[ 27.804012][ T284] br1: port 1(veth1) entered blocking state [ 27.804508][ T284] br1: port 1(veth1) entered disabled state [ 27.804854][ T284] veth1: entered allmulticast mode [ 27.807015][ T284] veth1: entered promiscuous mode [ 27.933422][ T50] br1: port 1(veth1) entered blocking state [ 27.933779][ T50] br1: port 1(veth1) entered forwarding state [ 28.076480][ T287] br1: port 2(veth2) entered blocking state [ 28.077118][ T287] br1: port 2(veth2) entered disabled state [ 28.077392][ T287] veth2: entered allmulticast mode [ 28.079280][ T287] veth2: entered promiscuous mode [ 28.206154][ T62] br1: port 2(veth2) entered blocking state [ 28.206503][ T62] br1: port 2(veth2) entered forwarding state [ 34.720447][ T306] GACT probability NOT on [ 43.313527][ C1] [ 43.313710][ C1] ======================================================== [ 43.313943][ C1] WARNING: possible irq lock inversion dependency detected [ 43.314158][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 43.314300][ C1] -------------------------------------------------------- [ 43.314505][ C1] swapper/1/0 just changed the state of lock: [ 43.314682][ C1] ffff888007a0ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.315058][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.315266][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 43.315271][ C1] [ 43.315271][ C1] [ 43.315271][ C1] and interrupts could create inverse lock ordering between them. [ 43.315271][ C1] [ 43.315794][ C1] [ 43.315794][ C1] other info that might help us debug this: [ 43.316002][ C1] Chain exists of: [ 43.316002][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.316002][ C1] [ 43.316320][ C1] Possible interrupt unsafe locking scenario: [ 43.316320][ C1] [ 43.316540][ C1] CPU0 CPU1 [ 43.316681][ C1] ---- ---- [ 43.316819][ C1] lock(&p->alloc_lock); [ 43.316937][ C1] local_irq_disable(); [ 43.317116][ C1] lock(&br->lock); [ 43.317296][ C1] lock(lweventlist_lock); [ 43.317484][ C1] [ 43.317591][ C1] lock(&br->lock); [ 43.317701][ C1] [ 43.317701][ C1] *** DEADLOCK *** [ 43.317701][ C1] [ 43.317908][ C1] 1 lock held by swapper/1/0: [ 43.318048][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.318347][ C1] [ 43.318347][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 43.318597][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.318746][ C1] HARDIRQ-ON-W at: [ 43.318854][ C1] __lock_acquire+0x797/0x1570 [ 43.319043][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.319217][ C1] _raw_spin_lock+0x30/0x40 [ 43.319395][ C1] set_mems_allowed+0x1d/0x210 [ 43.319584][ C1] kernel_init_freeable+0x72/0x310 [ 43.319765][ C1] kernel_init+0x20/0x200 [ 43.319959][ C1] ret_from_fork+0x31/0x70 [ 43.320140][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.320318][ C1] SOFTIRQ-ON-W at: [ 43.320422][ C1] __lock_acquire+0x797/0x1570 [ 43.320595][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.320778][ C1] _raw_spin_lock+0x30/0x40 [ 43.320960][ C1] set_mems_allowed+0x1d/0x210 [ 43.321133][ C1] kernel_init_freeable+0x72/0x310 [ 43.321309][ C1] kernel_init+0x20/0x200 [ 43.321485][ C1] ret_from_fork+0x31/0x70 [ 43.321659][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.321837][ C1] INITIAL USE at: [ 43.321943][ C1] __lock_acquire+0x797/0x1570 [ 43.322123][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.322299][ C1] _raw_spin_lock+0x30/0x40 [ 43.322473][ C1] set_mems_allowed+0x1d/0x210 [ 43.322651][ C1] kernel_init_freeable+0x72/0x310 [ 43.322832][ C1] kernel_init+0x20/0x200 [ 43.323009][ C1] ret_from_fork+0x31/0x70 [ 43.323189][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.323363][ C1] } [ 43.323435][ C1] ... key at: [] __key.387+0x0/0x40 [ 43.323650][ C1] ... acquired at: [ 43.323758][ C1] __lock_acquire+0xaf0/0x1570 [ 43.323910][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.324049][ C1] _raw_spin_lock+0x30/0x40 [ 43.324186][ C1] __get_task_comm+0x27/0x70 [ 43.324334][ C1] ref_tracker_alloc+0x2ee/0x490 [ 43.324477][ C1] linkwatch_fire_event+0x196/0x200 [ 43.324625][ C1] veth_newlink+0x367/0x830 [veth] [ 43.324775][ C1] rtnl_newlink_create+0x341/0x850 [ 43.324912][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.325060][ C1] rtnl_newlink+0x63/0xa0 [ 43.325199][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.325338][ C1] netlink_rcv_skb+0x130/0x360 [ 43.325479][ C1] netlink_unicast+0x449/0x710 [ 43.325623][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.325769][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.325911][ C1] ___sys_sendmsg+0xee/0x170 [ 43.326051][ C1] __sys_sendmsg+0xcd/0x170 [ 43.326192][ C1] do_syscall_64+0xc6/0x1e0 [ 43.326343][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.326528][ C1] [ 43.326604][ C1] -> (lweventlist_lock){....}-{2:2} { [ 43.326748][ C1] INITIAL USE at: [ 43.326856][ C1] __lock_acquire+0x797/0x1570 [ 43.327031][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.327208][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.327390][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 43.327567][ C1] rtnl_getlink+0x4c9/0x970 [ 43.327745][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.327922][ C1] netlink_rcv_skb+0x130/0x360 [ 43.328099][ C1] netlink_unicast+0x449/0x710 [ 43.328271][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.328458][ C1] __sys_sendto+0x37d/0x410 [ 43.328633][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.328814][ C1] do_syscall_64+0xc6/0x1e0 [ 43.328988][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.329201][ C1] } [ 43.329274][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.329486][ C1] ... acquired at: [ 43.329593][ C1] __lock_acquire+0xaf0/0x1570 [ 43.329736][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.329876][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.330033][ C1] linkwatch_fire_event+0x74/0x200 [ 43.330170][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.330382][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.330593][ C1] dev_set_mac_address+0x28a/0x410 [ 43.330741][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.330878][ C1] do_setlink+0x17b4/0x21e0 [ 43.331017][ C1] rtnl_setlink+0x1f7/0x310 [ 43.331157][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.331296][ C1] netlink_rcv_skb+0x130/0x360 [ 43.331437][ C1] netlink_unicast+0x449/0x710 [ 43.331575][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.331712][ C1] __sys_sendto+0x37d/0x410 [ 43.331863][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.332002][ C1] do_syscall_64+0xc6/0x1e0 [ 43.332146][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.332322][ C1] [ 43.332395][ C1] -> (&br->lock){+.-.}-{2:2} { [ 43.332541][ C1] HARDIRQ-ON-W at: [ 43.332646][ C1] __lock_acquire+0x797/0x1570 [ 43.332827][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.333008][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.333188][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 43.333432][ C1] br_dev_open+0xa2/0x120 [bridge] [ 43.333640][ C1] __dev_open+0x221/0x430 [ 43.333815][ C1] __dev_change_flags+0x469/0x6c0 [ 43.333991][ C1] rtnl_configure_link+0x118/0x200 [ 43.334169][ C1] rtnl_newlink_create+0x36e/0x850 [ 43.334348][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.334528][ C1] rtnl_newlink+0x63/0xa0 [ 43.334703][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.334890][ C1] netlink_rcv_skb+0x130/0x360 [ 43.335063][ C1] netlink_unicast+0x449/0x710 [ 43.335240][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.335419][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.335599][ C1] ___sys_sendmsg+0xee/0x170 [ 43.335774][ C1] __sys_sendmsg+0xcd/0x170 [ 43.335949][ C1] do_syscall_64+0xc6/0x1e0 [ 43.336155][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.336374][ C1] IN-SOFTIRQ-W at: [ 43.336481][ C1] __lock_acquire+0x797/0x1570 [ 43.336662][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.336840][ C1] _raw_spin_lock+0x30/0x40 [ 43.337012][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.337255][ C1] call_timer_fn+0x13b/0x230 [ 43.337433][ C1] __run_timers+0x545/0x810 [ 43.337607][ C1] timer_expire_remote+0x9b/0xe0 [ 43.337787][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.337966][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.338137][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.338309][ C1] __do_softirq+0x1f8/0x5df [ 43.338484][ C1] irq_exit_rcu+0x97/0xc0 [ 43.338661][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.338874][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.339082][ C1] default_idle+0xf/0x20 [ 43.339260][ C1] default_idle_call+0x6d/0xb0 [ 43.339432][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.339606][ C1] do_idle+0xf9/0x160 [ 43.339746][ C1] cpu_startup_entry+0x54/0x60 [ 43.339938][ C1] start_secondary+0x21c/0x2b0 [ 43.340119][ C1] common_startup_64+0x12c/0x138 [ 43.340295][ C1] INITIAL USE at: [ 43.340401][ C1] __lock_acquire+0x797/0x1570 [ 43.340573][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.340745][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.340923][ C1] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 43.341172][ C1] br_dev_open+0xa2/0x120 [bridge] [ 43.341378][ C1] __dev_open+0x221/0x430 [ 43.341552][ C1] __dev_change_flags+0x469/0x6c0 [ 43.341737][ C1] rtnl_configure_link+0x118/0x200 [ 43.341912][ C1] rtnl_newlink_create+0x36e/0x850 [ 43.342093][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.342279][ C1] rtnl_newlink+0x63/0xa0 [ 43.342454][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.342631][ C1] netlink_rcv_skb+0x130/0x360 [ 43.342808][ C1] netlink_unicast+0x449/0x710 [ 43.342982][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.343156][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.343338][ C1] ___sys_sendmsg+0xee/0x170 [ 43.343516][ C1] __sys_sendmsg+0xcd/0x170 [ 43.343694][ C1] do_syscall_64+0xc6/0x1e0 [ 43.343869][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.344168][ C1] } [ 43.344239][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.344515][ C1] ... acquired at: [ 43.344618][ C1] mark_lock+0x28d/0x3e0 [ 43.344844][ C1] mark_usage+0xd9/0x2a0 [ 43.344984][ C1] __lock_acquire+0x797/0x1570 [ 43.345124][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.345268][ C1] _raw_spin_lock+0x30/0x40 [ 43.345406][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.345705][ C1] call_timer_fn+0x13b/0x230 [ 43.345841][ C1] __run_timers+0x545/0x810 [ 43.345986][ C1] timer_expire_remote+0x9b/0xe0 [ 43.346129][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.346437][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.346580][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.346729][ C1] __do_softirq+0x1f8/0x5df [ 43.346872][ C1] irq_exit_rcu+0x97/0xc0 [ 43.347011][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.347186][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.347368][ C1] default_idle+0xf/0x20 [ 43.347507][ C1] default_idle_call+0x6d/0xb0 [ 43.347737][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.347876][ C1] do_idle+0xf9/0x160 [ 43.347979][ C1] cpu_startup_entry+0x54/0x60 [ 43.348127][ C1] start_secondary+0x21c/0x2b0 [ 43.348346][ C1] common_startup_64+0x12c/0x138 [ 43.348484][ C1] [ 43.348555][ C1] [ 43.348555][ C1] stack backtrace: [ 43.348743][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 43.348957][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.349268][ C1] Call Trace: [ 43.349379][ C1] [ 43.349459][ C1] dump_stack_lvl+0x82/0xd0 [ 43.349692][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.349863][ C1] ? common_startup_64+0x12c/0x138 [ 43.350036][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.350205][ C1] ? __pfx_usage_skip+0x10/0x10 [ 43.350427][ C1] ? __pfx_usage_match+0x10/0x10 [ 43.350565][ C1] ? arch_stack_walk+0x8c/0xf0 [ 43.350710][ C1] mark_lock_irq+0x4cd/0xa10 [ 43.350846][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.350991][ C1] ? stack_trace_save+0x94/0xd0 [ 43.351129][ C1] ? add_chain_cache+0x248/0x8b0 [ 43.351286][ C1] ? save_trace+0x8f/0x5b0 [ 43.351423][ C1] mark_lock+0x28d/0x3e0 [ 43.351609][ C1] mark_usage+0xd9/0x2a0 [ 43.351714][ C1] __lock_acquire+0x797/0x1570 [ 43.351856][ C1] ? __lock_acquire+0xaf0/0x1570 [ 43.352004][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.352331][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.352474][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.352693][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.352840][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 43.352978][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.353191][ C1] ? lock_acquire+0x32/0xc0 [ 43.353337][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.353550][ C1] _raw_spin_lock+0x30/0x40 [ 43.353773][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.353988][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.354204][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.354526][ C1] call_timer_fn+0x13b/0x230 [ 43.354665][ C1] ? call_timer_fn+0xe8/0x230 [ 43.354801][ C1] ? call_timer_fn+0xe8/0x230 [ 43.354946][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 43.355087][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.355318][ C1] __run_timers+0x545/0x810 [ 43.355460][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.355705][ C1] ? __pfx___run_timers+0x10/0x10 [ 43.355929][ C1] ? __lock_release+0x103/0x460 [ 43.356072][ C1] ? do_raw_spin_lock+0x131/0x270 [ 43.356218][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.356362][ C1] ? lock_acquire+0x32/0xc0 [ 43.356500][ C1] ? timer_expire_remote+0x93/0xe0 [ 43.356731][ C1] timer_expire_remote+0x9b/0xe0 [ 43.356871][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.357009][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.357181][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.357486][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.357622][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.357762][ C1] __do_softirq+0x1f8/0x5df [ 43.357900][ C1] irq_exit_rcu+0x97/0xc0 [ 43.358009][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.358146][ C1] [ 43.358218][ C1] [ 43.358287][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.358460][ C1] RIP: 0010:default_idle+0xf/0x20 [ 43.358688][ 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 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 [ 43.359183][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000246 [ 43.359441][ C1] RAX: 0000000000088c09 RBX: 1ffff92000029fc1 RCX: ffffffff8d70e9d5 [ 43.359646][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8b0aa4a4 [ 43.359852][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 43.360080][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 43.360292][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 43.360500][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.360719][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 43.360859][ C1] default_idle_call+0x6d/0xb0 [ 43.360997][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.361135][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.361353][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.361504][ C1] do_idle+0xf9/0x160 [ 43.361611][ C1] cpu_startup_entry+0x54/0x60 [ 43.361750][ C1] start_secondary+0x21c/0x2b0 [ 43.361979][ C1] ? __pfx_start_secondary+0x10/0x10 [ 43.362118][ C1] common_startup_64+0x12c/0x138 [ 43.362257][ C1] [ 55.199105][ T471] br1: port 2(veth2) entered disabled state [ 55.287661][ T473] veth2: left allmulticast mode [ 55.287866][ T473] veth2: left promiscuous mode [ 55.288138][ T473] br1: port 2(veth2) entered disabled state [ 55.391508][ T474] br1: port 1(veth1) entered disabled state [ 55.498919][ T475] veth1: left allmulticast mode [ 55.499111][ T475] veth1: left promiscuous mode [ 55.499413][ T475] br1: port 1(veth1) entered disabled state