[ 34.615930][ C0] [ 34.616120][ C0] ======================================================== [ 34.616401][ C0] WARNING: possible irq lock inversion dependency detected [ 34.616665][ C0] 6.9.0-rc1-virtme #1 Not tainted [ 34.616843][ C0] -------------------------------------------------------- [ 34.617113][ C0] swapper/0/0 just changed the state of lock: [ 34.617338][ C0] ffff888005443d80 (&ndev->lock){++-.}-{2:2}, at: addrconf_rs_timer+0xa9/0x730 [ 34.617660][ C0] but this lock took another, SOFTIRQ-unsafe lock in the past: [ 34.617932][ C0] (&p->alloc_lock){+.+.}-{2:2} [ 34.617936][ C0] [ 34.617936][ C0] [ 34.617936][ C0] and interrupts could create inverse lock ordering between them. [ 34.617936][ C0] [ 34.618606][ C0] [ 34.618606][ C0] other info that might help us debug this: [ 34.618868][ C0] Possible interrupt unsafe locking scenario: [ 34.618868][ C0] [ 34.619131][ C0] CPU0 CPU1 [ 34.619308][ C0] ---- ---- [ 34.619489][ C0] lock(&p->alloc_lock); [ 34.619627][ C0] local_irq_disable(); [ 34.619848][ C0] lock(&ndev->lock); [ 34.620071][ C0] lock(&p->alloc_lock); [ 34.620294][ C0] [ 34.620427][ C0] lock(&ndev->lock); [ 34.620565][ C0] [ 34.620565][ C0] *** DEADLOCK *** [ 34.620565][ C0] [ 34.620827][ C0] 1 lock held by swapper/0/0: [ 34.621006][ C0] #0: ffffc90000007b68 ((&ndev->rs_timer)){+.-.}-{0:0}, at: call_timer_fn+0xe8/0x230 [ 34.621329][ C0] [ 34.621329][ C0] the shortest dependencies between 2nd lock and 1st lock: [ 34.621637][ C0] -> (&p->alloc_lock){+.+.}-{2:2} { [ 34.621829][ C0] HARDIRQ-ON-W at: [ 34.621965][ C0] __lock_acquire+0x797/0x1570 [ 34.622195][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.622418][ C0] _raw_spin_lock+0x30/0x40 [ 34.622644][ C0] set_mems_allowed+0x1d/0x210 [ 34.622868][ C0] kernel_init_freeable+0x72/0x310 [ 34.623093][ C0] kernel_init+0x20/0x200 [ 34.623321][ C0] ret_from_fork+0x31/0x70 [ 34.623550][ C0] ret_from_fork_asm+0x1a/0x30 [ 34.623781][ C0] SOFTIRQ-ON-W at: [ 34.623916][ C0] __lock_acquire+0x797/0x1570 [ 34.624140][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.624363][ C0] _raw_spin_lock+0x30/0x40 [ 34.624590][ C0] set_mems_allowed+0x1d/0x210 [ 34.624812][ C0] kernel_init_freeable+0x72/0x310 [ 34.625034][ C0] kernel_init+0x20/0x200 [ 34.625255][ C0] ret_from_fork+0x31/0x70 [ 34.625480][ C0] ret_from_fork_asm+0x1a/0x30 [ 34.625701][ C0] INITIAL USE at: [ 34.625836][ C0] __lock_acquire+0x797/0x1570 [ 34.626062][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.626285][ C0] _raw_spin_lock+0x30/0x40 [ 34.626507][ C0] set_mems_allowed+0x1d/0x210 [ 34.626729][ C0] kernel_init_freeable+0x72/0x310 [ 34.626952][ C0] kernel_init+0x20/0x200 [ 34.627174][ C0] ret_from_fork+0x31/0x70 [ 34.627399][ C0] ret_from_fork_asm+0x1a/0x30 [ 34.627622][ C0] } [ 34.627713][ C0] ... key at: [] __key.387+0x0/0x40 [ 34.627982][ C0] ... acquired at: [ 34.628115][ C0] __lock_acquire+0xaf0/0x1570 [ 34.628294][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.628473][ C0] _raw_spin_lock+0x30/0x40 [ 34.628722][ C0] __get_task_comm+0x27/0x70 [ 34.628902][ C0] ref_tracker_alloc+0x2ee/0x490 [ 34.629081][ C0] netdev_get_by_index+0x5e/0x80 [ 34.629259][ C0] fib6_nh_init+0x3d8/0x15b0 [ 34.629442][ C0] ip6_route_info_create+0xf18/0x17d0 [ 34.629620][ C0] addrconf_f6i_alloc+0x265/0x560 [ 34.629798][ C0] __ipv6_dev_ac_inc+0x25f/0xb10 [ 34.629980][ C0] addrconf_join_anycast+0x1c0/0x220 [ 34.630163][ C0] dev_forward_change+0x2a6/0x7b0 [ 34.630341][ C0] addrconf_fixup_forwarding+0x23f/0x460 [ 34.630563][ C0] addrconf_sysctl_forward+0x212/0x2b0 [ 34.630744][ C0] proc_sys_call_handler+0x403/0x5e0 [ 34.630923][ C0] vfs_write+0x9e5/0x10a0 [ 34.631101][ C0] ksys_write+0xf5/0x1e0 [ 34.631278][ C0] do_syscall_64+0xc6/0x1e0 [ 34.631456][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.631686][ C0] [ 34.631777][ C0] -> (&ndev->lock){++-.}-{2:2} { [ 34.631962][ C0] HARDIRQ-ON-W at: [ 34.632097][ C0] __lock_acquire+0x797/0x1570 [ 34.632333][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.632555][ C0] _raw_write_lock_bh+0x38/0x50 [ 34.632778][ C0] addrconf_permanent_addr+0x6e/0x670 [ 34.633006][ C0] addrconf_notify+0x749/0xd60 [ 34.633230][ C0] notifier_call_chain+0xcd/0x150 [ 34.633454][ C0] __dev_notify_flags+0xe6/0x250 [ 34.633676][ C0] dev_change_flags+0xec/0x160 [ 34.633899][ C0] do_setlink+0x7d6/0x21e0 [ 34.634121][ C0] __rtnl_newlink+0xaa7/0xd80 [ 34.634348][ C0] rtnl_newlink+0x63/0xa0 [ 34.634573][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.634794][ C0] netlink_rcv_skb+0x130/0x360 [ 34.635019][ C0] netlink_unicast+0x449/0x710 [ 34.635239][ C0] netlink_sendmsg+0x723/0xbe0 [ 34.635461][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 34.635684][ C0] ___sys_sendmsg+0xee/0x170 [ 34.635911][ C0] __sys_sendmsg+0xcd/0x170 [ 34.636136][ C0] do_syscall_64+0xc6/0x1e0 [ 34.636359][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.636625][ C0] HARDIRQ-ON-R at: [ 34.636759][ C0] __lock_acquire+0x797/0x1570 [ 34.636985][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.637210][ C0] _raw_read_lock_bh+0x44/0x80 [ 34.637439][ C0] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.637662][ C0] inet6_fill_link_af+0x5e/0xe0 [ 34.637884][ C0] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.638105][ C0] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.638327][ C0] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.638603][ C0] rtmsg_ifinfo+0x5b/0xa0 [ 34.638830][ C0] register_netdevice+0x1177/0x1690 [ 34.639052][ C0] register_netdev+0x20/0x40 [ 34.639277][ C0] sit_init_net+0x250/0x4f0 [ 34.639501][ C0] ops_init+0x9b/0x560 [ 34.639679][ C0] register_pernet_operations+0x2db/0x710 [ 34.639948][ C0] register_pernet_device+0x2a/0x60 [ 34.640176][ C0] sit_init+0x23/0xe0 [ 34.640355][ C0] do_one_initcall+0x8d/0x1e0 [ 34.640580][ C0] do_initcalls+0x1b2/0x3e0 [ 34.640803][ C0] kernel_init_freeable+0x232/0x310 [ 34.641023][ C0] kernel_init+0x20/0x200 [ 34.641246][ C0] ret_from_fork+0x31/0x70 [ 34.641473][ C0] ret_from_fork_asm+0x1a/0x30 [ 34.641701][ C0] IN-SOFTIRQ-W at: [ 34.641835][ C0] __lock_acquire+0x797/0x1570 [ 34.642058][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.642282][ C0] _raw_write_lock+0x30/0x40 [ 34.642505][ C0] addrconf_rs_timer+0xa9/0x730 [ 34.642727][ C0] call_timer_fn+0x13b/0x230 [ 34.642954][ C0] __run_timers+0x545/0x810 [ 34.643175][ C0] timer_expire_remote+0x9b/0xe0 [ 34.643398][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 34.643622][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.643843][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 34.644064][ C0] __do_softirq+0x1f8/0x5df [ 34.644291][ C0] irq_exit_rcu+0x97/0xc0 [ 34.644518][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.644785][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.645054][ C0] default_idle+0xf/0x20 [ 34.645278][ C0] default_idle_call+0x6d/0xb0 [ 34.645499][ C0] cpuidle_idle_call+0x1f4/0x280 [ 34.645721][ C0] do_idle+0xf9/0x160 [ 34.645904][ C0] cpu_startup_entry+0x54/0x60 [ 34.646127][ C0] rest_init+0x14f/0x260 [ 34.646349][ C0] start_kernel+0x318/0x3d0 [ 34.646572][ C0] x86_64_start_reservations+0x18/0x30 [ 34.646796][ C0] x86_64_start_kernel+0xba/0x110 [ 34.647017][ C0] common_startup_64+0x12c/0x138 [ 34.647242][ C0] INITIAL USE at: [ 34.647376][ C0] __lock_acquire+0x797/0x1570 [ 34.647598][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.647820][ C0] _raw_write_lock_bh+0x38/0x50 [ 34.648044][ C0] addrconf_permanent_addr+0x6e/0x670 [ 34.648271][ C0] addrconf_notify+0x749/0xd60 [ 34.648502][ C0] notifier_call_chain+0xcd/0x150 [ 34.648733][ C0] __dev_notify_flags+0xe6/0x250 [ 34.648955][ C0] dev_change_flags+0xec/0x160 [ 34.649179][ C0] do_setlink+0x7d6/0x21e0 [ 34.649404][ C0] __rtnl_newlink+0xaa7/0xd80 [ 34.649629][ C0] rtnl_newlink+0x63/0xa0 [ 34.649851][ C0] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.650078][ C0] netlink_rcv_skb+0x130/0x360 [ 34.650301][ C0] netlink_unicast+0x449/0x710 [ 34.650522][ C0] netlink_sendmsg+0x723/0xbe0 [ 34.650744][ C0] ____sys_sendmsg+0x7b2/0xa10 [ 34.650967][ C0] ___sys_sendmsg+0xee/0x170 [ 34.651189][ C0] __sys_sendmsg+0xcd/0x170 [ 34.651412][ C0] do_syscall_64+0xc6/0x1e0 [ 34.651638][ C0] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.651905][ C0] INITIAL READ USE at: [ 34.652039][ C0] __lock_acquire+0x797/0x1570 [ 34.652263][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.652485][ C0] _raw_read_lock_bh+0x44/0x80 [ 34.652707][ C0] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.652976][ C0] inet6_fill_link_af+0x5e/0xe0 [ 34.653197][ C0] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.653419][ C0] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.653683][ C0] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.653949][ C0] rtmsg_ifinfo+0x5b/0xa0 [ 34.654171][ C0] register_netdevice+0x1177/0x1690 [ 34.654443][ C0] register_netdev+0x20/0x40 [ 34.654664][ C0] sit_init_net+0x250/0x4f0 [ 34.654887][ C0] ops_init+0x9b/0x560 [ 34.655111][ C0] register_pernet_operations+0x2db/0x710 [ 34.655377][ C0] register_pernet_device+0x2a/0x60 [ 34.655643][ C0] sit_init+0x23/0xe0 [ 34.655870][ C0] do_one_initcall+0x8d/0x1e0 [ 34.656094][ C0] do_initcalls+0x1b2/0x3e0 [ 34.656316][ C0] kernel_init_freeable+0x232/0x310 [ 34.656582][ C0] kernel_init+0x20/0x200 [ 34.656806][ C0] ret_from_fork+0x31/0x70 [ 34.657031][ C0] ret_from_fork_asm+0x1a/0x30 [ 34.657258][ C0] } [ 34.657348][ C0] ... key at: [] __key.37+0x0/0x40 [ 34.657616][ C0] ... acquired at: [ 34.657748][ C0] mark_lock+0x28d/0x3e0 [ 34.657927][ C0] mark_usage+0xd9/0x2a0 [ 34.658106][ C0] __lock_acquire+0x797/0x1570 [ 34.658286][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.658464][ C0] _raw_write_lock+0x30/0x40 [ 34.658655][ C0] addrconf_rs_timer+0xa9/0x730 [ 34.658833][ C0] call_timer_fn+0x13b/0x230 [ 34.659014][ C0] __run_timers+0x545/0x810 [ 34.659193][ C0] timer_expire_remote+0x9b/0xe0 [ 34.659372][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 34.659550][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.659729][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 34.659906][ C0] __do_softirq+0x1f8/0x5df [ 34.660088][ C0] irq_exit_rcu+0x97/0xc0 [ 34.660267][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.660490][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.660712][ C0] default_idle+0xf/0x20 [ 34.660889][ C0] default_idle_call+0x6d/0xb0 [ 34.661067][ C0] cpuidle_idle_call+0x1f4/0x280 [ 34.661246][ C0] do_idle+0xf9/0x160 [ 34.661381][ C0] cpu_startup_entry+0x54/0x60 [ 34.661563][ C0] rest_init+0x14f/0x260 [ 34.661740][ C0] start_kernel+0x318/0x3d0 [ 34.661916][ C0] x86_64_start_reservations+0x18/0x30 [ 34.662095][ C0] x86_64_start_kernel+0xba/0x110 [ 34.662271][ C0] common_startup_64+0x12c/0x138 [ 34.662450][ C0] [ 34.662540][ C0] [ 34.662540][ C0] stack backtrace: [ 34.662761][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0-rc1-virtme #1 [ 34.663034][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.663427][ C0] Call Trace: [ 34.663562][ C0] [ 34.663655][ C0] dump_stack_lvl+0x82/0xd0 [ 34.663836][ C0] print_irq_inversion_bug.part.0+0x3d9/0x570 [ 34.664058][ C0] ? kernel_text_address+0x17/0xe0 [ 34.664240][ C0] ? __pfx_print_irq_inversion_bug.part.0+0x10/0x10 [ 34.664463][ C0] ? __pfx_usage_skip+0x10/0x10 [ 34.664639][ C0] ? __pfx_usage_match+0x10/0x10 [ 34.664815][ C0] ? arch_stack_walk+0x8c/0xf0 [ 34.664995][ C0] mark_lock_irq+0x4cd/0xa10 [ 34.665172][ C0] ? common_startup_64+0x12c/0x138 [ 34.665351][ C0] ? __pfx_mark_lock_irq+0x10/0x10 [ 34.665529][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 34.665710][ C0] ? save_trace+0x8f/0x5b0 [ 34.665896][ C0] mark_lock+0x28d/0x3e0 [ 34.666032][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 34.666210][ C0] mark_usage+0xd9/0x2a0 [ 34.666345][ C0] __lock_acquire+0x797/0x1570 [ 34.666528][ C0] ? __pfx_validate_chain+0x10/0x10 [ 34.666706][ C0] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.666881][ C0] lock_acquire.part.0+0xeb/0x330 [ 34.667060][ C0] ? addrconf_rs_timer+0xa9/0x730 [ 34.667245][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.667427][ C0] ? trace_lock_acquire+0x135/0x1c0 [ 34.667605][ C0] ? addrconf_rs_timer+0xa9/0x730 [ 34.667783][ C0] ? lock_acquire+0x32/0xc0 [ 34.667963][ C0] ? addrconf_rs_timer+0xa9/0x730 [ 34.668144][ C0] _raw_write_lock+0x30/0x40 [ 34.668324][ C0] ? addrconf_rs_timer+0xa9/0x730 [ 34.668515][ C0] addrconf_rs_timer+0xa9/0x730 [ 34.668696][ C0] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.668882][ C0] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.669060][ C0] ? call_timer_fn+0xe8/0x230 [ 34.669238][ C0] ? lock_acquire+0x32/0xc0 [ 34.669416][ C0] ? call_timer_fn+0xe8/0x230 [ 34.669598][ C0] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.669773][ C0] call_timer_fn+0x13b/0x230 [ 34.669952][ C0] ? call_timer_fn+0xe8/0x230 [ 34.670129][ C0] ? call_timer_fn+0xe8/0x230 [ 34.670310][ C0] ? __pfx_call_timer_fn+0x10/0x10 [ 34.670491][ C0] ? mark_lock+0x38/0x3e0 [ 34.670630][ C0] __run_timers+0x545/0x810 [ 34.670808][ C0] ? __pfx_addrconf_rs_timer+0x10/0x10 [ 34.670986][ C0] ? __pfx___run_timers+0x10/0x10 [ 34.671163][ C0] ? __lock_release+0x103/0x460 [ 34.671341][ C0] ? do_raw_spin_lock+0x131/0x270 [ 34.671519][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 34.671697][ C0] ? lock_acquire+0x32/0xc0 [ 34.671881][ C0] ? timer_expire_remote+0x93/0xe0 [ 34.672061][ C0] timer_expire_remote+0x9b/0xe0 [ 34.672243][ C0] tmigr_handle_remote_cpu+0x270/0x430 [ 34.672421][ C0] ? __pfx_tmigr_handle_remote_cpu+0x10/0x10 [ 34.672646][ C0] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.672825][ C0] tmigr_handle_remote+0x21d/0x3a0 [ 34.673001][ C0] ? do_raw_spin_lock+0x131/0x270 [ 34.673183][ C0] ? __pfx_tmigr_handle_remote+0x10/0x10 [ 34.673360][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 34.673538][ C0] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 34.673759][ C0] __do_softirq+0x1f8/0x5df [ 34.673938][ C0] irq_exit_rcu+0x97/0xc0 [ 34.674072][ C0] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.674250][ C0] [ 34.674341][ C0] [ 34.674436][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.674661][ C0] RIP: 0010:default_idle+0xf/0x20 [ 34.674849][ C0] 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 [ 34.675474][ C0] RSP: 0018:ffffffff92207e00 EFLAGS: 00000242 [ 34.675701][ C0] RAX: 00000000000988df RBX: 1ffffffff2440fc2 RCX: ffffffff9130f9e5 [ 34.675993][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8ecaa4a4 [ 34.676222][ C0] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c0709c [ 34.676447][ C0] R10: ffff8880360384e3 R11: ffff88803602d9b0 R12: 0000000000000000 [ 34.676669][ C0] R13: ffffffff9221d000 R14: dffffc0000000000 R15: 0000000000014770 [ 34.676897][ C0] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 34.677053][ C0] ? cpuidle_idle_call+0x1f4/0x280 [ 34.677202][ C0] default_idle_call+0x6d/0xb0 [ 34.677353][ C0] cpuidle_idle_call+0x1f4/0x280 [ 34.677500][ C0] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 34.677649][ C0] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 34.677799][ C0] do_idle+0xf9/0x160 [ 34.677912][ C0] cpu_startup_entry+0x54/0x60 [ 34.678060][ C0] rest_init+0x14f/0x260 [ 34.678179][ C0] start_kernel+0x318/0x3d0 [ 34.678329][ C0] x86_64_start_reservations+0x18/0x30 [ 34.678483][ C0] x86_64_start_kernel+0xba/0x110 [ 34.678709][ C0] common_startup_64+0x12c/0x138 [ 34.678861][ C0] [ 49.698023][ T374] Initializing XFRM netlink socket