[ 24.806488][ T239] ip (239) used greatest stack depth: 23328 bytes left [ 27.897981][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 29.552939][ T292] br0: port 1(veth1) entered blocking state [ 29.553300][ T292] br0: port 1(veth1) entered disabled state [ 29.553939][ T292] veth1: entered allmulticast mode [ 29.555844][ T292] veth1: entered promiscuous mode [ 29.675253][ T294] br0: port 2(veth2) entered blocking state [ 29.675511][ T294] br0: port 2(veth2) entered disabled state [ 29.675787][ T294] veth2: entered allmulticast mode [ 29.677721][ T294] veth2: entered promiscuous mode [ 29.951508][ T51] br0: port 1(veth1) entered blocking state [ 29.951877][ T51] br0: port 1(veth1) entered forwarding state [ 30.076270][ T50] br0: port 2(veth2) entered blocking state [ 30.076534][ T50] br0: port 2(veth2) entered forwarding state [ 45.379929][ C3] [ 45.380173][ C3] ======================================================== [ 45.380494][ C3] WARNING: possible irq lock inversion dependency detected [ 45.380766][ C3] 6.9.0-rc1-virtme #1 Not tainted [ 45.380950][ C3] -------------------------------------------------------- [ 45.381190][ C3] swapper/3/0 just changed the state of lock: [ 45.381413][ C3] ffff88800668ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.381877][ C3] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.382107][ C3] (&p->alloc_lock){+.+.}-{2:2} [ 45.382112][ C3] [ 45.382112][ C3] [ 45.382112][ C3] and interrupts could create inverse lock ordering between them. [ 45.382112][ C3] [ 45.382700][ C3] [ 45.382700][ C3] other info that might help us debug this: [ 45.382935][ C3] Chain exists of: [ 45.382935][ C3] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.382935][ C3] [ 45.383344][ C3] Possible interrupt unsafe locking scenario: [ 45.383344][ C3] [ 45.383594][ C3] CPU0 CPU1 [ 45.383737][ C3] ---- ---- [ 45.383875][ C3] lock(&p->alloc_lock); [ 45.384012][ C3] local_irq_disable(); [ 45.384200][ C3] lock(&br->lock); [ 45.384382][ C3] lock(lweventlist_lock); [ 45.384563][ C3] [ 45.384677][ C3] lock(&br->lock); [ 45.384809][ C3] [ 45.384809][ C3] *** DEADLOCK *** [ 45.384809][ C3] [ 45.385011][ C3] 1 lock held by swapper/3/0: [ 45.385213][ C3] #0: ffffc90000288d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.385513][ C3] [ 45.385513][ C3] the shortest dependencies between 2nd lock and 1st lock: [ 45.385779][ C3] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.385946][ C3] HARDIRQ-ON-W at: [ 45.386051][ C3] __lock_acquire+0x797/0x1570 [ 45.386242][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.386445][ C3] _raw_spin_lock+0x30/0x40 [ 45.386618][ C3] set_mems_allowed+0x1d/0x210 [ 45.386809][ C3] kernel_init_freeable+0x72/0x310 [ 45.386996][ C3] kernel_init+0x20/0x200 [ 45.387165][ C3] ret_from_fork+0x31/0x70 [ 45.387358][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.387556][ C3] SOFTIRQ-ON-W at: [ 45.387662][ C3] __lock_acquire+0x797/0x1570 [ 45.387841][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.388039][ C3] _raw_spin_lock+0x30/0x40 [ 45.388226][ C3] set_mems_allowed+0x1d/0x210 [ 45.388413][ C3] kernel_init_freeable+0x72/0x310 [ 45.388589][ C3] kernel_init+0x20/0x200 [ 45.388772][ C3] ret_from_fork+0x31/0x70 [ 45.388964][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.389138][ C3] INITIAL USE at: [ 45.389239][ C3] __lock_acquire+0x797/0x1570 [ 45.389418][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.389590][ C3] _raw_spin_lock+0x30/0x40 [ 45.389786][ C3] set_mems_allowed+0x1d/0x210 [ 45.389972][ C3] kernel_init_freeable+0x72/0x310 [ 45.390163][ C3] kernel_init+0x20/0x200 [ 45.390355][ C3] ret_from_fork+0x31/0x70 [ 45.390538][ C3] ret_from_fork_asm+0x1a/0x30 [ 45.390729][ C3] } [ 45.390803][ C3] ... key at: [] __key.387+0x0/0x40 [ 45.391049][ C3] ... acquired at: [ 45.391152][ C3] __lock_acquire+0xaf0/0x1570 [ 45.391300][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.391435][ C3] _raw_spin_lock+0x30/0x40 [ 45.391576][ C3] __get_task_comm+0x27/0x70 [ 45.391716][ C3] ref_tracker_alloc+0x2ee/0x490 [ 45.391857][ C3] linkwatch_fire_event+0x196/0x200 [ 45.392001][ C3] veth_newlink+0x367/0x830 [veth] [ 45.392150][ C3] rtnl_newlink_create+0x341/0x850 [ 45.392290][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.392428][ C3] rtnl_newlink+0x63/0xa0 [ 45.392562][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.392699][ C3] netlink_rcv_skb+0x130/0x360 [ 45.392841][ C3] netlink_unicast+0x449/0x710 [ 45.392982][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.393125][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.393272][ C3] ___sys_sendmsg+0xee/0x170 [ 45.393409][ C3] __sys_sendmsg+0xcd/0x170 [ 45.393546][ C3] do_syscall_64+0xc6/0x1e0 [ 45.393686][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.393861][ C3] [ 45.393932][ C3] -> (lweventlist_lock){....}-{2:2} { [ 45.394075][ C3] INITIAL USE at: [ 45.394182][ C3] __lock_acquire+0x797/0x1570 [ 45.394357][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.394527][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.394695][ C3] linkwatch_sync_dev+0x29/0x1f0 [ 45.394865][ C3] rtnl_getlink+0x4c9/0x970 [ 45.395037][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.395203][ C3] netlink_rcv_skb+0x130/0x360 [ 45.395378][ C3] netlink_unicast+0x449/0x710 [ 45.395547][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.395733][ C3] __sys_sendto+0x37d/0x410 [ 45.395927][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.396118][ C3] do_syscall_64+0xc6/0x1e0 [ 45.396314][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.396549][ C3] } [ 45.396627][ C3] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.396828][ C3] ... acquired at: [ 45.396927][ C3] __lock_acquire+0xaf0/0x1570 [ 45.397061][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.397239][ C3] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.397380][ C3] linkwatch_fire_event+0x74/0x200 [ 45.397540][ C3] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.397790][ C3] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.398046][ C3] dev_set_mac_address+0x28a/0x410 [ 45.398202][ C3] dev_set_mac_address_user+0x31/0x50 [ 45.398371][ C3] do_setlink+0x17b4/0x21e0 [ 45.398523][ C3] rtnl_setlink+0x1f7/0x310 [ 45.398686][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.398854][ C3] netlink_rcv_skb+0x130/0x360 [ 45.399017][ C3] netlink_unicast+0x449/0x710 [ 45.399182][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.399333][ C3] __sys_sendto+0x37d/0x410 [ 45.399500][ C3] __x64_sys_sendto+0xe0/0x1c0 [ 45.399670][ C3] do_syscall_64+0xc6/0x1e0 [ 45.399825][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.400032][ C3] [ 45.400123][ C3] -> (&br->lock){+.-.}-{2:2} { [ 45.400296][ C3] HARDIRQ-ON-W at: [ 45.400420][ C3] __lock_acquire+0x797/0x1570 [ 45.400635][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.400848][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.401042][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.401342][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.401626][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.401865][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.402114][ C3] rtnl_newlink_create+0x341/0x850 [ 45.402306][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.402519][ C3] rtnl_newlink+0x63/0xa0 [ 45.402700][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.402884][ C3] netlink_rcv_skb+0x130/0x360 [ 45.403062][ C3] netlink_unicast+0x449/0x710 [ 45.403266][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.403442][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.403616][ C3] ___sys_sendmsg+0xee/0x170 [ 45.403823][ C3] __sys_sendmsg+0xcd/0x170 [ 45.404028][ C3] do_syscall_64+0xc6/0x1e0 [ 45.404202][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.404428][ C3] IN-SOFTIRQ-W at: [ 45.404543][ C3] __lock_acquire+0x797/0x1570 [ 45.404761][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.404953][ C3] _raw_spin_lock+0x30/0x40 [ 45.405162][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.405425][ C3] call_timer_fn+0x13b/0x230 [ 45.405617][ C3] __run_timers+0x545/0x810 [ 45.405818][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.406012][ C3] __do_softirq+0x1f8/0x5df [ 45.406185][ C3] irq_exit_rcu+0x97/0xc0 [ 45.406374][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.406603][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.406814][ C3] default_idle+0xf/0x20 [ 45.407034][ C3] default_idle_call+0x6d/0xb0 [ 45.407240][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.407434][ C3] do_idle+0xf9/0x160 [ 45.407587][ C3] cpu_startup_entry+0x54/0x60 [ 45.407781][ C3] start_secondary+0x21c/0x2b0 [ 45.407976][ C3] common_startup_64+0x12c/0x138 [ 45.408168][ C3] INITIAL USE at: [ 45.408292][ C3] __lock_acquire+0x797/0x1570 [ 45.408480][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.408670][ C3] _raw_spin_lock_bh+0x38/0x50 [ 45.408863][ C3] recalculate_group_addr+0x55/0x130 [bridge] [ 45.409131][ C3] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.409401][ C3] br_changelink+0x36c/0x1360 [bridge] [ 45.409635][ C3] br_dev_newlink+0xa5/0x100 [bridge] [ 45.409883][ C3] rtnl_newlink_create+0x341/0x850 [ 45.410088][ C3] __rtnl_newlink+0xac9/0xd80 [ 45.410297][ C3] rtnl_newlink+0x63/0xa0 [ 45.410502][ C3] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.410708][ C3] netlink_rcv_skb+0x130/0x360 [ 45.410908][ C3] netlink_unicast+0x449/0x710 [ 45.411115][ C3] netlink_sendmsg+0x723/0xbe0 [ 45.411313][ C3] ____sys_sendmsg+0x7b2/0xa10 [ 45.411502][ C3] ___sys_sendmsg+0xee/0x170 [ 45.411721][ C3] __sys_sendmsg+0xcd/0x170 [ 45.411938][ C3] do_syscall_64+0xc6/0x1e0 [ 45.412118][ C3] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.412351][ C3] } [ 45.412424][ C3] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.412809][ C3] ... acquired at: [ 45.412912][ C3] mark_lock+0x28d/0x3e0 [ 45.413058][ C3] mark_usage+0xd9/0x2a0 [ 45.413202][ C3] __lock_acquire+0x797/0x1570 [ 45.413425][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.413584][ C3] _raw_spin_lock+0x30/0x40 [ 45.413728][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.413986][ C3] call_timer_fn+0x13b/0x230 [ 45.414237][ C3] __run_timers+0x545/0x810 [ 45.414373][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.414515][ C3] __do_softirq+0x1f8/0x5df [ 45.414660][ C3] irq_exit_rcu+0x97/0xc0 [ 45.414987][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.415170][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.415342][ C3] default_idle+0xf/0x20 [ 45.415481][ C3] default_idle_call+0x6d/0xb0 [ 45.415643][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.415795][ C3] do_idle+0xf9/0x160 [ 45.415912][ C3] cpu_startup_entry+0x54/0x60 [ 45.416064][ C3] start_secondary+0x21c/0x2b0 [ 45.416282][ C3] common_startup_64+0x12c/0x138 [ 45.416416][ C3] [ 45.416484][ C3] [ 45.416484][ C3] stack backtrace: [ 45.416651][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc1-virtme #1 [ 45.416947][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.417280][ C3] Call Trace: [ 45.417398][ C3] [ 45.417481][ C3] dump_stack_lvl+0x82/0xd0 [ 45.417716][ C3] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.417906][ C3] ? common_startup_64+0x12c/0x138 [ 45.418063][ C3] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.418252][ C3] ? __pfx_usage_skip+0x10/0x10 [ 45.418478][ C3] ? __pfx_usage_match+0x10/0x10 [ 45.418629][ C3] ? arch_stack_walk+0x8c/0xf0 [ 45.418790][ C3] mark_lock_irq+0x4cd/0xa10 [ 45.418987][ C3] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.419201][ C3] ? stack_trace_save+0x94/0xd0 [ 45.419340][ C3] ? add_chain_cache+0x248/0x8b0 [ 45.419501][ C3] ? save_trace+0x8f/0x5b0 [ 45.419637][ C3] mark_lock+0x28d/0x3e0 [ 45.419759][ C3] mark_usage+0xd9/0x2a0 [ 45.419960][ C3] __lock_acquire+0x797/0x1570 [ 45.420107][ C3] ? __lock_acquire+0xaf0/0x1570 [ 45.420277][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.420556][ C3] lock_acquire.part.0+0xeb/0x330 [ 45.420711][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.420926][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.421087][ C3] ? trace_lock_acquire+0x135/0x1c0 [ 45.421222][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.421516][ C3] ? lock_acquire+0x32/0xc0 [ 45.421656][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.421891][ C3] _raw_spin_lock+0x30/0x40 [ 45.422115][ C3] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.422372][ C3] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.422604][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.422839][ C3] call_timer_fn+0x13b/0x230 [ 45.423063][ C3] ? call_timer_fn+0xe8/0x230 [ 45.423198][ C3] ? call_timer_fn+0xe8/0x230 [ 45.423337][ C3] ? __pfx_call_timer_fn+0x10/0x10 [ 45.423486][ C3] ? mark_lock+0x38/0x3e0 [ 45.423671][ C3] __run_timers+0x545/0x810 [ 45.423805][ C3] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.424058][ C3] ? __pfx___run_timers+0x10/0x10 [ 45.424209][ C3] ? do_raw_spin_lock+0x131/0x270 [ 45.424440][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.424577][ C3] ? lock_acquire+0x32/0xc0 [ 45.424709][ C3] ? run_timer_softirq+0xe0/0x1b0 [ 45.424845][ C3] run_timer_softirq+0xe8/0x1b0 [ 45.425068][ C3] __do_softirq+0x1f8/0x5df [ 45.425213][ C3] irq_exit_rcu+0x97/0xc0 [ 45.425327][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.425477][ C3] [ 45.425556][ C3] [ 45.425635][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.425904][ C3] RIP: 0010:default_idle+0xf/0x20 [ 45.426068][ 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 [ 45.426739][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000246 [ 45.426936][ C3] RAX: 0000000000085769 RBX: 1ffff9200002dfc1 RCX: ffffffffae90e9d5 [ 45.427168][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffac2aa4a4 [ 45.427476][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 45.427711][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 45.428056][ C3] R13: ffff888001b88040 R14: dffffc0000000000 R15: 0000000000000000 [ 45.428298][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.428455][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 45.428634][ C3] default_idle_call+0x6d/0xb0 [ 45.428894][ C3] cpuidle_idle_call+0x1f4/0x280 [ 45.429046][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.429215][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.429372][ C3] do_idle+0xf9/0x160 [ 45.429489][ C3] cpu_startup_entry+0x54/0x60 [ 45.429647][ C3] start_secondary+0x21c/0x2b0 [ 45.429797][ C3] ? __pfx_start_secondary+0x10/0x10 [ 45.429975][ C3] common_startup_64+0x12c/0x138 [ 45.430177][ C3] [ 59.356695][ T354] GACT probability NOT on [ 90.545274][ T531] br1: port 1(veth0) entered blocking state [ 90.545507][ T531] br1: port 1(veth0) entered disabled state [ 90.545699][ T531] veth0: entered allmulticast mode [ 90.547144][ T531] veth0: entered promiscuous mode [ 90.661631][ T532] br1: port 1(veth0) entered blocking state [ 90.661859][ T532] br1: port 1(veth0) entered forwarding state [ 93.026137][ T537] veth0: left allmulticast mode [ 93.026315][ T537] veth0: left promiscuous mode [ 93.026563][ T537] br1: port 1(veth0) entered disabled state [ 105.786826][ T622] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 106.244153][ T628] br0: port 2(veth2) entered disabled state [ 106.352057][ T629] br0: port 1(veth1) entered disabled state [ 106.451092][ T630] veth2: left allmulticast mode [ 106.451280][ T630] veth2: left promiscuous mode [ 106.451523][ T630] br0: port 2(veth2) entered disabled state [ 106.453501][ T630] veth1: left allmulticast mode [ 106.453653][ T630] veth1: left promiscuous mode [ 106.453909][ T630] br0: port 1(veth1) entered disabled state