[ 104.095262][ T1370] gre: GRE over IPv4 demultiplexor driver [ 104.127679][ T1370] ip_gre: GRE over IPv4 tunneling driver [ 104.447972][ T1376] ip (1376) used greatest stack depth: 23376 bytes left [ 111.474853][ T1438] [ 111.475050][ T1438] ===================================================== [ 111.475358][ T1438] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 111.475724][ T1438] 6.9.0-rc1-virtme #1 Not tainted [ 111.475965][ T1438] ----------------------------------------------------- [ 111.476265][ T1438] sysctl/1438 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 111.476617][ T1438] ffff888005cdac28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 111.477054][ T1438] [ 111.477054][ T1438] and this task is already holding: [ 111.477410][ T1438] ffff888002825580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 111.477815][ T1438] which would create a new lock dependency: [ 111.478095][ T1438] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 111.478441][ T1438] [ 111.478441][ T1438] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 111.478820][ T1438] (&ndev->lock){++--}-{2:2} [ 111.478827][ T1438] [ 111.478827][ T1438] ... which became SOFTIRQ-irq-safe at: [ 111.479385][ T1438] __lock_acquire+0x797/0x1570 [ 111.479616][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.479841][ T1438] _raw_write_lock+0x30/0x40 [ 111.480076][ T1438] addrconf_rs_timer+0xa9/0x730 [ 111.480300][ T1438] call_timer_fn+0x13b/0x230 [ 111.480527][ T1438] __run_timers+0x545/0x810 [ 111.480756][ T1438] run_timer_softirq+0xe8/0x1b0 [ 111.480995][ T1438] __do_softirq+0x1f8/0x5df [ 111.481226][ T1438] irq_exit_rcu+0x97/0xc0 [ 111.481453][ T1438] sysvec_apic_timer_interrupt+0x75/0x80 [ 111.481684][ T1438] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 111.481979][ T1438] default_idle+0xf/0x20 [ 111.482160][ T1438] default_idle_call+0x6d/0xb0 [ 111.482398][ T1438] cpuidle_idle_call+0x1f4/0x280 [ 111.482636][ T1438] do_idle+0xf9/0x160 [ 111.482813][ T1438] cpu_startup_entry+0x54/0x60 [ 111.483044][ T1438] start_secondary+0x21c/0x2b0 [ 111.483273][ T1438] common_startup_64+0x12c/0x138 [ 111.483497][ T1438] [ 111.483497][ T1438] to a SOFTIRQ-irq-unsafe lock: [ 111.483773][ T1438] (&p->alloc_lock){+.+.}-{2:2} [ 111.483780][ T1438] [ 111.483780][ T1438] ... which became SOFTIRQ-irq-unsafe at: [ 111.484329][ T1438] ... [ 111.484332][ T1438] __lock_acquire+0x797/0x1570 [ 111.484670][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.484904][ T1438] _raw_spin_lock+0x30/0x40 [ 111.485130][ T1438] set_mems_allowed+0x1d/0x210 [ 111.485357][ T1438] kernel_init_freeable+0x72/0x310 [ 111.485589][ T1438] kernel_init+0x20/0x200 [ 111.485815][ T1438] ret_from_fork+0x31/0x70 [ 111.486049][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.486273][ T1438] [ 111.486273][ T1438] other info that might help us debug this: [ 111.486273][ T1438] [ 111.486706][ T1438] Possible interrupt unsafe locking scenario: [ 111.486706][ T1438] [ 111.487076][ T1438] CPU0 CPU1 [ 111.487299][ T1438] ---- ---- [ 111.487520][ T1438] lock(&p->alloc_lock); [ 111.487695][ T1438] local_irq_disable(); [ 111.487981][ T1438] lock(&ndev->lock); [ 111.488261][ T1438] lock(&p->alloc_lock); [ 111.488554][ T1438] [ 111.488730][ T1438] lock(&ndev->lock); [ 111.488901][ T1438] [ 111.488901][ T1438] *** DEADLOCK *** [ 111.488901][ T1438] [ 111.489232][ T1438] 3 locks held by sysctl/1438: [ 111.489455][ T1438] #0: ffff88800613c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 111.489871][ T1438] #1: ffffffffb0b969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 111.490346][ T1438] #2: ffff888002825580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 111.490753][ T1438] [ 111.490753][ T1438] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 111.491195][ T1438] -> (&ndev->lock){++--}-{2:2} { [ 111.491432][ T1438] HARDIRQ-ON-W at: [ 111.491605][ T1438] __lock_acquire+0x797/0x1570 [ 111.491901][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.492196][ T1438] _raw_write_lock_bh+0x38/0x50 [ 111.492490][ T1438] addrconf_permanent_addr+0x6e/0x670 [ 111.492779][ T1438] addrconf_notify+0x749/0xd60 [ 111.493065][ T1438] notifier_call_chain+0xcd/0x150 [ 111.493351][ T1438] __dev_notify_flags+0xe6/0x250 [ 111.493638][ T1438] dev_change_flags+0xec/0x160 [ 111.493934][ T1438] do_setlink+0x7d6/0x21e0 [ 111.494222][ T1438] __rtnl_newlink+0xaa7/0xd80 [ 111.494508][ T1438] rtnl_newlink+0x63/0xa0 [ 111.494805][ T1438] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 111.495094][ T1438] netlink_rcv_skb+0x130/0x360 [ 111.495384][ T1438] netlink_unicast+0x449/0x710 [ 111.495673][ T1438] netlink_sendmsg+0x723/0xbe0 [ 111.495965][ T1438] ____sys_sendmsg+0x7b2/0xa10 [ 111.496253][ T1438] ___sys_sendmsg+0xee/0x170 [ 111.496540][ T1438] __sys_sendmsg+0xcd/0x170 [ 111.496847][ T1438] do_syscall_64+0xc6/0x1e0 [ 111.497144][ T1438] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 111.497492][ T1438] HARDIRQ-ON-R at: [ 111.497666][ T1438] __lock_acquire+0x797/0x1570 [ 111.497966][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.498260][ T1438] _raw_read_lock_bh+0x44/0x80 [ 111.498548][ T1438] inet6_fill_ifla6_attrs+0x516/0x740 [ 111.498839][ T1438] inet6_fill_link_af+0x5e/0xe0 [ 111.499125][ T1438] rtnl_fill_ifinfo+0x1612/0x29e0 [ 111.499410][ T1438] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 111.499708][ T1438] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 111.500052][ T1438] rtmsg_ifinfo+0x5b/0xa0 [ 111.500340][ T1438] register_netdevice+0x1177/0x1690 [ 111.500631][ T1438] register_netdev+0x20/0x40 [ 111.500918][ T1438] sit_init_net+0x250/0x4f0 [ 111.501208][ T1438] ops_init+0x9b/0x560 [ 111.501443][ T1438] register_pernet_operations+0x2db/0x710 [ 111.501742][ T1438] register_pernet_device+0x2a/0x60 [ 111.501951][ T1438] sit_init+0x23/0xe0 [ 111.502093][ T1438] do_one_initcall+0x8d/0x1e0 [ 111.502279][ T1438] do_initcalls+0x1b2/0x3e0 [ 111.502457][ T1438] kernel_init_freeable+0x232/0x310 [ 111.502638][ T1438] kernel_init+0x20/0x200 [ 111.502815][ T1438] ret_from_fork+0x31/0x70 [ 111.503002][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.503175][ T1438] IN-SOFTIRQ-W at: [ 111.503281][ T1438] __lock_acquire+0x797/0x1570 [ 111.503463][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.503639][ T1438] _raw_write_lock+0x30/0x40 [ 111.503823][ T1438] addrconf_rs_timer+0xa9/0x730 [ 111.503999][ T1438] call_timer_fn+0x13b/0x230 [ 111.504177][ T1438] __run_timers+0x545/0x810 [ 111.504351][ T1438] run_timer_softirq+0xe8/0x1b0 [ 111.504528][ T1438] __do_softirq+0x1f8/0x5df [ 111.504708][ T1438] irq_exit_rcu+0x97/0xc0 [ 111.504882][ T1438] sysvec_apic_timer_interrupt+0x75/0x80 [ 111.505097][ T1438] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 111.505316][ T1438] default_idle+0xf/0x20 [ 111.505488][ T1438] default_idle_call+0x6d/0xb0 [ 111.505661][ T1438] cpuidle_idle_call+0x1f4/0x280 [ 111.505834][ T1438] do_idle+0xf9/0x160 [ 111.505983][ T1438] cpu_startup_entry+0x54/0x60 [ 111.506164][ T1438] start_secondary+0x21c/0x2b0 [ 111.506344][ T1438] common_startup_64+0x12c/0x138 [ 111.506526][ T1438] IN-SOFTIRQ-R at: [ 111.506631][ T1438] __lock_acquire+0x797/0x1570 [ 111.506865][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.507042][ T1438] _raw_read_lock_bh+0x44/0x80 [ 111.507217][ T1438] ipv6_get_lladdr+0xa9/0x3e0 [ 111.507395][ T1438] addrconf_rs_timer+0x24a/0x730 [ 111.507570][ T1438] call_timer_fn+0x13b/0x230 [ 111.507824][ T1438] __run_timers+0x545/0x810 [ 111.508038][ T1438] run_timer_softirq+0xe8/0x1b0 [ 111.508247][ T1438] __do_softirq+0x1f8/0x5df [ 111.508455][ T1438] irq_exit_rcu+0x97/0xc0 [ 111.508671][ T1438] sysvec_apic_timer_interrupt+0x75/0x80 [ 111.508920][ T1438] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 111.509171][ T1438] default_idle+0xf/0x20 [ 111.509468][ T1438] default_idle_call+0x6d/0xb0 [ 111.509676][ T1438] cpuidle_idle_call+0x1f4/0x280 [ 111.509885][ T1438] do_idle+0xf9/0x160 [ 111.510057][ T1438] cpu_startup_entry+0x54/0x60 [ 111.510348][ T1438] start_secondary+0x21c/0x2b0 [ 111.510558][ T1438] common_startup_64+0x12c/0x138 [ 111.510767][ T1438] INITIAL USE at: [ 111.511058][ T1438] __lock_acquire+0x797/0x1570 [ 111.511269][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.511476][ T1438] _raw_write_lock_bh+0x38/0x50 [ 111.511699][ T1438] addrconf_permanent_addr+0x6e/0x670 [ 111.511990][ T1438] addrconf_notify+0x749/0xd60 [ 111.512200][ T1438] notifier_call_chain+0xcd/0x150 [ 111.512409][ T1438] __dev_notify_flags+0xe6/0x250 [ 111.512708][ T1438] dev_change_flags+0xec/0x160 [ 111.512917][ T1438] do_setlink+0x7d6/0x21e0 [ 111.513134][ T1438] __rtnl_newlink+0xaa7/0xd80 [ 111.513343][ T1438] rtnl_newlink+0x63/0xa0 [ 111.513550][ T1438] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 111.513757][ T1438] netlink_rcv_skb+0x130/0x360 [ 111.513966][ T1438] netlink_unicast+0x449/0x710 [ 111.514256][ T1438] netlink_sendmsg+0x723/0xbe0 [ 111.514461][ T1438] ____sys_sendmsg+0x7b2/0xa10 [ 111.514686][ T1438] ___sys_sendmsg+0xee/0x170 [ 111.514982][ T1438] __sys_sendmsg+0xcd/0x170 [ 111.515192][ T1438] do_syscall_64+0xc6/0x1e0 [ 111.515399][ T1438] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 111.515647][ T1438] INITIAL READ USE at: [ 111.515853][ T1438] __lock_acquire+0x797/0x1570 [ 111.516059][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.516275][ T1438] _raw_read_lock_bh+0x44/0x80 [ 111.516565][ T1438] inet6_fill_ifla6_attrs+0x516/0x740 [ 111.516826][ T1438] inet6_fill_link_af+0x5e/0xe0 [ 111.517045][ T1438] rtnl_fill_ifinfo+0x1612/0x29e0 [ 111.517254][ T1438] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 111.517591][ T1438] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 111.517842][ T1438] rtmsg_ifinfo+0x5b/0xa0 [ 111.518049][ T1438] register_netdevice+0x1177/0x1690 [ 111.518380][ T1438] register_netdev+0x20/0x40 [ 111.518586][ T1438] sit_init_net+0x250/0x4f0 [ 111.518798][ T1438] ops_init+0x9b/0x560 [ 111.519098][ T1438] register_pernet_operations+0x2db/0x710 [ 111.519347][ T1438] register_pernet_device+0x2a/0x60 [ 111.519598][ T1438] sit_init+0x23/0xe0 [ 111.519889][ T1438] do_one_initcall+0x8d/0x1e0 [ 111.520103][ T1438] do_initcalls+0x1b2/0x3e0 [ 111.520316][ T1438] kernel_init_freeable+0x232/0x310 [ 111.520655][ T1438] kernel_init+0x20/0x200 [ 111.520865][ T1438] ret_from_fork+0x31/0x70 [ 111.521078][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.521365][ T1438] } [ 111.521452][ T1438] ... key at: [] __key.37+0x0/0x40 [ 111.521708][ T1438] [ 111.521708][ T1438] the dependencies between the lock to be acquired [ 111.521710][ T1438] and SOFTIRQ-irq-unsafe lock: [ 111.522238][ T1438] -> (&p->alloc_lock){+.+.}-{2:2} { [ 111.522420][ T1438] HARDIRQ-ON-W at: [ 111.522547][ T1438] __lock_acquire+0x797/0x1570 [ 111.522761][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.523050][ T1438] _raw_spin_lock+0x30/0x40 [ 111.523263][ T1438] set_mems_allowed+0x1d/0x210 [ 111.523469][ T1438] kernel_init_freeable+0x72/0x310 [ 111.523849][ T1438] kernel_init+0x20/0x200 [ 111.524059][ T1438] ret_from_fork+0x31/0x70 [ 111.524266][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.524472][ T1438] SOFTIRQ-ON-W at: [ 111.524682][ T1438] __lock_acquire+0x797/0x1570 [ 111.524894][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.525102][ T1438] _raw_spin_lock+0x30/0x40 [ 111.525320][ T1438] set_mems_allowed+0x1d/0x210 [ 111.525534][ T1438] kernel_init_freeable+0x72/0x310 [ 111.525743][ T1438] kernel_init+0x20/0x200 [ 111.525953][ T1438] ret_from_fork+0x31/0x70 [ 111.526245][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.526450][ T1438] INITIAL USE at: [ 111.526574][ T1438] __lock_acquire+0x797/0x1570 [ 111.526807][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.527104][ T1438] _raw_spin_lock+0x30/0x40 [ 111.527312][ T1438] set_mems_allowed+0x1d/0x210 [ 111.527520][ T1438] kernel_init_freeable+0x72/0x310 [ 111.527809][ T1438] kernel_init+0x20/0x200 [ 111.528018][ T1438] ret_from_fork+0x31/0x70 [ 111.528239][ T1438] ret_from_fork_asm+0x1a/0x30 [ 111.528448][ T1438] } [ 111.528617][ T1438] ... key at: [] __key.387+0x0/0x40 [ 111.528865][ T1438] ... acquired at: [ 111.528992][ T1438] check_prev_add+0x194/0xce0 [ 111.529162][ T1438] validate_chain+0x71d/0x9b0 [ 111.529410][ T1438] __lock_acquire+0xaf0/0x1570 [ 111.529575][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.529749][ T1438] _raw_spin_lock+0x30/0x40 [ 111.529916][ T1438] __get_task_comm+0x27/0x70 [ 111.530166][ T1438] ref_tracker_alloc+0x2ee/0x490 [ 111.530334][ T1438] netdev_get_by_index+0x5e/0x80 [ 111.530499][ T1438] fib6_nh_init+0x3d8/0x15b0 [ 111.530668][ T1438] ip6_route_info_create+0xf18/0x17d0 [ 111.530836][ T1438] addrconf_f6i_alloc+0x265/0x560 [ 111.531081][ T1438] __ipv6_dev_ac_inc+0x25f/0xb10 [ 111.531255][ T1438] addrconf_join_anycast+0x1c0/0x220 [ 111.531420][ T1438] dev_forward_change+0x2a6/0x7b0 [ 111.531587][ T1438] addrconf_fixup_forwarding+0x23f/0x460 [ 111.531877][ T1438] addrconf_sysctl_forward+0x212/0x2b0 [ 111.532045][ T1438] proc_sys_call_handler+0x403/0x5e0 [ 111.532216][ T1438] vfs_write+0x9e5/0x10a0 [ 111.532385][ T1438] ksys_write+0xf5/0x1e0 [ 111.532634][ T1438] do_syscall_64+0xc6/0x1e0 [ 111.532811][ T1438] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 111.533019][ T1438] [ 111.533106][ T1438] [ 111.533106][ T1438] stack backtrace: [ 111.533387][ T1438] CPU: 0 PID: 1438 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 111.533647][ T1438] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 111.534015][ T1438] Call Trace: [ 111.534234][ T1438] [ 111.534322][ T1438] dump_stack_lvl+0x82/0xd0 [ 111.534495][ T1438] print_bad_irq_dependency+0x957/0xd40 [ 111.534662][ T1438] ? hlock_class+0x4e/0x130 [ 111.534832][ T1438] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 111.535125][ T1438] ? __pfx_usage_skip+0x10/0x10 [ 111.535297][ T1438] ? __bfs+0x246/0x650 [ 111.535423][ T1438] ? __pfx_usage_match+0x10/0x10 [ 111.535589][ T1438] check_irq_usage+0x596/0x850 [ 111.535843][ T1438] ? __pfx_check_irq_usage+0x10/0x10 [ 111.536010][ T1438] ? __bfs+0x246/0x650 [ 111.536135][ T1438] ? __pfx_hlock_conflict+0x10/0x10 [ 111.536302][ T1438] ? check_path.constprop.0+0x24/0x50 [ 111.536638][ T1438] ? check_noncircular+0x14c/0x3e0 [ 111.536816][ T1438] ? __pfx_check_noncircular+0x10/0x10 [ 111.536987][ T1438] ? check_prev_add+0x194/0xce0 [ 111.537155][ T1438] check_prev_add+0x194/0xce0 [ 111.537333][ T1438] ? validate_chain+0x130/0x9b0 [ 111.537505][ T1438] validate_chain+0x71d/0x9b0 [ 111.537672][ T1438] ? mark_lock+0x38/0x3e0 [ 111.537798][ T1438] ? __pfx_validate_chain+0x10/0x10 [ 111.537967][ T1438] ? hlock_class+0x4e/0x130 [ 111.538221][ T1438] ? mark_lock+0x38/0x3e0 [ 111.538348][ T1438] __lock_acquire+0xaf0/0x1570 [ 111.538518][ T1438] lock_acquire.part.0+0xeb/0x330 [ 111.538683][ T1438] ? __get_task_comm+0x27/0x70 [ 111.538859][ T1438] ? mark_lock+0x38/0x3e0 [ 111.539068][ T1438] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 111.539236][ T1438] ? trace_lock_acquire+0x135/0x1c0 [ 111.539401][ T1438] ? __get_task_comm+0x27/0x70 [ 111.539567][ T1438] ? lock_acquire+0x32/0xc0 [ 111.539819][ T1438] ? __get_task_comm+0x27/0x70 [ 111.539986][ T1438] _raw_spin_lock+0x30/0x40 [ 111.540155][ T1438] ? __get_task_comm+0x27/0x70 [ 111.540320][ T1438] __get_task_comm+0x27/0x70 [ 111.540577][ T1438] ref_tracker_alloc+0x2ee/0x490 [ 111.540746][ T1438] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 111.540912][ T1438] ? dev_get_by_index+0x177/0x270 [ 111.541079][ T1438] ? netdev_get_by_index+0x5e/0x80 [ 111.541242][ T1438] ? fib6_nh_init+0x3d8/0x15b0 [ 111.541490][ T1438] ? ip6_route_info_create+0xf18/0x17d0 [ 111.541657][ T1438] ? addrconf_f6i_alloc+0x265/0x560 [ 111.541822][ T1438] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 111.541998][ T1438] ? addrconf_join_anycast+0x1c0/0x220 [ 111.542246][ T1438] ? dev_forward_change+0x2a6/0x7b0 [ 111.542410][ T1438] ? addrconf_fixup_forwarding+0x23f/0x460 [ 111.542617][ T1438] ? addrconf_sysctl_forward+0x212/0x2b0 [ 111.542783][ T1438] ? proc_sys_call_handler+0x403/0x5e0 [ 111.543035][ T1438] ? vfs_write+0x9e5/0x10a0 [ 111.543204][ T1438] ? ksys_write+0xf5/0x1e0 [ 111.543379][ T1438] ? do_syscall_64+0xc6/0x1e0 [ 111.543548][ T1438] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 111.543838][ T1438] ? dev_get_by_index+0x177/0x270 [ 111.544005][ T1438] netdev_get_by_index+0x5e/0x80 [ 111.544171][ T1438] fib6_nh_init+0x3d8/0x15b0 [ 111.544337][ T1438] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 111.544624][ T1438] ? __pfx_fib6_nh_init+0x10/0x10 [ 111.544794][ T1438] ? kasan_save_track+0x14/0x30 [ 111.544971][ T1438] ? __kasan_kmalloc+0x7f/0x90 [ 111.545136][ T1438] ? __kmalloc+0x1d7/0x3c0 [ 111.545382][ T1438] ? fib6_get_table+0x116/0x290 [ 111.545547][ T1438] ip6_route_info_create+0xf18/0x17d0 [ 111.545711][ T1438] ? __lock_release+0x103/0x460 [ 111.545876][ T1438] ? __pfx_ip6_route_info_create+0x10/0x10 [ 111.546162][ T1438] ? addrconf_f6i_alloc+0x12d/0x560 [ 111.546326][ T1438] addrconf_f6i_alloc+0x265/0x560 [ 111.546491][ T1438] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 111.546665][ T1438] ? do_raw_write_lock+0x122/0x3b0 [ 111.546921][ T1438] ? __pfx_do_raw_write_lock+0x10/0x10 [ 111.547086][ T1438] ? lock_acquire+0x32/0xc0 [ 111.547251][ T1438] __ipv6_dev_ac_inc+0x25f/0xb10 [ 111.547419][ T1438] addrconf_join_anycast+0x1c0/0x220 [ 111.547583][ T1438] ? mark_lock+0x38/0x3e0 [ 111.547790][ T1438] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 111.548004][ T1438] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 111.548210][ T1438] dev_forward_change+0x2a6/0x7b0 [ 111.548378][ T1438] ? __pfx_dev_forward_change+0x10/0x10 [ 111.548545][ T1438] addrconf_fixup_forwarding+0x23f/0x460 [ 111.548712][ T1438] addrconf_sysctl_forward+0x212/0x2b0 [ 111.548877][ T1438] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 111.549085][ T1438] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 111.549460][ T1438] ? trace_kmalloc+0x2a/0xe0 [ 111.549628][ T1438] ? __kmalloc_node+0x220/0x400 [ 111.549794][ T1438] ? proc_sys_call_handler+0x30b/0x5e0 [ 111.549962][ T1438] proc_sys_call_handler+0x403/0x5e0 [ 111.550211][ T1438] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 111.550417][ T1438] ? __lock_acquire+0xaf0/0x1570 [ 111.550583][ T1438] vfs_write+0x9e5/0x10a0 [ 111.550711][ T1438] ? do_user_addr_fault+0x449/0xbe0 [ 111.550967][ T1438] ? __pfx_vfs_write+0x10/0x10 [ 111.551138][ T1438] ? find_held_lock+0x2c/0x110 [ 111.551308][ T1438] ? __pfx___lock_release+0x10/0x10 [ 111.551475][ T1438] ? __fget_light+0x53/0x1e0 [ 111.551734][ T1438] ksys_write+0xf5/0x1e0 [ 111.551862][ T1438] ? __pfx_ksys_write+0x10/0x10 [ 111.552030][ T1438] ? do_user_addr_fault+0x4bd/0xbe0 [ 111.552196][ T1438] do_syscall_64+0xc6/0x1e0 [ 111.552365][ T1438] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 111.552583][ T1438] RIP: 0033:0x7f9c09c83957 [ 111.552764][ T1438] 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 [ 111.553449][ T1438] RSP: 002b:00007ffce25667e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 111.553704][ T1438] RAX: ffffffffffffffda RBX: 000055681630e360 RCX: 00007f9c09c83957 [ 111.554047][ T1438] RDX: 0000000000000002 RSI: 000055681630e3a0 RDI: 0000000000000005 [ 111.554298][ T1438] RBP: 00005568163104d0 R08: 0000000000000003 R09: 0000000000000077 [ 111.554546][ T1438] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 111.554877][ T1438] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f9c09d3a9c0 [ 111.555130][ T1438]