[ 27.895033][ T284] br0: port 1(veth1) entered blocking state [ 27.895428][ T284] br0: port 1(veth1) entered disabled state [ 27.895753][ T284] veth1: entered allmulticast mode [ 27.897787][ T284] veth1: entered promiscuous mode [ 28.053643][ T286] br0: port 2(veth2) entered blocking state [ 28.053986][ T286] br0: port 2(veth2) entered disabled state [ 28.054245][ T286] veth2: entered allmulticast mode [ 28.056081][ T286] veth2: entered promiscuous mode [ 28.317129][ T7] br0: port 1(veth1) entered blocking state [ 28.317651][ T7] br0: port 1(veth1) entered forwarding state [ 28.434043][ T63] br0: port 2(veth2) entered blocking state [ 28.434320][ T63] br0: port 2(veth2) entered forwarding state [ 42.943652][ T336] GACT probability NOT on [ 43.331154][ C1] [ 43.331348][ C1] ======================================================== [ 43.331582][ C1] WARNING: possible irq lock inversion dependency detected [ 43.331810][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 43.331984][ C1] -------------------------------------------------------- [ 43.332225][ C1] swapper/1/0 just changed the state of lock: [ 43.332414][ C1] ffff888007502c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.332808][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 43.333040][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 43.333044][ C1] [ 43.333044][ C1] [ 43.333044][ C1] and interrupts could create inverse lock ordering between them. [ 43.333044][ C1] [ 43.333590][ C1] [ 43.333590][ C1] other info that might help us debug this: [ 43.333817][ C1] Chain exists of: [ 43.333817][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 43.333817][ C1] [ 43.334160][ C1] Possible interrupt unsafe locking scenario: [ 43.334160][ C1] [ 43.334381][ C1] CPU0 CPU1 [ 43.334530][ C1] ---- ---- [ 43.334675][ C1] lock(&p->alloc_lock); [ 43.334787][ C1] local_irq_disable(); [ 43.334973][ C1] lock(&br->lock); [ 43.335166][ C1] lock(lweventlist_lock); [ 43.335350][ C1] [ 43.335463][ C1] lock(&br->lock); [ 43.335590][ C1] [ 43.335590][ C1] *** DEADLOCK *** [ 43.335590][ C1] [ 43.335804][ C1] 1 lock held by swapper/1/0: [ 43.335953][ C1] #0: ffffc900001d8b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 43.336266][ C1] [ 43.336266][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 43.336529][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 43.336682][ C1] HARDIRQ-ON-W at: [ 43.336800][ C1] __lock_acquire+0x797/0x1570 [ 43.336995][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.337183][ C1] _raw_spin_lock+0x30/0x40 [ 43.337377][ C1] set_mems_allowed+0x1d/0x210 [ 43.337570][ C1] kernel_init_freeable+0x72/0x310 [ 43.337762][ C1] kernel_init+0x20/0x200 [ 43.337949][ C1] ret_from_fork+0x31/0x70 [ 43.338141][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.338327][ C1] SOFTIRQ-ON-W at: [ 43.338438][ C1] __lock_acquire+0x797/0x1570 [ 43.338638][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.338813][ C1] _raw_spin_lock+0x30/0x40 [ 43.338986][ C1] set_mems_allowed+0x1d/0x210 [ 43.339157][ C1] kernel_init_freeable+0x72/0x310 [ 43.339330][ C1] kernel_init+0x20/0x200 [ 43.339506][ C1] ret_from_fork+0x31/0x70 [ 43.339684][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.339853][ C1] INITIAL USE at: [ 43.339958][ C1] __lock_acquire+0x797/0x1570 [ 43.340129][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.340305][ C1] _raw_spin_lock+0x30/0x40 [ 43.340475][ C1] set_mems_allowed+0x1d/0x210 [ 43.340658][ C1] kernel_init_freeable+0x72/0x310 [ 43.340830][ C1] kernel_init+0x20/0x200 [ 43.341000][ C1] ret_from_fork+0x31/0x70 [ 43.341176][ C1] ret_from_fork_asm+0x1a/0x30 [ 43.341346][ C1] } [ 43.341427][ C1] ... key at: [] __key.387+0x0/0x40 [ 43.341639][ C1] ... acquired at: [ 43.341754][ C1] __lock_acquire+0xaf0/0x1570 [ 43.341897][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.342032][ C1] _raw_spin_lock+0x30/0x40 [ 43.342169][ C1] __get_task_comm+0x27/0x70 [ 43.342315][ C1] ref_tracker_alloc+0x2ee/0x490 [ 43.342456][ C1] linkwatch_fire_event+0x196/0x200 [ 43.342598][ C1] veth_newlink+0x367/0x830 [veth] [ 43.342745][ C1] rtnl_newlink_create+0x341/0x850 [ 43.342886][ C1] __rtnl_newlink+0xac9/0xd80 [ 43.343031][ C1] rtnl_newlink+0x63/0xa0 [ 43.343167][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.343305][ C1] netlink_rcv_skb+0x130/0x360 [ 43.343449][ C1] netlink_unicast+0x449/0x710 [ 43.343590][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.343734][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 43.343874][ C1] ___sys_sendmsg+0xee/0x170 [ 43.344017][ C1] __sys_sendmsg+0xcd/0x170 [ 43.344158][ C1] do_syscall_64+0xc6/0x1e0 [ 43.344296][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.344468][ C1] [ 43.344538][ C1] -> (lweventlist_lock){....}-{2:2} { [ 43.344678][ C1] INITIAL USE at: [ 43.344784][ C1] __lock_acquire+0x797/0x1570 [ 43.344957][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.345134][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.345312][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 43.345484][ C1] rtnl_getlink+0x4c9/0x970 [ 43.345656][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.345827][ C1] netlink_rcv_skb+0x130/0x360 [ 43.345999][ C1] netlink_unicast+0x449/0x710 [ 43.346176][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.346346][ C1] __sys_sendto+0x37d/0x410 [ 43.346519][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.346691][ C1] do_syscall_64+0xc6/0x1e0 [ 43.346863][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.347069][ C1] } [ 43.347138][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 43.347345][ C1] ... acquired at: [ 43.347445][ C1] __lock_acquire+0xaf0/0x1570 [ 43.347583][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.347724][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 43.347861][ C1] linkwatch_fire_event+0x74/0x200 [ 43.347999][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 43.348210][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 43.348419][ C1] dev_set_mac_address+0x28a/0x410 [ 43.348568][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.348705][ C1] do_setlink+0x17b4/0x21e0 [ 43.348842][ C1] rtnl_setlink+0x1f7/0x310 [ 43.348980][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.349116][ C1] netlink_rcv_skb+0x130/0x360 [ 43.349257][ C1] netlink_unicast+0x449/0x710 [ 43.349394][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.349545][ C1] __sys_sendto+0x37d/0x410 [ 43.349682][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.349824][ C1] do_syscall_64+0xc6/0x1e0 [ 43.349965][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.350137][ C1] [ 43.350205][ C1] -> (&br->lock){+.-.}-{2:2} { [ 43.350345][ C1] HARDIRQ-ON-W at: [ 43.350449][ C1] __lock_acquire+0x797/0x1570 [ 43.350623][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.350803][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.350973][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 43.351211][ C1] dev_set_mac_address+0x28a/0x410 [ 43.351384][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.351553][ C1] do_setlink+0x17b4/0x21e0 [ 43.351733][ C1] rtnl_setlink+0x1f7/0x310 [ 43.351913][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.352083][ C1] netlink_rcv_skb+0x130/0x360 [ 43.352262][ C1] netlink_unicast+0x449/0x710 [ 43.352433][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.352611][ C1] __sys_sendto+0x37d/0x410 [ 43.352783][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.352957][ C1] do_syscall_64+0xc6/0x1e0 [ 43.353216][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.353423][ C1] IN-SOFTIRQ-W at: [ 43.353525][ C1] __lock_acquire+0x797/0x1570 [ 43.353695][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.353948][ C1] _raw_spin_lock+0x30/0x40 [ 43.354120][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.354370][ C1] call_timer_fn+0x13b/0x230 [ 43.354628][ C1] __run_timers+0x545/0x810 [ 43.354799][ C1] timer_expire_remote+0x9b/0xe0 [ 43.354970][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.355142][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.355396][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.355577][ C1] __do_softirq+0x1f8/0x5df [ 43.355746][ C1] irq_exit_rcu+0x97/0xc0 [ 43.356000][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.356208][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.356412][ C1] default_idle+0xf/0x20 [ 43.356665][ C1] default_idle_call+0x6d/0xb0 [ 43.356840][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.357011][ C1] do_idle+0xf9/0x160 [ 43.357152][ C1] cpu_startup_entry+0x54/0x60 [ 43.357411][ C1] start_secondary+0x21c/0x2b0 [ 43.357585][ C1] common_startup_64+0x12c/0x138 [ 43.357756][ C1] INITIAL USE at: [ 43.357940][ C1] __lock_acquire+0x797/0x1570 [ 43.358124][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.358294][ C1] _raw_spin_lock_bh+0x38/0x50 [ 43.358466][ C1] br_set_mac_address+0xd2/0x260 [bridge] [ 43.358796][ C1] dev_set_mac_address+0x28a/0x410 [ 43.358969][ C1] dev_set_mac_address_user+0x31/0x50 [ 43.359140][ C1] do_setlink+0x17b4/0x21e0 [ 43.359394][ C1] rtnl_setlink+0x1f7/0x310 [ 43.359566][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 43.359736][ C1] netlink_rcv_skb+0x130/0x360 [ 43.359989][ C1] netlink_unicast+0x449/0x710 [ 43.360162][ C1] netlink_sendmsg+0x723/0xbe0 [ 43.360335][ C1] __sys_sendto+0x37d/0x410 [ 43.360517][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 43.360864][ C1] do_syscall_64+0xc6/0x1e0 [ 43.361037][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 43.361243][ C1] } [ 43.361314][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 43.361675][ C1] ... acquired at: [ 43.361777][ C1] mark_lock+0x28d/0x3e0 [ 43.361914][ C1] mark_usage+0xd9/0x2a0 [ 43.362139][ C1] __lock_acquire+0x797/0x1570 [ 43.362278][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.362419][ C1] _raw_spin_lock+0x30/0x40 [ 43.362555][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.362846][ C1] call_timer_fn+0x13b/0x230 [ 43.362986][ C1] __run_timers+0x545/0x810 [ 43.363124][ C1] timer_expire_remote+0x9b/0xe0 [ 43.363269][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.363409][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.363625][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.363761][ C1] __do_softirq+0x1f8/0x5df [ 43.363896][ C1] irq_exit_rcu+0x97/0xc0 [ 43.364039][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.364287][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.364459][ C1] default_idle+0xf/0x20 [ 43.364601][ C1] default_idle_call+0x6d/0xb0 [ 43.364744][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.364963][ C1] do_idle+0xf9/0x160 [ 43.365067][ C1] cpu_startup_entry+0x54/0x60 [ 43.365204][ C1] start_secondary+0x21c/0x2b0 [ 43.365348][ C1] common_startup_64+0x12c/0x138 [ 43.365564][ C1] [ 43.365634][ C1] [ 43.365634][ C1] stack backtrace: [ 43.365806][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 43.366017][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 43.366401][ C1] Call Trace: [ 43.366507][ C1] [ 43.366580][ C1] dump_stack_lvl+0x82/0xd0 [ 43.366721][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 43.366973][ C1] ? common_startup_64+0x12c/0x138 [ 43.367112][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 43.367288][ C1] ? __pfx_usage_skip+0x10/0x10 [ 43.367425][ C1] ? __pfx_usage_match+0x10/0x10 [ 43.367643][ C1] ? arch_stack_walk+0x8c/0xf0 [ 43.367781][ C1] mark_lock_irq+0x4cd/0xa10 [ 43.367918][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 43.368053][ C1] ? stack_trace_save+0x94/0xd0 [ 43.368271][ C1] ? add_chain_cache+0x248/0x8b0 [ 43.368414][ C1] ? save_trace+0x8f/0x5b0 [ 43.368571][ C1] mark_lock+0x28d/0x3e0 [ 43.368677][ C1] mark_usage+0xd9/0x2a0 [ 43.368781][ C1] __lock_acquire+0x797/0x1570 [ 43.368999][ C1] ? __lock_acquire+0xaf0/0x1570 [ 43.369137][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.369380][ C1] lock_acquire.part.0+0xeb/0x330 [ 43.369595][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.369803][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 43.369951][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 43.370087][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.370374][ C1] ? lock_acquire+0x32/0xc0 [ 43.370509][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.370719][ C1] _raw_spin_lock+0x30/0x40 [ 43.370854][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.371143][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 43.371356][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.371595][ C1] call_timer_fn+0x13b/0x230 [ 43.371812][ C1] ? call_timer_fn+0xe8/0x230 [ 43.371947][ C1] ? call_timer_fn+0xe8/0x230 [ 43.372082][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 43.372218][ C1] ? mark_lock+0x38/0x3e0 [ 43.372328][ C1] __run_timers+0x545/0x810 [ 43.372546][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 43.372794][ C1] ? __pfx___run_timers+0x10/0x10 [ 43.372929][ C1] ? __lock_release+0x103/0x460 [ 43.373067][ C1] ? do_raw_spin_lock+0x131/0x270 [ 43.373286][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 43.373422][ C1] ? lock_acquire+0x32/0xc0 [ 43.373557][ C1] ? timer_expire_remote+0x93/0xe0 [ 43.373694][ C1] timer_expire_remote+0x9b/0xe0 [ 43.373911][ C1] tmigr_handle_remote_cpu+0x270/0x430 [ 43.374054][ C1] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 43.374225][ C1] tmigr_handle_remote_up+0x19f/0x2e0 [ 43.374365][ C1] tmigr_handle_remote+0x21d/0x3a0 [ 43.374583][ C1] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 43.374722][ C1] __do_softirq+0x1f8/0x5df [ 43.374867][ C1] irq_exit_rcu+0x97/0xc0 [ 43.374971][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 43.375191][ C1] [ 43.375270][ C1] [ 43.375340][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 43.375511][ C1] RIP: 0010:default_idle+0xf/0x20 [ 43.375655][ 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 [ 43.376234][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 43.376411][ C1] RAX: 0000000000081067 RBX: 1ffff92000029fc1 RCX: ffffffffb790e9d5 [ 43.376703][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffb52aa4a4 [ 43.376906][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c1709c [ 43.377110][ C1] R10: ffff8880360b84e3 R11: ffff8880360ad9b0 R12: 0000000000000000 [ 43.377396][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 43.377609][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 43.377746][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 43.377962][ C1] default_idle_call+0x6d/0xb0 [ 43.378095][ C1] cpuidle_idle_call+0x1f4/0x280 [ 43.378230][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 43.378367][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 43.378598][ C1] do_idle+0xf9/0x160 [ 43.378712][ C1] cpu_startup_entry+0x54/0x60 [ 43.378848][ C1] start_secondary+0x21c/0x2b0 [ 43.378991][ C1] ? __pfx_start_secondary+0x10/0x10 [ 43.379129][ C1] common_startup_64+0x12c/0x138 [ 43.379355][ C1] [ 207.685159][ T1475] br0: port 2(veth2) entered disabled state [ 207.794919][ T1476] br0: port 1(veth1) entered disabled state [ 207.887058][ T1477] veth2: left allmulticast mode [ 207.887247][ T1477] veth2: left promiscuous mode [ 207.887505][ T1477] br0: port 2(veth2) entered disabled state [ 207.890198][ T1477] veth1: left allmulticast mode [ 207.890435][ T1477] veth1: left promiscuous mode [ 207.890824][ T1477] br0: port 1(veth1) entered disabled state