[ 27.571761][ T268] ip (268) used greatest stack depth: 23616 bytes left [ 33.430746][ T316] gre: GRE over IPv4 demultiplexor driver [ 33.451995][ T316] ip_gre: GRE over IPv4 tunneling driver [ 33.842474][ T322] ip (322) used greatest stack depth: 23536 bytes left [ 36.053196][ T339] 8021q: 802.1Q VLAN Support v1.8 [ 40.524779][ T377] GACT probability NOT on [ 44.849914][ T414] [ 44.850069][ T414] ===================================================== [ 44.850268][ T414] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 44.850506][ T414] 6.9.0-rc1-virtme #1 Not tainted [ 44.850657][ T414] ----------------------------------------------------- [ 44.850867][ T414] sysctl/414 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 44.851096][ T414] ffff88800592cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 44.851368][ T414] [ 44.851368][ T414] and this task is already holding: [ 44.851616][ T414] ffff888005bfd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 44.851873][ T414] which would create a new lock dependency: [ 44.852079][ T414] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 44.852312][ T414] [ 44.852312][ T414] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 44.852585][ T414] (&ndev->lock){++--}-{2:2} [ 44.852589][ T414] [ 44.852589][ T414] ... which became SOFTIRQ-irq-safe at: [ 44.852980][ T414] __lock_acquire+0x797/0x1570 [ 44.853147][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.853307][ T414] _raw_write_lock+0x30/0x40 [ 44.853485][ T414] addrconf_rs_timer+0xa9/0x730 [ 44.853640][ T414] call_timer_fn+0x13b/0x230 [ 44.853803][ T414] __run_timers+0x545/0x810 [ 44.853959][ T414] run_timer_softirq+0xe8/0x1b0 [ 44.854125][ T414] __do_softirq+0x1f8/0x5df [ 44.854285][ T414] irq_exit_rcu+0x97/0xc0 [ 44.854455][ T414] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.854617][ T414] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.854819][ T414] _raw_spin_unlock_irqrestore+0x43/0x70 [ 44.854990][ T414] debug_object_activate+0x3ce/0x4f0 [ 44.855143][ T414] __call_rcu_common.constprop.0+0x31/0x830 [ 44.855342][ T414] kmem_cache_free+0x1ac/0x220 [ 44.855506][ T414] exit_mmap+0x38e/0x7d0 [ 44.855620][ T414] __mmput+0x76/0x3b0 [ 44.855735][ T414] exit_mm+0x146/0x1d0 [ 44.855856][ T414] do_exit+0x6b6/0xcf0 [ 44.855979][ T414] do_group_exit+0xb8/0x260 [ 44.856144][ T414] __x64_sys_exit_group+0x3e/0x50 [ 44.856300][ T414] do_syscall_64+0xc6/0x1e0 [ 44.856460][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.856650][ T414] [ 44.856650][ T414] to a SOFTIRQ-irq-unsafe lock: [ 44.856838][ T414] (&p->alloc_lock){+.+.}-{2:2} [ 44.856842][ T414] [ 44.856842][ T414] ... which became SOFTIRQ-irq-unsafe at: [ 44.857216][ T414] ... [ 44.857217][ T414] __lock_acquire+0x797/0x1570 [ 44.857450][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.857605][ T414] _raw_spin_lock+0x30/0x40 [ 44.857761][ T414] set_mems_allowed+0x1d/0x210 [ 44.857916][ T414] kernel_init_freeable+0x72/0x310 [ 44.858074][ T414] kernel_init+0x20/0x200 [ 44.858236][ T414] ret_from_fork+0x31/0x70 [ 44.858395][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.858546][ T414] [ 44.858546][ T414] other info that might help us debug this: [ 44.858546][ T414] [ 44.858854][ T414] Possible interrupt unsafe locking scenario: [ 44.858854][ T414] [ 44.859084][ T414] CPU0 CPU1 [ 44.859235][ T414] ---- ---- [ 44.859384][ T414] lock(&p->alloc_lock); [ 44.859502][ T414] local_irq_disable(); [ 44.859700][ T414] lock(&ndev->lock); [ 44.859895][ T414] lock(&p->alloc_lock); [ 44.860088][ T414] [ 44.860207][ T414] lock(&ndev->lock); [ 44.860326][ T414] [ 44.860326][ T414] *** DEADLOCK *** [ 44.860326][ T414] [ 44.860552][ T414] 3 locks held by sysctl/414: [ 44.860702][ T414] #0: ffff888005fbc3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 44.861009][ T414] #1: ffffffff967969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 44.861331][ T414] #2: ffff888005bfd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 44.861608][ T414] [ 44.861608][ T414] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 44.861909][ T414] -> (&ndev->lock){++--}-{2:2} { [ 44.862074][ T414] HARDIRQ-ON-W at: [ 44.862192][ T414] __lock_acquire+0x797/0x1570 [ 44.862398][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.862598][ T414] _raw_write_lock_bh+0x38/0x50 [ 44.862797][ T414] addrconf_permanent_addr+0x6e/0x670 [ 44.862996][ T414] addrconf_notify+0x749/0xd60 [ 44.863190][ T414] notifier_call_chain+0xcd/0x150 [ 44.863392][ T414] __dev_notify_flags+0xe6/0x250 [ 44.863594][ T414] dev_change_flags+0xec/0x160 [ 44.863789][ T414] do_setlink+0x7d6/0x21e0 [ 44.863988][ T414] __rtnl_newlink+0xaa7/0xd80 [ 44.864183][ T414] rtnl_newlink+0x63/0xa0 [ 44.864382][ T414] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.864574][ T414] netlink_rcv_skb+0x130/0x360 [ 44.864783][ T414] netlink_unicast+0x449/0x710 [ 44.864981][ T414] netlink_sendmsg+0x723/0xbe0 [ 44.865181][ T414] ____sys_sendmsg+0x7b2/0xa10 [ 44.865377][ T414] ___sys_sendmsg+0xee/0x170 [ 44.865578][ T414] __sys_sendmsg+0xcd/0x170 [ 44.865775][ T414] do_syscall_64+0xc6/0x1e0 [ 44.865977][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.866221][ T414] HARDIRQ-ON-R at: [ 44.866343][ T414] __lock_acquire+0x797/0x1570 [ 44.866542][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.866732][ T414] _raw_read_lock_bh+0x44/0x80 [ 44.866929][ T414] inet6_fill_ifla6_attrs+0x516/0x740 [ 44.867121][ T414] inet6_fill_link_af+0x5e/0xe0 [ 44.867316][ T414] rtnl_fill_ifinfo+0x1612/0x29e0 [ 44.867504][ T414] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 44.867694][ T414] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 44.867919][ T414] rtmsg_ifinfo+0x5b/0xa0 [ 44.868109][ T414] register_netdevice+0x1177/0x1690 [ 44.868314][ T414] register_netdev+0x20/0x40 [ 44.868514][ T414] sit_init_net+0x250/0x4f0 [ 44.868709][ T414] ops_init+0x9b/0x560 [ 44.868859][ T414] register_pernet_operations+0x2db/0x710 [ 44.869099][ T414] register_pernet_device+0x2a/0x60 [ 44.869292][ T414] sit_init+0x23/0xe0 [ 44.869454][ T414] do_one_initcall+0x8d/0x1e0 [ 44.869669][ T414] do_initcalls+0x1b2/0x3e0 [ 44.869883][ T414] kernel_init_freeable+0x232/0x310 [ 44.870091][ T414] kernel_init+0x20/0x200 [ 44.870300][ T414] ret_from_fork+0x31/0x70 [ 44.870502][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.870706][ T414] IN-SOFTIRQ-W at: [ 44.870826][ T414] __lock_acquire+0x797/0x1570 [ 44.871075][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.871332][ T414] _raw_write_lock+0x30/0x40 [ 44.871525][ T414] addrconf_rs_timer+0xa9/0x730 [ 44.871718][ T414] call_timer_fn+0x13b/0x230 [ 44.871911][ T414] __run_timers+0x545/0x810 [ 44.872107][ T414] run_timer_softirq+0xe8/0x1b0 [ 44.872299][ T414] __do_softirq+0x1f8/0x5df [ 44.872495][ T414] irq_exit_rcu+0x97/0xc0 [ 44.872685][ T414] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.872913][ T414] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.873153][ T414] _raw_spin_unlock_irqrestore+0x43/0x70 [ 44.873382][ T414] debug_object_activate+0x3ce/0x4f0 [ 44.873572][ T414] __call_rcu_common.constprop.0+0x31/0x830 [ 44.873807][ T414] kmem_cache_free+0x1ac/0x220 [ 44.874004][ T414] exit_mmap+0x38e/0x7d0 [ 44.874213][ T414] __mmput+0x76/0x3b0 [ 44.874376][ T414] exit_mm+0x146/0x1d0 [ 44.874532][ T414] do_exit+0x6b6/0xcf0 [ 44.874695][ T414] do_group_exit+0xb8/0x260 [ 44.874890][ T414] __x64_sys_exit_group+0x3e/0x50 [ 44.875102][ T414] do_syscall_64+0xc6/0x1e0 [ 44.875293][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.875518][ T414] IN-SOFTIRQ-R at: [ 44.875635][ T414] __lock_acquire+0x797/0x1570 [ 44.875828][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.876023][ T414] _raw_read_lock_bh+0x44/0x80 [ 44.876222][ T414] ipv6_get_lladdr+0xa9/0x3e0 [ 44.876416][ T414] addrconf_rs_timer+0x24a/0x730 [ 44.876607][ T414] call_timer_fn+0x13b/0x230 [ 44.876796][ T414] __run_timers+0x545/0x810 [ 44.876985][ T414] run_timer_softirq+0xe8/0x1b0 [ 44.877176][ T414] __do_softirq+0x1f8/0x5df [ 44.877349][ T414] irq_exit_rcu+0x97/0xc0 [ 44.877583][ T414] sysvec_apic_timer_interrupt+0x75/0x80 [ 44.877789][ T414] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 44.878015][ T414] _raw_spin_unlock_irqrestore+0x43/0x70 [ 44.878226][ T414] debug_object_activate+0x3ce/0x4f0 [ 44.878403][ T414] __call_rcu_common.constprop.0+0x31/0x830 [ 44.878612][ T414] kmem_cache_free+0x1ac/0x220 [ 44.878792][ T414] exit_mmap+0x38e/0x7d0 [ 44.878990][ T414] __mmput+0x76/0x3b0 [ 44.879196][ T414] exit_mm+0x146/0x1d0 [ 44.879337][ T414] do_exit+0x6b6/0xcf0 [ 44.879483][ T414] do_group_exit+0xb8/0x260 [ 44.879663][ T414] __x64_sys_exit_group+0x3e/0x50 [ 44.879841][ T414] do_syscall_64+0xc6/0x1e0 [ 44.880022][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.880231][ T414] INITIAL USE at: [ 44.880340][ T414] __lock_acquire+0x797/0x1570 [ 44.880512][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.880685][ T414] _raw_write_lock_bh+0x38/0x50 [ 44.880863][ T414] addrconf_permanent_addr+0x6e/0x670 [ 44.881057][ T414] addrconf_notify+0x749/0xd60 [ 44.881236][ T414] notifier_call_chain+0xcd/0x150 [ 44.881410][ T414] __dev_notify_flags+0xe6/0x250 [ 44.881582][ T414] dev_change_flags+0xec/0x160 [ 44.881755][ T414] do_setlink+0x7d6/0x21e0 [ 44.881926][ T414] __rtnl_newlink+0xaa7/0xd80 [ 44.882106][ T414] rtnl_newlink+0x63/0xa0 [ 44.882277][ T414] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 44.882450][ T414] netlink_rcv_skb+0x130/0x360 [ 44.882641][ T414] netlink_unicast+0x449/0x710 [ 44.882816][ T414] netlink_sendmsg+0x723/0xbe0 [ 44.882991][ T414] ____sys_sendmsg+0x7b2/0xa10 [ 44.883172][ T414] ___sys_sendmsg+0xee/0x170 [ 44.883360][ T414] __sys_sendmsg+0xcd/0x170 [ 44.883544][ T414] do_syscall_64+0xc6/0x1e0 [ 44.883726][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.883938][ T414] INITIAL READ USE at: [ 44.884041][ T414] __lock_acquire+0x797/0x1570 [ 44.884219][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.884396][ T414] _raw_read_lock_bh+0x44/0x80 [ 44.884582][ T414] inet6_fill_ifla6_attrs+0x516/0x740 [ 44.884800][ T414] inet6_fill_link_af+0x5e/0xe0 [ 44.884977][ T414] rtnl_fill_ifinfo+0x1612/0x29e0 [ 44.885161][ T414] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 44.885372][ T414] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 44.885593][ T414] rtmsg_ifinfo+0x5b/0xa0 [ 44.885773][ T414] register_netdevice+0x1177/0x1690 [ 44.885983][ T414] register_netdev+0x20/0x40 [ 44.886165][ T414] sit_init_net+0x250/0x4f0 [ 44.886349][ T414] ops_init+0x9b/0x560 [ 44.886536][ T414] register_pernet_operations+0x2db/0x710 [ 44.886753][ T414] register_pernet_device+0x2a/0x60 [ 44.886975][ T414] sit_init+0x23/0xe0 [ 44.887147][ T414] do_one_initcall+0x8d/0x1e0 [ 44.887329][ T414] do_initcalls+0x1b2/0x3e0 [ 44.887505][ T414] kernel_init_freeable+0x232/0x310 [ 44.887814][ T414] kernel_init+0x20/0x200 [ 44.888002][ T414] ret_from_fork+0x31/0x70 [ 44.888186][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.888537][ T414] } [ 44.888609][ T414] ... key at: [] __key.37+0x0/0x40 [ 44.888816][ T414] [ 44.888816][ T414] the dependencies between the lock to be acquired [ 44.888818][ T414] and SOFTIRQ-irq-unsafe lock: [ 44.889271][ T414] -> (&p->alloc_lock){+.+.}-{2:2} { [ 44.889423][ T414] HARDIRQ-ON-W at: [ 44.889533][ T414] __lock_acquire+0x797/0x1570 [ 44.889800][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.889985][ T414] _raw_spin_lock+0x30/0x40 [ 44.890175][ T414] set_mems_allowed+0x1d/0x210 [ 44.890350][ T414] kernel_init_freeable+0x72/0x310 [ 44.890643][ T414] kernel_init+0x20/0x200 [ 44.890827][ T414] ret_from_fork+0x31/0x70 [ 44.891050][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.891312][ T414] SOFTIRQ-ON-W at: [ 44.891423][ T414] __lock_acquire+0x797/0x1570 [ 44.891613][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.891812][ T414] _raw_spin_lock+0x30/0x40 [ 44.892077][ T414] set_mems_allowed+0x1d/0x210 [ 44.892252][ T414] kernel_init_freeable+0x72/0x310 [ 44.892443][ T414] kernel_init+0x20/0x200 [ 44.892706][ T414] ret_from_fork+0x31/0x70 [ 44.892887][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.893066][ T414] INITIAL USE at: [ 44.893176][ T414] __lock_acquire+0x797/0x1570 [ 44.893438][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.893622][ T414] _raw_spin_lock+0x30/0x40 [ 44.893799][ T414] set_mems_allowed+0x1d/0x210 [ 44.893977][ T414] kernel_init_freeable+0x72/0x310 [ 44.894262][ T414] kernel_init+0x20/0x200 [ 44.894440][ T414] ret_from_fork+0x31/0x70 [ 44.894616][ T414] ret_from_fork_asm+0x1a/0x30 [ 44.894892][ T414] } [ 44.894963][ T414] ... key at: [] __key.387+0x0/0x40 [ 44.895191][ T414] ... acquired at: [ 44.895298][ T414] check_prev_add+0x194/0xce0 [ 44.895445][ T414] validate_chain+0x71d/0x9b0 [ 44.895669][ T414] __lock_acquire+0xaf0/0x1570 [ 44.895829][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.895986][ T414] _raw_spin_lock+0x30/0x40 [ 44.896130][ T414] __get_task_comm+0x27/0x70 [ 44.896365][ T414] ref_tracker_alloc+0x2ee/0x490 [ 44.896540][ T414] netdev_get_by_index+0x5e/0x80 [ 44.896696][ T414] fib6_nh_init+0x3d8/0x15b0 [ 44.896864][ T414] ip6_route_info_create+0xf18/0x17d0 [ 44.897117][ T414] addrconf_f6i_alloc+0x265/0x560 [ 44.897255][ T414] __ipv6_dev_ac_inc+0x25f/0xb10 [ 44.897405][ T414] addrconf_join_anycast+0x1c0/0x220 [ 44.897560][ T414] dev_forward_change+0x2a6/0x7b0 [ 44.897787][ T414] addrconf_fixup_forwarding+0x23f/0x460 [ 44.897963][ T414] addrconf_sysctl_forward+0x212/0x2b0 [ 44.898102][ T414] proc_sys_call_handler+0x403/0x5e0 [ 44.898246][ T414] vfs_write+0x9e5/0x10a0 [ 44.898470][ T414] ksys_write+0xf5/0x1e0 [ 44.898634][ T414] do_syscall_64+0xc6/0x1e0 [ 44.898783][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.898972][ T414] [ 44.899052][ T414] [ 44.899052][ T414] stack backtrace: [ 44.899338][ T414] CPU: 1 PID: 414 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 44.899557][ T414] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 44.899973][ T414] Call Trace: [ 44.900080][ T414] [ 44.900151][ T414] dump_stack_lvl+0x82/0xd0 [ 44.900299][ T414] print_bad_irq_dependency+0x957/0xd40 [ 44.900437][ T414] ? hlock_class+0x4e/0x130 [ 44.900578][ T414] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 44.900751][ T414] ? __pfx_usage_skip+0x10/0x10 [ 44.900897][ T414] ? __bfs+0x246/0x650 [ 44.901018][ T414] ? __pfx_usage_match+0x10/0x10 [ 44.901158][ T414] check_irq_usage+0x596/0x850 [ 44.901303][ T414] ? __pfx_check_irq_usage+0x10/0x10 [ 44.901446][ T414] ? __bfs+0x246/0x650 [ 44.901549][ T414] ? __pfx_hlock_conflict+0x10/0x10 [ 44.901688][ T414] ? check_path.constprop.0+0x24/0x50 [ 44.901911][ T414] ? check_noncircular+0x14c/0x3e0 [ 44.902049][ T414] ? __pfx_check_noncircular+0x10/0x10 [ 44.902194][ T414] ? check_prev_add+0x194/0xce0 [ 44.902335][ T414] check_prev_add+0x194/0xce0 [ 44.902556][ T414] ? validate_chain+0x130/0x9b0 [ 44.902697][ T414] validate_chain+0x71d/0x9b0 [ 44.902843][ T414] ? mark_lock+0x38/0x3e0 [ 44.902951][ T414] ? __pfx_validate_chain+0x10/0x10 [ 44.903198][ T414] ? hlock_class+0x4e/0x130 [ 44.903347][ T414] ? mark_lock+0x38/0x3e0 [ 44.903452][ T414] __lock_acquire+0xaf0/0x1570 [ 44.903591][ T414] lock_acquire.part.0+0xeb/0x330 [ 44.903727][ T414] ? __get_task_comm+0x27/0x70 [ 44.903877][ T414] ? mark_lock+0x38/0x3e0 [ 44.903988][ T414] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 44.904128][ T414] ? trace_lock_acquire+0x135/0x1c0 [ 44.904269][ T414] ? __get_task_comm+0x27/0x70 [ 44.904486][ T414] ? lock_acquire+0x32/0xc0 [ 44.904636][ T414] ? __get_task_comm+0x27/0x70 [ 44.904777][ T414] _raw_spin_lock+0x30/0x40 [ 44.904913][ T414] ? __get_task_comm+0x27/0x70 [ 44.905048][ T414] __get_task_comm+0x27/0x70 [ 44.905269][ T414] ref_tracker_alloc+0x2ee/0x490 [ 44.905410][ T414] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 44.905570][ T414] ? dev_get_by_index+0x177/0x270 [ 44.905709][ T414] ? netdev_get_by_index+0x5e/0x80 [ 44.905949][ T414] ? fib6_nh_init+0x3d8/0x15b0 [ 44.906090][ T414] ? ip6_route_info_create+0xf18/0x17d0 [ 44.906226][ T414] ? addrconf_f6i_alloc+0x265/0x560 [ 44.906369][ T414] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 44.906511][ T414] ? addrconf_join_anycast+0x1c0/0x220 [ 44.906665][ T414] ? dev_forward_change+0x2a6/0x7b0 [ 44.906813][ T414] ? addrconf_fixup_forwarding+0x23f/0x460 [ 44.906990][ T414] ? addrconf_sysctl_forward+0x212/0x2b0 [ 44.907153][ T414] ? proc_sys_call_handler+0x403/0x5e0 [ 44.907294][ T414] ? vfs_write+0x9e5/0x10a0 [ 44.907430][ T414] ? ksys_write+0xf5/0x1e0 [ 44.907566][ T414] ? do_syscall_64+0xc6/0x1e0 [ 44.907792][ T414] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.907970][ T414] ? dev_get_by_index+0x177/0x270 [ 44.908110][ T414] netdev_get_by_index+0x5e/0x80 [ 44.908252][ T414] fib6_nh_init+0x3d8/0x15b0 [ 44.908474][ T414] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 44.908655][ T414] ? __pfx_fib6_nh_init+0x10/0x10 [ 44.908791][ T414] ? kasan_save_track+0x14/0x30 [ 44.908931][ T414] ? __kasan_kmalloc+0x7f/0x90 [ 44.909153][ T414] ? __kmalloc+0x1d7/0x3c0 [ 44.909301][ T414] ? fib6_get_table+0x116/0x290 [ 44.909439][ T414] ip6_route_info_create+0xf18/0x17d0 [ 44.909584][ T414] ? __lock_release+0x103/0x460 [ 44.909735][ T414] ? __pfx_ip6_route_info_create+0x10/0x10 [ 44.909998][ T414] ? addrconf_f6i_alloc+0x12d/0x560 [ 44.910150][ T414] addrconf_f6i_alloc+0x265/0x560 [ 44.910298][ T414] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 44.910449][ T414] ? do_raw_write_lock+0x122/0x3b0 [ 44.910595][ T414] ? __pfx_do_raw_write_lock+0x10/0x10 [ 44.910732][ T414] ? lock_acquire+0x32/0xc0 [ 44.910877][ T414] __ipv6_dev_ac_inc+0x25f/0xb10 [ 44.911035][ T414] addrconf_join_anycast+0x1c0/0x220 [ 44.911286][ T414] ? mark_lock+0x38/0x3e0 [ 44.911401][ T414] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 44.911603][ T414] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 44.911793][ T414] dev_forward_change+0x2a6/0x7b0 [ 44.912023][ T414] ? __pfx_dev_forward_change+0x10/0x10 [ 44.912166][ T414] addrconf_fixup_forwarding+0x23f/0x460 [ 44.912314][ T414] addrconf_sysctl_forward+0x212/0x2b0 [ 44.912453][ T414] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 44.912711][ T414] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 44.912894][ T414] ? trace_kmalloc+0x2a/0xe0 [ 44.913047][ T414] ? __kmalloc_node+0x220/0x400 [ 44.913189][ T414] ? proc_sys_call_handler+0x30b/0x5e0 [ 44.913426][ T414] proc_sys_call_handler+0x403/0x5e0 [ 44.913569][ T414] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 44.913739][ T414] ? __lock_acquire+0xaf0/0x1570 [ 44.913882][ T414] vfs_write+0x9e5/0x10a0 [ 44.914076][ T414] ? do_user_addr_fault+0x449/0xbe0 [ 44.914214][ T414] ? __pfx_vfs_write+0x10/0x10 [ 44.914357][ T414] ? find_held_lock+0x2c/0x110 [ 44.914507][ T414] ? __pfx___lock_release+0x10/0x10 [ 44.914732][ T414] ? __fget_light+0x53/0x1e0 [ 44.914870][ T414] ksys_write+0xf5/0x1e0 [ 44.914978][ T414] ? __pfx_ksys_write+0x10/0x10 [ 44.915135][ T414] ? do_user_addr_fault+0x4bd/0xbe0 [ 44.915277][ T414] do_syscall_64+0xc6/0x1e0 [ 44.915501][ T414] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 44.915674][ T414] RIP: 0033:0x7f4f5bffd957 [ 44.915831][ T414] 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 [ 44.916416][ T414] RSP: 002b:00007ffdb3af9fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 44.916631][ T414] RAX: ffffffffffffffda RBX: 0000564ad3cf8360 RCX: 00007f4f5bffd957 [ 44.916934][ T414] RDX: 0000000000000002 RSI: 0000564ad3cf83a0 RDI: 0000000000000005 [ 44.917149][ T414] RBP: 0000564ad3cfa4d0 R08: 0000000000000003 R09: 0000000000000077 [ 44.917360][ T414] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 44.917570][ T414] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f4f5c0b49c0 [ 44.917786][ T414] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr