[ 27.861268][ T287] ip (287) used greatest stack depth: 23696 bytes left [ 30.194592][ T309] gre: GRE over IPv4 demultiplexor driver [ 30.262382][ T309] ip6_gre: GRE over IPv6 tunneling driver [ 30.540443][ T314] ip (314) used greatest stack depth: 23648 bytes left [ 32.265501][ T330] 8021q: 802.1Q VLAN Support v1.8 [ 36.238353][ T368] GACT probability NOT on [ 39.650309][ T401] [ 39.650410][ T401] ===================================================== [ 39.650584][ T401] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.650790][ T401] 6.9.0-rc1-virtme #1 Not tainted [ 39.650932][ T401] ----------------------------------------------------- [ 39.651119][ T401] sysctl/401 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.651322][ T401] ffff88801b6b2c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.651574][ T401] [ 39.651574][ T401] and this task is already holding: [ 39.651779][ T401] ffff88800293d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.652025][ T401] which would create a new lock dependency: [ 39.652195][ T401] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.652405][ T401] [ 39.652405][ T401] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.652639][ T401] (&ndev->lock){++--}-{2:2} [ 39.652643][ T401] [ 39.652643][ T401] ... which became SOFTIRQ-irq-safe at: [ 39.652984][ T401] __lock_acquire+0x797/0x1570 [ 39.653131][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.653267][ T401] _raw_write_lock+0x30/0x40 [ 39.653408][ T401] addrconf_rs_timer+0xa9/0x730 [ 39.653547][ T401] call_timer_fn+0x13b/0x230 [ 39.653689][ T401] __run_timers+0x545/0x810 [ 39.653825][ T401] run_timer_softirq+0xe8/0x1b0 [ 39.653965][ T401] __do_softirq+0x1f8/0x5df [ 39.654105][ T401] irq_exit_rcu+0x97/0xc0 [ 39.654244][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.654379][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.654549][ T401] default_idle+0xf/0x20 [ 39.654655][ T401] default_idle_call+0x6d/0xb0 [ 39.654791][ T401] cpuidle_idle_call+0x1f4/0x280 [ 39.654931][ T401] do_idle+0xf9/0x160 [ 39.655034][ T401] cpu_startup_entry+0x54/0x60 [ 39.655172][ T401] start_secondary+0x21c/0x2b0 [ 39.655329][ T401] common_startup_64+0x12c/0x138 [ 39.655470][ T401] [ 39.655470][ T401] to a SOFTIRQ-irq-unsafe lock: [ 39.655638][ T401] (&p->alloc_lock){+.+.}-{2:2} [ 39.655643][ T401] [ 39.655643][ T401] ... which became SOFTIRQ-irq-unsafe at: [ 39.655983][ T401] ... [ 39.655984][ T401] __lock_acquire+0x797/0x1570 [ 39.656195][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.656336][ T401] _raw_spin_lock+0x30/0x40 [ 39.656476][ T401] set_mems_allowed+0x1d/0x210 [ 39.656615][ T401] kernel_init_freeable+0x72/0x310 [ 39.656756][ T401] kernel_init+0x20/0x200 [ 39.656893][ T401] ret_from_fork+0x31/0x70 [ 39.657033][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.657171][ T401] [ 39.657171][ T401] other info that might help us debug this: [ 39.657171][ T401] [ 39.657432][ T401] Possible interrupt unsafe locking scenario: [ 39.657432][ T401] [ 39.657638][ T401] CPU0 CPU1 [ 39.657772][ T401] ---- ---- [ 39.657910][ T401] lock(&p->alloc_lock); [ 39.658023][ T401] local_irq_disable(); [ 39.658192][ T401] lock(&ndev->lock); [ 39.658363][ T401] lock(&p->alloc_lock); [ 39.658534][ T401] [ 39.658637][ T401] lock(&ndev->lock); [ 39.658742][ T401] [ 39.658742][ T401] *** DEADLOCK *** [ 39.658742][ T401] [ 39.658950][ T401] 3 locks held by sysctl/401: [ 39.659100][ T401] #0: ffff88801b42c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.659350][ T401] #1: ffffffffb91969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.659632][ T401] #2: ffff88800293d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.659875][ T401] [ 39.659875][ T401] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.660144][ T401] -> (&ndev->lock){++--}-{2:2} { [ 39.660288][ T401] HARDIRQ-ON-W at: [ 39.660399][ T401] __lock_acquire+0x797/0x1570 [ 39.660575][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.660751][ T401] _raw_write_lock_bh+0x38/0x50 [ 39.660927][ T401] addrconf_permanent_addr+0x6e/0x670 [ 39.661114][ T401] addrconf_notify+0x749/0xd60 [ 39.661289][ T401] notifier_call_chain+0xcd/0x150 [ 39.661466][ T401] __dev_notify_flags+0xe6/0x250 [ 39.661642][ T401] dev_change_flags+0xec/0x160 [ 39.661818][ T401] do_setlink+0x7d6/0x21e0 [ 39.661999][ T401] __rtnl_newlink+0xaa7/0xd80 [ 39.662174][ T401] rtnl_newlink+0x63/0xa0 [ 39.662348][ T401] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.662521][ T401] netlink_rcv_skb+0x130/0x360 [ 39.662695][ T401] netlink_unicast+0x449/0x710 [ 39.662866][ T401] netlink_sendmsg+0x723/0xbe0 [ 39.663051][ T401] ____sys_sendmsg+0x7b2/0xa10 [ 39.663233][ T401] ___sys_sendmsg+0xee/0x170 [ 39.663405][ T401] __sys_sendmsg+0xcd/0x170 [ 39.663579][ T401] do_syscall_64+0xc6/0x1e0 [ 39.663750][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.663961][ T401] HARDIRQ-ON-R at: [ 39.664064][ T401] __lock_acquire+0x797/0x1570 [ 39.664240][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.664412][ T401] _raw_read_lock_bh+0x44/0x80 [ 39.664588][ T401] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.664761][ T401] inet6_fill_link_af+0x5e/0xe0 [ 39.664937][ T401] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.665107][ T401] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.665280][ T401] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.665485][ T401] rtmsg_ifinfo+0x5b/0xa0 [ 39.665656][ T401] register_netdevice+0x1177/0x1690 [ 39.665830][ T401] register_netdev+0x20/0x40 [ 39.666006][ T401] sit_init_net+0x250/0x4f0 [ 39.666180][ T401] ops_init+0x9b/0x560 [ 39.666321][ T401] register_pernet_operations+0x2db/0x710 [ 39.666527][ T401] register_pernet_device+0x2a/0x60 [ 39.666699][ T401] sit_init+0x23/0xe0 [ 39.666838][ T401] do_one_initcall+0x8d/0x1e0 [ 39.667022][ T401] do_initcalls+0x1b2/0x3e0 [ 39.667194][ T401] kernel_init_freeable+0x232/0x310 [ 39.667367][ T401] kernel_init+0x20/0x200 [ 39.667542][ T401] ret_from_fork+0x31/0x70 [ 39.667715][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.667887][ T401] IN-SOFTIRQ-W at: [ 39.667990][ T401] __lock_acquire+0x797/0x1570 [ 39.668162][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.668337][ T401] _raw_write_lock+0x30/0x40 [ 39.668510][ T401] addrconf_rs_timer+0xa9/0x730 [ 39.668681][ T401] call_timer_fn+0x13b/0x230 [ 39.668857][ T401] __run_timers+0x545/0x810 [ 39.669032][ T401] run_timer_softirq+0xe8/0x1b0 [ 39.669202][ T401] __do_softirq+0x1f8/0x5df [ 39.669373][ T401] irq_exit_rcu+0x97/0xc0 [ 39.669545][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.669751][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.669958][ T401] default_idle+0xf/0x20 [ 39.670132][ T401] default_idle_call+0x6d/0xb0 [ 39.670302][ T401] cpuidle_idle_call+0x1f4/0x280 [ 39.670472][ T401] do_idle+0xf9/0x160 [ 39.670610][ T401] cpu_startup_entry+0x54/0x60 [ 39.670787][ T401] start_secondary+0x21c/0x2b0 [ 39.670959][ T401] common_startup_64+0x12c/0x138 [ 39.671144][ T401] IN-SOFTIRQ-R at: [ 39.671249][ T401] __lock_acquire+0x797/0x1570 [ 39.671420][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.671594][ T401] _raw_read_lock_bh+0x44/0x80 [ 39.671765][ T401] ipv6_get_lladdr+0xa9/0x3e0 [ 39.671940][ T401] addrconf_rs_timer+0x24a/0x730 [ 39.672111][ T401] call_timer_fn+0x13b/0x230 [ 39.672281][ T401] __run_timers+0x545/0x810 [ 39.672456][ T401] run_timer_softirq+0xe8/0x1b0 [ 39.672626][ T401] __do_softirq+0x1f8/0x5df [ 39.672797][ T401] irq_exit_rcu+0x97/0xc0 [ 39.672969][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.673174][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.673379][ T401] default_idle+0xf/0x20 [ 39.673549][ T401] default_idle_call+0x6d/0xb0 [ 39.673722][ T401] cpuidle_idle_call+0x1f4/0x280 [ 39.673896][ T401] do_idle+0xf9/0x160 [ 39.674036][ T401] cpu_startup_entry+0x54/0x60 [ 39.674213][ T401] start_secondary+0x21c/0x2b0 [ 39.674389][ T401] common_startup_64+0x12c/0x138 [ 39.674559][ T401] INITIAL USE at: [ 39.674661][ T401] __lock_acquire+0x797/0x1570 [ 39.674997][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.675168][ T401] _raw_write_lock_bh+0x38/0x50 [ 39.675344][ T401] addrconf_permanent_addr+0x6e/0x670 [ 39.675516][ T401] addrconf_notify+0x749/0xd60 [ 39.675768][ T401] notifier_call_chain+0xcd/0x150 [ 39.675939][ T401] __dev_notify_flags+0xe6/0x250 [ 39.676115][ T401] dev_change_flags+0xec/0x160 [ 39.676367][ T401] do_setlink+0x7d6/0x21e0 [ 39.676539][ T401] __rtnl_newlink+0xaa7/0xd80 [ 39.676710][ T401] rtnl_newlink+0x63/0xa0 [ 39.676963][ T401] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.677134][ T401] netlink_rcv_skb+0x130/0x360 [ 39.677306][ T401] netlink_unicast+0x449/0x710 [ 39.677476][ T401] netlink_sendmsg+0x723/0xbe0 [ 39.677728][ T401] ____sys_sendmsg+0x7b2/0xa10 [ 39.677901][ T401] ___sys_sendmsg+0xee/0x170 [ 39.678072][ T401] __sys_sendmsg+0xcd/0x170 [ 39.678326][ T401] do_syscall_64+0xc6/0x1e0 [ 39.678496][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.678699][ T401] INITIAL READ USE at: [ 39.678802][ T401] __lock_acquire+0x797/0x1570 [ 39.679053][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.679230][ T401] _raw_read_lock_bh+0x44/0x80 [ 39.679401][ T401] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.679685][ T401] inet6_fill_link_af+0x5e/0xe0 [ 39.679856][ T401] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.680026][ T401] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.680317][ T401] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.680520][ T401] rtmsg_ifinfo+0x5b/0xa0 [ 39.680690][ T401] register_netdevice+0x1177/0x1690 [ 39.680983][ T401] register_netdev+0x20/0x40 [ 39.681158][ T401] sit_init_net+0x250/0x4f0 [ 39.681328][ T401] ops_init+0x9b/0x560 [ 39.681501][ T401] register_pernet_operations+0x2db/0x710 [ 39.681786][ T401] register_pernet_device+0x2a/0x60 [ 39.681990][ T401] sit_init+0x23/0xe0 [ 39.682162][ T401] do_one_initcall+0x8d/0x1e0 [ 39.682415][ T401] do_initcalls+0x1b2/0x3e0 [ 39.682585][ T401] kernel_init_freeable+0x232/0x310 [ 39.682790][ T401] kernel_init+0x20/0x200 [ 39.683045][ T401] ret_from_fork+0x31/0x70 [ 39.683218][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.683389][ T401] } [ 39.683460][ T401] ... key at: [] __key.37+0x0/0x40 [ 39.683747][ T401] [ 39.683747][ T401] the dependencies between the lock to be acquired [ 39.683748][ T401] and SOFTIRQ-irq-unsafe lock: [ 39.684118][ T401] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.684341][ T401] HARDIRQ-ON-W at: [ 39.684444][ T401] __lock_acquire+0x797/0x1570 [ 39.684617][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.684788][ T401] _raw_spin_lock+0x30/0x40 [ 39.685043][ T401] set_mems_allowed+0x1d/0x210 [ 39.685212][ T401] kernel_init_freeable+0x72/0x310 [ 39.685396][ T401] kernel_init+0x20/0x200 [ 39.685733][ T401] ret_from_fork+0x31/0x70 [ 39.685904][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.686078][ T401] SOFTIRQ-ON-W at: [ 39.686181][ T401] __lock_acquire+0x797/0x1570 [ 39.686352][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.686522][ T401] _raw_spin_lock+0x30/0x40 [ 39.686694][ T401] set_mems_allowed+0x1d/0x210 [ 39.686945][ T401] kernel_init_freeable+0x72/0x310 [ 39.687118][ T401] kernel_init+0x20/0x200 [ 39.687288][ T401] ret_from_fork+0x31/0x70 [ 39.687458][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.687709][ T401] INITIAL USE at: [ 39.687811][ T401] __lock_acquire+0x797/0x1570 [ 39.687987][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.688157][ T401] _raw_spin_lock+0x30/0x40 [ 39.688409][ T401] set_mems_allowed+0x1d/0x210 [ 39.688579][ T401] kernel_init_freeable+0x72/0x310 [ 39.688749][ T401] kernel_init+0x20/0x200 [ 39.689002][ T401] ret_from_fork+0x31/0x70 [ 39.689175][ T401] ret_from_fork_asm+0x1a/0x30 [ 39.689346][ T401] } [ 39.689416][ T401] ... key at: [] __key.387+0x0/0x40 [ 39.689700][ T401] ... acquired at: [ 39.689804][ T401] check_prev_add+0x194/0xce0 [ 39.689945][ T401] validate_chain+0x71d/0x9b0 [ 39.690081][ T401] __lock_acquire+0xaf0/0x1570 [ 39.690295][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.690434][ T401] _raw_spin_lock+0x30/0x40 [ 39.690570][ T401] __get_task_comm+0x27/0x70 [ 39.690706][ T401] ref_tracker_alloc+0x2ee/0x490 [ 39.690927][ T401] netdev_get_by_index+0x5e/0x80 [ 39.691074][ T401] fib6_nh_init+0x3d8/0x15b0 [ 39.691215][ T401] ip6_route_info_create+0xf18/0x17d0 [ 39.691351][ T401] addrconf_f6i_alloc+0x265/0x560 [ 39.691487][ T401] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.691706][ T401] addrconf_join_anycast+0x1c0/0x220 [ 39.691848][ T401] dev_forward_change+0x2a6/0x7b0 [ 39.691985][ T401] addrconf_fixup_forwarding+0x23f/0x460 [ 39.692153][ T401] addrconf_sysctl_forward+0x212/0x2b0 [ 39.692370][ T401] proc_sys_call_handler+0x403/0x5e0 [ 39.692507][ T401] vfs_write+0x9e5/0x10a0 [ 39.692643][ T401] ksys_write+0xf5/0x1e0 [ 39.692782][ T401] do_syscall_64+0xc6/0x1e0 [ 39.692999][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.693167][ T401] [ 39.693236][ T401] [ 39.693236][ T401] stack backtrace: [ 39.693409][ T401] CPU: 3 PID: 401 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.693691][ T401] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.693996][ T401] Call Trace: [ 39.694101][ T401] [ 39.694254][ T401] dump_stack_lvl+0x82/0xd0 [ 39.694396][ T401] print_bad_irq_dependency+0x957/0xd40 [ 39.694532][ T401] ? hlock_class+0x4e/0x130 [ 39.694672][ T401] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.694924][ T401] ? __pfx_usage_skip+0x10/0x10 [ 39.695062][ T401] ? __bfs+0x246/0x650 [ 39.695165][ T401] ? __pfx_usage_match+0x10/0x10 [ 39.695301][ T401] check_irq_usage+0x596/0x850 [ 39.695441][ T401] ? __pfx_check_irq_usage+0x10/0x10 [ 39.695657][ T401] ? __bfs+0x246/0x650 [ 39.695762][ T401] ? __pfx_hlock_conflict+0x10/0x10 [ 39.695903][ T401] ? check_path.constprop.0+0x24/0x50 [ 39.696038][ T401] ? check_noncircular+0x14c/0x3e0 [ 39.696333][ T401] ? __pfx_check_noncircular+0x10/0x10 [ 39.696472][ T401] ? check_prev_add+0x194/0xce0 [ 39.696607][ T401] check_prev_add+0x194/0xce0 [ 39.696745][ T401] ? validate_chain+0x130/0x9b0 [ 39.696887][ T401] validate_chain+0x71d/0x9b0 [ 39.697103][ T401] ? mark_lock+0x38/0x3e0 [ 39.697206][ T401] ? __pfx_validate_chain+0x10/0x10 [ 39.697350][ T401] ? hlock_class+0x4e/0x130 [ 39.697484][ T401] ? mark_lock+0x38/0x3e0 [ 39.697669][ T401] __lock_acquire+0xaf0/0x1570 [ 39.697812][ T401] lock_acquire.part.0+0xeb/0x330 [ 39.697949][ T401] ? __get_task_comm+0x27/0x70 [ 39.698087][ T401] ? mark_lock+0x38/0x3e0 [ 39.698192][ T401] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.698329][ T401] ? trace_lock_acquire+0x135/0x1c0 [ 39.698465][ T401] ? __get_task_comm+0x27/0x70 [ 39.698599][ T401] ? lock_acquire+0x32/0xc0 [ 39.698738][ T401] ? __get_task_comm+0x27/0x70 [ 39.698953][ T401] _raw_spin_lock+0x30/0x40 [ 39.699089][ T401] ? __get_task_comm+0x27/0x70 [ 39.699226][ T401] __get_task_comm+0x27/0x70 [ 39.699364][ T401] ref_tracker_alloc+0x2ee/0x490 [ 39.699582][ T401] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.699721][ T401] ? dev_get_by_index+0x177/0x270 [ 39.699855][ T401] ? netdev_get_by_index+0x5e/0x80 [ 39.699991][ T401] ? fib6_nh_init+0x3d8/0x15b0 [ 39.700127][ T401] ? ip6_route_info_create+0xf18/0x17d0 [ 39.700344][ T401] ? addrconf_f6i_alloc+0x265/0x560 [ 39.700478][ T401] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.700618][ T401] ? addrconf_join_anycast+0x1c0/0x220 [ 39.700754][ T401] ? dev_forward_change+0x2a6/0x7b0 [ 39.700981][ T401] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.701164][ T401] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.701300][ T401] ? proc_sys_call_handler+0x403/0x5e0 [ 39.701435][ T401] ? vfs_write+0x9e5/0x10a0 [ 39.701652][ T401] ? ksys_write+0xf5/0x1e0 [ 39.701790][ T401] ? do_syscall_64+0xc6/0x1e0 [ 39.701924][ T401] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.702092][ T401] ? dev_get_by_index+0x177/0x270 [ 39.702308][ T401] netdev_get_by_index+0x5e/0x80 [ 39.702447][ T401] fib6_nh_init+0x3d8/0x15b0 [ 39.702584][ T401] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.702758][ T401] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.702973][ T401] ? kasan_save_track+0x14/0x30 [ 39.703112][ T401] ? __kasan_kmalloc+0x7f/0x90 [ 39.703252][ T401] ? __kmalloc+0x1d7/0x3c0 [ 39.703389][ T401] ? fib6_get_table+0x116/0x290 [ 39.703607][ T401] ip6_route_info_create+0xf18/0x17d0 [ 39.703742][ T401] ? __lock_release+0x103/0x460 [ 39.703879][ T401] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.704052][ T401] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.704268][ T401] addrconf_f6i_alloc+0x265/0x560 [ 39.704404][ T401] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.704548][ T401] ? do_raw_write_lock+0x122/0x3b0 [ 39.704689][ T401] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.704904][ T401] ? lock_acquire+0x32/0xc0 [ 39.705041][ T401] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.705178][ T401] addrconf_join_anycast+0x1c0/0x220 [ 39.705313][ T401] ? mark_lock+0x38/0x3e0 [ 39.705415][ T401] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.705667][ T401] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.705836][ T401] dev_forward_change+0x2a6/0x7b0 [ 39.705974][ T401] ? __pfx_dev_forward_change+0x10/0x10 [ 39.706112][ T401] addrconf_fixup_forwarding+0x23f/0x460 [ 39.706329][ T401] addrconf_sysctl_forward+0x212/0x2b0 [ 39.706465][ T401] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.706637][ T401] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.706969][ T401] ? trace_kmalloc+0x2a/0xe0 [ 39.707104][ T401] ? __kmalloc_node+0x220/0x400 [ 39.707241][ T401] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.707378][ T401] proc_sys_call_handler+0x403/0x5e0 [ 39.707517][ T401] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.707767][ T401] ? __lock_acquire+0xaf0/0x1570 [ 39.707905][ T401] vfs_write+0x9e5/0x10a0 [ 39.708008][ T401] ? do_user_addr_fault+0x449/0xbe0 [ 39.708147][ T401] ? __pfx_vfs_write+0x10/0x10 [ 39.708361][ T401] ? find_held_lock+0x2c/0x110 [ 39.708498][ T401] ? __pfx___lock_release+0x10/0x10 [ 39.708637][ T401] ? __fget_light+0x53/0x1e0 [ 39.708775][ T401] ksys_write+0xf5/0x1e0 [ 39.708957][ T401] ? __pfx_ksys_write+0x10/0x10 [ 39.709093][ T401] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.709228][ T401] do_syscall_64+0xc6/0x1e0 [ 39.709362][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.709612][ T401] RIP: 0033:0x7f652af25957 [ 39.709756][ T401] 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 [ 39.710317][ T401] RSP: 002b:00007ffc52f455d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.710525][ T401] RAX: ffffffffffffffda RBX: 0000563628995360 RCX: 00007f652af25957 [ 39.710730][ T401] RDX: 0000000000000002 RSI: 00005636289953a0 RDI: 0000000000000005 [ 39.711023][ T401] RBP: 00005636289974d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.711225][ T401] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.711430][ T401] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f652afdc9c0 [ 39.711717][ T401]