[ 27.349682][ T275] 8021q: 802.1Q VLAN Support v1.8 [ 28.919385][ T290] br0: port 1(veth1) entered blocking state [ 28.919799][ T290] br0: port 1(veth1) entered disabled state [ 28.920159][ T290] veth1: entered allmulticast mode [ 28.923464][ T290] veth1: entered promiscuous mode [ 29.039504][ T292] br0: port 2(veth2) entered blocking state [ 29.039755][ T292] br0: port 2(veth2) entered disabled state [ 29.040002][ T292] veth2: entered allmulticast mode [ 29.042841][ T292] veth2: entered promiscuous mode [ 29.288314][ T50] br0: port 1(veth1) entered blocking state [ 29.288762][ T50] br0: port 1(veth1) entered forwarding state [ 29.415919][ T49] br0: port 2(veth2) entered blocking state [ 29.416277][ T49] br0: port 2(veth2) entered forwarding state [ 44.338306][ C2] [ 44.338510][ C2] ======================================================== [ 44.338736][ C2] WARNING: possible irq lock inversion dependency detected [ 44.338945][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 44.339084][ C2] -------------------------------------------------------- [ 44.339294][ C2] swapper/2/0 just changed the state of lock: [ 44.339466][ C2] ffff888007e92c38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.339849][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.340053][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 44.340057][ C2] [ 44.340057][ C2] [ 44.340057][ C2] and interrupts could create inverse lock ordering between them. [ 44.340057][ C2] [ 44.340582][ C2] [ 44.340582][ C2] other info that might help us debug this: [ 44.340783][ C2] Chain exists of: [ 44.340783][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.340783][ C2] [ 44.341089][ C2] Possible interrupt unsafe locking scenario: [ 44.341089][ C2] [ 44.341293][ C2] CPU0 CPU1 [ 44.341433][ C2] ---- ---- [ 44.341568][ C2] lock(&p->alloc_lock); [ 44.341675][ C2] local_irq_disable(); [ 44.341847][ C2] lock(&br->lock); [ 44.342019][ C2] lock(lweventlist_lock); [ 44.342194][ C2] [ 44.342304][ C2] lock(&br->lock); [ 44.342416][ C2] [ 44.342416][ C2] *** DEADLOCK *** [ 44.342416][ C2] [ 44.342616][ C2] 1 lock held by swapper/2/0: [ 44.342756][ C2] #0: ffffc90000230d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.343058][ C2] [ 44.343058][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 44.343306][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.343452][ C2] HARDIRQ-ON-W at: [ 44.343567][ C2] __lock_acquire+0x797/0x1570 [ 44.343747][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.343919][ C2] _raw_spin_lock+0x30/0x40 [ 44.344096][ C2] set_mems_allowed+0x1d/0x210 [ 44.344276][ C2] kernel_init_freeable+0x72/0x310 [ 44.344462][ C2] kernel_init+0x20/0x200 [ 44.344642][ C2] ret_from_fork+0x31/0x70 [ 44.344824][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.344996][ C2] SOFTIRQ-ON-W at: [ 44.345099][ C2] __lock_acquire+0x797/0x1570 [ 44.345272][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.345457][ C2] _raw_spin_lock+0x30/0x40 [ 44.345634][ C2] set_mems_allowed+0x1d/0x210 [ 44.345806][ C2] kernel_init_freeable+0x72/0x310 [ 44.345983][ C2] kernel_init+0x20/0x200 [ 44.346158][ C2] ret_from_fork+0x31/0x70 [ 44.346333][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.346513][ C2] INITIAL USE at: [ 44.346620][ C2] __lock_acquire+0x797/0x1570 [ 44.346794][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.346971][ C2] _raw_spin_lock+0x30/0x40 [ 44.347144][ C2] set_mems_allowed+0x1d/0x210 [ 44.347318][ C2] kernel_init_freeable+0x72/0x310 [ 44.347490][ C2] kernel_init+0x20/0x200 [ 44.347666][ C2] ret_from_fork+0x31/0x70 [ 44.347840][ C2] ret_from_fork_asm+0x1a/0x30 [ 44.348013][ C2] } [ 44.348085][ C2] ... key at: [] __key.387+0x0/0x40 [ 44.348296][ C2] ... acquired at: [ 44.348403][ C2] __lock_acquire+0xaf0/0x1570 [ 44.348542][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.348681][ C2] _raw_spin_lock+0x30/0x40 [ 44.348822][ C2] __get_task_comm+0x27/0x70 [ 44.348965][ C2] ref_tracker_alloc+0x2ee/0x490 [ 44.349106][ C2] linkwatch_fire_event+0x196/0x200 [ 44.349248][ C2] veth_newlink+0x367/0x830 [veth] [ 44.349396][ C2] rtnl_newlink_create+0x341/0x850 [ 44.349534][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.349677][ C2] rtnl_newlink+0x63/0xa0 [ 44.349824][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.349965][ C2] netlink_rcv_skb+0x130/0x360 [ 44.350104][ C2] netlink_unicast+0x449/0x710 [ 44.350246][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.350382][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.350526][ C2] ___sys_sendmsg+0xee/0x170 [ 44.350668][ C2] __sys_sendmsg+0xcd/0x170 [ 44.350810][ C2] do_syscall_64+0xc6/0x1e0 [ 44.350948][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.351122][ C2] [ 44.351197][ C2] -> (lweventlist_lock){....}-{2:2} { [ 44.351345][ C2] INITIAL USE at: [ 44.351450][ C2] __lock_acquire+0x797/0x1570 [ 44.351622][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.351795][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.351970][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 44.352146][ C2] rtnl_getlink+0x4c9/0x970 [ 44.352318][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.352489][ C2] netlink_rcv_skb+0x130/0x360 [ 44.352661][ C2] netlink_unicast+0x449/0x710 [ 44.352831][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.353002][ C2] __sys_sendto+0x37d/0x410 [ 44.353195][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.353367][ C2] do_syscall_64+0xc6/0x1e0 [ 44.353542][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.353753][ C2] } [ 44.353822][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.354031][ C2] ... acquired at: [ 44.354134][ C2] __lock_acquire+0xaf0/0x1570 [ 44.354281][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.354421][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.354559][ C2] linkwatch_fire_event+0x74/0x200 [ 44.354700][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.354922][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.355133][ C2] dev_set_mac_address+0x28a/0x410 [ 44.355275][ C2] dev_set_mac_address_user+0x31/0x50 [ 44.355419][ C2] do_setlink+0x17b4/0x21e0 [ 44.355564][ C2] rtnl_setlink+0x1f7/0x310 [ 44.355706][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.355846][ C2] netlink_rcv_skb+0x130/0x360 [ 44.355991][ C2] netlink_unicast+0x449/0x710 [ 44.356130][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.356271][ C2] __sys_sendto+0x37d/0x410 [ 44.356412][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 44.356551][ C2] do_syscall_64+0xc6/0x1e0 [ 44.356694][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.356868][ C2] [ 44.356936][ C2] -> (&br->lock){+.-.}-{2:2} { [ 44.357080][ C2] HARDIRQ-ON-W at: [ 44.357185][ C2] __lock_acquire+0x797/0x1570 [ 44.357360][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.357535][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.357710][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 44.357960][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.358210][ C2] br_changelink+0x36c/0x1360 [bridge] [ 44.358418][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 44.358628][ C2] rtnl_newlink_create+0x341/0x850 [ 44.358811][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.358985][ C2] rtnl_newlink+0x63/0xa0 [ 44.359165][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.359336][ C2] netlink_rcv_skb+0x130/0x360 [ 44.359513][ C2] netlink_unicast+0x449/0x710 [ 44.359685][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.359862][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.360039][ C2] ___sys_sendmsg+0xee/0x170 [ 44.360211][ C2] __sys_sendmsg+0xcd/0x170 [ 44.360389][ C2] do_syscall_64+0xc6/0x1e0 [ 44.360565][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.360772][ C2] IN-SOFTIRQ-W at: [ 44.360884][ C2] __lock_acquire+0x797/0x1570 [ 44.361058][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.361234][ C2] _raw_spin_lock+0x30/0x40 [ 44.361418][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.361663][ C2] call_timer_fn+0x13b/0x230 [ 44.361843][ C2] __run_timers+0x545/0x810 [ 44.362015][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.362187][ C2] __do_softirq+0x1f8/0x5df [ 44.362360][ C2] irq_exit_rcu+0x97/0xc0 [ 44.362536][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.362751][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.362969][ C2] default_idle+0xf/0x20 [ 44.363155][ C2] default_idle_call+0x6d/0xb0 [ 44.363329][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.363502][ C2] do_idle+0xf9/0x160 [ 44.363644][ C2] cpu_startup_entry+0x54/0x60 [ 44.363821][ C2] start_secondary+0x21c/0x2b0 [ 44.364005][ C2] common_startup_64+0x12c/0x138 [ 44.364179][ C2] INITIAL USE at: [ 44.364289][ C2] __lock_acquire+0x797/0x1570 [ 44.364463][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.364636][ C2] _raw_spin_lock_bh+0x38/0x50 [ 44.364812][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 44.365151][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.365395][ C2] br_changelink+0x36c/0x1360 [bridge] [ 44.365605][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 44.365893][ C2] rtnl_newlink_create+0x341/0x850 [ 44.366066][ C2] __rtnl_newlink+0xac9/0xd80 [ 44.366247][ C2] rtnl_newlink+0x63/0xa0 [ 44.366503][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.366674][ C2] netlink_rcv_skb+0x130/0x360 [ 44.366848][ C2] netlink_unicast+0x449/0x710 [ 44.367098][ C2] netlink_sendmsg+0x723/0xbe0 [ 44.367279][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 44.367457][ C2] ___sys_sendmsg+0xee/0x170 [ 44.367636][ C2] __sys_sendmsg+0xcd/0x170 [ 44.367892][ C2] do_syscall_64+0xc6/0x1e0 [ 44.368064][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.368269][ C2] } [ 44.368345][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.368695][ C2] ... acquired at: [ 44.368797][ C2] mark_lock+0x28d/0x3e0 [ 44.368941][ C2] mark_usage+0xd9/0x2a0 [ 44.369231][ C2] __lock_acquire+0x797/0x1570 [ 44.369368][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.369515][ C2] _raw_spin_lock+0x30/0x40 [ 44.369653][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.369938][ C2] call_timer_fn+0x13b/0x230 [ 44.370074][ C2] __run_timers+0x545/0x810 [ 44.370213][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.370362][ C2] __do_softirq+0x1f8/0x5df [ 44.370506][ C2] irq_exit_rcu+0x97/0xc0 [ 44.370722][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.370893][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.371064][ C2] default_idle+0xf/0x20 [ 44.371279][ C2] default_idle_call+0x6d/0xb0 [ 44.371417][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.371555][ C2] do_idle+0xf9/0x160 [ 44.371659][ C2] cpu_startup_entry+0x54/0x60 [ 44.371801][ C2] start_secondary+0x21c/0x2b0 [ 44.372016][ C2] common_startup_64+0x12c/0x138 [ 44.372155][ C2] [ 44.372224][ C2] [ 44.372224][ C2] stack backtrace: [ 44.372394][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 44.372682][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.372989][ C2] Call Trace: [ 44.373116][ C2] [ 44.373190][ C2] dump_stack_lvl+0x82/0xd0 [ 44.373411][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.373583][ C2] ? common_startup_64+0x12c/0x138 [ 44.373726][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.373974][ C2] ? __pfx_usage_skip+0x10/0x10 [ 44.374111][ C2] ? __pfx_usage_match+0x10/0x10 [ 44.374247][ C2] ? arch_stack_walk+0x8c/0xf0 [ 44.374393][ C2] mark_lock_irq+0x4cd/0xa10 [ 44.374532][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.374746][ C2] ? stack_trace_save+0x94/0xd0 [ 44.374885][ C2] ? add_chain_cache+0x248/0x8b0 [ 44.375023][ C2] ? save_trace+0x8f/0x5b0 [ 44.375161][ C2] mark_lock+0x28d/0x3e0 [ 44.375342][ C2] mark_usage+0xd9/0x2a0 [ 44.375446][ C2] __lock_acquire+0x797/0x1570 [ 44.375585][ C2] ? __lock_acquire+0xaf0/0x1570 [ 44.375727][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.376067][ C2] lock_acquire.part.0+0xeb/0x330 [ 44.376208][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.376415][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.376555][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 44.376772][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.376988][ C2] ? lock_acquire+0x32/0xc0 [ 44.377131][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.377338][ C2] _raw_spin_lock+0x30/0x40 [ 44.377553][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.377760][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.377974][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.378289][ C2] call_timer_fn+0x13b/0x230 [ 44.378430][ C2] ? call_timer_fn+0xe8/0x230 [ 44.378571][ C2] ? call_timer_fn+0xe8/0x230 [ 44.378708][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 44.378927][ C2] ? mark_lock+0x38/0x3e0 [ 44.379036][ C2] __run_timers+0x545/0x810 [ 44.379178][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.379423][ C2] ? __pfx___run_timers+0x10/0x10 [ 44.379646][ C2] ? do_raw_spin_lock+0x131/0x270 [ 44.379786][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.379926][ C2] ? lock_acquire+0x32/0xc0 [ 44.380063][ C2] ? run_timer_softirq+0xe0/0x1b0 [ 44.380202][ C2] run_timer_softirq+0xe8/0x1b0 [ 44.380500][ C2] __do_softirq+0x1f8/0x5df [ 44.380640][ C2] irq_exit_rcu+0x97/0xc0 [ 44.380747][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.380885][ C2] [ 44.380958][ C2] [ 44.381104][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.381285][ C2] RIP: 0010:default_idle+0xf/0x20 [ 44.381430][ 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 [ 44.382004][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 44.382194][ C2] RAX: 00000000000d534b RBX: 1ffff9200002bfc1 RCX: ffffffff8550e9d5 [ 44.382483][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff82eaa4a4 [ 44.382693][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 44.382900][ C2] R10: ffff8880361384e3 R11: ffff88803612d9b0 R12: 0000000000000000 [ 44.383216][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 44.383425][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.383570][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 44.383710][ C2] default_idle_call+0x6d/0xb0 [ 44.383923][ C2] cpuidle_idle_call+0x1f4/0x280 [ 44.384066][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.384204][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.384344][ C2] do_idle+0xf9/0x160 [ 44.384525][ C2] cpu_startup_entry+0x54/0x60 [ 44.384677][ C2] start_secondary+0x21c/0x2b0 [ 44.384821][ C2] ? __pfx_start_secondary+0x10/0x10 [ 44.384961][ C2] common_startup_64+0x12c/0x138 [ 44.385184][ C2] [ 58.523378][ T352] GACT probability NOT on [ 89.362693][ T527] br1: port 1(veth0) entered blocking state [ 89.362921][ T527] br1: port 1(veth0) entered disabled state [ 89.363108][ T527] veth0: entered allmulticast mode [ 89.364602][ T527] veth0: entered promiscuous mode [ 89.369608][ T527] ip (527) used greatest stack depth: 23856 bytes left [ 89.450371][ T529] br1: port 1(veth0) entered blocking state [ 89.450596][ T529] br1: port 1(veth0) entered forwarding state [ 91.796409][ T534] veth0: left allmulticast mode [ 91.796581][ T534] veth0: left promiscuous mode [ 91.796827][ T534] br1: port 1(veth0) entered disabled state [ 104.351398][ T619] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 104.731589][ T625] br0: port 2(veth2) entered disabled state [ 104.833913][ T626] br0: port 1(veth1) entered disabled state [ 104.925969][ T627] veth2: left allmulticast mode [ 104.926873][ T627] veth2: left promiscuous mode [ 104.927230][ T627] br0: port 2(veth2) entered disabled state [ 104.928676][ T627] veth1: left allmulticast mode [ 104.928818][ T627] veth1: left promiscuous mode [ 104.929052][ T627] br0: port 1(veth1) entered disabled state