[ 25.009064][ T246] ip (246) used greatest stack depth: 23488 bytes left [ 30.614643][ T310] gre: GRE over IPv4 demultiplexor driver [ 30.628845][ T310] ip_gre: GRE over IPv4 tunneling driver [ 32.850272][ T332] 8021q: 802.1Q VLAN Support v1.8 [ 36.889759][ T370] GACT probability NOT on [ 40.627259][ T403] [ 40.627450][ T403] ===================================================== [ 40.627636][ T403] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.627852][ T403] 6.9.0-rc1-virtme #1 Not tainted [ 40.627987][ T403] ----------------------------------------------------- [ 40.628157][ T403] sysctl/403 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.628358][ T403] ffff8880088f8968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.628608][ T403] [ 40.628608][ T403] and this task is already holding: [ 40.628818][ T403] ffff88800694d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.629069][ T403] which would create a new lock dependency: [ 40.629235][ T403] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.629445][ T403] [ 40.629445][ T403] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.629676][ T403] (&ndev->lock){++--}-{2:2} [ 40.629680][ T403] [ 40.629680][ T403] ... which became SOFTIRQ-irq-safe at: [ 40.630013][ T403] __lock_acquire+0x797/0x1570 [ 40.630168][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.630303][ T403] _raw_write_lock+0x30/0x40 [ 40.630444][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.630580][ T403] call_timer_fn+0x13b/0x230 [ 40.630720][ T403] __run_timers+0x545/0x810 [ 40.630856][ T403] timer_expire_remote+0x9b/0xe0 [ 40.630993][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.631139][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.631273][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.631409][ T403] __do_softirq+0x1f8/0x5df [ 40.631542][ T403] irq_exit_rcu+0x97/0xc0 [ 40.631681][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.631819][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.631989][ T403] default_idle+0xf/0x20 [ 40.632094][ T403] default_idle_call+0x6d/0xb0 [ 40.632235][ T403] cpuidle_idle_call+0x1f4/0x280 [ 40.632372][ T403] do_idle+0xf9/0x160 [ 40.632474][ T403] cpu_startup_entry+0x54/0x60 [ 40.632610][ T403] start_secondary+0x21c/0x2b0 [ 40.632750][ T403] common_startup_64+0x12c/0x138 [ 40.632889][ T403] [ 40.632889][ T403] to a SOFTIRQ-irq-unsafe lock: [ 40.633058][ T403] (&p->alloc_lock){+.+.}-{2:2} [ 40.633062][ T403] [ 40.633062][ T403] ... which became SOFTIRQ-irq-unsafe at: [ 40.633404][ T403] ... [ 40.633406][ T403] __lock_acquire+0x797/0x1570 [ 40.633615][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.633750][ T403] _raw_spin_lock+0x30/0x40 [ 40.633888][ T403] set_mems_allowed+0x1d/0x210 [ 40.634030][ T403] kernel_init_freeable+0x72/0x310 [ 40.634171][ T403] kernel_init+0x20/0x200 [ 40.634307][ T403] ret_from_fork+0x31/0x70 [ 40.634444][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.634587][ T403] [ 40.634587][ T403] other info that might help us debug this: [ 40.634587][ T403] [ 40.634852][ T403] Possible interrupt unsafe locking scenario: [ 40.634852][ T403] [ 40.635061][ T403] CPU0 CPU1 [ 40.635199][ T403] ---- ---- [ 40.635334][ T403] lock(&p->alloc_lock); [ 40.635441][ T403] local_irq_disable(); [ 40.635612][ T403] lock(&ndev->lock); [ 40.635786][ T403] lock(&p->alloc_lock); [ 40.635961][ T403] [ 40.636073][ T403] lock(&ndev->lock); [ 40.636179][ T403] [ 40.636179][ T403] *** DEADLOCK *** [ 40.636179][ T403] [ 40.636380][ T403] 3 locks held by sysctl/403: [ 40.636520][ T403] #0: ffff888005e793f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.636774][ T403] #1: ffffffff89f969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.637064][ T403] #2: ffff88800694d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.637310][ T403] [ 40.637310][ T403] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.637577][ T403] -> (&ndev->lock){++--}-{2:2} { [ 40.637721][ T403] HARDIRQ-ON-W at: [ 40.637833][ T403] __lock_acquire+0x797/0x1570 [ 40.638009][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.638186][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.638358][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.638530][ T403] addrconf_notify+0x749/0xd60 [ 40.638723][ T403] notifier_call_chain+0xcd/0x150 [ 40.638901][ T403] __dev_notify_flags+0xe6/0x250 [ 40.639075][ T403] dev_change_flags+0xec/0x160 [ 40.639244][ T403] do_setlink+0x7d6/0x21e0 [ 40.639423][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.639595][ T403] rtnl_newlink+0x63/0xa0 [ 40.639776][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.639954][ T403] netlink_rcv_skb+0x130/0x360 [ 40.640135][ T403] netlink_unicast+0x449/0x710 [ 40.640306][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.640478][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.640657][ T403] ___sys_sendmsg+0xee/0x170 [ 40.640831][ T403] __sys_sendmsg+0xcd/0x170 [ 40.641005][ T403] do_syscall_64+0xc6/0x1e0 [ 40.641191][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.641403][ T403] HARDIRQ-ON-R at: [ 40.641513][ T403] __lock_acquire+0x797/0x1570 [ 40.641687][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.641861][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.642037][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.642215][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.642393][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.642567][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.642740][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.642955][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.643127][ T403] register_netdevice+0x1177/0x1690 [ 40.643305][ T403] register_netdev+0x20/0x40 [ 40.643485][ T403] sit_init_net+0x250/0x4f0 [ 40.643665][ T403] ops_init+0x9b/0x560 [ 40.643812][ T403] register_pernet_operations+0x2db/0x710 [ 40.644017][ T403] register_pernet_device+0x2a/0x60 [ 40.644196][ T403] sit_init+0x23/0xe0 [ 40.644336][ T403] do_one_initcall+0x8d/0x1e0 [ 40.644515][ T403] do_initcalls+0x1b2/0x3e0 [ 40.644691][ T403] kernel_init_freeable+0x232/0x310 [ 40.644870][ T403] kernel_init+0x20/0x200 [ 40.645043][ T403] ret_from_fork+0x31/0x70 [ 40.645216][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.645387][ T403] IN-SOFTIRQ-W at: [ 40.645490][ T403] __lock_acquire+0x797/0x1570 [ 40.645664][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.645846][ T403] _raw_write_lock+0x30/0x40 [ 40.646019][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.646202][ T403] call_timer_fn+0x13b/0x230 [ 40.646377][ T403] __run_timers+0x545/0x810 [ 40.646553][ T403] timer_expire_remote+0x9b/0xe0 [ 40.646728][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.646911][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.647085][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.647258][ T403] __do_softirq+0x1f8/0x5df [ 40.647446][ T403] irq_exit_rcu+0x97/0xc0 [ 40.647621][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.647833][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.648043][ T403] default_idle+0xf/0x20 [ 40.648220][ T403] default_idle_call+0x6d/0xb0 [ 40.648399][ T403] cpuidle_idle_call+0x1f4/0x280 [ 40.648581][ T403] do_idle+0xf9/0x160 [ 40.648719][ T403] cpu_startup_entry+0x54/0x60 [ 40.648896][ T403] start_secondary+0x21c/0x2b0 [ 40.649075][ T403] common_startup_64+0x12c/0x138 [ 40.649249][ T403] IN-SOFTIRQ-R at: [ 40.649353][ T403] __lock_acquire+0x797/0x1570 [ 40.649530][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.649712][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.649887][ T403] ipv6_get_lladdr+0xa9/0x3e0 [ 40.650065][ T403] addrconf_rs_timer+0x24a/0x730 [ 40.650328][ T403] call_timer_fn+0x13b/0x230 [ 40.650504][ T403] __run_timers+0x545/0x810 [ 40.650686][ T403] timer_expire_remote+0x9b/0xe0 [ 40.650951][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.651124][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.651299][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.651470][ T403] __do_softirq+0x1f8/0x5df [ 40.651722][ T403] irq_exit_rcu+0x97/0xc0 [ 40.651894][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.652097][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.652467][ T403] default_idle+0xf/0x20 [ 40.652643][ T403] default_idle_call+0x6d/0xb0 [ 40.652814][ T403] cpuidle_idle_call+0x1f4/0x280 [ 40.653071][ T403] do_idle+0xf9/0x160 [ 40.653208][ T403] cpu_startup_entry+0x54/0x60 [ 40.653384][ T403] start_secondary+0x21c/0x2b0 [ 40.653558][ T403] common_startup_64+0x12c/0x138 [ 40.653815][ T403] INITIAL USE at: [ 40.653924][ T403] __lock_acquire+0x797/0x1570 [ 40.654096][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.654269][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.654524][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.654698][ T403] addrconf_notify+0x749/0xd60 [ 40.654871][ T403] notifier_call_chain+0xcd/0x150 [ 40.655129][ T403] __dev_notify_flags+0xe6/0x250 [ 40.655302][ T403] dev_change_flags+0xec/0x160 [ 40.655474][ T403] do_setlink+0x7d6/0x21e0 [ 40.655728][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.655902][ T403] rtnl_newlink+0x63/0xa0 [ 40.656086][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.656259][ T403] netlink_rcv_skb+0x130/0x360 [ 40.656523][ T403] netlink_unicast+0x449/0x710 [ 40.656694][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.656866][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.657121][ T403] ___sys_sendmsg+0xee/0x170 [ 40.657303][ T403] __sys_sendmsg+0xcd/0x170 [ 40.657480][ T403] do_syscall_64+0xc6/0x1e0 [ 40.657653][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.657943][ T403] INITIAL READ USE at: [ 40.658047][ T403] __lock_acquire+0x797/0x1570 [ 40.658219][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.658472][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.658644][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.658852][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.659111][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.659291][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.659495][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.659781][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.659952][ T403] register_netdevice+0x1177/0x1690 [ 40.660166][ T403] register_netdev+0x20/0x40 [ 40.660340][ T403] sit_init_net+0x250/0x4f0 [ 40.660605][ T403] ops_init+0x9b/0x560 [ 40.660774][ T403] register_pernet_operations+0x2db/0x710 [ 40.660983][ T403] register_pernet_device+0x2a/0x60 [ 40.661270][ T403] sit_init+0x23/0xe0 [ 40.661445][ T403] do_one_initcall+0x8d/0x1e0 [ 40.661629][ T403] do_initcalls+0x1b2/0x3e0 [ 40.661885][ T403] kernel_init_freeable+0x232/0x310 [ 40.662095][ T403] kernel_init+0x20/0x200 [ 40.662272][ T403] ret_from_fork+0x31/0x70 [ 40.662528][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.662703][ T403] } [ 40.662780][ T403] ... key at: [] __key.37+0x0/0x40 [ 40.662990][ T403] [ 40.662990][ T403] the dependencies between the lock to be acquired [ 40.662991][ T403] and SOFTIRQ-irq-unsafe lock: [ 40.663511][ T403] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.663655][ T403] HARDIRQ-ON-W at: [ 40.663764][ T403] __lock_acquire+0x797/0x1570 [ 40.664027][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.664203][ T403] _raw_spin_lock+0x30/0x40 [ 40.664375][ T403] set_mems_allowed+0x1d/0x210 [ 40.664629][ T403] kernel_init_freeable+0x72/0x310 [ 40.664805][ T403] kernel_init+0x20/0x200 [ 40.664983][ T403] ret_from_fork+0x31/0x70 [ 40.665160][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.665416][ T403] SOFTIRQ-ON-W at: [ 40.665525][ T403] __lock_acquire+0x797/0x1570 [ 40.665697][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.665950][ T403] _raw_spin_lock+0x30/0x40 [ 40.666133][ T403] set_mems_allowed+0x1d/0x210 [ 40.666315][ T403] kernel_init_freeable+0x72/0x310 [ 40.666485][ T403] kernel_init+0x20/0x200 [ 40.666741][ T403] ret_from_fork+0x31/0x70 [ 40.666912][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.667084][ T403] INITIAL USE at: [ 40.667189][ T403] __lock_acquire+0x797/0x1570 [ 40.667441][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.667613][ T403] _raw_spin_lock+0x30/0x40 [ 40.667787][ T403] set_mems_allowed+0x1d/0x210 [ 40.668054][ T403] kernel_init_freeable+0x72/0x310 [ 40.668228][ T403] kernel_init+0x20/0x200 [ 40.668398][ T403] ret_from_fork+0x31/0x70 [ 40.668650][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.668821][ T403] } [ 40.668909][ T403] ... key at: [] __key.387+0x0/0x40 [ 40.669117][ T403] ... acquired at: [ 40.669223][ T403] check_prev_add+0x194/0xce0 [ 40.669454][ T403] validate_chain+0x71d/0x9b0 [ 40.669603][ T403] __lock_acquire+0xaf0/0x1570 [ 40.669741][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.669878][ T403] _raw_spin_lock+0x30/0x40 [ 40.670096][ T403] __get_task_comm+0x27/0x70 [ 40.670242][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.670380][ T403] netdev_get_by_index+0x5e/0x80 [ 40.670524][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.670753][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.670889][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.671026][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.671164][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.671385][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.671524][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.671695][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.671852][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.672072][ T403] vfs_write+0x9e5/0x10a0 [ 40.672211][ T403] ksys_write+0xf5/0x1e0 [ 40.672347][ T403] do_syscall_64+0xc6/0x1e0 [ 40.672482][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.672735][ T403] [ 40.672808][ T403] [ 40.672808][ T403] stack backtrace: [ 40.672981][ T403] CPU: 2 PID: 403 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.673195][ T403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.673584][ T403] Call Trace: [ 40.673692][ T403] [ 40.673771][ T403] dump_stack_lvl+0x82/0xd0 [ 40.673915][ T403] print_bad_irq_dependency+0x957/0xd40 [ 40.674217][ T403] ? hlock_class+0x4e/0x130 [ 40.674359][ T403] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.674534][ T403] ? __pfx_usage_skip+0x10/0x10 [ 40.674669][ T403] ? __bfs+0x246/0x650 [ 40.674856][ T403] ? __pfx_usage_match+0x10/0x10 [ 40.674991][ T403] check_irq_usage+0x596/0x850 [ 40.675131][ T403] ? __pfx_check_irq_usage+0x10/0x10 [ 40.675267][ T403] ? __bfs+0x246/0x650 [ 40.675371][ T403] ? __pfx_hlock_conflict+0x10/0x10 [ 40.675589][ T403] ? check_path.constprop.0+0x24/0x50 [ 40.675728][ T403] ? check_noncircular+0x14c/0x3e0 [ 40.675865][ T403] ? __pfx_check_noncircular+0x10/0x10 [ 40.676007][ T403] ? check_prev_add+0x194/0xce0 [ 40.676239][ T403] check_prev_add+0x194/0xce0 [ 40.676375][ T403] ? validate_chain+0x130/0x9b0 [ 40.676512][ T403] validate_chain+0x71d/0x9b0 [ 40.676650][ T403] ? mark_lock+0x38/0x3e0 [ 40.676754][ T403] ? __pfx_validate_chain+0x10/0x10 [ 40.676973][ T403] ? hlock_class+0x4e/0x130 [ 40.677114][ T403] ? mark_lock+0x38/0x3e0 [ 40.677221][ T403] __lock_acquire+0xaf0/0x1570 [ 40.677362][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.677580][ T403] ? __get_task_comm+0x27/0x70 [ 40.677717][ T403] ? mark_lock+0x38/0x3e0 [ 40.677821][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.677958][ T403] ? trace_lock_acquire+0x135/0x1c0 [ 40.678096][ T403] ? __get_task_comm+0x27/0x70 [ 40.678311][ T403] ? lock_acquire+0x32/0xc0 [ 40.678446][ T403] ? __get_task_comm+0x27/0x70 [ 40.678582][ T403] _raw_spin_lock+0x30/0x40 [ 40.678719][ T403] ? __get_task_comm+0x27/0x70 [ 40.678935][ T403] __get_task_comm+0x27/0x70 [ 40.679077][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.679215][ T403] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.679350][ T403] ? dev_get_by_index+0x177/0x270 [ 40.679567][ T403] ? netdev_get_by_index+0x5e/0x80 [ 40.679704][ T403] ? fib6_nh_init+0x3d8/0x15b0 [ 40.679840][ T403] ? ip6_route_info_create+0xf18/0x17d0 [ 40.679975][ T403] ? addrconf_f6i_alloc+0x265/0x560 [ 40.680192][ T403] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.680330][ T403] ? addrconf_join_anycast+0x1c0/0x220 [ 40.680466][ T403] ? dev_forward_change+0x2a6/0x7b0 [ 40.680602][ T403] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.680857][ T403] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.680992][ T403] ? proc_sys_call_handler+0x403/0x5e0 [ 40.681130][ T403] ? vfs_write+0x9e5/0x10a0 [ 40.681265][ T403] ? ksys_write+0xf5/0x1e0 [ 40.681401][ T403] ? do_syscall_64+0xc6/0x1e0 [ 40.681618][ T403] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.681786][ T403] ? dev_get_by_index+0x177/0x270 [ 40.681923][ T403] netdev_get_by_index+0x5e/0x80 [ 40.682060][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.682279][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.682452][ T403] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.682588][ T403] ? kasan_save_track+0x14/0x30 [ 40.682726][ T403] ? __kasan_kmalloc+0x7f/0x90 [ 40.682944][ T403] ? __kmalloc+0x1d7/0x3c0 [ 40.683081][ T403] ? fib6_get_table+0x116/0x290 [ 40.683220][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.683358][ T403] ? __lock_release+0x103/0x460 [ 40.683582][ T403] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.683753][ T403] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.683889][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.684027][ T403] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.684249][ T403] ? do_raw_write_lock+0x122/0x3b0 [ 40.684384][ T403] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.684521][ T403] ? lock_acquire+0x32/0xc0 [ 40.684662][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.684967][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.685103][ T403] ? mark_lock+0x38/0x3e0 [ 40.685207][ T403] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.685375][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.685625][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.685764][ T403] ? __pfx_dev_forward_change+0x10/0x10 [ 40.685903][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.686045][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.686277][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.686446][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.686617][ T403] ? trace_kmalloc+0x2a/0xe0 [ 40.686754][ T403] ? __kmalloc_node+0x220/0x400 [ 40.686971][ T403] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.687108][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.687244][ T403] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.687419][ T403] ? __lock_acquire+0xaf0/0x1570 [ 40.687639][ T403] vfs_write+0x9e5/0x10a0 [ 40.687743][ T403] ? do_user_addr_fault+0x449/0xbe0 [ 40.687881][ T403] ? __pfx_vfs_write+0x10/0x10 [ 40.688019][ T403] ? find_held_lock+0x2c/0x110 [ 40.688158][ T403] ? __pfx___lock_release+0x10/0x10 [ 40.688383][ T403] ? __fget_light+0x53/0x1e0 [ 40.688523][ T403] ksys_write+0xf5/0x1e0 [ 40.688629][ T403] ? __pfx_ksys_write+0x10/0x10 [ 40.688768][ T403] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.688993][ T403] do_syscall_64+0xc6/0x1e0 [ 40.689132][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.689301][ T403] RIP: 0033:0x7f6264c05957 [ 40.689454][ T403] 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 [ 40.690036][ T403] RSP: 002b:00007ffe2287f3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.690331][ T403] RAX: ffffffffffffffda RBX: 000055724f74b360 RCX: 00007f6264c05957 [ 40.690537][ T403] RDX: 0000000000000002 RSI: 000055724f74b3a0 RDI: 0000000000000005 [ 40.690741][ T403] RBP: 000055724f74d4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.691033][ T403] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.691237][ T403] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f6264cbc9c0 [ 40.691444][ T403]