[ 25.374542][ T247] ip (247) used greatest stack depth: 23504 bytes left [ 29.855440][ T297] 8021q: 802.1Q VLAN Support v1.8 [ 30.903133][ T308] gre: GRE over IPv4 demultiplexor driver [ 30.922741][ T308] ip_gre: GRE over IPv4 tunneling driver [ 35.302721][ T351] ip (351) used greatest stack depth: 23440 bytes left [ 38.011873][ T374] GACT probability NOT on [ 39.768270][ T390] [ 39.768385][ T390] ===================================================== [ 39.768562][ T390] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.768770][ T390] 6.9.0-rc1-virtme #1 Not tainted [ 39.768914][ T390] ----------------------------------------------------- [ 39.769126][ T390] sysctl/390 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.769334][ T390] ffff8880058e4ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.769593][ T390] [ 39.769593][ T390] and this task is already holding: [ 39.769792][ T390] ffff88800645ed80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.770037][ T390] which would create a new lock dependency: [ 39.770208][ T390] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.770416][ T390] [ 39.770416][ T390] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.770651][ T390] (&ndev->lock){++--}-{2:2} [ 39.770655][ T390] [ 39.770655][ T390] ... which became SOFTIRQ-irq-safe at: [ 39.770994][ T390] __lock_acquire+0x797/0x1570 [ 39.771137][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.771274][ T390] _raw_write_lock+0x30/0x40 [ 39.771417][ T390] addrconf_rs_timer+0xa9/0x730 [ 39.771557][ T390] call_timer_fn+0x13b/0x230 [ 39.771700][ T390] __run_timers+0x545/0x810 [ 39.771838][ T390] run_timer_softirq+0xe8/0x1b0 [ 39.771980][ T390] __do_softirq+0x1f8/0x5df [ 39.772117][ T390] irq_exit_rcu+0x97/0xc0 [ 39.772254][ T390] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.772393][ T390] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.772569][ T390] default_idle+0xf/0x20 [ 39.772674][ T390] default_idle_call+0x6d/0xb0 [ 39.772809][ T390] cpuidle_idle_call+0x1f4/0x280 [ 39.772949][ T390] do_idle+0xf9/0x160 [ 39.773055][ T390] cpu_startup_entry+0x54/0x60 [ 39.773194][ T390] start_secondary+0x21c/0x2b0 [ 39.773333][ T390] common_startup_64+0x12c/0x138 [ 39.773471][ T390] [ 39.773471][ T390] to a SOFTIRQ-irq-unsafe lock: [ 39.773637][ T390] (&p->alloc_lock){+.+.}-{2:2} [ 39.773641][ T390] [ 39.773641][ T390] ... which became SOFTIRQ-irq-unsafe at: [ 39.773979][ T390] ... [ 39.773981][ T390] __lock_acquire+0x797/0x1570 [ 39.774192][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.774331][ T390] _raw_spin_lock+0x30/0x40 [ 39.774471][ T390] set_mems_allowed+0x1d/0x210 [ 39.774611][ T390] kernel_init_freeable+0x72/0x310 [ 39.774751][ T390] kernel_init+0x20/0x200 [ 39.774892][ T390] ret_from_fork+0x31/0x70 [ 39.775033][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.775170][ T390] [ 39.775170][ T390] other info that might help us debug this: [ 39.775170][ T390] [ 39.775452][ T390] Possible interrupt unsafe locking scenario: [ 39.775452][ T390] [ 39.775657][ T390] CPU0 CPU1 [ 39.775793][ T390] ---- ---- [ 39.775927][ T390] lock(&p->alloc_lock); [ 39.776034][ T390] local_irq_disable(); [ 39.776203][ T390] lock(&ndev->lock); [ 39.776378][ T390] lock(&p->alloc_lock); [ 39.776548][ T390] [ 39.776660][ T390] lock(&ndev->lock); [ 39.776766][ T390] [ 39.776766][ T390] *** DEADLOCK *** [ 39.776766][ T390] [ 39.776968][ T390] 3 locks held by sysctl/390: [ 39.777109][ T390] #0: ffff8880060d43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.777362][ T390] #1: ffffffffa27969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.777648][ T390] #2: ffff88800645ed80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.777895][ T390] [ 39.777895][ T390] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.778159][ T390] -> (&ndev->lock){++--}-{2:2} { [ 39.778304][ T390] HARDIRQ-ON-W at: [ 39.778416][ T390] __lock_acquire+0x797/0x1570 [ 39.778598][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.778769][ T390] _raw_write_lock_bh+0x38/0x50 [ 39.778955][ T390] addrconf_permanent_addr+0x6e/0x670 [ 39.779132][ T390] addrconf_notify+0x749/0xd60 [ 39.779306][ T390] notifier_call_chain+0xcd/0x150 [ 39.779481][ T390] __dev_notify_flags+0xe6/0x250 [ 39.779663][ T390] dev_change_flags+0xec/0x160 [ 39.779837][ T390] do_setlink+0x7d6/0x21e0 [ 39.780012][ T390] __rtnl_newlink+0xaa7/0xd80 [ 39.780186][ T390] rtnl_newlink+0x63/0xa0 [ 39.780363][ T390] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.780539][ T390] netlink_rcv_skb+0x130/0x360 [ 39.780713][ T390] netlink_unicast+0x449/0x710 [ 39.780890][ T390] netlink_sendmsg+0x723/0xbe0 [ 39.781063][ T390] ____sys_sendmsg+0x7b2/0xa10 [ 39.781237][ T390] ___sys_sendmsg+0xee/0x170 [ 39.781411][ T390] __sys_sendmsg+0xcd/0x170 [ 39.781583][ T390] do_syscall_64+0xc6/0x1e0 [ 39.781757][ T390] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.781972][ T390] HARDIRQ-ON-R at: [ 39.782079][ T390] __lock_acquire+0x797/0x1570 [ 39.782254][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.782429][ T390] _raw_read_lock_bh+0x44/0x80 [ 39.782606][ T390] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.782781][ T390] inet6_fill_link_af+0x5e/0xe0 [ 39.782962][ T390] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.783136][ T390] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.783311][ T390] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.783519][ T390] rtmsg_ifinfo+0x5b/0xa0 [ 39.783691][ T390] register_netdevice+0x1177/0x1690 [ 39.783868][ T390] register_netdev+0x20/0x40 [ 39.784042][ T390] sit_init_net+0x250/0x4f0 [ 39.784222][ T390] ops_init+0x9b/0x560 [ 39.784362][ T390] register_pernet_operations+0x2db/0x710 [ 39.784570][ T390] register_pernet_device+0x2a/0x60 [ 39.784752][ T390] sit_init+0x23/0xe0 [ 39.784904][ T390] do_one_initcall+0x8d/0x1e0 [ 39.785100][ T390] do_initcalls+0x1b2/0x3e0 [ 39.785299][ T390] kernel_init_freeable+0x232/0x310 [ 39.785489][ T390] kernel_init+0x20/0x200 [ 39.785683][ T390] ret_from_fork+0x31/0x70 [ 39.785877][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.786068][ T390] IN-SOFTIRQ-W at: [ 39.786184][ T390] __lock_acquire+0x797/0x1570 [ 39.786378][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.786574][ T390] _raw_write_lock+0x30/0x40 [ 39.786765][ T390] addrconf_rs_timer+0xa9/0x730 [ 39.786954][ T390] call_timer_fn+0x13b/0x230 [ 39.787146][ T390] __run_timers+0x545/0x810 [ 39.787336][ T390] run_timer_softirq+0xe8/0x1b0 [ 39.787526][ T390] __do_softirq+0x1f8/0x5df [ 39.787716][ T390] irq_exit_rcu+0x97/0xc0 [ 39.787911][ T390] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.788140][ T390] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.788351][ T390] default_idle+0xf/0x20 [ 39.788522][ T390] default_idle_call+0x6d/0xb0 [ 39.788697][ T390] cpuidle_idle_call+0x1f4/0x280 [ 39.788875][ T390] do_idle+0xf9/0x160 [ 39.789029][ T390] cpu_startup_entry+0x54/0x60 [ 39.789203][ T390] start_secondary+0x21c/0x2b0 [ 39.789378][ T390] common_startup_64+0x12c/0x138 [ 39.789554][ T390] IN-SOFTIRQ-R at: [ 39.789659][ T390] __lock_acquire+0x797/0x1570 [ 39.789834][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.790009][ T390] _raw_read_lock_bh+0x44/0x80 [ 39.790191][ T390] ipv6_get_lladdr+0xa9/0x3e0 [ 39.790363][ T390] addrconf_rs_timer+0x24a/0x730 [ 39.790536][ T390] call_timer_fn+0x13b/0x230 [ 39.790711][ T390] __run_timers+0x545/0x810 [ 39.790885][ T390] run_timer_softirq+0xe8/0x1b0 [ 39.791059][ T390] __do_softirq+0x1f8/0x5df [ 39.791240][ T390] irq_exit_rcu+0x97/0xc0 [ 39.791414][ T390] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.791617][ T390] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.791825][ T390] default_idle+0xf/0x20 [ 39.792001][ T390] default_idle_call+0x6d/0xb0 [ 39.792211][ T390] cpuidle_idle_call+0x1f4/0x280 [ 39.792408][ T390] do_idle+0xf9/0x160 [ 39.792549][ T390] cpu_startup_entry+0x54/0x60 [ 39.792726][ T390] start_secondary+0x21c/0x2b0 [ 39.792897][ T390] common_startup_64+0x12c/0x138 [ 39.793071][ T390] INITIAL USE at: [ 39.793188][ T390] __lock_acquire+0x797/0x1570 [ 39.793361][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.793541][ T390] _raw_write_lock_bh+0x38/0x50 [ 39.793714][ T390] addrconf_permanent_addr+0x6e/0x670 [ 39.793889][ T390] addrconf_notify+0x749/0xd60 [ 39.794064][ T390] notifier_call_chain+0xcd/0x150 [ 39.794241][ T390] __dev_notify_flags+0xe6/0x250 [ 39.794414][ T390] dev_change_flags+0xec/0x160 [ 39.794592][ T390] do_setlink+0x7d6/0x21e0 [ 39.794766][ T390] __rtnl_newlink+0xaa7/0xd80 [ 39.795106][ T390] rtnl_newlink+0x63/0xa0 [ 39.795279][ T390] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.795453][ T390] netlink_rcv_skb+0x130/0x360 [ 39.795629][ T390] netlink_unicast+0x449/0x710 [ 39.795881][ T390] netlink_sendmsg+0x723/0xbe0 [ 39.796058][ T390] ____sys_sendmsg+0x7b2/0xa10 [ 39.796229][ T390] ___sys_sendmsg+0xee/0x170 [ 39.796492][ T390] __sys_sendmsg+0xcd/0x170 [ 39.796664][ T390] do_syscall_64+0xc6/0x1e0 [ 39.796837][ T390] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.797042][ T390] INITIAL READ USE at: [ 39.797146][ T390] __lock_acquire+0x797/0x1570 [ 39.797325][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.797497][ T390] _raw_read_lock_bh+0x44/0x80 [ 39.797753][ T390] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.797958][ T390] inet6_fill_link_af+0x5e/0xe0 [ 39.798135][ T390] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.798390][ T390] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.798605][ T390] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.798811][ T390] rtmsg_ifinfo+0x5b/0xa0 [ 39.798991][ T390] register_netdevice+0x1177/0x1690 [ 39.799203][ T390] register_netdev+0x20/0x40 [ 39.799376][ T390] sit_init_net+0x250/0x4f0 [ 39.799552][ T390] ops_init+0x9b/0x560 [ 39.799807][ T390] register_pernet_operations+0x2db/0x710 [ 39.800013][ T390] register_pernet_device+0x2a/0x60 [ 39.800218][ T390] sit_init+0x23/0xe0 [ 39.800472][ T390] do_one_initcall+0x8d/0x1e0 [ 39.800645][ T390] do_initcalls+0x1b2/0x3e0 [ 39.800831][ T390] kernel_init_freeable+0x232/0x310 [ 39.801122][ T390] kernel_init+0x20/0x200 [ 39.801296][ T390] ret_from_fork+0x31/0x70 [ 39.801476][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.801732][ T390] } [ 39.801805][ T390] ... key at: [] __key.37+0x0/0x40 [ 39.802020][ T390] [ 39.802020][ T390] the dependencies between the lock to be acquired [ 39.802021][ T390] and SOFTIRQ-irq-unsafe lock: [ 39.802479][ T390] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.802624][ T390] HARDIRQ-ON-W at: [ 39.802731][ T390] __lock_acquire+0x797/0x1570 [ 39.802911][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.803087][ T390] _raw_spin_lock+0x30/0x40 [ 39.803261][ T390] set_mems_allowed+0x1d/0x210 [ 39.803442][ T390] kernel_init_freeable+0x72/0x310 [ 39.803699][ T390] kernel_init+0x20/0x200 [ 39.803871][ T390] ret_from_fork+0x31/0x70 [ 39.804046][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.804223][ T390] SOFTIRQ-ON-W at: [ 39.804411][ T390] __lock_acquire+0x797/0x1570 [ 39.804585][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.804764][ T390] _raw_spin_lock+0x30/0x40 [ 39.805020][ T390] set_mems_allowed+0x1d/0x210 [ 39.805191][ T390] kernel_init_freeable+0x72/0x310 [ 39.805365][ T390] kernel_init+0x20/0x200 [ 39.805538][ T390] ret_from_fork+0x31/0x70 [ 39.805874][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.806051][ T390] INITIAL USE at: [ 39.806157][ T390] __lock_acquire+0x797/0x1570 [ 39.806332][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.806597][ T390] _raw_spin_lock+0x30/0x40 [ 39.806771][ T390] set_mems_allowed+0x1d/0x210 [ 39.806946][ T390] kernel_init_freeable+0x72/0x310 [ 39.807121][ T390] kernel_init+0x20/0x200 [ 39.807298][ T390] ret_from_fork+0x31/0x70 [ 39.807472][ T390] ret_from_fork_asm+0x1a/0x30 [ 39.807726][ T390] } [ 39.807803][ T390] ... key at: [] __key.387+0x0/0x40 [ 39.808014][ T390] ... acquired at: [ 39.808118][ T390] check_prev_add+0x194/0xce0 [ 39.808259][ T390] validate_chain+0x71d/0x9b0 [ 39.808479][ T390] __lock_acquire+0xaf0/0x1570 [ 39.808620][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.808757][ T390] _raw_spin_lock+0x30/0x40 [ 39.808893][ T390] __get_task_comm+0x27/0x70 [ 39.809042][ T390] ref_tracker_alloc+0x2ee/0x490 [ 39.809181][ T390] netdev_get_by_index+0x5e/0x80 [ 39.809319][ T390] fib6_nh_init+0x3d8/0x15b0 [ 39.809463][ T390] ip6_route_info_create+0xf18/0x17d0 [ 39.809685][ T390] addrconf_f6i_alloc+0x265/0x560 [ 39.809828][ T390] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.809969][ T390] addrconf_join_anycast+0x1c0/0x220 [ 39.810107][ T390] dev_forward_change+0x2a6/0x7b0 [ 39.810245][ T390] addrconf_fixup_forwarding+0x23f/0x460 [ 39.810493][ T390] addrconf_sysctl_forward+0x212/0x2b0 [ 39.810668][ T390] proc_sys_call_handler+0x403/0x5e0 [ 39.810820][ T390] vfs_write+0x9e5/0x10a0 [ 39.810975][ T390] ksys_write+0xf5/0x1e0 [ 39.811205][ T390] do_syscall_64+0xc6/0x1e0 [ 39.811354][ T390] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.811539][ T390] [ 39.811619][ T390] [ 39.811619][ T390] stack backtrace: [ 39.811884][ T390] CPU: 3 PID: 390 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.812108][ T390] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.812528][ T390] Call Trace: [ 39.812643][ T390] [ 39.812719][ T390] dump_stack_lvl+0x82/0xd0 [ 39.812872][ T390] print_bad_irq_dependency+0x957/0xd40 [ 39.813023][ T390] ? hlock_class+0x4e/0x130 [ 39.813251][ T390] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.813445][ T390] ? __pfx_usage_skip+0x10/0x10 [ 39.813593][ T390] ? __bfs+0x246/0x650 [ 39.813706][ T390] ? __pfx_usage_match+0x10/0x10 [ 39.813860][ T390] check_irq_usage+0x596/0x850 [ 39.814088][ T390] ? __pfx_check_irq_usage+0x10/0x10 [ 39.814237][ T390] ? __bfs+0x246/0x650 [ 39.814348][ T390] ? __pfx_hlock_conflict+0x10/0x10 [ 39.814502][ T390] ? check_path.constprop.0+0x24/0x50 [ 39.814732][ T390] ? check_noncircular+0x14c/0x3e0 [ 39.814879][ T390] ? __pfx_check_noncircular+0x10/0x10 [ 39.815030][ T390] ? check_prev_add+0x194/0xce0 [ 39.815180][ T390] check_prev_add+0x194/0xce0 [ 39.815414][ T390] ? validate_chain+0x130/0x9b0 [ 39.815567][ T390] validate_chain+0x71d/0x9b0 [ 39.815718][ T390] ? mark_lock+0x38/0x3e0 [ 39.815830][ T390] ? __pfx_validate_chain+0x10/0x10 [ 39.815978][ T390] ? hlock_class+0x4e/0x130 [ 39.816129][ T390] ? mark_lock+0x38/0x3e0 [ 39.816243][ T390] __lock_acquire+0xaf0/0x1570 [ 39.816395][ T390] lock_acquire.part.0+0xeb/0x330 [ 39.816552][ T390] ? __get_task_comm+0x27/0x70 [ 39.816860][ T390] ? mark_lock+0x38/0x3e0 [ 39.816973][ T390] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.817121][ T390] ? trace_lock_acquire+0x135/0x1c0 [ 39.817269][ T390] ? __get_task_comm+0x27/0x70 [ 39.817417][ T390] ? lock_acquire+0x32/0xc0 [ 39.817646][ T390] ? __get_task_comm+0x27/0x70 [ 39.817795][ T390] _raw_spin_lock+0x30/0x40 [ 39.817948][ T390] ? __get_task_comm+0x27/0x70 [ 39.818097][ T390] __get_task_comm+0x27/0x70 [ 39.818329][ T390] ref_tracker_alloc+0x2ee/0x490 [ 39.818479][ T390] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.818628][ T390] ? dev_get_by_index+0x177/0x270 [ 39.818779][ T390] ? netdev_get_by_index+0x5e/0x80 [ 39.819011][ T390] ? fib6_nh_init+0x3d8/0x15b0 [ 39.819162][ T390] ? ip6_route_info_create+0xf18/0x17d0 [ 39.819309][ T390] ? addrconf_f6i_alloc+0x265/0x560 [ 39.819461][ T390] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.819609][ T390] ? addrconf_join_anycast+0x1c0/0x220 [ 39.819841][ T390] ? dev_forward_change+0x2a6/0x7b0 [ 39.819989][ T390] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.820173][ T390] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.820321][ T390] ? proc_sys_call_handler+0x403/0x5e0 [ 39.820555][ T390] ? vfs_write+0x9e5/0x10a0 [ 39.820706][ T390] ? ksys_write+0xf5/0x1e0 [ 39.820855][ T390] ? do_syscall_64+0xc6/0x1e0 [ 39.821005][ T390] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.821189][ T390] ? dev_get_by_index+0x177/0x270 [ 39.821339][ T390] netdev_get_by_index+0x5e/0x80 [ 39.821486][ T390] fib6_nh_init+0x3d8/0x15b0 [ 39.821635][ T390] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.821903][ T390] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.822056][ T390] ? kasan_save_track+0x14/0x30 [ 39.822204][ T390] ? __kasan_kmalloc+0x7f/0x90 [ 39.822353][ T390] ? __kmalloc+0x1d7/0x3c0 [ 39.822587][ T390] ? fib6_get_table+0x116/0x290 [ 39.822736][ T390] ip6_route_info_create+0xf18/0x17d0 [ 39.822885][ T390] ? __lock_release+0x103/0x460 [ 39.823036][ T390] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.823220][ T390] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.823373][ T390] addrconf_f6i_alloc+0x265/0x560 [ 39.823522][ T390] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.823674][ T390] ? do_raw_write_lock+0x122/0x3b0 [ 39.823909][ T390] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.824055][ T390] ? lock_acquire+0x32/0xc0 [ 39.824205][ T390] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.824354][ T390] addrconf_join_anycast+0x1c0/0x220 [ 39.824582][ T390] ? mark_lock+0x38/0x3e0 [ 39.824702][ T390] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.824886][ T390] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.825073][ T390] dev_forward_change+0x2a6/0x7b0 [ 39.825300][ T390] ? __pfx_dev_forward_change+0x10/0x10 [ 39.825451][ T390] addrconf_fixup_forwarding+0x23f/0x460 [ 39.825600][ T390] addrconf_sysctl_forward+0x212/0x2b0 [ 39.825747][ T390] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.826016][ T390] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.826198][ T390] ? trace_kmalloc+0x2a/0xe0 [ 39.826342][ T390] ? __kmalloc_node+0x220/0x400 [ 39.826489][ T390] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.826716][ T390] proc_sys_call_handler+0x403/0x5e0 [ 39.826863][ T390] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.827051][ T390] ? __lock_acquire+0xaf0/0x1570 [ 39.827201][ T390] vfs_write+0x9e5/0x10a0 [ 39.827316][ T390] ? do_user_addr_fault+0x449/0xbe0 [ 39.827550][ T390] ? __pfx_vfs_write+0x10/0x10 [ 39.827695][ T390] ? find_held_lock+0x2c/0x110 [ 39.827842][ T390] ? __pfx___lock_release+0x10/0x10 [ 39.827992][ T390] ? __fget_light+0x53/0x1e0 [ 39.828219][ T390] ksys_write+0xf5/0x1e0 [ 39.828330][ T390] ? __pfx_ksys_write+0x10/0x10 [ 39.828476][ T390] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.828621][ T390] do_syscall_64+0xc6/0x1e0 [ 39.828849][ T390] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.829125][ T390] RIP: 0033:0x7ffaf1051957 [ 39.829287][ T390] 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 [ 39.829896][ T390] RSP: 002b:00007ffe5329cea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.830124][ T390] RAX: ffffffffffffffda RBX: 0000561b79d98360 RCX: 00007ffaf1051957 [ 39.830433][ T390] RDX: 0000000000000002 RSI: 0000561b79d983a0 RDI: 0000000000000005 [ 39.830649][ T390] RBP: 0000561b79d9a4d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.830867][ T390] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.831085][ T390] R13: 0000000000000002 R14: 0000000000000002 R15: 00007ffaf11089c0 [ 39.831317][ T390]