[ 29.951403][ T295] br1: port 1(veth1) entered blocking state [ 29.951801][ T295] br1: port 1(veth1) entered disabled state [ 29.952120][ T295] veth1: entered allmulticast mode [ 29.955555][ T295] veth1: entered promiscuous mode [ 30.070560][ T51] br1: port 1(veth1) entered blocking state [ 30.070930][ T51] br1: port 1(veth1) entered forwarding state [ 30.190142][ T297] br1: port 2(veth2) entered blocking state [ 30.190401][ T297] br1: port 2(veth2) entered disabled state [ 30.192083][ T297] veth2: entered allmulticast mode [ 30.193909][ T297] veth2: entered promiscuous mode [ 30.325215][ T51] br1: port 2(veth2) entered blocking state [ 30.325619][ T51] br1: port 2(veth2) entered forwarding state [ 39.913682][ T330] GACT probability NOT on [ 45.355624][ C1] [ 45.355776][ C1] ======================================================== [ 45.356003][ C1] WARNING: possible irq lock inversion dependency detected [ 45.356240][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 45.356388][ C1] -------------------------------------------------------- [ 45.356603][ C1] swapper/1/0 just changed the state of lock: [ 45.356787][ C1] ffff8880062b2c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.357171][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.357396][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 45.357402][ C1] [ 45.357402][ C1] [ 45.357402][ C1] and interrupts could create inverse lock ordering between them. [ 45.357402][ C1] [ 45.357938][ C1] [ 45.357938][ C1] other info that might help us debug this: [ 45.358145][ C1] Chain exists of: [ 45.358145][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.358145][ C1] [ 45.358487][ C1] Possible interrupt unsafe locking scenario: [ 45.358487][ C1] [ 45.358706][ C1] CPU0 CPU1 [ 45.358851][ C1] ---- ---- [ 45.359000][ C1] lock(&p->alloc_lock); [ 45.359114][ C1] local_irq_disable(); [ 45.359298][ C1] lock(&br->lock); [ 45.359481][ C1] lock(lweventlist_lock); [ 45.359669][ C1] [ 45.359781][ C1] lock(&br->lock); [ 45.359897][ C1] [ 45.359897][ C1] *** DEADLOCK *** [ 45.359897][ C1] [ 45.360117][ C1] 1 lock held by swapper/1/0: [ 45.360278][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.360589][ C1] [ 45.360589][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 45.360851][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.361013][ C1] HARDIRQ-ON-W at: [ 45.361125][ C1] __lock_acquire+0x797/0x1570 [ 45.361317][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.361515][ C1] _raw_spin_lock+0x30/0x40 [ 45.361710][ C1] set_mems_allowed+0x1d/0x210 [ 45.361900][ C1] kernel_init_freeable+0x72/0x310 [ 45.362081][ C1] kernel_init+0x20/0x200 [ 45.362266][ C1] ret_from_fork+0x31/0x70 [ 45.362452][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.362657][ C1] SOFTIRQ-ON-W at: [ 45.362768][ C1] __lock_acquire+0x797/0x1570 [ 45.362952][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.363145][ C1] _raw_spin_lock+0x30/0x40 [ 45.363334][ C1] set_mems_allowed+0x1d/0x210 [ 45.363519][ C1] kernel_init_freeable+0x72/0x310 [ 45.363701][ C1] kernel_init+0x20/0x200 [ 45.363886][ C1] ret_from_fork+0x31/0x70 [ 45.364070][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.364256][ C1] INITIAL USE at: [ 45.364368][ C1] __lock_acquire+0x797/0x1570 [ 45.364568][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.364753][ C1] _raw_spin_lock+0x30/0x40 [ 45.364939][ C1] set_mems_allowed+0x1d/0x210 [ 45.365119][ C1] kernel_init_freeable+0x72/0x310 [ 45.365308][ C1] kernel_init+0x20/0x200 [ 45.365511][ C1] ret_from_fork+0x31/0x70 [ 45.365703][ C1] ret_from_fork_asm+0x1a/0x30 [ 45.365889][ C1] } [ 45.365966][ C1] ... key at: [] __key.387+0x0/0x40 [ 45.366192][ C1] ... acquired at: [ 45.366301][ C1] __lock_acquire+0xaf0/0x1570 [ 45.366483][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.366622][ C1] _raw_spin_lock+0x30/0x40 [ 45.366773][ C1] __get_task_comm+0x27/0x70 [ 45.366913][ C1] ref_tracker_alloc+0x2ee/0x490 [ 45.367058][ C1] linkwatch_fire_event+0x196/0x200 [ 45.367198][ C1] veth_newlink+0x367/0x830 [veth] [ 45.367341][ C1] rtnl_newlink_create+0x341/0x850 [ 45.367498][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.367642][ C1] rtnl_newlink+0x63/0xa0 [ 45.367779][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.367931][ C1] netlink_rcv_skb+0x130/0x360 [ 45.368072][ C1] netlink_unicast+0x449/0x710 [ 45.368204][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.368341][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.368481][ C1] ___sys_sendmsg+0xee/0x170 [ 45.368626][ C1] __sys_sendmsg+0xcd/0x170 [ 45.368766][ C1] do_syscall_64+0xc6/0x1e0 [ 45.368907][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.369080][ C1] [ 45.369157][ C1] -> (lweventlist_lock){....}-{2:2} { [ 45.369302][ C1] INITIAL USE at: [ 45.369419][ C1] __lock_acquire+0x797/0x1570 [ 45.369657][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.369927][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.370211][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 45.370483][ C1] rtnl_getlink+0x4c9/0x970 [ 45.370753][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.371036][ C1] netlink_rcv_skb+0x130/0x360 [ 45.371306][ C1] netlink_unicast+0x449/0x710 [ 45.371581][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.371860][ C1] __sys_sendto+0x37d/0x410 [ 45.372139][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.372406][ C1] do_syscall_64+0xc6/0x1e0 [ 45.372689][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.373024][ C1] } [ 45.373135][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.373460][ C1] ... acquired at: [ 45.373618][ C1] __lock_acquire+0xaf0/0x1570 [ 45.373839][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.374058][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.374285][ C1] linkwatch_fire_event+0x74/0x200 [ 45.374496][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.374845][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.375184][ C1] dev_set_mac_address+0x28a/0x410 [ 45.375404][ C1] dev_set_mac_address_user+0x31/0x50 [ 45.375632][ C1] do_setlink+0x17b4/0x21e0 [ 45.375855][ C1] rtnl_setlink+0x1f7/0x310 [ 45.376070][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.376275][ C1] netlink_rcv_skb+0x130/0x360 [ 45.376492][ C1] netlink_unicast+0x449/0x710 [ 45.376708][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.376923][ C1] __sys_sendto+0x37d/0x410 [ 45.377144][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 45.377358][ C1] do_syscall_64+0xc6/0x1e0 [ 45.377573][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.377836][ C1] [ 45.377944][ C1] -> (&br->lock){+.-.}-{2:2} { [ 45.378165][ C1] HARDIRQ-ON-W at: [ 45.378335][ C1] __lock_acquire+0x797/0x1570 [ 45.378614][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.378884][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.379162][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 45.379561][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.379962][ C1] br_changelink+0x36c/0x1360 [bridge] [ 45.380302][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 45.380665][ C1] rtnl_newlink_create+0x341/0x850 [ 45.380941][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.381212][ C1] rtnl_newlink+0x63/0xa0 [ 45.381476][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.381745][ C1] netlink_rcv_skb+0x130/0x360 [ 45.382018][ C1] netlink_unicast+0x449/0x710 [ 45.382284][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.382548][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.382846][ C1] ___sys_sendmsg+0xee/0x170 [ 45.383129][ C1] __sys_sendmsg+0xcd/0x170 [ 45.383417][ C1] do_syscall_64+0xc6/0x1e0 [ 45.383700][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.384038][ C1] IN-SOFTIRQ-W at: [ 45.384211][ C1] __lock_acquire+0x797/0x1570 [ 45.384492][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.384788][ C1] _raw_spin_lock+0x30/0x40 [ 45.385076][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.385483][ C1] call_timer_fn+0x13b/0x230 [ 45.385767][ C1] __run_timers+0x545/0x810 [ 45.386054][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.386332][ C1] __do_softirq+0x1f8/0x5df [ 45.386607][ C1] irq_exit_rcu+0x97/0xc0 [ 45.386876][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.387197][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.387511][ C1] default_idle+0xf/0x20 [ 45.387782][ C1] default_idle_call+0x6d/0xb0 [ 45.388057][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.388337][ C1] do_idle+0xf9/0x160 [ 45.388559][ C1] cpu_startup_entry+0x54/0x60 [ 45.388831][ C1] start_secondary+0x21c/0x2b0 [ 45.389105][ C1] common_startup_64+0x12c/0x138 [ 45.389375][ C1] INITIAL USE at: [ 45.389539][ C1] __lock_acquire+0x797/0x1570 [ 45.389813][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.390102][ C1] _raw_spin_lock_bh+0x38/0x50 [ 45.390392][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 45.390790][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.391181][ C1] br_changelink+0x36c/0x1360 [bridge] [ 45.391516][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 45.391854][ C1] rtnl_newlink_create+0x341/0x850 [ 45.392135][ C1] __rtnl_newlink+0xac9/0xd80 [ 45.392408][ C1] rtnl_newlink+0x63/0xa0 [ 45.392692][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.392960][ C1] netlink_rcv_skb+0x130/0x360 [ 45.393232][ C1] netlink_unicast+0x449/0x710 [ 45.393499][ C1] netlink_sendmsg+0x723/0xbe0 [ 45.393769][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 45.394049][ C1] ___sys_sendmsg+0xee/0x170 [ 45.394320][ C1] __sys_sendmsg+0xcd/0x170 [ 45.394589][ C1] do_syscall_64+0xc6/0x1e0 [ 45.394861][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.395194][ C1] } [ 45.395302][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.395738][ C1] ... acquired at: [ 45.395897][ C1] mark_lock+0x28d/0x3e0 [ 45.396115][ C1] mark_usage+0xd9/0x2a0 [ 45.396325][ C1] __lock_acquire+0x797/0x1570 [ 45.396525][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.396745][ C1] _raw_spin_lock+0x30/0x40 [ 45.396975][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.397332][ C1] call_timer_fn+0x13b/0x230 [ 45.397549][ C1] __run_timers+0x545/0x810 [ 45.397776][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.397987][ C1] __do_softirq+0x1f8/0x5df [ 45.398196][ C1] irq_exit_rcu+0x97/0xc0 [ 45.398405][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.398687][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.398974][ C1] default_idle+0xf/0x20 [ 45.399190][ C1] default_idle_call+0x6d/0xb0 [ 45.399395][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.399623][ C1] do_idle+0xf9/0x160 [ 45.399792][ C1] cpu_startup_entry+0x54/0x60 [ 45.400012][ C1] start_secondary+0x21c/0x2b0 [ 45.400231][ C1] common_startup_64+0x12c/0x138 [ 45.400454][ C1] [ 45.400568][ C1] [ 45.400568][ C1] stack backtrace: [ 45.400831][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 45.401161][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.401650][ C1] Call Trace: [ 45.401817][ C1] [ 45.401932][ C1] dump_stack_lvl+0x82/0xd0 [ 45.402159][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.402433][ C1] ? common_startup_64+0x12c/0x138 [ 45.402667][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.402932][ C1] ? __pfx_usage_skip+0x10/0x10 [ 45.403149][ C1] ? __pfx_usage_match+0x10/0x10 [ 45.403361][ C1] ? arch_stack_walk+0x8c/0xf0 [ 45.403584][ C1] mark_lock_irq+0x4cd/0xa10 [ 45.403801][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.404016][ C1] ? stack_trace_save+0x94/0xd0 [ 45.404234][ C1] ? add_chain_cache+0x248/0x8b0 [ 45.404453][ C1] ? save_trace+0x8f/0x5b0 [ 45.404678][ C1] mark_lock+0x28d/0x3e0 [ 45.404845][ C1] mark_usage+0xd9/0x2a0 [ 45.405014][ C1] __lock_acquire+0x797/0x1570 [ 45.405232][ C1] ? __lock_acquire+0xaf0/0x1570 [ 45.405450][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.405837][ C1] lock_acquire.part.0+0xeb/0x330 [ 45.406064][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.406411][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.406640][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 45.406871][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.407214][ C1] ? lock_acquire+0x32/0xc0 [ 45.407436][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.407783][ C1] _raw_spin_lock+0x30/0x40 [ 45.408011][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.408266][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.408496][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.408754][ C1] call_timer_fn+0x13b/0x230 [ 45.408899][ C1] ? call_timer_fn+0xe8/0x230 [ 45.409042][ C1] ? call_timer_fn+0xe8/0x230 [ 45.409186][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 45.409329][ C1] ? mark_lock+0x38/0x3e0 [ 45.409481][ C1] __run_timers+0x545/0x810 [ 45.409627][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.409886][ C1] ? __pfx___run_timers+0x10/0x10 [ 45.410035][ C1] ? do_raw_spin_lock+0x131/0x270 [ 45.410179][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.410325][ C1] ? lock_acquire+0x32/0xc0 [ 45.410477][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 45.410620][ C1] run_timer_softirq+0xe8/0x1b0 [ 45.410761][ C1] __do_softirq+0x1f8/0x5df [ 45.410907][ C1] irq_exit_rcu+0x97/0xc0 [ 45.411019][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.411166][ C1] [ 45.411241][ C1] [ 45.411315][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.411502][ C1] RIP: 0010:default_idle+0xf/0x20 [ 45.411653][ C1] 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 [ 45.412167][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 45.412443][ C1] RAX: 000000000008e0b5 RBX: 1ffff92000029fc1 RCX: ffffffff9c90f9e5 [ 45.412678][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff9a2aa4a4 [ 45.412893][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f1709c [ 45.413184][ C1] R10: ffff88802f8b84e3 R11: ffff88802f8bdc80 R12: 0000000000000000 [ 45.413404][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 45.413622][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.413843][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 45.413988][ C1] default_idle_call+0x6d/0xb0 [ 45.414131][ C1] cpuidle_idle_call+0x1f4/0x280 [ 45.414273][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.414425][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.414646][ C1] do_idle+0xf9/0x160 [ 45.414760][ C1] cpu_startup_entry+0x54/0x60 [ 45.414904][ C1] start_secondary+0x21c/0x2b0 [ 45.415048][ C1] ? __pfx_start_secondary+0x10/0x10 [ 45.415271][ C1] common_startup_64+0x12c/0x138 [ 45.415426][ C1] [ 137.920008][ T1621] br1: port 2(veth2) entered disabled state [ 138.023091][ T1622] veth2: left allmulticast mode [ 138.023285][ T1622] veth2: left promiscuous mode [ 138.023556][ T1622] br1: port 2(veth2) entered disabled state [ 138.123776][ T1623] br1: port 1(veth1) entered disabled state [ 138.230746][ T1624] veth1: left allmulticast mode [ 138.230959][ T1624] veth1: left promiscuous mode [ 138.231230][ T1624] br1: port 1(veth1) entered disabled state