[ 31.313495][ T313] ip (313) used greatest stack depth: 23472 bytes left [ 41.252258][ C2] [ 41.252356][ C2] ======================================================== [ 41.252562][ C2] WARNING: possible irq lock inversion dependency detected [ 41.252757][ C2] 6.9.0-rc1-virtme #1 Not tainted [ 41.252891][ C2] -------------------------------------------------------- [ 41.253088][ C2] swapper/2/0 just changed the state of lock: [ 41.253257][ C2] ffff888007bf3d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 41.253501][ C2] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 41.253697][ C2] (&p->alloc_lock){+.+.}-{2:2} [ 41.253701][ C2] [ 41.253701][ C2] [ 41.253701][ C2] and interrupts could create inverse lock ordering between them. [ 41.253701][ C2] [ 41.254186][ C2] [ 41.254186][ C2] other info that might help us debug this: [ 41.254387][ C2] Possible interrupt unsafe locking scenario: [ 41.254387][ C2] [ 41.254585][ C2] CPU0 CPU1 [ 41.254719][ C2] ---- ---- [ 41.254851][ C2] lock(&p->alloc_lock); [ 41.254954][ C2] local_irq_disable(); [ 41.255131][ C2] lock(&ndev->lock); [ 41.255297][ C2] lock(&p->alloc_lock); [ 41.255463][ C2] [ 41.255562][ C2] lock(&ndev->lock); [ 41.255672][ C2] [ 41.255672][ C2] *** DEADLOCK *** [ 41.255672][ C2] [ 41.255866][ C2] 1 lock held by swapper/2/0: [ 41.256000][ C2] #0: ffffc90000230b68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 41.256244][ C2] [ 41.256244][ C2] the shortest dependencies between 2nd lock and 1st lock: [ 41.256472][ C2] -> (&p->alloc_lock){+.+.}-{2:2} { [ 41.256612][ C2] HARDIRQ-ON-W at: [ 41.256729][ C2] __lock_acquire+0x797/0x1570 [ 41.256904][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.257076][ C2] _raw_spin_lock+0x30/0x40 [ 41.257247][ C2] set_mems_allowed+0x1d/0x210 [ 41.257416][ C2] kernel_init_freeable+0x72/0x310 [ 41.257594][ C2] kernel_init+0x20/0x200 [ 41.257762][ C2] ret_from_fork+0x31/0x70 [ 41.257931][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.258098][ C2] SOFTIRQ-ON-W at: [ 41.258202][ C2] __lock_acquire+0x797/0x1570 [ 41.258375][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.258544][ C2] _raw_spin_lock+0x30/0x40 [ 41.258734][ C2] set_mems_allowed+0x1d/0x210 [ 41.258903][ C2] kernel_init_freeable+0x72/0x310 [ 41.259071][ C2] kernel_init+0x20/0x200 [ 41.259241][ C2] ret_from_fork+0x31/0x70 [ 41.259413][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.259582][ C2] INITIAL USE at: [ 41.259683][ C2] __lock_acquire+0x797/0x1570 [ 41.259852][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.260021][ C2] _raw_spin_lock+0x30/0x40 [ 41.260193][ C2] set_mems_allowed+0x1d/0x210 [ 41.260360][ C2] kernel_init_freeable+0x72/0x310 [ 41.260529][ C2] kernel_init+0x20/0x200 [ 41.260703][ C2] ret_from_fork+0x31/0x70 [ 41.260873][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.261043][ C2] } [ 41.261112][ C2] ... key at: [] __key.388+0x0/0x40 [ 41.261314][ C2] ... acquired at: [ 41.261416][ C2] __lock_acquire+0xaf0/0x1570 [ 41.261551][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.261692][ C2] _raw_spin_lock+0x30/0x40 [ 41.261826][ C2] __get_task_comm+0x27/0x70 [ 41.261963][ C2] ref_tracker_alloc+0x2ee/0x490 [ 41.262098][ C2] netdev_get_by_index+0x5e/0x80 [ 41.262234][ C2] fib6_nh_init+0x3d8/0x1580 [ 41.262374][ C2] ip6_route_info_create+0xf18/0x17d0 [ 41.262508][ C2] addrconf_f6i_alloc+0x265/0x560 [ 41.262642][ C2] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.262779][ C2] addrconf_join_anycast+0x1c0/0x220 [ 41.262913][ C2] __ipv6_ifa_notify+0x6b3/0xaf0 [ 41.263045][ C2] addrconf_dad_completed+0x12b/0xe20 [ 41.263178][ C2] addrconf_dad_begin+0x310/0x670 [ 41.263314][ C2] addrconf_dad_work+0x10b/0xab0 [ 41.263447][ C2] process_one_work+0xe2c/0x1730 [ 41.263581][ C2] worker_thread+0x587/0xd30 [ 41.263716][ C2] kthread+0x28a/0x350 [ 41.263817][ C2] ret_from_fork+0x31/0x70 [ 41.263951][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.264093][ C2] [ 41.264161][ C2] -> (&ndev->lock){++-.}-{2:2} { [ 41.264298][ C2] HARDIRQ-ON-W at: [ 41.264402][ C2] __lock_acquire+0x797/0x1570 [ 41.264572][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.264740][ C2] _raw_write_lock_bh+0x38/0x50 [ 41.264908][ C2] addrconf_permanent_addr+0x6e/0x670 [ 41.265078][ C2] addrconf_notify+0x749/0xd60 [ 41.265245][ C2] notifier_call_chain+0xcd/0x150 [ 41.265417][ C2] __dev_notify_flags+0xe6/0x250 [ 41.265586][ C2] dev_change_flags+0xec/0x160 [ 41.265756][ C2] do_setlink+0x7d6/0x21e0 [ 41.265925][ C2] __rtnl_newlink+0xaa7/0xd80 [ 41.266094][ C2] rtnl_newlink+0x63/0xa0 [ 41.266262][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.266430][ C2] netlink_rcv_skb+0x130/0x360 [ 41.266604][ C2] netlink_unicast+0x449/0x710 [ 41.266774][ C2] netlink_sendmsg+0x723/0xbe0 [ 41.266950][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 41.267118][ C2] ___sys_sendmsg+0xee/0x170 [ 41.267286][ C2] __sys_sendmsg+0xcd/0x170 [ 41.267454][ C2] do_syscall_64+0xc6/0x1e0 [ 41.267622][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.267827][ C2] HARDIRQ-ON-R at: [ 41.267927][ C2] __lock_acquire+0x797/0x1570 [ 41.268096][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.268263][ C2] _raw_read_lock_bh+0x44/0x80 [ 41.268428][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.268601][ C2] inet6_fill_link_af+0x5e/0xe0 [ 41.268773][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 41.268940][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.269107][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.269307][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 41.269475][ C2] register_netdevice+0x1177/0x1690 [ 41.269640][ C2] register_netdev+0x20/0x40 [ 41.269810][ C2] vti6_init_net+0x25d/0x380 [ 41.269978][ C2] ops_init+0x9b/0x560 [ 41.270112][ C2] register_pernet_operations+0x2db/0x710 [ 41.270317][ C2] register_pernet_device+0x2a/0x60 [ 41.270483][ C2] vti6_tunnel_init+0x18/0x110 [ 41.270653][ C2] do_one_initcall+0x8d/0x1e0 [ 41.270824][ C2] do_initcalls+0x1b2/0x3e0 [ 41.270994][ C2] kernel_init_freeable+0x232/0x310 [ 41.271163][ C2] kernel_init+0x20/0x200 [ 41.271329][ C2] ret_from_fork+0x31/0x70 [ 41.271498][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.271664][ C2] IN-SOFTIRQ-W at: [ 41.271764][ C2] __lock_acquire+0x797/0x1570 [ 41.271934][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.272106][ C2] _raw_write_lock+0x30/0x40 [ 41.272273][ C2] addrconf_rs_timer+0xa9/0x730 [ 41.272439][ C2] call_timer_fn+0x13b/0x230 [ 41.272609][ C2] __run_timers+0x545/0x810 [ 41.272777][ C2] timer_expire_remote+0x9b/0xe0 [ 41.272946][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 41.273118][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.273284][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 41.273451][ C2] __do_softirq+0x1f8/0x5df [ 41.273618][ C2] irq_exit_rcu+0x97/0xc0 [ 41.273789][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.273989][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.274192][ C2] default_idle+0xf/0x20 [ 41.274359][ C2] default_idle_call+0x6d/0xb0 [ 41.274527][ C2] cpuidle_idle_call+0x1f4/0x280 [ 41.274701][ C2] do_idle+0xf9/0x160 [ 41.274836][ C2] cpu_startup_entry+0x54/0x60 [ 41.275003][ C2] start_secondary+0x21c/0x2b0 [ 41.275173][ C2] common_startup_64+0x12c/0x138 [ 41.275340][ C2] INITIAL USE at: [ 41.275443][ C2] __lock_acquire+0x797/0x1570 [ 41.275611][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.275779][ C2] _raw_write_lock_bh+0x38/0x50 [ 41.275946][ C2] addrconf_permanent_addr+0x6e/0x670 [ 41.276114][ C2] addrconf_notify+0x749/0xd60 [ 41.276287][ C2] notifier_call_chain+0xcd/0x150 [ 41.276453][ C2] __dev_notify_flags+0xe6/0x250 [ 41.276621][ C2] dev_change_flags+0xec/0x160 [ 41.276788][ C2] do_setlink+0x7d6/0x21e0 [ 41.276953][ C2] __rtnl_newlink+0xaa7/0xd80 [ 41.277122][ C2] rtnl_newlink+0x63/0xa0 [ 41.277293][ C2] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.277459][ C2] netlink_rcv_skb+0x130/0x360 [ 41.277625][ C2] netlink_unicast+0x449/0x710 [ 41.277793][ C2] netlink_sendmsg+0x723/0xbe0 [ 41.277962][ C2] ____sys_sendmsg+0x7b2/0xa10 [ 41.278128][ C2] ___sys_sendmsg+0xee/0x170 [ 41.278296][ C2] __sys_sendmsg+0xcd/0x170 [ 41.278469][ C2] do_syscall_64+0xc6/0x1e0 [ 41.278642][ C2] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.278844][ C2] INITIAL READ USE at: [ 41.279024][ C2] __lock_acquire+0x797/0x1570 [ 41.279192][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.279359][ C2] _raw_read_lock_bh+0x44/0x80 [ 41.279609][ C2] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.279809][ C2] inet6_fill_link_af+0x5e/0xe0 [ 41.279975][ C2] rtnl_fill_ifinfo+0x1615/0x2a90 [ 41.280141][ C2] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.280427][ C2] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.280625][ C2] rtmsg_ifinfo+0x5b/0xa0 [ 41.280801][ C2] register_netdevice+0x1177/0x1690 [ 41.280999][ C2] register_netdev+0x20/0x40 [ 41.281166][ C2] vti6_init_net+0x25d/0x380 [ 41.281332][ C2] ops_init+0x9b/0x560 [ 41.281581][ C2] register_pernet_operations+0x2db/0x710 [ 41.281779][ C2] register_pernet_device+0x2a/0x60 [ 41.281981][ C2] vti6_tunnel_init+0x18/0x110 [ 41.282227][ C2] do_one_initcall+0x8d/0x1e0 [ 41.282401][ C2] do_initcalls+0x1b2/0x3e0 [ 41.282571][ C2] kernel_init_freeable+0x232/0x310 [ 41.282850][ C2] kernel_init+0x20/0x200 [ 41.283016][ C2] ret_from_fork+0x31/0x70 [ 41.283187][ C2] ret_from_fork_asm+0x1a/0x30 [ 41.283434][ C2] } [ 41.283504][ C2] ... key at: [] __key.37+0x0/0x40 [ 41.283702][ C2] ... acquired at: [ 41.283800][ C2] mark_lock+0x28d/0x3e0 [ 41.283934][ C2] mark_usage+0xd9/0x2a0 [ 41.284144][ C2] __lock_acquire+0x797/0x1570 [ 41.284277][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.284415][ C2] _raw_write_lock+0x30/0x40 [ 41.284547][ C2] addrconf_rs_timer+0xa9/0x730 [ 41.284833][ C2] call_timer_fn+0x13b/0x230 [ 41.284967][ C2] __run_timers+0x545/0x810 [ 41.285099][ C2] timer_expire_remote+0x9b/0xe0 [ 41.285232][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 41.285442][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.285577][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 41.285712][ C2] __do_softirq+0x1f8/0x5df [ 41.285844][ C2] irq_exit_rcu+0x97/0xc0 [ 41.285977][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.286219][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.286384][ C2] default_idle+0xf/0x20 [ 41.286516][ C2] default_idle_call+0x6d/0xb0 [ 41.286725][ C2] cpuidle_idle_call+0x1f4/0x280 [ 41.286858][ C2] do_idle+0xf9/0x160 [ 41.286962][ C2] cpu_startup_entry+0x54/0x60 [ 41.287096][ C2] start_secondary+0x21c/0x2b0 [ 41.287228][ C2] common_startup_64+0x12c/0x138 [ 41.287440][ C2] [ 41.287506][ C2] [ 41.287506][ C2] stack backtrace: [ 41.287669][ C2] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.9.0-rc1-virtme #1 [ 41.287873][ C2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.288245][ C2] Call Trace: [ 41.288350][ C2] [ 41.288420][ C2] dump_stack_lvl+0x82/0xd0 [ 41.288557][ C2] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 41.288804][ C2] ? kernel_text_address+0x17/0xe0 [ 41.288939][ C2] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 41.289103][ C2] ? __pfx_usage_skip+0x10/0x10 [ 41.289315][ C2] ? __pfx_usage_match+0x10/0x10 [ 41.289450][ C2] ? arch_stack_walk+0x8c/0xf0 [ 41.289584][ C2] mark_lock_irq+0x4cd/0xa10 [ 41.289717][ C2] ? common_startup_64+0x12c/0x138 [ 41.289850][ C2] ? __pfx_mark_lock_irq+0x10/0x10 [ 41.290061][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 41.290198][ C2] ? save_trace+0x8f/0x5b0 [ 41.290331][ C2] mark_lock+0x28d/0x3e0 [ 41.290431][ C2] ? __pfx_stack_trace_save+0x10/0x10 [ 41.290644][ C2] mark_usage+0xd9/0x2a0 [ 41.290746][ C2] __lock_acquire+0x797/0x1570 [ 41.290880][ C2] ? __pfx_validate_chain+0x10/0x10 [ 41.291014][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 41.291148][ C2] lock_acquire.part.0+0xeb/0x330 [ 41.291364][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 41.291496][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.291630][ C2] ? trace_lock_acquire+0x135/0x1c0 [ 41.291765][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 41.291895][ C2] ? lock_acquire+0x32/0xc0 [ 41.292030][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 41.292162][ C2] _raw_write_lock+0x30/0x40 [ 41.292293][ C2] ? addrconf_rs_timer+0xa9/0x730 [ 41.292501][ C2] addrconf_rs_timer+0xa9/0x730 [ 41.292633][ C2] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.292766][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 41.292900][ C2] ? call_timer_fn+0xe8/0x230 [ 41.293112][ C2] ? lock_acquire+0x32/0xc0 [ 41.293243][ C2] ? call_timer_fn+0xe8/0x230 [ 41.293375][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 41.293506][ C2] call_timer_fn+0x13b/0x230 [ 41.293638][ C2] ? call_timer_fn+0xe8/0x230 [ 41.293845][ C2] ? call_timer_fn+0xe8/0x230 [ 41.293980][ C2] ? __pfx_call_timer_fn+0x10/0x10 [ 41.294112][ C2] ? mark_lock+0x38/0x3e0 [ 41.294218][ C2] __run_timers+0x545/0x810 [ 41.294428][ C2] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 41.294561][ C2] ? __pfx___run_timers+0x10/0x10 [ 41.294695][ C2] ? __lock_release+0x103/0x460 [ 41.294834][ C2] ? do_raw_spin_lock+0x131/0x270 [ 41.295120][ C2] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 41.295252][ C2] ? lock_acquire+0x32/0xc0 [ 41.295384][ C2] ? timer_expire_remote+0x93/0xe0 [ 41.295521][ C2] timer_expire_remote+0x9b/0xe0 [ 41.295654][ C2] tmigr_handle_remote_cpu+0x270/0x430 [ 41.295863][ C2] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 41.296031][ C2] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.296165][ C2] tmigr_handle_remote+0x21d/0x3a0 [ 41.296297][ C2] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 41.296507][ C2] __do_softirq+0x1f8/0x5df [ 41.296641][ C2] irq_exit_rcu+0x97/0xc0 [ 41.296746][ C2] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.296881][ C2] [ 41.296950][ C2] [ 41.297094][ C2] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.297257][ C2] RIP: 0010:default_idle+0xf/0x20 [ 41.297394][ 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 d3 eb 32 00 fb f4 c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 41.297947][ C2] RSP: 0018:ffffc9000015fdf8 EFLAGS: 00000246 [ 41.298117][ C2] RAX: 0000000000137b8b RBX: 1ffff9200002bfc1 RCX: ffffffff8c732ea5 [ 41.298395][ C2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff89eac1d4 [ 41.298596][ C2] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c2709c [ 41.298796][ C2] R10: ffff8880361384e3 R11: ffff88803613de40 R12: 0000000000000000 [ 41.299075][ C2] R13: ffff888001b8c5c0 R14: dffffc0000000000 R15: 0000000000000000 [ 41.299273][ C2] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 41.299405][ C2] ? cpuidle_idle_call+0x1f4/0x280 [ 41.299538][ C2] default_idle_call+0x6d/0xb0 [ 41.299749][ C2] cpuidle_idle_call+0x1f4/0x280 [ 41.299881][ C2] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 41.300012][ C2] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 41.300149][ C2] do_idle+0xf9/0x160 [ 41.300331][ C2] cpu_startup_entry+0x54/0x60 [ 41.300465][ C2] start_secondary+0x21c/0x2b0 [ 41.300597][ C2] ? __pfx_start_secondary+0x10/0x10 [ 41.300732][ C2] common_startup_64+0x12c/0x138 [ 41.300867][ C2]