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.887284][ C3] INITIAL USE at: [ 45.887405][ C3] __lock_acquire+0x797/0x1570 [ 45.887605][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.887795][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.887993][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.888190][ C3] rtnl_getlink+0x4c9/0x970 [ 45.888383][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.888572][ C3] netlink_rcv_skb+0x130/0x360 [ 45.888772][ C3] netlink_unicast+0x449/0x710 [ 45.888970][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.889163][ C3] __sys_sendto+0x37d/0x410 [ 45.889357][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.889543][ C3] do_syscall_64+0xc6/0x1e0 [ 45.889739][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.889989][ C3] } [ 45.890069][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.890298][ C3] ... acquired at: [ 45.890413][ C3] __lock_acquire+0xaf0/0x1570 [ 45.890568][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.890721][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.890873][ C3] linkwatch_fire_event+0x74/0x200 [ 45.891037][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.891280][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.891508][ C3] dev_set_mac_address+0x28a/0x410 [ 45.891660][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.891811][ C3] do_setlink+0x17b4/0x21e0 [ 45.891959][ C3] rtnl_setlink+0x1f7/0x310 [ 45.892117][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.892268][ C3] netlink_rcv_skb+0x130/0x360 [ 45.892439][ C3] netlink_unicast+0x449/0x710 [ 45.892605][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.892771][ C3] __sys_sendto+0x37d/0x410 [ 45.892935][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.893099][ C3] do_syscall_64+0xc6/0x1e0 [ 45.893271][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.893476][ C3] [ 45.893559][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.893733][ C3] HARDIRQ-ON-W at: [ 45.893869][ C3] __lock_acquire+0x797/0x1570 [ 45.894077][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.894282][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.894483][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.894775][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.895071][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.895321][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.895560][ C3] rtnl_newlink_create+0x341/0x850 [ 45.895760][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.895978][ C3] rtnl_newlink+0x63/0xa0 [ 45.896192][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.896389][ C3] netlink_rcv_skb+0x130/0x360 [ 45.896588][ C3] netlink_unicast+0x449/0x710 [ 45.896790][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.896984][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.897177][ C3] ___sys_sendmsg+0xee/0x170 [ 45.897370][ C3] __sys_sendmsg+0xcd/0x170 [ 45.897558][ C3] do_syscall_64+0xc6/0x1e0 [ 45.897751][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.898146][ C3] IN-SOFTIRQ-W at: [ 45.898261][ C3] __lock_acquire+0x797/0x1570 [ 45.898454][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.898733][ C3] _raw_spin_lock+0x30/0x40 [ 45.898935][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.899207][ C3] call_timer_fn+0x13b/0x230 [ 45.899473][ C3] __run_timers+0x545/0x810 [ 45.899669][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.899855][ C3] __do_softirq+0x1f8/0x5df [ 45.900042][ C3] irq_exit_rcu+0x97/0xc0 [ 45.900317][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.900552][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.900797][ C3] default_idle+0xf/0x20 [ 45.901078][ C3] default_idle_call+0x6d/0xb0 [ 45.901292][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.901502][ C3] do_idle+0xf9/0x160 [ 45.901755][ C3] cpu_startup_entry+0x54/0x60 [ 45.901958][ C3] start_secondary+0x21c/0x2b0 [ 45.902161][ C3] common_startup_64+0x12c/0x138 [ 45.902364][ C3] INITIAL USE at: [ 45.902568][ C3] __lock_acquire+0x797/0x1570 [ 45.902774][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.902978][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.903184][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.903569][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.903858][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.904107][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.904427][ C3] rtnl_newlink_create+0x341/0x850 [ 45.904618][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.904815][ C3] rtnl_newlink+0x63/0xa0 [ 45.905091][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.905279][ C3] netlink_rcv_skb+0x130/0x360 [ 45.905471][ C3] netlink_unicast+0x449/0x710 [ 45.905748][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.905954][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.906142][ C3] ___sys_sendmsg+0xee/0x170 [ 45.906336][ C3] __sys_sendmsg+0xcd/0x170 [ 45.906602][ C3] do_syscall_64+0xc6/0x1e0 [ 45.906801][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.907060][ C3] } [ 45.907142][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.907537][ C3] ... acquired at: [ 45.907657][ C3] mark_lock+0x28d/0x3e0 [ 45.907815][ C3] mark_usage+0xd9/0x2a0 [ 45.908039][ C3] __lock_acquire+0x797/0x1570 [ 45.908188][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.908334][ C3] _raw_spin_lock+0x30/0x40 [ 45.908484][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.908779][ C3] call_timer_fn+0x13b/0x230 [ 45.908929][ C3] __run_timers+0x545/0x810 [ 45.909075][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.909222][ C3] __do_softirq+0x1f8/0x5df [ 45.909368][ C3] irq_exit_rcu+0x97/0xc0 [ 45.909589][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.909772][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.909986][ C3] default_idle+0xf/0x20 [ 45.910293][ C3] default_idle_call+0x6d/0xb0 [ 45.910454][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.910611][ C3] do_idle+0xf9/0x160 [ 45.910730][ C3] cpu_startup_entry+0x54/0x60 [ 45.910891][ C3] start_secondary+0x21c/0x2b0 [ 45.911126][ C3] common_startup_64+0x12c/0x138 [ 45.911278][ C3] [ 45.911356][ C3] [ 45.911356][ C3] stack backtrace: [ 45.911551][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.911864][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.912205][ C3] Call Trace: [ 45.912321][ C3] [ 45.912399][ C3] dump_stack_lvl+0x82/0xd0 [ 45.912633][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.912839][ C3] ? common_startup_64+0x12c/0x138 [ 45.912996][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.913271][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.913427][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.913577][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.913734][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.913888][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.914115][ C3] ? stack_trace_save+0x94/0xd0 [ 45.914275][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.914429][ C3] ? save_trace+0x8f/0x5b0 [ 45.914576][ C3] mark_lock+0x28d/0x3e0 [ 45.914768][ C3] mark_usage+0xd9/0x2a0 [ 45.914883][ C3] __lock_acquire+0x797/0x1570 [ 45.915036][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.915186][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.915522][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.915673][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.915909][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.916067][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.916293][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.916520][ C3] ? lock_acquire+0x32/0xc0 [ 45.916668][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.916903][ C3] _raw_spin_lock+0x30/0x40 [ 45.917133][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.917360][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.917601][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.917951][ C3] call_timer_fn+0x13b/0x230 [ 45.918104][ C3] ? call_timer_fn+0xe8/0x230 [ 45.918256][ C3] ? call_timer_fn+0xe8/0x230 [ 45.918417][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.918654][ C3] ? mark_lock+0x38/0x3e0 [ 45.918775][ C3] __run_timers+0x545/0x810 [ 45.918937][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.919212][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.919446][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.919599][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.919754][ C3] ? lock_acquire+0x32/0xc0 [ 45.919912][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 45.920064][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.920301][ C3] __do_softirq+0x1f8/0x5df [ 45.920456][ C3] irq_exit_rcu+0x97/0xc0 [ 45.920578][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.920734][ C3] [ 45.920816][ C3] [ 45.920973][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.921157][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.921311][ 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 [ 45.921944][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 45.922135][ C3] RAX: 0000000000084efb RBX: 1ffff9200002dfc1 RCX: ffffffff93b0e9d5 [ 45.922516][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff914aa4a4 [ 45.922743][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f3709c [ 45.922968][ C3] R10: ffff88802f9b84e3 R11: ffff88802f9ad9b0 R12: 0000000000000000 [ 45.923273][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.923510][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.923660][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.923819][ C3] default_idle_call+0x6d/0xb0 [ 45.924049][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.924202][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.924353][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.924510][ C3] do_idle+0xf9/0x160 [ 45.924704][ C3] cpu_startup_entry+0x54/0x60 [ 45.924864][ C3] start_secondary+0x21c/0x2b0 [ 45.925016][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.925172][ C3] common_startup_64+0x12c/0x138 [ 45.925410][ C3] [ 62.264670][ T376] br0: port 2(veth2) entered disabled state [ 62.369730][ T377] br0: port 1(veth1) entered disabled state [ 62.472679][ T378] veth2: left allmulticast mode [ 62.472846][ T378] veth2: left promiscuous mode [ 62.473115][ T378] br0: port 2(veth2) entered disabled state [ 62.474076][ T378] veth1: left allmulticast mode [ 62.474216][ T378] veth1: left promiscuous mode [ 62.474458][ T378] br0: port 1(veth1) entered disabled state