[ 27.193633][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 29.867578][ T299] br0: port 1(veth1) entered blocking state [ 29.868052][ T299] br0: port 1(veth1) entered disabled state [ 29.868389][ T299] veth1: entered allmulticast mode [ 29.877635][ T299] veth1: entered promiscuous mode [ 30.010107][ T301] br0: port 2(veth2) entered blocking state [ 30.010479][ T301] br0: port 2(veth2) entered disabled state [ 30.010810][ T301] veth2: entered allmulticast mode [ 30.013582][ T301] veth2: entered promiscuous mode [ 30.261245][ T50] br0: port 1(veth1) entered blocking state [ 30.261649][ T50] br0: port 1(veth1) entered forwarding state [ 30.387442][ T49] br0: port 2(veth2) entered blocking state [ 30.387807][ T49] br0: port 2(veth2) entered forwarding state [ 45.355827][ C3] [ 45.356049][ C3] ======================================================== [ 45.356266][ C3] WARNING: possible irq lock inversion dependency detected [ 45.356468][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.356605][ C3] -------------------------------------------------------- [ 45.356805][ C3] swapper/3/0 just changed the state of lock: [ 45.356969][ C3] ffff8880052cac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.357331][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.357528][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.357532][ C3] [ 45.357532][ C3] [ 45.357532][ C3] and interrupts could create inverse lock ordering between them. [ 45.357532][ C3] [ 45.358016][ C3] [ 45.358016][ C3] other info that might help us debug this: [ 45.358215][ C3] Chain exists of: [ 45.358215][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.358215][ C3] [ 45.358518][ C3] Possible interrupt unsafe locking scenario: [ 45.358518][ C3] [ 45.358721][ C3] CPU0 CPU1 [ 45.358858][ C3] ---- ---- [ 45.358989][ C3] lock(&p->alloc_lock); [ 45.359096][ C3] local_irq_disable(); [ 45.359261][ C3] lock(&br->lock); [ 45.359428][ C3] lock(lweventlist_lock); [ 45.359595][ C3] [ 45.359697][ C3] lock(&br->lock); [ 45.359798][ C3] [ 45.359798][ C3] *** DEADLOCK *** [ 45.359798][ C3] [ 45.359994][ C3] 1 lock held by swapper/3/0: [ 45.360133][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.360410][ C3] [ 45.360410][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.360641][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.360778][ C3] HARDIRQ-ON-W at: [ 45.360883][ C3] __lock_acquire+0x797/0x1570 [ 45.361056][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.361232][ C3] _raw_spin_lock+0x30/0x40 [ 45.361491][ C3] set_mems_allowed+0x1d/0x210 [ 45.361669][ C3] kernel_init_freeable+0x72/0x310 [ 45.361840][ C3] kernel_init+0x20/0x200 [ 45.362017][ C3] ret_from_fork+0x31/0x70 [ 45.362188][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.362361][ C3] SOFTIRQ-ON-W at: [ 45.362465][ C3] __lock_acquire+0x797/0x1570 [ 45.362638][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.362805][ C3] _raw_spin_lock+0x30/0x40 [ 45.362974][ C3] set_mems_allowed+0x1d/0x210 [ 45.363145][ C3] kernel_init_freeable+0x72/0x310 [ 45.363318][ C3] kernel_init+0x20/0x200 [ 45.363487][ C3] ret_from_fork+0x31/0x70 [ 45.363668][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.363836][ C3] INITIAL USE at: [ 45.363937][ C3] __lock_acquire+0x797/0x1570 [ 45.364129][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.364309][ C3] _raw_spin_lock+0x30/0x40 [ 45.364477][ C3] set_mems_allowed+0x1d/0x210 [ 45.364646][ C3] kernel_init_freeable+0x72/0x310 [ 45.364815][ C3] kernel_init+0x20/0x200 [ 45.364983][ C3] ret_from_fork+0x31/0x70 [ 45.365158][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.365331][ C3] } [ 45.365403][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.365610][ C3] ... acquired at: [ 45.365711][ C3] __lock_acquire+0xaf0/0x1570 [ 45.365847][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.365983][ C3] _raw_spin_lock+0x30/0x40 [ 45.366116][ C3] __get_task_comm+0x27/0x70 [ 45.366253][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.366392][ C3] linkwatch_fire_event+0x196/0x200 [ 45.366529][ C3] veth_newlink+0x367/0x830 [veth] [ 45.366675][ C3] rtnl_newlink_create+0x341/0x850 [ 45.366809][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.366941][ C3] rtnl_newlink+0x63/0xa0 [ 45.367083][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.367218][ C3] netlink_rcv_skb+0x130/0x360 [ 45.367354][ C3] netlink_unicast+0x449/0x710 [ 45.367492][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.367625][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.367762][ C3] ___sys_sendmsg+0xee/0x170 [ 45.367897][ C3] __sys_sendmsg+0xcd/0x170 [ 45.368031][ C3] do_syscall_64+0xc6/0x1e0 [ 45.368165][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.368335][ C3] [ 45.368411][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.368550][ C3] INITIAL USE at: [ 45.368656][ C3] __lock_acquire+0x797/0x1570 [ 45.368826][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.368996][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.369164][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.369337][ C3] rtnl_getlink+0x4c9/0x970 [ 45.369508][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.369680][ C3] netlink_rcv_skb+0x130/0x360 [ 45.369846][ C3] netlink_unicast+0x449/0x710 [ 45.370017][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.370187][ C3] __sys_sendto+0x37d/0x410 [ 45.370360][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.370552][ C3] do_syscall_64+0xc6/0x1e0 [ 45.370724][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.370927][ C3] } [ 45.370995][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.371196][ C3] ... acquired at: [ 45.371297][ C3] __lock_acquire+0xaf0/0x1570 [ 45.371433][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.371566][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.371704][ C3] linkwatch_fire_event+0x74/0x200 [ 45.371841][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.372057][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.372258][ C3] dev_set_mac_address+0x28a/0x410 [ 45.372397][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.372533][ C3] do_setlink+0x17b4/0x21e0 [ 45.372668][ C3] rtnl_setlink+0x1f7/0x310 [ 45.372802][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.372938][ C3] netlink_rcv_skb+0x130/0x360 [ 45.373074][ C3] netlink_unicast+0x449/0x710 [ 45.373206][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.373340][ C3] __sys_sendto+0x37d/0x410 [ 45.373482][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.373621][ C3] do_syscall_64+0xc6/0x1e0 [ 45.373765][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.373932][ C3] [ 45.374021][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.374213][ C3] HARDIRQ-ON-W at: [ 45.374348][ C3] __lock_acquire+0x797/0x1570 [ 45.374573][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.374752][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.374935][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.375187][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.375440][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.375655][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.375859][ C3] rtnl_newlink_create+0x341/0x850 [ 45.376026][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.376192][ C3] rtnl_newlink+0x63/0xa0 [ 45.376362][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.376531][ C3] netlink_rcv_skb+0x130/0x360 [ 45.376703][ C3] netlink_unicast+0x449/0x710 [ 45.376875][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.377044][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.377212][ C3] ___sys_sendmsg+0xee/0x170 [ 45.377379][ C3] __sys_sendmsg+0xcd/0x170 [ 45.377551][ C3] do_syscall_64+0xc6/0x1e0 [ 45.377722][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.377931][ C3] IN-SOFTIRQ-W at: [ 45.378036][ C3] __lock_acquire+0x797/0x1570 [ 45.378216][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.378385][ C3] _raw_spin_lock+0x30/0x40 [ 45.378552][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.378791][ C3] call_timer_fn+0x13b/0x230 [ 45.378967][ C3] __run_timers+0x545/0x810 [ 45.379135][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.379304][ C3] __do_softirq+0x1f8/0x5df [ 45.379470][ C3] irq_exit_rcu+0x97/0xc0 [ 45.379639][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.379843][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.380050][ C3] default_idle+0xf/0x20 [ 45.380218][ C3] default_idle_call+0x6d/0xb0 [ 45.380387][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.380556][ C3] do_idle+0xf9/0x160 [ 45.380692][ C3] cpu_startup_entry+0x54/0x60 [ 45.380860][ C3] start_secondary+0x21c/0x2b0 [ 45.381032][ C3] common_startup_64+0x12c/0x138 [ 45.381205][ C3] INITIAL USE at: [ 45.381311][ C3] __lock_acquire+0x797/0x1570 [ 45.381479][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.381650][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.381816][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.382055][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.382299][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.382504][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.382707][ C3] rtnl_newlink_create+0x341/0x850 [ 45.382885][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.383053][ C3] rtnl_newlink+0x63/0xa0 [ 45.383221][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.383393][ C3] netlink_rcv_skb+0x130/0x360 [ 45.383562][ C3] netlink_unicast+0x449/0x710 [ 45.383729][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.383895][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.384083][ C3] ___sys_sendmsg+0xee/0x170 [ 45.384251][ C3] __sys_sendmsg+0xcd/0x170 [ 45.384417][ C3] do_syscall_64+0xc6/0x1e0 [ 45.384673][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.384876][ C3] } [ 45.384944][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.385208][ C3] ... acquired at: [ 45.385383][ C3] mark_lock+0x28d/0x3e0 [ 45.385518][ C3] mark_usage+0xd9/0x2a0 [ 45.385651][ C3] __lock_acquire+0x797/0x1570 [ 45.385785][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.386001][ C3] _raw_spin_lock+0x30/0x40 [ 45.386135][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.386339][ C3] call_timer_fn+0x13b/0x230 [ 45.386472][ C3] __run_timers+0x545/0x810 [ 45.386756][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.386924][ C3] __do_softirq+0x1f8/0x5df [ 45.387055][ C3] irq_exit_rcu+0x97/0xc0 [ 45.387191][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.387446][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.387615][ C3] default_idle+0xf/0x20 [ 45.387748][ C3] default_idle_call+0x6d/0xb0 [ 45.387880][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.388089][ C3] do_idle+0xf9/0x160 [ 45.388194][ C3] cpu_startup_entry+0x54/0x60 [ 45.388338][ C3] start_secondary+0x21c/0x2b0 [ 45.388489][ C3] common_startup_64+0x12c/0x138 [ 45.388631][ C3] [ 45.388775][ C3] [ 45.388775][ C3] stack backtrace: [ 45.388940][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.389144][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.389516][ C3] Call Trace: [ 45.389617][ C3] [ 45.389689][ C3] dump_stack_lvl+0x82/0xd0 [ 45.389825][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.390071][ C3] ? common_startup_64+0x12c/0x138 [ 45.390209][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.390372][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.390506][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.390715][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.390853][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.390988][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.391126][ C3] ? stack_trace_save+0x94/0xd0 [ 45.391261][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.391471][ C3] ? save_trace+0x8f/0x5b0 [ 45.391615][ C3] mark_lock+0x28d/0x3e0 [ 45.391718][ C3] mark_usage+0xd9/0x2a0 [ 45.391821][ C3] __lock_acquire+0x797/0x1570 [ 45.392032][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.392165][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.392408][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.392545][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.392824][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.392957][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.393091][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.393291][ C3] ? lock_acquire+0x32/0xc0 [ 45.393510][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.393725][ C3] _raw_spin_lock+0x30/0x40 [ 45.393866][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.394097][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.394376][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.394610][ C3] call_timer_fn+0x13b/0x230 [ 45.394753][ C3] ? call_timer_fn+0xe8/0x230 [ 45.394964][ C3] ? call_timer_fn+0xe8/0x230 [ 45.395103][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.395243][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.395385][ C3] __run_timers+0x545/0x810 [ 45.395593][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.395835][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.395969][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.396101][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.396311][ C3] ? lock_acquire+0x32/0xc0 [ 45.396443][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 45.396585][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.396718][ C3] __do_softirq+0x1f8/0x5df [ 45.396929][ C3] irq_exit_rcu+0x97/0xc0 [ 45.397062][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.397196][ C3] [ 45.397266][ C3] [ 45.397333][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.397501][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.397800][ 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 [ 45.398357][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 45.398554][ C3] RAX: 0000000000082901 RBX: 1ffff9200002dfc1 RCX: ffffffff8570e9d5 [ 45.398758][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff830aa4a4 [ 45.399040][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 45.399238][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 45.399437][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.399718][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.399852][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.399987][ C3] default_idle_call+0x6d/0xb0 [ 45.400126][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.400333][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.400469][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.400605][ C3] do_idle+0xf9/0x160 [ 45.400706][ C3] cpu_startup_entry+0x54/0x60 [ 45.400843][ C3] start_secondary+0x21c/0x2b0 [ 45.401053][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.401195][ C3] common_startup_64+0x12c/0x138 [ 45.401340][ C3] [ 61.644519][ T376] br0: port 2(veth2) entered disabled state [ 61.738620][ T377] br0: port 1(veth1) entered disabled state [ 61.825681][ T379] veth2: left allmulticast mode [ 61.825948][ T379] veth2: left promiscuous mode [ 61.826207][ T379] br0: port 2(veth2) entered disabled state [ 61.832048][ T379] veth1: left allmulticast mode [ 61.832204][ T379] veth1: left promiscuous mode [ 61.832438][ T379] br0: port 1(veth1) entered disabled state