[ 30.830447][ T308] gre: GRE over IPv4 demultiplexor driver [ 30.875548][ T308] ip6_gre: GRE over IPv6 tunneling driver [ 32.895024][ T329] 8021q: 802.1Q VLAN Support v1.8 [ 36.743773][ T367] GACT probability NOT on [ 40.306141][ T400] [ 40.306248][ T400] ===================================================== [ 40.306440][ T400] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.306648][ T400] 6.9.0-rc1-virtme #1 Not tainted [ 40.306784][ T400] ----------------------------------------------------- [ 40.306963][ T400] sysctl/400 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.307165][ T400] ffff888006384ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.307412][ T400] [ 40.307412][ T400] and this task is already holding: [ 40.307635][ T400] ffff8880062c0d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.307892][ T400] which would create a new lock dependency: [ 40.308070][ T400] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.308286][ T400] [ 40.308286][ T400] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.308537][ T400] (&ndev->lock){++--}-{2:2} [ 40.308541][ T400] [ 40.308541][ T400] ... which became SOFTIRQ-irq-safe at: [ 40.308875][ T400] __lock_acquire+0x797/0x1570 [ 40.309022][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.309165][ T400] _raw_write_lock+0x30/0x40 [ 40.309307][ T400] addrconf_rs_timer+0xa9/0x730 [ 40.309443][ T400] call_timer_fn+0x13b/0x230 [ 40.309586][ T400] __run_timers+0x545/0x810 [ 40.309725][ T400] run_timer_softirq+0xe8/0x1b0 [ 40.309880][ T400] __do_softirq+0x1f8/0x5df [ 40.310023][ T400] irq_exit_rcu+0x97/0xc0 [ 40.310164][ T400] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.310303][ T400] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.310483][ T400] stack_depot_save_flags+0x8e/0x530 [ 40.310626][ T400] set_track_prepare+0x8a/0xd0 [ 40.310763][ T400] __alloc_object+0x2bf/0x6f0 [ 40.310903][ T400] __create_object+0x22/0xb0 [ 40.311039][ T400] kmem_cache_alloc+0x208/0x270 [ 40.311176][ T400] vm_area_alloc+0x20/0x1b0 [ 40.311316][ T400] do_brk_flags+0x213/0x1f10 [ 40.311455][ T400] vm_brk_flags+0x2cd/0x500 [ 40.311591][ T400] elf_load+0x255/0x700 [ 40.311706][ T400] load_elf_binary+0xa36/0x2840 [ 40.311843][ T400] search_binary_handler+0x152/0x550 [ 40.311981][ T400] exec_binprm+0x120/0x400 [ 40.312119][ T400] bprm_execve+0xe9/0x4f0 [ 40.312254][ T400] do_execveat_common.isra.0+0x4a6/0x6a0 [ 40.312390][ T400] __x64_sys_execve+0x8c/0xb0 [ 40.312531][ T400] do_syscall_64+0xc6/0x1e0 [ 40.312667][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.312837][ T400] [ 40.312837][ T400] to a SOFTIRQ-irq-unsafe lock: [ 40.313004][ T400] (&p->alloc_lock){+.+.}-{2:2} [ 40.313009][ T400] [ 40.313009][ T400] ... which became SOFTIRQ-irq-unsafe at: [ 40.313336][ T400] ... [ 40.313337][ T400] __lock_acquire+0x797/0x1570 [ 40.313547][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.313699][ T400] _raw_spin_lock+0x30/0x40 [ 40.313837][ T400] set_mems_allowed+0x1d/0x210 [ 40.313975][ T400] kernel_init_freeable+0x72/0x310 [ 40.314115][ T400] kernel_init+0x20/0x200 [ 40.314250][ T400] ret_from_fork+0x31/0x70 [ 40.314388][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.314527][ T400] [ 40.314527][ T400] other info that might help us debug this: [ 40.314527][ T400] [ 40.314794][ T400] Possible interrupt unsafe locking scenario: [ 40.314794][ T400] [ 40.315004][ T400] CPU0 CPU1 [ 40.315140][ T400] ---- ---- [ 40.315275][ T400] lock(&p->alloc_lock); [ 40.315379][ T400] local_irq_disable(); [ 40.315544][ T400] lock(&ndev->lock); [ 40.315751][ T400] lock(&p->alloc_lock); [ 40.315924][ T400] [ 40.316031][ T400] lock(&ndev->lock); [ 40.316137][ T400] [ 40.316137][ T400] *** DEADLOCK *** [ 40.316137][ T400] [ 40.316335][ T400] 3 locks held by sysctl/400: [ 40.316472][ T400] #0: ffff888005ec43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.316724][ T400] #1: ffffffffb8d969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.317007][ T400] #2: ffff8880062c0d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.317249][ T400] [ 40.317249][ T400] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.317516][ T400] -> (&ndev->lock){++--}-{2:2} { [ 40.317657][ T400] HARDIRQ-ON-W at: [ 40.317763][ T400] __lock_acquire+0x797/0x1570 [ 40.317943][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.318122][ T400] _raw_write_lock_bh+0x38/0x50 [ 40.318310][ T400] addrconf_permanent_addr+0x6e/0x670 [ 40.318484][ T400] addrconf_notify+0x749/0xd60 [ 40.318661][ T400] notifier_call_chain+0xcd/0x150 [ 40.318837][ T400] __dev_notify_flags+0xe6/0x250 [ 40.319014][ T400] dev_change_flags+0xec/0x160 [ 40.319197][ T400] do_setlink+0x7d6/0x21e0 [ 40.319382][ T400] __rtnl_newlink+0xaa7/0xd80 [ 40.319555][ T400] rtnl_newlink+0x63/0xa0 [ 40.319731][ T400] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.319913][ T400] netlink_rcv_skb+0x130/0x360 [ 40.320094][ T400] netlink_unicast+0x449/0x710 [ 40.320274][ T400] netlink_sendmsg+0x723/0xbe0 [ 40.320450][ T400] ____sys_sendmsg+0x7b2/0xa10 [ 40.320624][ T400] ___sys_sendmsg+0xee/0x170 [ 40.320800][ T400] __sys_sendmsg+0xcd/0x170 [ 40.320972][ T400] do_syscall_64+0xc6/0x1e0 [ 40.321146][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.321381][ T400] HARDIRQ-ON-R at: [ 40.321489][ T400] __lock_acquire+0x797/0x1570 [ 40.321670][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.321844][ T400] _raw_read_lock_bh+0x44/0x80 [ 40.322026][ T400] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.322202][ T400] inet6_fill_link_af+0x5e/0xe0 [ 40.322383][ T400] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.322564][ T400] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.322735][ T400] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.322943][ T400] rtmsg_ifinfo+0x5b/0xa0 [ 40.323119][ T400] register_netdevice+0x1177/0x1690 [ 40.323289][ T400] register_netdev+0x20/0x40 [ 40.323470][ T400] sit_init_net+0x250/0x4f0 [ 40.323653][ T400] ops_init+0x9b/0x560 [ 40.323793][ T400] register_pernet_operations+0x2db/0x710 [ 40.323997][ T400] register_pernet_device+0x2a/0x60 [ 40.324169][ T400] sit_init+0x23/0xe0 [ 40.324309][ T400] do_one_initcall+0x8d/0x1e0 [ 40.324483][ T400] do_initcalls+0x1b2/0x3e0 [ 40.324658][ T400] kernel_init_freeable+0x232/0x310 [ 40.324835][ T400] kernel_init+0x20/0x200 [ 40.325008][ T400] ret_from_fork+0x31/0x70 [ 40.325182][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.325355][ T400] IN-SOFTIRQ-W at: [ 40.325459][ T400] __lock_acquire+0x797/0x1570 [ 40.325635][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.325809][ T400] _raw_write_lock+0x30/0x40 [ 40.325991][ T400] addrconf_rs_timer+0xa9/0x730 [ 40.326162][ T400] call_timer_fn+0x13b/0x230 [ 40.326341][ T400] __run_timers+0x545/0x810 [ 40.326515][ T400] run_timer_softirq+0xe8/0x1b0 [ 40.326693][ T400] __do_softirq+0x1f8/0x5df [ 40.326873][ T400] irq_exit_rcu+0x97/0xc0 [ 40.327133][ T400] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.327340][ T400] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.327545][ T400] stack_depot_save_flags+0x8e/0x530 [ 40.327804][ T400] set_track_prepare+0x8a/0xd0 [ 40.327983][ T400] __alloc_object+0x2bf/0x6f0 [ 40.328153][ T400] __create_object+0x22/0xb0 [ 40.328343][ T400] kmem_cache_alloc+0x208/0x270 [ 40.328616][ T400] vm_area_alloc+0x20/0x1b0 [ 40.328787][ T400] do_brk_flags+0x213/0x1f10 [ 40.328970][ T400] vm_brk_flags+0x2cd/0x500 [ 40.329220][ T400] elf_load+0x255/0x700 [ 40.329414][ T400] load_elf_binary+0xa36/0x2840 [ 40.329585][ T400] search_binary_handler+0x152/0x550 [ 40.329769][ T400] exec_binprm+0x120/0x400 [ 40.330031][ T400] bprm_execve+0xe9/0x4f0 [ 40.330204][ T400] do_execveat_common.isra.0+0x4a6/0x6a0 [ 40.330407][ T400] __x64_sys_execve+0x8c/0xb0 [ 40.330660][ T400] do_syscall_64+0xc6/0x1e0 [ 40.330831][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.331040][ T400] IN-SOFTIRQ-R at: [ 40.331224][ T400] __lock_acquire+0x797/0x1570 [ 40.331396][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.331569][ T400] _raw_read_lock_bh+0x44/0x80 [ 40.331740][ T400] ipv6_get_lladdr+0xa9/0x3e0 [ 40.331993][ T400] addrconf_rs_timer+0x24a/0x730 [ 40.332170][ T400] call_timer_fn+0x13b/0x230 [ 40.332347][ T400] __run_timers+0x545/0x810 [ 40.332607][ T400] run_timer_softirq+0xe8/0x1b0 [ 40.332779][ T400] __do_softirq+0x1f8/0x5df [ 40.332954][ T400] irq_exit_rcu+0x97/0xc0 [ 40.333126][ T400] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.333493][ T400] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.333717][ T400] stack_depot_save_flags+0x8e/0x530 [ 40.333887][ T400] set_track_prepare+0x8a/0xd0 [ 40.334148][ T400] __alloc_object+0x2bf/0x6f0 [ 40.334317][ T400] __create_object+0x22/0xb0 [ 40.334493][ T400] kmem_cache_alloc+0x208/0x270 [ 40.334768][ T400] vm_area_alloc+0x20/0x1b0 [ 40.334946][ T400] do_brk_flags+0x213/0x1f10 [ 40.335131][ T400] vm_brk_flags+0x2cd/0x500 [ 40.335304][ T400] elf_load+0x255/0x700 [ 40.335477][ T400] load_elf_binary+0xa36/0x2840 [ 40.335647][ T400] search_binary_handler+0x152/0x550 [ 40.335817][ T400] exec_binprm+0x120/0x400 [ 40.336068][ T400] bprm_execve+0xe9/0x4f0 [ 40.336242][ T400] do_execveat_common.isra.0+0x4a6/0x6a0 [ 40.336452][ T400] __x64_sys_execve+0x8c/0xb0 [ 40.336716][ T400] do_syscall_64+0xc6/0x1e0 [ 40.336893][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.337099][ T400] INITIAL USE at: [ 40.337211][ T400] __lock_acquire+0x797/0x1570 [ 40.337388][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.337564][ T400] _raw_write_lock_bh+0x38/0x50 [ 40.337745][ T400] addrconf_permanent_addr+0x6e/0x670 [ 40.338002][ T400] addrconf_notify+0x749/0xd60 [ 40.338182][ T400] notifier_call_chain+0xcd/0x150 [ 40.338364][ T400] __dev_notify_flags+0xe6/0x250 [ 40.338686][ T400] dev_change_flags+0xec/0x160 [ 40.338862][ T400] do_setlink+0x7d6/0x21e0 [ 40.339037][ T400] __rtnl_newlink+0xaa7/0xd80 [ 40.339242][ T400] rtnl_newlink+0x63/0xa0 [ 40.339424][ T400] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.339596][ T400] netlink_rcv_skb+0x130/0x360 [ 40.339772][ T400] netlink_unicast+0x449/0x710 [ 40.339943][ T400] netlink_sendmsg+0x723/0xbe0 [ 40.340116][ T400] ____sys_sendmsg+0x7b2/0xa10 [ 40.340293][ T400] ___sys_sendmsg+0xee/0x170 [ 40.340466][ T400] __sys_sendmsg+0xcd/0x170 [ 40.340725][ T400] do_syscall_64+0xc6/0x1e0 [ 40.340896][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.341111][ T400] INITIAL READ USE at: [ 40.341295][ T400] __lock_acquire+0x797/0x1570 [ 40.341472][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.341646][ T400] _raw_read_lock_bh+0x44/0x80 [ 40.341818][ T400] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.342115][ T400] inet6_fill_link_af+0x5e/0xe0 [ 40.342287][ T400] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.342461][ T400] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.342758][ T400] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.342963][ T400] rtmsg_ifinfo+0x5b/0xa0 [ 40.343141][ T400] register_netdevice+0x1177/0x1690 [ 40.343348][ T400] register_netdev+0x20/0x40 [ 40.343524][ T400] sit_init_net+0x250/0x4f0 [ 40.343703][ T400] ops_init+0x9b/0x560 [ 40.344041][ T400] register_pernet_operations+0x2db/0x710 [ 40.344268][ T400] register_pernet_device+0x2a/0x60 [ 40.344474][ T400] sit_init+0x23/0xe0 [ 40.344746][ T400] do_one_initcall+0x8d/0x1e0 [ 40.344919][ T400] do_initcalls+0x1b2/0x3e0 [ 40.345095][ T400] kernel_init_freeable+0x232/0x310 [ 40.345299][ T400] kernel_init+0x20/0x200 [ 40.345471][ T400] ret_from_fork+0x31/0x70 [ 40.345645][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.345815][ T400] } [ 40.345967][ T400] ... key at: [] __key.37+0x0/0x40 [ 40.346174][ T400] [ 40.346174][ T400] the dependencies between the lock to be acquired [ 40.346175][ T400] and SOFTIRQ-irq-unsafe lock: [ 40.346622][ T400] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.346763][ T400] HARDIRQ-ON-W at: [ 40.346869][ T400] __lock_acquire+0x797/0x1570 [ 40.347041][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.347214][ T400] _raw_spin_lock+0x30/0x40 [ 40.347389][ T400] set_mems_allowed+0x1d/0x210 [ 40.347561][ T400] kernel_init_freeable+0x72/0x310 [ 40.347734][ T400] kernel_init+0x20/0x200 [ 40.347907][ T400] ret_from_fork+0x31/0x70 [ 40.348078][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.348249][ T400] SOFTIRQ-ON-W at: [ 40.348444][ T400] __lock_acquire+0x797/0x1570 [ 40.348619][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.348802][ T400] _raw_spin_lock+0x30/0x40 [ 40.348975][ T400] set_mems_allowed+0x1d/0x210 [ 40.349236][ T400] kernel_init_freeable+0x72/0x310 [ 40.349407][ T400] kernel_init+0x20/0x200 [ 40.349582][ T400] ret_from_fork+0x31/0x70 [ 40.349836][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.350013][ T400] INITIAL USE at: [ 40.350117][ T400] __lock_acquire+0x797/0x1570 [ 40.350293][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.350546][ T400] _raw_spin_lock+0x30/0x40 [ 40.350716][ T400] set_mems_allowed+0x1d/0x210 [ 40.350889][ T400] kernel_init_freeable+0x72/0x310 [ 40.351142][ T400] kernel_init+0x20/0x200 [ 40.351321][ T400] ret_from_fork+0x31/0x70 [ 40.351493][ T400] ret_from_fork_asm+0x1a/0x30 [ 40.351672][ T400] } [ 40.351823][ T400] ... key at: [] __key.387+0x0/0x40 [ 40.352050][ T400] ... acquired at: [ 40.352153][ T400] check_prev_add+0x194/0xce0 [ 40.352291][ T400] validate_chain+0x71d/0x9b0 [ 40.352522][ T400] __lock_acquire+0xaf0/0x1570 [ 40.352668][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.352806][ T400] _raw_spin_lock+0x30/0x40 [ 40.352943][ T400] __get_task_comm+0x27/0x70 [ 40.353092][ T400] ref_tracker_alloc+0x2ee/0x490 [ 40.353354][ T400] netdev_get_by_index+0x5e/0x80 [ 40.353494][ T400] fib6_nh_init+0x3d8/0x15b0 [ 40.353632][ T400] ip6_route_info_create+0xf18/0x17d0 [ 40.353773][ T400] addrconf_f6i_alloc+0x265/0x560 [ 40.353998][ T400] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.354138][ T400] addrconf_join_anycast+0x1c0/0x220 [ 40.354272][ T400] dev_forward_change+0x2a6/0x7b0 [ 40.354413][ T400] addrconf_fixup_forwarding+0x23f/0x460 [ 40.354754][ T400] addrconf_sysctl_forward+0x212/0x2b0 [ 40.354897][ T400] proc_sys_call_handler+0x403/0x5e0 [ 40.355041][ T400] vfs_write+0x9e5/0x10a0 [ 40.355200][ T400] ksys_write+0xf5/0x1e0 [ 40.355351][ T400] do_syscall_64+0xc6/0x1e0 [ 40.355500][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.355686][ T400] [ 40.355764][ T400] [ 40.355764][ T400] stack backtrace: [ 40.356031][ T400] CPU: 1 PID: 400 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.356259][ T400] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.356594][ T400] Call Trace: [ 40.356819][ T400] [ 40.356897][ T400] dump_stack_lvl+0x82/0xd0 [ 40.357053][ T400] print_bad_irq_dependency+0x957/0xd40 [ 40.357204][ T400] ? hlock_class+0x4e/0x130 [ 40.357362][ T400] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.357549][ T400] ? __pfx_usage_skip+0x10/0x10 [ 40.357695][ T400] ? __bfs+0x246/0x650 [ 40.357806][ T400] ? __pfx_usage_match+0x10/0x10 [ 40.357956][ T400] check_irq_usage+0x596/0x850 [ 40.358114][ T400] ? __pfx_check_irq_usage+0x10/0x10 [ 40.358262][ T400] ? __bfs+0x246/0x650 [ 40.358388][ T400] ? __pfx_hlock_conflict+0x10/0x10 [ 40.358544][ T400] ? check_path.constprop.0+0x24/0x50 [ 40.358694][ T400] ? check_noncircular+0x14c/0x3e0 [ 40.358850][ T400] ? __pfx_check_noncircular+0x10/0x10 [ 40.359002][ T400] ? check_prev_add+0x194/0xce0 [ 40.359150][ T400] check_prev_add+0x194/0xce0 [ 40.359306][ T400] ? validate_chain+0x130/0x9b0 [ 40.359459][ T400] validate_chain+0x71d/0x9b0 [ 40.359611][ T400] ? mark_lock+0x38/0x3e0 [ 40.359729][ T400] ? __pfx_validate_chain+0x10/0x10 [ 40.359879][ T400] ? hlock_class+0x4e/0x130 [ 40.360050][ T400] ? mark_lock+0x38/0x3e0 [ 40.360168][ T400] __lock_acquire+0xaf0/0x1570 [ 40.360319][ T400] lock_acquire.part.0+0xeb/0x330 [ 40.360469][ T400] ? __get_task_comm+0x27/0x70 [ 40.360621][ T400] ? mark_lock+0x38/0x3e0 [ 40.360742][ T400] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.360891][ T400] ? trace_lock_acquire+0x135/0x1c0 [ 40.361046][ T400] ? __get_task_comm+0x27/0x70 [ 40.361197][ T400] ? lock_acquire+0x32/0xc0 [ 40.361354][ T400] ? __get_task_comm+0x27/0x70 [ 40.361506][ T400] _raw_spin_lock+0x30/0x40 [ 40.361657][ T400] ? __get_task_comm+0x27/0x70 [ 40.361804][ T400] __get_task_comm+0x27/0x70 [ 40.361961][ T400] ref_tracker_alloc+0x2ee/0x490 [ 40.362113][ T400] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.362262][ T400] ? dev_get_by_index+0x177/0x270 [ 40.362415][ T400] ? netdev_get_by_index+0x5e/0x80 [ 40.362564][ T400] ? fib6_nh_init+0x3d8/0x15b0 [ 40.362715][ T400] ? ip6_route_info_create+0xf18/0x17d0 [ 40.362875][ T400] ? addrconf_f6i_alloc+0x265/0x560 [ 40.363024][ T400] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.363176][ T400] ? addrconf_join_anycast+0x1c0/0x220 [ 40.363327][ T400] ? dev_forward_change+0x2a6/0x7b0 [ 40.363478][ T400] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.363668][ T400] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.363817][ T400] ? proc_sys_call_handler+0x403/0x5e0 [ 40.363971][ T400] ? vfs_write+0x9e5/0x10a0 [ 40.364120][ T400] ? ksys_write+0xf5/0x1e0 [ 40.364268][ T400] ? do_syscall_64+0xc6/0x1e0 [ 40.364417][ T400] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.364608][ T400] ? dev_get_by_index+0x177/0x270 [ 40.364757][ T400] netdev_get_by_index+0x5e/0x80 [ 40.364905][ T400] fib6_nh_init+0x3d8/0x15b0 [ 40.365056][ T400] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.365249][ T400] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.365398][ T400] ? kasan_save_track+0x14/0x30 [ 40.365550][ T400] ? __kasan_kmalloc+0x7f/0x90 [ 40.365699][ T400] ? __kmalloc+0x1d7/0x3c0 [ 40.365850][ T400] ? fib6_get_table+0x116/0x290 [ 40.365998][ T400] ip6_route_info_create+0xf18/0x17d0 [ 40.366144][ T400] ? __lock_release+0x103/0x460 [ 40.366294][ T400] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.366574][ T400] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.366725][ T400] addrconf_f6i_alloc+0x265/0x560 [ 40.366875][ T400] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.367032][ T400] ? do_raw_write_lock+0x122/0x3b0 [ 40.367179][ T400] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.367413][ T400] ? lock_acquire+0x32/0xc0 [ 40.367562][ T400] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.367712][ T400] addrconf_join_anycast+0x1c0/0x220 [ 40.367862][ T400] ? mark_lock+0x38/0x3e0 [ 40.368055][ T400] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.368246][ T400] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.368439][ T400] dev_forward_change+0x2a6/0x7b0 [ 40.368630][ T400] ? __pfx_dev_forward_change+0x10/0x10 [ 40.368870][ T400] addrconf_fixup_forwarding+0x23f/0x460 [ 40.369021][ T400] addrconf_sysctl_forward+0x212/0x2b0 [ 40.369175][ T400] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.369368][ T400] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.369715][ T400] ? trace_kmalloc+0x2a/0xe0 [ 40.369861][ T400] ? __kmalloc_node+0x220/0x400 [ 40.370007][ T400] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.370155][ T400] proc_sys_call_handler+0x403/0x5e0 [ 40.370306][ T400] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.370488][ T400] ? __lock_acquire+0xaf0/0x1570 [ 40.370647][ T400] vfs_write+0x9e5/0x10a0 [ 40.370759][ T400] ? do_user_addr_fault+0x449/0xbe0 [ 40.370988][ T400] ? __pfx_vfs_write+0x10/0x10 [ 40.371140][ T400] ? find_held_lock+0x2c/0x110 [ 40.371288][ T400] ? __pfx___lock_release+0x10/0x10 [ 40.371438][ T400] ? __fget_light+0x53/0x1e0 [ 40.371684][ T400] ksys_write+0xf5/0x1e0 [ 40.371796][ T400] ? __pfx_ksys_write+0x10/0x10 [ 40.371944][ T400] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.372100][ T400] do_syscall_64+0xc6/0x1e0 [ 40.372247][ T400] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.372440][ T400] RIP: 0033:0x7ffae3fa0957 [ 40.372594][ T400] Code: 0b 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24 [ 40.373131][ T400] RSP: 002b:00007ffdae7125d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.373353][ T400] RAX: ffffffffffffffda RBX: 0000563c64821360 RCX: 00007ffae3fa0957 [ 40.373557][ T400] RDX: 0000000000000002 RSI: 0000563c648213a0 RDI: 0000000000000005 [ 40.373850][ T400] RBP: 0000563c648234d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.374055][ T400] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.374294][ T400] R13: 0000000000000002 R14: 0000000000000002 R15: 00007ffae40579c0 [ 40.374511][ T400]