[ 28.286161][ T277] ip (277) used greatest stack depth: 24592 bytes left [ 30.188282][ T292] br1: port 1(veth1) entered blocking state [ 30.188789][ T292] br1: port 1(veth1) entered disabled state [ 30.189166][ T292] veth1: entered allmulticast mode [ 30.191440][ T292] veth1: entered promiscuous mode [ 30.206723][ T292] ip (292) used greatest stack depth: 24272 bytes left [ 30.343569][ T51] br1: port 1(veth1) entered blocking state [ 30.343903][ T51] br1: port 1(veth1) entered forwarding state [ 30.483558][ T295] br1: port 2(veth2) entered blocking state [ 30.484000][ T295] br1: port 2(veth2) entered disabled state [ 30.484434][ T295] veth2: entered allmulticast mode [ 30.487539][ T295] veth2: entered promiscuous mode [ 30.623963][ T51] br1: port 2(veth2) entered blocking state [ 30.624658][ T51] br1: port 2(veth2) entered forwarding state [ 38.777351][ T323] GACT probability NOT on [ 42.290347][ C0] tc action pedit unable to extract header offset for header type (0x5) [ 43.313589][ C2] tc action pedit unable to extract header offset for header type (0x5) [ 44.336665][ C2] tc action pedit unable to extract header offset for header type (0x5) [ 45.360547][ C2] [ 45.360673][ C2] ======================================================== [ 45.360920][ C2] WARNING: possible irq lock inversion dependency detected [ 45.361159][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 45.361337][ C2] -------------------------------------------------------- [ 45.361571][ C2] swapper/2/0 just changed the state of lock: [ 45.361763][ C2] ffff8880078fac38 (&br->lock){+.-.}-{2:2}, at: br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.362177][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 45.362423][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 45.362428][ C2] [ 45.362428][ C2] [ 45.362428][ C2] and interrupts could create inverse lock ordering between them. [ 45.362428][ C2] [ 45.363003][ C2] [ 45.363003][ C2] other info that might help us debug this: [ 45.363218][ C2] Chain exists of: [ 45.363218][ C2] &br->lock --> lweventlist_lock --> &p->alloc_lock [ 45.363218][ C2] [ 45.363553][ C2] Possible interrupt unsafe locking scenario: [ 45.363553][ C2] [ 45.363761][ C2] CPU0 CPU1 [ 45.363902][ C2] ---- ---- [ 45.364044][ C2] lock(&p->alloc_lock); [ 45.364160][ C2] local_irq_disable(); [ 45.364342][ C2] lock(&br->lock); [ 45.364534][ C2] lock(lweventlist_lock); [ 45.364720][ C2] [ 45.364826][ C2] lock(&br->lock); [ 45.364936][ C2] [ 45.364936][ C2] *** DEADLOCK *** [ 45.364936][ C2] [ 45.365158][ C2] 1 lock held by swapper/2/0: [ 45.365301][ C2] #0: ffffc90000230b68 ((&p->forward_delay_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 45.365604][ C2] [ 45.365604][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 45.365880][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.366046][ C2] HARDIRQ-ON-W at: [ 45.366165][ C2] __lock_acquire+0x797/0x1570 [ 45.366371][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.366557][ C2] _raw_spin_lock+0x30/0x40 [ 45.366738][ C2] set_mems_allowed+0x1d/0x210 [ 45.366925][ C2] kernel_init_freeable+0x72/0x310 [ 45.367116][ C2] kernel_init+0x20/0x200 [ 45.367299][ C2] ret_from_fork+0x31/0x70 [ 45.367478][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.367660][ C2] SOFTIRQ-ON-W at: [ 45.367768][ C2] __lock_acquire+0x797/0x1570 [ 45.367950][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.368140][ C2] _raw_spin_lock+0x30/0x40 [ 45.368335][ C2] set_mems_allowed+0x1d/0x210 [ 45.368537][ C2] kernel_init_freeable+0x72/0x310 [ 45.368716][ C2] kernel_init+0x20/0x200 [ 45.368893][ C2] ret_from_fork+0x31/0x70 [ 45.369090][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.369273][ C2] INITIAL USE at: [ 45.369379][ C2] __lock_acquire+0x797/0x1570 [ 45.369552][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.369735][ C2] _raw_spin_lock+0x30/0x40 [ 45.369915][ C2] set_mems_allowed+0x1d/0x210 [ 45.370111][ C2] kernel_init_freeable+0x72/0x310 [ 45.370297][ C2] kernel_init+0x20/0x200 [ 45.370478][ C2] ret_from_fork+0x31/0x70 [ 45.370661][ C2] ret_from_fork_asm+0x1a/0x30 [ 45.370837][ C2] } [ 45.370915][ C2] ... key at: [] __key.387+0x0/0x40 [ 45.371145][ C2] ... acquired at: [ 45.371255][ C2] __lock_acquire+0xaf0/0x1570 [ 45.371406][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.371555][ C2] _raw_spin_lock+0x30/0x40 [ 45.371706][ C2] __get_task_comm+0x27/0x70 [ 45.371857][ C2] ref_tracker_alloc+0x2ee/0x490 [ 45.372015][ C2] linkwatch_fire_event+0x196/0x200 [ 45.372167][ C2] veth_newlink+0x367/0x830 [veth] [ 45.372328][ C2] rtnl_newlink_create+0x341/0x850 [ 45.372481][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.372625][ C2] rtnl_newlink+0x63/0xa0 [ 45.372773][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.372920][ C2] netlink_rcv_skb+0x130/0x360 [ 45.373064][ C2] netlink_unicast+0x449/0x710 [ 45.373219][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.373360][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.373504][ C2] ___sys_sendmsg+0xee/0x170 [ 45.373651][ C2] __sys_sendmsg+0xcd/0x170 [ 45.373804][ C2] do_syscall_64+0xc6/0x1e0 [ 45.373947][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.374135][ C2] [ 45.374211][ C2] -> (lweventlist_lock){....}-{2:2} { [ 45.374358][ C2] INITIAL USE at: [ 45.374468][ C2] __lock_acquire+0x797/0x1570 [ 45.374653][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.374837][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.375016][ C2] linkwatch_sync_dev+0x29/0x1f0 [ 45.375206][ C2] rtnl_getlink+0x4c9/0x970 [ 45.375383][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.375564][ C2] netlink_rcv_skb+0x130/0x360 [ 45.375737][ C2] netlink_unicast+0x449/0x710 [ 45.375933][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.376114][ C2] __sys_sendto+0x37d/0x410 [ 45.376295][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.376475][ C2] do_syscall_64+0xc6/0x1e0 [ 45.376652][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.376869][ C2] } [ 45.376946][ C2] ... key at: [] lweventlist_lock+0x18/0x60 [ 45.377174][ C2] ... acquired at: [ 45.377285][ C2] __lock_acquire+0xaf0/0x1570 [ 45.377427][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.377568][ C2] _raw_spin_lock_irqsave+0x3f/0x60 [ 45.377713][ C2] linkwatch_fire_event+0x74/0x200 [ 45.377861][ C2] br_stp_change_bridge_id+0x25f/0x360 [bridge] [ 45.378088][ C2] br_set_mac_address+0x1f3/0x260 [bridge] [ 45.378308][ C2] dev_set_mac_address+0x28a/0x410 [ 45.378455][ C2] dev_set_mac_address_user+0x31/0x50 [ 45.378601][ C2] do_setlink+0x17b4/0x21e0 [ 45.378754][ C2] rtnl_setlink+0x1f7/0x310 [ 45.378901][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.379053][ C2] netlink_rcv_skb+0x130/0x360 [ 45.379212][ C2] netlink_unicast+0x449/0x710 [ 45.379361][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.379513][ C2] __sys_sendto+0x37d/0x410 [ 45.379660][ C2] __x64_sys_sendto+0xe0/0x1c0 [ 45.379813][ C2] do_syscall_64+0xc6/0x1e0 [ 45.379965][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.380150][ C2] [ 45.380221][ C2] -> (&br->lock){+.-.}-{2:2} { [ 45.380381][ C2] HARDIRQ-ON-W at: [ 45.380491][ C2] __lock_acquire+0x797/0x1570 [ 45.380679][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.380866][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.381054][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 45.381320][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.381578][ C2] br_changelink+0x36c/0x1360 [bridge] [ 45.381805][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 45.382019][ C2] rtnl_newlink_create+0x341/0x850 [ 45.382206][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.382391][ C2] rtnl_newlink+0x63/0xa0 [ 45.382660][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.382837][ C2] netlink_rcv_skb+0x130/0x360 [ 45.383023][ C2] netlink_unicast+0x449/0x710 [ 45.383295][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.383491][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.383674][ C2] ___sys_sendmsg+0xee/0x170 [ 45.383853][ C2] __sys_sendmsg+0xcd/0x170 [ 45.384033][ C2] do_syscall_64+0xc6/0x1e0 [ 45.384212][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.384430][ C2] IN-SOFTIRQ-W at: [ 45.384618][ C2] __lock_acquire+0x797/0x1570 [ 45.384809][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.384983][ C2] _raw_spin_lock+0x30/0x40 [ 45.385163][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.385493][ C2] call_timer_fn+0x13b/0x230 [ 45.385679][ C2] __run_timers+0x545/0x810 [ 45.385868][ C2] timer_expire_remote+0x9b/0xe0 [ 45.386168][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.386351][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.386531][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.386795][ C2] __do_softirq+0x1f8/0x5df [ 45.386985][ C2] irq_exit_rcu+0x97/0xc0 [ 45.387171][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.387392][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.387701][ C2] default_idle+0xf/0x20 [ 45.387889][ C2] default_idle_call+0x6d/0xb0 [ 45.388065][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.388339][ C2] do_idle+0xf9/0x160 [ 45.388483][ C2] cpu_startup_entry+0x54/0x60 [ 45.388662][ C2] start_secondary+0x21c/0x2b0 [ 45.388853][ C2] common_startup_64+0x12c/0x138 [ 45.389038][ C2] INITIAL USE at: [ 45.389152][ C2] __lock_acquire+0x797/0x1570 [ 45.389339][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.389614][ C2] _raw_spin_lock_bh+0x38/0x50 [ 45.389795][ C2] recalculate_group_addr+0x55/0x130 [bridge] [ 45.390070][ C2] br_vlan_filter_toggle+0x77/0x130 [bridge] [ 45.390399][ C2] br_changelink+0x36c/0x1360 [bridge] [ 45.390610][ C2] br_dev_newlink+0xa5/0x100 [bridge] [ 45.390828][ C2] rtnl_newlink_create+0x341/0x850 [ 45.391002][ C2] __rtnl_newlink+0xac9/0xd80 [ 45.391350][ C2] rtnl_newlink+0x63/0xa0 [ 45.391532][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.391712][ C2] netlink_rcv_skb+0x130/0x360 [ 45.391974][ C2] netlink_unicast+0x449/0x710 [ 45.392158][ C2] netlink_sendmsg+0x723/0xbe0 [ 45.392342][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 45.392602][ C2] ___sys_sendmsg+0xee/0x170 [ 45.392786][ C2] __sys_sendmsg+0xcd/0x170 [ 45.392974][ C2] do_syscall_64+0xc6/0x1e0 [ 45.393154][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.393469][ C2] } [ 45.393542][ C2] ... key at: [] __key.6+0x0/0xfffffffffffe5ac0 [bridge] [ 45.393830][ C2] ... acquired at: [ 45.393933][ C2] mark_lock+0x28d/0x3e0 [ 45.394079][ C2] mark_usage+0xd9/0x2a0 [ 45.394234][ C2] __lock_acquire+0x797/0x1570 [ 45.394380][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.394526][ C2] _raw_spin_lock+0x30/0x40 [ 45.394756][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.394972][ C2] call_timer_fn+0x13b/0x230 [ 45.395119][ C2] __run_timers+0x545/0x810 [ 45.395262][ C2] timer_expire_remote+0x9b/0xe0 [ 45.395493][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.395642][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.395780][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.396024][ C2] __do_softirq+0x1f8/0x5df [ 45.396273][ C2] irq_exit_rcu+0x97/0xc0 [ 45.396425][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.396606][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.396787][ C2] default_idle+0xf/0x20 [ 45.396932][ C2] default_idle_call+0x6d/0xb0 [ 45.397092][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.397241][ C2] do_idle+0xf9/0x160 [ 45.397350][ C2] cpu_startup_entry+0x54/0x60 [ 45.397577][ C2] start_secondary+0x21c/0x2b0 [ 45.397718][ C2] common_startup_64+0x12c/0x138 [ 45.397866][ C2] [ 45.397937][ C2] [ 45.397937][ C2] stack backtrace: [ 45.398114][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 45.398430][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.398783][ C2] Call Trace: [ 45.398902][ C2] [ 45.398983][ C2] dump_stack_lvl+0x82/0xd0 [ 45.399136][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 45.399329][ C2] ? common_startup_64+0x12c/0x138 [ 45.399478][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 45.399763][ C2] ? __pfx_usage_skip+0x10/0x10 [ 45.399907][ C2] ? __pfx_usage_match+0x10/0x10 [ 45.400057][ C2] ? arch_stack_walk+0x8c/0xf0 [ 45.400211][ C2] mark_lock_irq+0x4cd/0xa10 [ 45.400440][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 45.400588][ C2] ? stack_trace_save+0x94/0xd0 [ 45.400743][ C2] ? save_trace+0x8f/0x5b0 [ 45.400890][ C2] mark_lock+0x28d/0x3e0 [ 45.401007][ C2] mark_usage+0xd9/0x2a0 [ 45.401219][ C2] __lock_acquire+0x797/0x1570 [ 45.401374][ C2] ? trace_rcu_dyntick+0x112/0x180 [ 45.401530][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.401805][ C2] lock_acquire.part.0+0xeb/0x330 [ 45.402041][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.402275][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.402425][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 45.402579][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.402983][ C2] ? lock_acquire+0x32/0xc0 [ 45.403128][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.403353][ C2] _raw_spin_lock+0x30/0x40 [ 45.403601][ C2] ? br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.403826][ C2] br_forward_delay_timer_expired+0x48/0x440 [bridge] [ 45.404057][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.404310][ C2] call_timer_fn+0x13b/0x230 [ 45.404543][ C2] ? call_timer_fn+0xe8/0x230 [ 45.404685][ C2] ? call_timer_fn+0xe8/0x230 [ 45.404828][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 45.404971][ C2] ? mark_lock+0x38/0x3e0 [ 45.405161][ C2] __run_timers+0x545/0x810 [ 45.405306][ C2] ? __pfx_br_forward_delay_timer_expired+0x10/0x10 [bridge] [ 45.405563][ C2] ? __pfx___run_timers+0x10/0x10 [ 45.405705][ C2] ? __lock_release+0x103/0x460 [ 45.406136][ C2] ? do_raw_spin_lock+0x131/0x270 [ 45.406277][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.406415][ C2] ? lock_acquire+0x32/0xc0 [ 45.406555][ C2] ? timer_expire_remote+0x93/0xe0 [ 45.406786][ C2] timer_expire_remote+0x9b/0xe0 [ 45.406930][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 45.407080][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 45.407259][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.407487][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 45.407627][ C2] ? do_raw_spin_lock+0x131/0x270 [ 45.407765][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 45.407906][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 45.408146][ C2] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.408328][ C2] __do_softirq+0x1f8/0x5df [ 45.408475][ C2] irq_exit_rcu+0x97/0xc0 [ 45.408581][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.408726][ C2] [ 45.408810][ C2] [ 45.408888][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.409076][ C2] RIP: 0010:default_idle+0xf/0x20 [ 45.409230][ 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 [ 45.409839][ C2] RSP: 0000:ffffc9000015fdf8 EFLAGS: 00000242 [ 45.410029][ C2] RAX: 00000000000fe229 RBX: 1ffff9200002bfc1 RCX: ffffffffb230e9d5 [ 45.410340][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffafcaa4a4 [ 45.410552][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 45.410778][ C2] R10: ffff8880361384e3 R11: ffff88803613dc80 R12: 0000000000000000 [ 45.410997][ C2] R13: ffff888001b7c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 45.411214][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 45.411367][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 45.411598][ C2] default_idle_call+0x6d/0xb0 [ 45.411739][ C2] cpuidle_idle_call+0x1f4/0x280 [ 45.411885][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 45.412033][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 45.412283][ C2] do_idle+0xf9/0x160 [ 45.412391][ C2] cpu_startup_entry+0x54/0x60 [ 45.412534][ C2] start_secondary+0x21c/0x2b0 [ 45.412684][ C2] ? __pfx_start_secondary+0x10/0x10 [ 45.412827][ C2] common_startup_64+0x12c/0x138 [ 45.412970][ C2] [ 59.697387][ C2] tc action pedit unable to extract header offset for header type (0x4) [ 59.697946][ C2] tc action pedit unable to extract header offset for header type (0x4) [ 67.402106][ T684] br1: port 2(veth2) entered disabled state [ 67.500464][ T685] veth2: left allmulticast mode [ 67.500665][ T685] veth2: left promiscuous mode [ 67.500922][ T685] br1: port 2(veth2) entered disabled state [ 67.600320][ T686] br1: port 1(veth1) entered disabled state [ 67.703587][ T687] veth1: left allmulticast mode [ 67.703788][ T687] veth1: left promiscuous mode [ 67.704068][ T687] br1: port 1(veth1) entered disabled state