[ 27.084903][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 29.805142][ T300] br0: port 1(veth1) entered blocking state [ 29.805575][ T300] br0: port 1(veth1) entered disabled state [ 29.805937][ T300] veth1: entered allmulticast mode [ 29.808398][ T300] veth1: entered promiscuous mode [ 29.934835][ T302] br0: port 2(veth2) entered blocking state [ 29.935139][ T302] br0: port 2(veth2) entered disabled state [ 29.935409][ T302] veth2: entered allmulticast mode [ 29.937315][ T302] veth2: entered promiscuous mode [ 30.196321][ T7] br0: port 1(veth1) entered blocking state [ 30.197034][ T7] br0: port 1(veth1) entered forwarding state [ 30.318914][ T7] br0: port 2(veth2) entered blocking state [ 30.319176][ T7] br0: port 2(veth2) entered forwarding state [ 45.357149][ C3] [ 45.357314][ C3] ======================================================== [ 45.357547][ C3] WARNING: possible irq lock inversion dependency detected [ 45.357778][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.357935][ C3] -------------------------------------------------------- [ 45.358324][ C3] swapper/3/0 just changed the state of lock: [ 45.358504][ C3] ffff8880073fac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.358884][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.359088][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.359092][ C3] [ 45.359092][ C3] [ 45.359092][ C3] and interrupts could create inverse lock ordering between them. [ 45.359092][ C3] [ 45.359603][ C3] [ 45.359603][ C3] other info that might help us debug this: [ 45.359834][ C3] Chain exists of: [ 45.359834][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.359834][ C3] [ 45.360186][ C3] Possible interrupt unsafe locking scenario: [ 45.360186][ C3] [ 45.360415][ C3] CPU0 CPU1 [ 45.360565][ C3] ---- ---- [ 45.360715][ C3] lock(&p->alloc_lock); [ 45.360833][ C3] local_irq_disable(); [ 45.361022][ C3] lock(&br->lock); [ 45.361223][ C3] lock(lweventlist_lock); [ 45.361415][ C3] [ 45.361527][ C3] lock(&br->lock); [ 45.361643][ C3] [ 45.361643][ C3] *** DEADLOCK *** [ 45.361643][ C3] [ 45.361863][ C3] 1 lock held by swapper/3/0: [ 45.362015][ C3] #0: ffffc90000288b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.362336][ C3] [ 45.362336][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.362599][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.362756][ C3] HARDIRQ-ON-W at: [ 45.362872][ C3] __lock_acquire+0x797/0x1570 [ 45.363065][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.363254][ C3] _raw_spin_lock+0x30/0x40 [ 45.363453][ C3] set_mems_allowed+0x1d/0x210 [ 45.363641][ C3] kernel_init_freeable+0x72/0x310 [ 45.363829][ C3] kernel_init+0x20/0x200 [ 45.364018][ C3] ret_from_fork+0x31/0x70 [ 45.364213][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.364403][ C3] SOFTIRQ-ON-W at: [ 45.364537][ C3] __lock_acquire+0x797/0x1570 [ 45.364729][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.364921][ C3] _raw_spin_lock+0x30/0x40 [ 45.365117][ C3] set_mems_allowed+0x1d/0x210 [ 45.365301][ C3] kernel_init_freeable+0x72/0x310 [ 45.365507][ C3] kernel_init+0x20/0x200 [ 45.365699][ C3] ret_from_fork+0x31/0x70 [ 45.365885][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.366080][ C3] INITIAL USE at: [ 45.366194][ C3] __lock_acquire+0x797/0x1570 [ 45.366384][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.366570][ C3] _raw_spin_lock+0x30/0x40 [ 45.366761][ C3] set_mems_allowed+0x1d/0x210 [ 45.366951][ C3] kernel_init_freeable+0x72/0x310 [ 45.367146][ C3] kernel_init+0x20/0x200 [ 45.367332][ C3] ret_from_fork+0x31/0x70 [ 45.367521][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.367707][ C3] } [ 45.367789][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.368019][ C3] ... acquired at: [ 45.368156][ C3] __lock_acquire+0xaf0/0x1570 [ 45.368311][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.368459][ C3] _raw_spin_lock+0x30/0x40 [ 45.368617][ C3] __get_task_comm+0x27/0x70 [ 45.368774][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.368933][ C3] linkwatch_fire_event+0x196/0x200 [ 45.369085][ C3] veth_newlink+0x367/0x830 [veth] [ 45.369257][ C3] rtnl_newlink_create+0x341/0x850 [ 45.369415][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.369572][ C3] rtnl_newlink+0x63/0xa0 [ 45.369728][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.369879][ C3] netlink_rcv_skb+0x130/0x360 [ 45.370040][ C3] netlink_unicast+0x449/0x710 [ 45.370192][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.370341][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.370497][ C3] ___sys_sendmsg+0xee/0x170 [ 45.370653][ C3] __sys_sendmsg+0xcd/0x170 [ 45.370806][ C3] do_syscall_64+0xc6/0x1e0 [ 45.370957][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.371146][ C3] [ 45.371222][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.371378][ C3] INITIAL USE at: [ 45.371502][ C3] __lock_acquire+0x797/0x1570 [ 45.371691][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.371888][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.372077][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.372268][ C3] rtnl_getlink+0x4c9/0x970 [ 45.372459][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.372653][ C3] netlink_rcv_skb+0x130/0x360 [ 45.372843][ C3] netlink_unicast+0x449/0x710 [ 45.373042][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.373231][ C3] __sys_sendto+0x37d/0x410 [ 45.373421][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.373608][ C3] do_syscall_64+0xc6/0x1e0 [ 45.373798][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.374032][ C3] } [ 45.374114][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.374346][ C3] ... acquired at: [ 45.374459][ C3] __lock_acquire+0xaf0/0x1570 [ 45.374616][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.374771][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.374920][ C3] linkwatch_fire_event+0x74/0x200 [ 45.375071][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.375300][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.375522][ C3] dev_set_mac_address+0x28a/0x410 [ 45.375674][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.375833][ C3] do_setlink+0x17b4/0x21e0 [ 45.375985][ C3] rtnl_setlink+0x1f7/0x310 [ 45.376141][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.376290][ C3] netlink_rcv_skb+0x130/0x360 [ 45.376444][ C3] netlink_unicast+0x449/0x710 [ 45.376617][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.376778][ C3] __sys_sendto+0x37d/0x410 [ 45.376930][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.377080][ C3] do_syscall_64+0xc6/0x1e0 [ 45.377232][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.377426][ C3] [ 45.377504][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.377663][ C3] HARDIRQ-ON-W at: [ 45.377787][ C3] __lock_acquire+0x797/0x1570 [ 45.377991][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.378186][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.378360][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.378619][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.378870][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.379085][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.379304][ C3] rtnl_newlink_create+0x341/0x850 [ 45.379479][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.379653][ C3] rtnl_newlink+0x63/0xa0 [ 45.379833][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.380004][ C3] netlink_rcv_skb+0x130/0x360 [ 45.380178][ C3] netlink_unicast+0x449/0x710 [ 45.380355][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.380527][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.380701][ C3] ___sys_sendmsg+0xee/0x170 [ 45.380876][ C3] __sys_sendmsg+0xcd/0x170 [ 45.381051][ C3] do_syscall_64+0xc6/0x1e0 [ 45.381229][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.381435][ C3] IN-SOFTIRQ-W at: [ 45.381543][ C3] __lock_acquire+0x797/0x1570 [ 45.381717][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.381892][ C3] _raw_spin_lock+0x30/0x40 [ 45.382069][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.382316][ C3] call_timer_fn+0x13b/0x230 [ 45.382496][ C3] __run_timers+0x545/0x810 [ 45.382669][ C3] timer_expire_remote+0x9b/0xe0 [ 45.382856][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.383032][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.383292][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.383465][ C3] __do_softirq+0x1f8/0x5df [ 45.383642][ C3] irq_exit_rcu+0x97/0xc0 [ 45.383900][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.384119][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.384330][ C3] default_idle+0xf/0x20 [ 45.384589][ C3] default_idle_call+0x6d/0xb0 [ 45.384762][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.384935][ C3] do_idle+0xf9/0x160 [ 45.385074][ C3] cpu_startup_entry+0x54/0x60 [ 45.385419][ C3] start_secondary+0x21c/0x2b0 [ 45.385594][ C3] common_startup_64+0x12c/0x138 [ 45.385770][ C3] INITIAL USE at: [ 45.385874][ C3] __lock_acquire+0x797/0x1570 [ 45.386129][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.386307][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.386485][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.386821][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.387065][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.387276][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.387566][ C3] rtnl_newlink_create+0x341/0x850 [ 45.387738][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.387915][ C3] rtnl_newlink+0x63/0xa0 [ 45.388181][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.388355][ C3] netlink_rcv_skb+0x130/0x360 [ 45.388527][ C3] netlink_unicast+0x449/0x710 [ 45.388701][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.388958][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.389131][ C3] ___sys_sendmsg+0xee/0x170 [ 45.389314][ C3] __sys_sendmsg+0xcd/0x170 [ 45.389566][ C3] do_syscall_64+0xc6/0x1e0 [ 45.389738][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.389945][ C3] } [ 45.390014][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.390378][ C3] ... acquired at: [ 45.390480][ C3] mark_lock+0x28d/0x3e0 [ 45.390625][ C3] mark_usage+0xd9/0x2a0 [ 45.390763][ C3] __lock_acquire+0x797/0x1570 [ 45.390980][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.391118][ C3] _raw_spin_lock+0x30/0x40 [ 45.391262][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.391470][ C3] call_timer_fn+0x13b/0x230 [ 45.391691][ C3] __run_timers+0x545/0x810 [ 45.391829][ C3] timer_expire_remote+0x9b/0xe0 [ 45.391972][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.392111][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.392330][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.392467][ C3] __do_softirq+0x1f8/0x5df [ 45.392611][ C3] irq_exit_rcu+0x97/0xc0 [ 45.392750][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.393005][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.393177][ C3] default_idle+0xf/0x20 [ 45.393320][ C3] default_idle_call+0x6d/0xb0 [ 45.393459][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.393684][ C3] do_idle+0xf9/0x160 [ 45.393790][ C3] cpu_startup_entry+0x54/0x60 [ 45.393931][ C3] start_secondary+0x21c/0x2b0 [ 45.394069][ C3] common_startup_64+0x12c/0x138 [ 45.394209][ C3] [ 45.394358][ C3] [ 45.394358][ C3] stack backtrace: [ 45.394525][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.394738][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.395123][ C3] Call Trace: [ 45.395238][ C3] [ 45.395313][ C3] dump_stack_lvl+0x82/0xd0 [ 45.395456][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.395705][ C3] ? common_startup_64+0x12c/0x138 [ 45.395853][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.396024][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.396167][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.396465][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.396610][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.396749][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.396887][ C3] ? stack_trace_save+0x94/0xd0 [ 45.397105][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.397243][ C3] ? save_trace+0x8f/0x5b0 [ 45.397386][ C3] mark_lock+0x28d/0x3e0 [ 45.397491][ C3] mark_usage+0xd9/0x2a0 [ 45.397595][ C3] __lock_acquire+0x797/0x1570 [ 45.397813][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.397951][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.398213][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.398350][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.398635][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.398779][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.398916][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.399123][ C3] ? lock_acquire+0x32/0xc0 [ 45.399344][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.399551][ C3] _raw_spin_lock+0x30/0x40 [ 45.399689][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.399981][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.400191][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.400430][ C3] call_timer_fn+0x13b/0x230 [ 45.400569][ C3] ? call_timer_fn+0xe8/0x230 [ 45.400787][ C3] ? call_timer_fn+0xe8/0x230 [ 45.400926][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.401063][ C3] ? mark_lock+0x38/0x3e0 [ 45.401170][ C3] __run_timers+0x545/0x810 [ 45.401392][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.401637][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.401775][ C3] ? __lock_release+0x103/0x460 [ 45.401913][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.402133][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.402271][ C3] ? lock_acquire+0x32/0xc0 [ 45.402408][ C3] ? timer_expire_remote+0x93/0xe0 [ 45.402547][ C3] timer_expire_remote+0x9b/0xe0 [ 45.402772][ C3] tmigr_handle_remote_cpu+0x270/0x430 [ 45.402911][ C3] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 45.403085][ C3] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.403223][ C3] tmigr_handle_remote+0x21d/0x3a0 [ 45.403441][ C3] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 45.403582][ C3] __do_softirq+0x1f8/0x5df [ 45.403719][ C3] irq_exit_rcu+0x97/0xc0 [ 45.403822][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.403968][ C3] [ 45.404118][ C3] [ 45.404191][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.404371][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.404520][ 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 [ 45.405094][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 45.405274][ C3] RAX: 0000000000090cb1 RBX: 1ffff9200002dfc1 RCX: ffffffffb0b0e9d5 [ 45.405564][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffae4aa4a4 [ 45.405767][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 45.405973][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 45.406266][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.406475][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.406613][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.406838][ C3] default_idle_call+0x6d/0xb0 [ 45.406975][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.407113][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.407250][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.407393][ C3] do_idle+0xf9/0x160 [ 45.407659][ C3] cpu_startup_entry+0x54/0x60 [ 45.407795][ C3] start_secondary+0x21c/0x2b0 [ 45.407932][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.408095][ C3] common_startup_64+0x12c/0x138 [ 45.408318][ C3] [ 61.569188][ T377] br0: port 2(veth2) entered disabled state [ 61.658499][ T378] br0: port 1(veth1) entered disabled state [ 61.757125][ T379] veth2: left allmulticast mode [ 61.757328][ T379] veth2: left promiscuous mode [ 61.757575][ T379] br0: port 2(veth2) entered disabled state [ 61.758575][ T379] veth1: left allmulticast mode [ 61.758727][ T379] veth1: left promiscuous mode [ 61.758974][ T379] br0: port 1(veth1) entered disabled state