[ 27.049046][ T277] 8021q: 802.1Q VLAN Support v1.8 [ 28.687743][ T292] br0: port 1(veth1) entered blocking state [ 28.688144][ T292] br0: port 1(veth1) entered disabled state [ 28.688517][ T292] veth1: entered allmulticast mode [ 28.690619][ T292] veth1: entered promiscuous mode [ 28.819895][ T294] br0: port 2(veth2) entered blocking state [ 28.820149][ T294] br0: port 2(veth2) entered disabled state [ 28.820846][ T294] veth2: entered allmulticast mode [ 28.822727][ T294] veth2: entered promiscuous mode [ 29.074546][ T240] br0: port 1(veth1) entered blocking state [ 29.074890][ T240] br0: port 1(veth1) entered forwarding state [ 29.198983][ T240] br0: port 2(veth2) entered blocking state [ 29.199262][ T240] br0: port 2(veth2) entered forwarding state [ 33.460014][ T255] (udev-worker) (255) used greatest stack depth: 24232 bytes left [ 44.352526][ C1] [ 44.352680][ C1] ======================================================== [ 44.352881][ C1] WARNING: possible irq lock inversion dependency detected [ 44.353074][ C1] 6.9.0-rc1-virtme #1 Not tainted [ 44.353204][ C1] -------------------------------------------------------- [ 44.353414][ C1] swapper/1/0 just changed the state of lock: [ 44.353581][ C1] ffff888007a6ac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.353919][ C1] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 44.354115][ C1] (&p->alloc_lock){+.+.}-{2:2} [ 44.354120][ C1] [ 44.354120][ C1] [ 44.354120][ C1] and interrupts could create inverse lock ordering between them. [ 44.354120][ C1] [ 44.354628][ C1] [ 44.354628][ C1] other info that might help us debug this: [ 44.354825][ C1] Chain exists of: [ 44.354825][ C1] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 44.354825][ C1] [ 44.355136][ C1] Possible interrupt unsafe locking scenario: [ 44.355136][ C1] [ 44.355360][ C1] CPU0 CPU1 [ 44.355493][ C1] ---- ---- [ 44.355642][ C1] lock(&p->alloc_lock); [ 44.355744][ C1] local_irq_disable(); [ 44.355917][ C1] lock(&br->lock); [ 44.356091][ C1] lock(lweventlist_lock); [ 44.356293][ C1] [ 44.356397][ C1] lock(&br->lock); [ 44.356526][ C1] [ 44.356526][ C1] *** DEADLOCK *** [ 44.356526][ C1] [ 44.356723][ C1] 1 lock held by swapper/1/0: [ 44.356855][ C1] #0: ffffc900001d8d68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 44.357155][ C1] [ 44.357155][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 44.357402][ C1] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.357558][ C1] HARDIRQ-ON-W at: [ 44.357659][ C1] __lock_acquire+0x797/0x1570 [ 44.357862][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.358040][ C1] _raw_spin_lock+0x30/0x40 [ 44.358207][ C1] set_mems_allowed+0x1d/0x210 [ 44.358397][ C1] kernel_init_freeable+0x72/0x310 [ 44.358564][ C1] kernel_init+0x20/0x200 [ 44.358743][ C1] ret_from_fork+0x31/0x70 [ 44.358918][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.359084][ C1] SOFTIRQ-ON-W at: [ 44.359185][ C1] __lock_acquire+0x797/0x1570 [ 44.359387][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.359578][ C1] _raw_spin_lock+0x30/0x40 [ 44.359746][ C1] set_mems_allowed+0x1d/0x210 [ 44.359912][ C1] kernel_init_freeable+0x72/0x310 [ 44.360079][ C1] kernel_init+0x20/0x200 [ 44.360249][ C1] ret_from_fork+0x31/0x70 [ 44.360449][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.360642][ C1] INITIAL USE at: [ 44.360741][ C1] __lock_acquire+0x797/0x1570 [ 44.360928][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.361098][ C1] _raw_spin_lock+0x30/0x40 [ 44.361275][ C1] set_mems_allowed+0x1d/0x210 [ 44.361473][ C1] kernel_init_freeable+0x72/0x310 [ 44.361639][ C1] kernel_init+0x20/0x200 [ 44.361815][ C1] ret_from_fork+0x31/0x70 [ 44.361994][ C1] ret_from_fork_asm+0x1a/0x30 [ 44.362166][ C1] } [ 44.362245][ C1] ... key at: [] __key.387+0x0/0x40 [ 44.362461][ C1] ... acquired at: [ 44.362570][ C1] __lock_acquire+0xaf0/0x1570 [ 44.362707][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.362849][ C1] _raw_spin_lock+0x30/0x40 [ 44.362981][ C1] __get_task_comm+0x27/0x70 [ 44.363114][ C1] ref_tracker_alloc+0x2ee/0x490 [ 44.363253][ C1] linkwatch_fire_event+0x196/0x200 [ 44.363391][ C1] veth_newlink+0x367/0x830 [veth] [ 44.363529][ C1] rtnl_newlink_create+0x341/0x850 [ 44.363661][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.363794][ C1] rtnl_newlink+0x63/0xa0 [ 44.363935][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.364068][ C1] netlink_rcv_skb+0x130/0x360 [ 44.364205][ C1] netlink_unicast+0x449/0x710 [ 44.364353][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.364490][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.364625][ C1] ___sys_sendmsg+0xee/0x170 [ 44.364770][ C1] __sys_sendmsg+0xcd/0x170 [ 44.364903][ C1] do_syscall_64+0xc6/0x1e0 [ 44.365043][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.365215][ C1] [ 44.365289][ C1] -> (lweventlist_lock){....}-{2:2} { [ 44.365449][ C1] INITIAL USE at: [ 44.365549][ C1] __lock_acquire+0x797/0x1570 [ 44.365718][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.365892][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.366060][ C1] linkwatch_sync_dev+0x29/0x1f0 [ 44.366249][ C1] rtnl_getlink+0x4c9/0x970 [ 44.366429][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.366599][ C1] netlink_rcv_skb+0x130/0x360 [ 44.366779][ C1] netlink_unicast+0x449/0x710 [ 44.366943][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.367116][ C1] __sys_sendto+0x37d/0x410 [ 44.367286][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.367497][ C1] do_syscall_64+0xc6/0x1e0 [ 44.367662][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.367859][ C1] } [ 44.367926][ C1] ... key at: [] lweventlist_lock+0x18/0x60 [ 44.368132][ C1] ... acquired at: [ 44.368229][ C1] __lock_acquire+0xaf0/0x1570 [ 44.368367][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.368500][ C1] _raw_spin_lock_irqsave+0x3f/0x60 [ 44.368636][ C1] linkwatch_fire_event+0x74/0x200 [ 44.368768][ C1] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 44.368972][ C1] br_set_mac_address+0x1f3/0x260 [bridge] [ 44.369170][ C1] dev_set_mac_address+0x28a/0x410 [ 44.369309][ C1] dev_set_mac_address_user+0x31/0x50 [ 44.369440][ C1] do_setlink+0x17b4/0x21e0 [ 44.369583][ C1] rtnl_setlink+0x1f7/0x310 [ 44.369723][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.369854][ C1] netlink_rcv_skb+0x130/0x360 [ 44.369995][ C1] netlink_unicast+0x449/0x710 [ 44.370125][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.370257][ C1] __sys_sendto+0x37d/0x410 [ 44.370405][ C1] __x64_sys_sendto+0xe0/0x1c0 [ 44.370536][ C1] do_syscall_64+0xc6/0x1e0 [ 44.370677][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.370839][ C1] [ 44.370914][ C1] -> (&br->lock){+.-.}-{2:2} { [ 44.371050][ C1] HARDIRQ-ON-W at: [ 44.371161][ C1] __lock_acquire+0x797/0x1570 [ 44.371334][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.371516][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.371682][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.371930][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.372171][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.372386][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.372587][ C1] rtnl_newlink_create+0x341/0x850 [ 44.372751][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.372918][ C1] rtnl_newlink+0x63/0xa0 [ 44.373082][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.373251][ C1] netlink_rcv_skb+0x130/0x360 [ 44.373426][ C1] netlink_unicast+0x449/0x710 [ 44.373590][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.373756][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.373920][ C1] ___sys_sendmsg+0xee/0x170 [ 44.374089][ C1] __sys_sendmsg+0xcd/0x170 [ 44.374254][ C1] do_syscall_64+0xc6/0x1e0 [ 44.374437][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.374638][ C1] IN-SOFTIRQ-W at: [ 44.374739][ C1] __lock_acquire+0x797/0x1570 [ 44.374906][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.375071][ C1] _raw_spin_lock+0x30/0x40 [ 44.375250][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.375502][ C1] call_timer_fn+0x13b/0x230 [ 44.375669][ C1] __run_timers+0x545/0x810 [ 44.375837][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.376001][ C1] __do_softirq+0x1f8/0x5df [ 44.376174][ C1] irq_exit_rcu+0x97/0xc0 [ 44.376373][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.376600][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.376804][ C1] default_idle+0xf/0x20 [ 44.376971][ C1] default_idle_call+0x6d/0xb0 [ 44.377139][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.377311][ C1] do_idle+0xf9/0x160 [ 44.377445][ C1] cpu_startup_entry+0x54/0x60 [ 44.377615][ C1] start_secondary+0x21c/0x2b0 [ 44.377787][ C1] common_startup_64+0x12c/0x138 [ 44.377954][ C1] INITIAL USE at: [ 44.378052][ C1] __lock_acquire+0x797/0x1570 [ 44.378219][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.378396][ C1] _raw_spin_lock_bh+0x38/0x50 [ 44.378563][ C1] recalculate_group_addr+0x55/0x130 [bridge] [ 44.378802][ C1] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 44.379041][ C1] br_changelink+0x36c/0x1360 [bridge] [ 44.379243][ C1] br_dev_newlink+0xa5/0x100 [bridge] [ 44.379535][ C1] rtnl_newlink_create+0x341/0x850 [ 44.379700][ C1] __rtnl_newlink+0xac9/0xd80 [ 44.379867][ C1] rtnl_newlink+0x63/0xa0 [ 44.380033][ C1] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.380363][ C1] netlink_rcv_skb+0x130/0x360 [ 44.380530][ C1] netlink_unicast+0x449/0x710 [ 44.380694][ C1] netlink_sendmsg+0x723/0xbe0 [ 44.380938][ C1] ____sys_sendmsg+0x7b2/0xa10 [ 44.381106][ C1] ___sys_sendmsg+0xee/0x170 [ 44.381274][ C1] __sys_sendmsg+0xcd/0x170 [ 44.381529][ C1] do_syscall_64+0xc6/0x1e0 [ 44.381695][ C1] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.381892][ C1] } [ 44.381959][ C1] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 44.382306][ C1] ... acquired at: [ 44.382407][ C1] mark_lock+0x28d/0x3e0 [ 44.382540][ C1] mark_usage+0xd9/0x2a0 [ 44.382670][ C1] __lock_acquire+0x797/0x1570 [ 44.382882][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.383013][ C1] _raw_spin_lock+0x30/0x40 [ 44.383144][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.383376][ C1] call_timer_fn+0x13b/0x230 [ 44.383598][ C1] __run_timers+0x545/0x810 [ 44.383731][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.383865][ C1] __do_softirq+0x1f8/0x5df [ 44.383999][ C1] irq_exit_rcu+0x97/0xc0 [ 44.384210][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.384383][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.384546][ C1] default_idle+0xf/0x20 [ 44.384679][ C1] default_idle_call+0x6d/0xb0 [ 44.384885][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.385016][ C1] do_idle+0xf9/0x160 [ 44.385115][ C1] cpu_startup_entry+0x54/0x60 [ 44.385244][ C1] start_secondary+0x21c/0x2b0 [ 44.385386][ C1] common_startup_64+0x12c/0x138 [ 44.385598][ C1] [ 44.385663][ C1] [ 44.385663][ C1] stack backtrace: [ 44.385825][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.9.0-rc1-virtme #1 [ 44.386025][ C1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.386410][ C1] Call Trace: [ 44.386508][ C1] [ 44.386579][ C1] dump_stack_lvl+0x82/0xd0 [ 44.386795][ C1] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 44.386958][ C1] ? common_startup_64+0x12c/0x138 [ 44.387090][ C1] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 44.387263][ C1] ? __pfx_usage_skip+0x10/0x10 [ 44.387504][ C1] ? __pfx_usage_match+0x10/0x10 [ 44.387636][ C1] ? arch_stack_walk+0x8c/0xf0 [ 44.387767][ C1] mark_lock_irq+0x4cd/0xa10 [ 44.387899][ C1] ? __pfx_mark_lock_irq+0x10/0x10 [ 44.388108][ C1] ? stack_trace_save+0x94/0xd0 [ 44.388243][ C1] ? add_chain_cache+0x248/0x8b0 [ 44.388384][ C1] ? save_trace+0x8f/0x5b0 [ 44.388517][ C1] mark_lock+0x28d/0x3e0 [ 44.388616][ C1] mark_usage+0xd9/0x2a0 [ 44.388792][ C1] __lock_acquire+0x797/0x1570 [ 44.388924][ C1] ? __lock_acquire+0xaf0/0x1570 [ 44.389055][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.389301][ C1] lock_acquire.part.0+0xeb/0x330 [ 44.389509][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.389709][ C1] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.389841][ C1] ? trace_lock_acquire+0x135/0x1c0 [ 44.389971][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.390248][ C1] ? lock_acquire+0x32/0xc0 [ 44.390390][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.390594][ C1] _raw_spin_lock+0x30/0x40 [ 44.390726][ C1] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.391076][ C1] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 44.391275][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.391539][ C1] call_timer_fn+0x13b/0x230 [ 44.391745][ C1] ? call_timer_fn+0xe8/0x230 [ 44.391879][ C1] ? call_timer_fn+0xe8/0x230 [ 44.392014][ C1] ? __pfx_call_timer_fn+0x10/0x10 [ 44.392145][ C1] ? mark_lock+0x38/0x3e0 [ 44.392332][ C1] __run_timers+0x545/0x810 [ 44.392464][ C1] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 44.392694][ C1] ? __pfx___run_timers+0x10/0x10 [ 44.392825][ C1] ? do_raw_spin_lock+0x131/0x270 [ 44.393030][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 44.393160][ C1] ? lock_acquire+0x32/0xc0 [ 44.393300][ C1] ? run_timer_softirq+0xe0/0x1b0 [ 44.393433][ C1] run_timer_softirq+0xe8/0x1b0 [ 44.393640][ C1] __do_softirq+0x1f8/0x5df [ 44.393784][ C1] irq_exit_rcu+0x97/0xc0 [ 44.393885][ C1] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.394025][ C1] [ 44.394094][ C1] [ 44.394162][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.394429][ C1] RIP: 0010:default_idle+0xf/0x20 [ 44.394594][ 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 93 20 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 [ 44.395167][ C1] RSP: 0018:ffffc9000014fdf8 EFLAGS: 00000242 [ 44.395355][ C1] RAX: 00000000000740d5 RBX: 1ffff92000029fc1 RCX: ffffffff8f70f9e5 [ 44.395570][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8d0aa4a4 [ 44.395857][ C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1005f1709c [ 44.396052][ C1] R10: ffff88802f8b84e3 R11: ffff88802f8ad9b0 R12: 0000000000000000 [ 44.396259][ C1] R13: ffff888001b7a300 R14: dffffc0000000000 R15: 0000000000000000 [ 44.396584][ C1] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 44.396718][ C1] ? cpuidle_idle_call+0x1f4/0x280 [ 44.396855][ C1] default_idle_call+0x6d/0xb0 [ 44.397061][ C1] cpuidle_idle_call+0x1f4/0x280 [ 44.397202][ C1] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 44.397340][ C1] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 44.397473][ C1] do_idle+0xf9/0x160 [ 44.397573][ C1] cpu_startup_entry+0x54/0x60 [ 44.397780][ C1] start_secondary+0x21c/0x2b0 [ 44.397921][ C1] ? __pfx_start_secondary+0x10/0x10 [ 44.398056][ C1] common_startup_64+0x12c/0x138 [ 44.398195][ C1] [ 58.451299][ T354] GACT probability NOT on [ 89.471909][ T528] br1: port 1(veth0) entered blocking state [ 89.472123][ T528] br1: port 1(veth0) entered disabled state [ 89.472308][ T528] veth0: entered allmulticast mode [ 89.479755][ T528] veth0: entered promiscuous mode [ 89.485712][ T528] ip (528) used greatest stack depth: 23856 bytes left [ 89.567064][ T531] br1: port 1(veth0) entered blocking state [ 89.567290][ T531] br1: port 1(veth0) entered forwarding state [ 91.944282][ T536] veth0: left allmulticast mode [ 91.944545][ T536] veth0: left promiscuous mode [ 91.944928][ T536] br1: port 1(veth0) entered disabled state [ 104.371127][ T621] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 104.776659][ T627] br0: port 2(veth2) entered disabled state [ 104.873111][ T628] br0: port 1(veth1) entered disabled state [ 104.966792][ T629] veth2: left allmulticast mode [ 104.966957][ T629] veth2: left promiscuous mode [ 104.967205][ T629] br0: port 2(veth2) entered disabled state [ 104.968304][ T629] veth1: left allmulticast mode [ 104.968458][ T629] veth1: left promiscuous mode [ 104.968701][ T629] br0: port 1(veth1) entered disabled state