[ 25.773616][ T260] ip (260) used greatest stack depth: 23408 bytes left [ 31.492763][ T317] br: port 1(veth1) entered blocking state [ 31.493554][ T317] br: port 1(veth1) entered disabled state [ 31.499354][ T317] veth1: entered allmulticast mode [ 31.502171][ T317] veth1: entered promiscuous mode [ 31.504554][ T49] br: port 1(veth1) entered blocking state [ 31.504860][ T49] br: port 1(veth1) entered forwarding state [ 31.611149][ T319] br: port 2(veth3) entered blocking state [ 31.611412][ T319] br: port 2(veth3) entered disabled state [ 31.611647][ T319] veth3: entered allmulticast mode [ 31.613495][ T319] veth3: entered promiscuous mode [ 31.615249][ T62] br: port 2(veth3) entered blocking state [ 31.615477][ T62] br: port 2(veth3) entered forwarding state [ 31.732123][ T320] br: port 3(veth4) entered blocking state [ 31.732394][ T320] br: port 3(veth4) entered disabled state [ 31.732637][ T320] veth4: entered allmulticast mode [ 31.734474][ T320] veth4: entered promiscuous mode [ 31.735754][ T49] br: port 3(veth4) entered blocking state [ 31.735980][ T49] br: port 3(veth4) entered forwarding state [ 46.908346][ C2] [ 46.908491][ C2] ======================================================== [ 46.908696][ C2] WARNING: possible irq lock inversion dependency detected [ 46.908898][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 46.909066][ C2] -------------------------------------------------------- [ 46.909280][ C2] swapper/2/0 just changed the state of lock: [ 46.909452][ C2] ffff88800661ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.909835][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 46.910046][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 46.910051][ C2] [ 46.910051][ C2] [ 46.910051][ C2] and interrupts could create inverse lock ordering between them. [ 46.910051][ C2] [ 46.910570][ C2] [ 46.910570][ C2] other info that might help us debug this: [ 46.910774][ C2] Chain exists of: [ 46.910774][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 46.910774][ C2] [ 46.911078][ C2] Possible interrupt unsafe locking scenario: [ 46.911078][ C2] [ 46.911275][ C2] CPU0 CPU1 [ 46.911411][ C2] ---- ---- [ 46.911546][ C2] lock(&p->alloc_lock); [ 46.911650][ C2] local_irq_disable(); [ 46.911825][ C2] lock(&br->lock); [ 46.911993][ C2] lock(lweventlist_lock); [ 46.912158][ C2] [ 46.912261][ C2] lock(&br->lock); [ 46.912367][ C2] [ 46.912367][ C2] *** DEADLOCK *** [ 46.912367][ C2] [ 46.912572][ C2] 1 lock held by swapper/2/0: [ 46.912711][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 46.913003][ C2] [ 46.913003][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 46.913236][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.913384][ C2] HARDIRQ-ON-W at: [ 46.913492][ C2] __lock_acquire+0x797/0x1570 [ 46.913676][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.913861][ C2] _raw_spin_lock+0x30/0x40 [ 46.914042][ C2] set_mems_allowed+0x1d/0x210 [ 46.914235][ C2] kernel_init_freeable+0x72/0x310 [ 46.914410][ C2] kernel_init+0x20/0x200 [ 46.914583][ C2] ret_from_fork+0x31/0x70 [ 46.914760][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.914932][ C2] SOFTIRQ-ON-W at: [ 46.915038][ C2] __lock_acquire+0x797/0x1570 [ 46.915206][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.915381][ C2] _raw_spin_lock+0x30/0x40 [ 46.915549][ C2] set_mems_allowed+0x1d/0x210 [ 46.915714][ C2] kernel_init_freeable+0x72/0x310 [ 46.915885][ C2] kernel_init+0x20/0x200 [ 46.916053][ C2] ret_from_fork+0x31/0x70 [ 46.916221][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.916391][ C2] INITIAL USE at: [ 46.916493][ C2] __lock_acquire+0x797/0x1570 [ 46.916659][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.916832][ C2] _raw_spin_lock+0x30/0x40 [ 46.917001][ C2] set_mems_allowed+0x1d/0x210 [ 46.917169][ C2] kernel_init_freeable+0x72/0x310 [ 46.917337][ C2] kernel_init+0x20/0x200 [ 46.917511][ C2] ret_from_fork+0x31/0x70 [ 46.917679][ C2] ret_from_fork_asm+0x1a/0x30 [ 46.917847][ C2] } [ 46.917917][ C2] ... key at: [] __key.387+0x0/0x40 [ 46.918117][ C2] ... acquired at: [ 46.918220][ C2] __lock_acquire+0xaf0/0x1570 [ 46.918360][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.918492][ C2] _raw_spin_lock+0x30/0x40 [ 46.918625][ C2] __get_task_comm+0x27/0x70 [ 46.918762][ C2] ref_tracker_alloc+0x2ee/0x490 [ 46.918896][ C2] linkwatch_fire_event+0x196/0x200 [ 46.919030][ C2] veth_newlink+0x367/0x830 [veth] [ 46.919172][ C2] rtnl_newlink_create+0x341/0x850 [ 46.919306][ C2] __rtnl_newlink+0xac9/0xd80 [ 46.919441][ C2] rtnl_newlink+0x63/0xa0 [ 46.919574][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.919706][ C2] netlink_rcv_skb+0x130/0x360 [ 46.919840][ C2] netlink_unicast+0x449/0x710 [ 46.919974][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.920112][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 46.920246][ C2] ___sys_sendmsg+0xee/0x170 [ 46.920379][ C2] __sys_sendmsg+0xcd/0x170 [ 46.920526][ C2] do_syscall_64+0xc6/0x1e0 [ 46.920671][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.920842][ C2] [ 46.920915][ C2] -> (lweventlist_lock){....}-{2:2} { [ 46.921053][ C2] INITIAL USE at: [ 46.921155][ C2] __lock_acquire+0x797/0x1570 [ 46.921322][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.921493][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.921666][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 46.921835][ C2] rtnl_getlink+0x4c9/0x970 [ 46.922012][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.922178][ C2] netlink_rcv_skb+0x130/0x360 [ 46.922344][ C2] netlink_unicast+0x449/0x710 [ 46.922514][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.922684][ C2] __sys_sendto+0x37d/0x410 [ 46.922853][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.923022][ C2] do_syscall_64+0xc6/0x1e0 [ 46.923195][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.923398][ C2] } [ 46.923464][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 46.923667][ C2] ... acquired at: [ 46.923769][ C2] __lock_acquire+0xaf0/0x1570 [ 46.923905][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.924039][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 46.924174][ C2] linkwatch_fire_event+0x74/0x200 [ 46.924305][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 46.924511][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 46.924709][ C2] dev_set_mac_address+0x28a/0x410 [ 46.924855][ C2] dev_set_mac_address_user+0x31/0x50 [ 46.924993][ C2] do_setlink+0x17b4/0x21e0 [ 46.925126][ C2] rtnl_setlink+0x1f7/0x310 [ 46.925258][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.925388][ C2] netlink_rcv_skb+0x130/0x360 [ 46.925524][ C2] netlink_unicast+0x449/0x710 [ 46.925661][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.925797][ C2] __sys_sendto+0x37d/0x410 [ 46.925938][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 46.926079][ C2] do_syscall_64+0xc6/0x1e0 [ 46.926217][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.926397][ C2] [ 46.926463][ C2] -> (&br->lock){+.-.}-{2:2} { [ 46.926601][ C2] HARDIRQ-ON-W at: [ 46.926701][ C2] __lock_acquire+0x797/0x1570 [ 46.926878][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.927047][ C2] _raw_spin_lock_bh+0x38/0x50 [ 46.927232][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 46.927471][ C2] br_dev_open+0xa2/0x120 [bridge] [ 46.927671][ C2] __dev_open+0x221/0x430 [ 46.927850][ C2] __dev_change_flags+0x469/0x6c0 [ 46.928015][ C2] rtnl_configure_link+0x118/0x200 [ 46.928191][ C2] rtnl_newlink_create+0x36e/0x850 [ 46.928368][ C2] __rtnl_newlink+0xac9/0xd80 [ 46.928533][ C2] rtnl_newlink+0x63/0xa0 [ 46.928701][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.928873][ C2] netlink_rcv_skb+0x130/0x360 [ 46.929042][ C2] netlink_unicast+0x449/0x710 [ 46.929211][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.929385][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 46.929558][ C2] ___sys_sendmsg+0xee/0x170 [ 46.929732][ C2] __sys_sendmsg+0xcd/0x170 [ 46.929908][ C2] do_syscall_64+0xc6/0x1e0 [ 46.930082][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.930282][ C2] IN-SOFTIRQ-W at: [ 46.930383][ C2] __lock_acquire+0x797/0x1570 [ 46.930643][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.930812][ C2] _raw_spin_lock+0x30/0x40 [ 46.930980][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.931301][ C2] call_timer_fn+0x13b/0x230 [ 46.931471][ C2] __run_timers+0x545/0x810 [ 46.931635][ C2] run_timer_softirq+0xe8/0x1b0 [ 46.931808][ C2] __do_softirq+0x1f8/0x5df [ 46.932051][ C2] irq_exit_rcu+0x97/0xc0 [ 46.932223][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.932421][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.932784][ C2] default_idle+0xf/0x20 [ 46.932952][ C2] default_idle_call+0x6d/0xb0 [ 46.933117][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.933363][ C2] do_idle+0xf9/0x160 [ 46.933495][ C2] cpu_startup_entry+0x54/0x60 [ 46.933659][ C2] start_secondary+0x21c/0x2b0 [ 46.933827][ C2] common_startup_64+0x12c/0x138 [ 46.934071][ C2] INITIAL USE at: [ 46.934172][ C2] __lock_acquire+0x797/0x1570 [ 46.934340][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.934505][ C2] _raw_spin_lock_bh+0x38/0x50 [ 46.934747][ C2] br_stp_enable_bridge+0x1f/0x2f0 [bridge] [ 46.934983][ C2] br_dev_open+0xa2/0x120 [bridge] [ 46.935181][ C2] __dev_open+0x221/0x430 [ 46.935422][ C2] __dev_change_flags+0x469/0x6c0 [ 46.935587][ C2] rtnl_configure_link+0x118/0x200 [ 46.935756][ C2] rtnl_newlink_create+0x36e/0x850 [ 46.935996][ C2] __rtnl_newlink+0xac9/0xd80 [ 46.936160][ C2] rtnl_newlink+0x63/0xa0 [ 46.936325][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.936488][ C2] netlink_rcv_skb+0x130/0x360 [ 46.936732][ C2] netlink_unicast+0x449/0x710 [ 46.936899][ C2] netlink_sendmsg+0x723/0xbe0 [ 46.937063][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 46.937308][ C2] ___sys_sendmsg+0xee/0x170 [ 46.937473][ C2] __sys_sendmsg+0xcd/0x170 [ 46.937640][ C2] do_syscall_64+0xc6/0x1e0 [ 46.937885][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.938085][ C2] } [ 46.938152][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 46.938421][ C2] ... acquired at: [ 46.938598][ C2] mark_lock+0x28d/0x3e0 [ 46.938735][ C2] mark_usage+0xd9/0x2a0 [ 46.938868][ C2] __lock_acquire+0x797/0x1570 [ 46.939001][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.939208][ C2] _raw_spin_lock+0x30/0x40 [ 46.939352][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.939560][ C2] call_timer_fn+0x13b/0x230 [ 46.939692][ C2] __run_timers+0x545/0x810 [ 46.939901][ C2] run_timer_softirq+0xe8/0x1b0 [ 46.940037][ C2] __do_softirq+0x1f8/0x5df [ 46.940167][ C2] irq_exit_rcu+0x97/0xc0 [ 46.940302][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.940554][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.940723][ C2] default_idle+0xf/0x20 [ 46.940865][ C2] default_idle_call+0x6d/0xb0 [ 46.940996][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.941204][ C2] do_idle+0xf9/0x160 [ 46.941304][ C2] cpu_startup_entry+0x54/0x60 [ 46.941434][ C2] start_secondary+0x21c/0x2b0 [ 46.941565][ C2] common_startup_64+0x12c/0x138 [ 46.941699][ C2] [ 46.941851][ C2] [ 46.941851][ C2] stack backtrace: [ 46.942020][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 46.942220][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.942591][ C2] Call Trace: [ 46.942690][ C2] [ 46.942763][ C2] dump_stack_lvl+0x82/0xd0 [ 46.942904][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 46.943224][ C2] ? common_startup_64+0x12c/0x138 [ 46.943360][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 46.943524][ C2] ? __pfx_usage_skip+0x10/0x10 [ 46.943657][ C2] ? __pfx_usage_match+0x10/0x10 [ 46.943866][ C2] ? arch_stack_walk+0x8c/0xf0 [ 46.944003][ C2] mark_lock_irq+0x4cd/0xa10 [ 46.944136][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 46.944266][ C2] ? stack_trace_save+0x94/0xd0 [ 46.944403][ C2] ? add_chain_cache+0x248/0x8b0 [ 46.944613][ C2] ? save_trace+0x8f/0x5b0 [ 46.944744][ C2] mark_lock+0x28d/0x3e0 [ 46.944845][ C2] mark_usage+0xd9/0x2a0 [ 46.944949][ C2] __lock_acquire+0x797/0x1570 [ 46.945157][ C2] ? __lock_acquire+0xaf0/0x1570 [ 46.945291][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.945532][ C2] lock_acquire.part.0+0xeb/0x330 [ 46.945664][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.945954][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.946085][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 46.946219][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.946417][ C2] ? lock_acquire+0x32/0xc0 [ 46.946624][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.946833][ C2] _raw_spin_lock+0x30/0x40 [ 46.946963][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.947167][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 46.947444][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.947676][ C2] call_timer_fn+0x13b/0x230 [ 46.947812][ C2] ? call_timer_fn+0xe8/0x230 [ 46.948025][ C2] ? call_timer_fn+0xe8/0x230 [ 46.948155][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 46.948289][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.948424][ C2] __run_timers+0x545/0x810 [ 46.948634][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 46.948881][ C2] ? __pfx___run_timers+0x10/0x10 [ 46.949013][ C2] ? do_raw_spin_lock+0x131/0x270 [ 46.949145][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 46.949359][ C2] ? lock_acquire+0x32/0xc0 [ 46.949489][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 46.949622][ C2] run_timer_softirq+0xe8/0x1b0 [ 46.949754][ C2] __do_softirq+0x1f8/0x5df [ 46.949973][ C2] irq_exit_rcu+0x97/0xc0 [ 46.950072][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.950201][ C2] [ 46.950268][ C2] [ 46.950333][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.950494][ C2] RIP: 0010:default_idle+0xf/0x20 [ 46.950720][ C2] 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 [ 46.951268][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000242 [ 46.951434][ C2] RAX: 00000000001750ef RBX: 1ffff9200002bfc1 RCX: ffffffffafb0e9d5 [ 46.951632][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffad4aa4a4 [ 46.951908][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 46.952112][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 46.952316][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 46.952592][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 46.952723][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 46.952855][ C2] default_idle_call+0x6d/0xb0 [ 46.952986][ C2] cpuidle_idle_call+0x1f4/0x280 [ 46.953193][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 46.953327][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 46.953460][ C2] do_idle+0xf9/0x160 [ 46.953559][ C2] cpu_startup_entry+0x54/0x60 [ 46.953689][ C2] start_secondary+0x21c/0x2b0 [ 46.953973][ C2] ? __pfx_start_secondary+0x10/0x10 [ 46.954105][ C2] common_startup_64+0x12c/0x138 [ 46.954238][ C2] [ 127.132420][ T653] Mirror/redirect action on [ 165.006835][ T795] br: port 3(veth4) entered disabled state [ 165.007294][ T795] veth4: left allmulticast mode [ 165.007442][ T795] veth4: left promiscuous mode [ 165.007689][ T795] br: port 3(veth4) entered disabled state [ 165.114700][ T797] br: port 2(veth3) entered disabled state [ 165.115132][ T797] veth3: left allmulticast mode [ 165.115275][ T797] veth3: left promiscuous mode [ 165.115517][ T797] br: port 2(veth3) entered disabled state [ 165.211092][ T799] br: port 1(veth1) entered disabled state [ 165.211563][ T799] veth1: left allmulticast mode [ 165.211710][ T799] veth1: left promiscuous mode [ 165.211955][ T799] br: port 1(veth1) entered disabled state