[ 30.244295][ T295] 8021q: 802.1Q VLAN Support v1.8 [ 31.379564][ T306] gre: GRE over IPv4 demultiplexor driver [ 31.401508][ T306] ip_gre: GRE over IPv4 tunneling driver [ 35.111629][ T342] ip (342) used greatest stack depth: 23384 bytes left [ 38.637438][ T372] GACT probability NOT on [ 40.416334][ T388] [ 40.416451][ T388] ===================================================== [ 40.416641][ T388] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.416871][ T388] 6.9.0-rc1-virtme #1 Not tainted [ 40.417022][ T388] ----------------------------------------------------- [ 40.417206][ T388] sysctl/388 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.417428][ T388] ffff888008d2ac28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.417704][ T388] [ 40.417704][ T388] and this task is already holding: [ 40.417927][ T388] ffff888005e13d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.418200][ T388] which would create a new lock dependency: [ 40.418388][ T388] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.418618][ T388] [ 40.418618][ T388] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.418877][ T388] (&ndev->lock){++--}-{2:2} [ 40.418880][ T388] [ 40.418880][ T388] ... which became SOFTIRQ-irq-safe at: [ 40.419240][ T388] __lock_acquire+0x797/0x1570 [ 40.419394][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.419545][ T388] _raw_write_lock+0x30/0x40 [ 40.419695][ T388] addrconf_rs_timer+0xa9/0x730 [ 40.419846][ T388] call_timer_fn+0x13b/0x230 [ 40.419998][ T388] __run_timers+0x545/0x810 [ 40.420150][ T388] run_timer_softirq+0xe8/0x1b0 [ 40.420301][ T388] __do_softirq+0x1f8/0x5df [ 40.420448][ T388] irq_exit_rcu+0x97/0xc0 [ 40.420599][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.420750][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.420933][ T388] default_idle+0xf/0x20 [ 40.421046][ T388] default_idle_call+0x6d/0xb0 [ 40.421195][ T388] cpuidle_idle_call+0x1f4/0x280 [ 40.421347][ T388] do_idle+0xf9/0x160 [ 40.421465][ T388] cpu_startup_entry+0x54/0x60 [ 40.421613][ T388] rest_init+0x14f/0x260 [ 40.421725][ T388] start_kernel+0x318/0x3d0 [ 40.421876][ T388] x86_64_start_reservations+0x18/0x30 [ 40.422026][ T388] x86_64_start_kernel+0xba/0x110 [ 40.422173][ T388] common_startup_64+0x12c/0x138 [ 40.422324][ T388] [ 40.422324][ T388] to a SOFTIRQ-irq-unsafe lock: [ 40.422507][ T388] (&p->alloc_lock){+.+.}-{2:2} [ 40.422511][ T388] [ 40.422511][ T388] ... which became SOFTIRQ-irq-unsafe at: [ 40.422875][ T388] ... [ 40.422876][ T388] __lock_acquire+0x797/0x1570 [ 40.423102][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.423250][ T388] _raw_spin_lock+0x30/0x40 [ 40.423399][ T388] set_mems_allowed+0x1d/0x210 [ 40.423549][ T388] kernel_init_freeable+0x72/0x310 [ 40.423699][ T388] kernel_init+0x20/0x200 [ 40.423853][ T388] ret_from_fork+0x31/0x70 [ 40.424005][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.424153][ T388] [ 40.424153][ T388] other info that might help us debug this: [ 40.424153][ T388] [ 40.424447][ T388] Possible interrupt unsafe locking scenario: [ 40.424447][ T388] [ 40.424669][ T388] CPU0 CPU1 [ 40.424815][ T388] ---- ---- [ 40.424968][ T388] lock(&p->alloc_lock); [ 40.425080][ T388] local_irq_disable(); [ 40.425265][ T388] lock(&ndev->lock); [ 40.425449][ T388] lock(&p->alloc_lock); [ 40.425637][ T388] [ 40.425752][ T388] lock(&ndev->lock); [ 40.425883][ T388] [ 40.425883][ T388] *** DEADLOCK *** [ 40.425883][ T388] [ 40.426109][ T388] 3 locks held by sysctl/388: [ 40.426259][ T388] #0: ffff8880057213f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.426534][ T388] #1: ffffffffa17969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.426835][ T388] #2: ffff888005e13d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.427102][ T388] [ 40.427102][ T388] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.427401][ T388] -> (&ndev->lock){++--}-{2:2} { [ 40.427555][ T388] HARDIRQ-ON-W at: [ 40.427672][ T388] __lock_acquire+0x797/0x1570 [ 40.427863][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.428053][ T388] _raw_write_lock_bh+0x38/0x50 [ 40.428242][ T388] addrconf_permanent_addr+0x6e/0x670 [ 40.428436][ T388] addrconf_notify+0x749/0xd60 [ 40.428623][ T388] notifier_call_chain+0xcd/0x150 [ 40.428812][ T388] __dev_notify_flags+0xe6/0x250 [ 40.429005][ T388] dev_change_flags+0xec/0x160 [ 40.429193][ T388] do_setlink+0x7d6/0x21e0 [ 40.429382][ T388] __rtnl_newlink+0xaa7/0xd80 [ 40.429573][ T388] rtnl_newlink+0x63/0xa0 [ 40.429765][ T388] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.429953][ T388] netlink_rcv_skb+0x130/0x360 [ 40.430144][ T388] netlink_unicast+0x449/0x710 [ 40.430334][ T388] netlink_sendmsg+0x723/0xbe0 [ 40.430523][ T388] ____sys_sendmsg+0x7b2/0xa10 [ 40.430713][ T388] ___sys_sendmsg+0xee/0x170 [ 40.430906][ T388] __sys_sendmsg+0xcd/0x170 [ 40.431094][ T388] do_syscall_64+0xc6/0x1e0 [ 40.431286][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.431511][ T388] HARDIRQ-ON-R at: [ 40.431626][ T388] __lock_acquire+0x797/0x1570 [ 40.431815][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.432006][ T388] _raw_read_lock_bh+0x44/0x80 [ 40.432200][ T388] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.432393][ T388] inet6_fill_link_af+0x5e/0xe0 [ 40.432579][ T388] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.432767][ T388] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.432957][ T388] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.433183][ T388] rtmsg_ifinfo+0x5b/0xa0 [ 40.433375][ T388] register_netdevice+0x1177/0x1690 [ 40.433563][ T388] register_netdev+0x20/0x40 [ 40.433750][ T388] sit_init_net+0x250/0x4f0 [ 40.433943][ T388] ops_init+0x9b/0x560 [ 40.434096][ T388] register_pernet_operations+0x2db/0x710 [ 40.434323][ T388] register_pernet_device+0x2a/0x60 [ 40.434518][ T388] sit_init+0x23/0xe0 [ 40.434672][ T388] do_one_initcall+0x8d/0x1e0 [ 40.434867][ T388] do_initcalls+0x1b2/0x3e0 [ 40.435058][ T388] kernel_init_freeable+0x232/0x310 [ 40.435249][ T388] kernel_init+0x20/0x200 [ 40.435435][ T388] ret_from_fork+0x31/0x70 [ 40.435629][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.435819][ T388] IN-SOFTIRQ-W at: [ 40.435962][ T388] __lock_acquire+0x797/0x1570 [ 40.436154][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.436343][ T388] _raw_write_lock+0x30/0x40 [ 40.436530][ T388] addrconf_rs_timer+0xa9/0x730 [ 40.436716][ T388] call_timer_fn+0x13b/0x230 [ 40.436904][ T388] __run_timers+0x545/0x810 [ 40.437094][ T388] run_timer_softirq+0xe8/0x1b0 [ 40.437281][ T388] __do_softirq+0x1f8/0x5df [ 40.437468][ T388] irq_exit_rcu+0x97/0xc0 [ 40.437651][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.437872][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.438097][ T388] default_idle+0xf/0x20 [ 40.438295][ T388] default_idle_call+0x6d/0xb0 [ 40.438480][ T388] cpuidle_idle_call+0x1f4/0x280 [ 40.438667][ T388] do_idle+0xf9/0x160 [ 40.438821][ T388] cpu_startup_entry+0x54/0x60 [ 40.439006][ T388] rest_init+0x14f/0x260 [ 40.439192][ T388] start_kernel+0x318/0x3d0 [ 40.439378][ T388] x86_64_start_reservations+0x18/0x30 [ 40.439570][ T388] x86_64_start_kernel+0xba/0x110 [ 40.439757][ T388] common_startup_64+0x12c/0x138 [ 40.439943][ T388] IN-SOFTIRQ-R at: [ 40.440056][ T388] __lock_acquire+0x797/0x1570 [ 40.440243][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.440430][ T388] _raw_read_lock_bh+0x44/0x80 [ 40.440621][ T388] ipv6_get_lladdr+0xa9/0x3e0 [ 40.440807][ T388] addrconf_rs_timer+0x24a/0x730 [ 40.440991][ T388] call_timer_fn+0x13b/0x230 [ 40.441178][ T388] __run_timers+0x545/0x810 [ 40.441368][ T388] run_timer_softirq+0xe8/0x1b0 [ 40.441558][ T388] __do_softirq+0x1f8/0x5df [ 40.441749][ T388] irq_exit_rcu+0x97/0xc0 [ 40.441939][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.442165][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.442392][ T388] default_idle+0xf/0x20 [ 40.442582][ T388] default_idle_call+0x6d/0xb0 [ 40.442775][ T388] cpuidle_idle_call+0x1f4/0x280 [ 40.442961][ T388] do_idle+0xf9/0x160 [ 40.443114][ T388] cpu_startup_entry+0x54/0x60 [ 40.443304][ T388] rest_init+0x14f/0x260 [ 40.443492][ T388] start_kernel+0x318/0x3d0 [ 40.443679][ T388] x86_64_start_reservations+0x18/0x30 [ 40.443955][ T388] x86_64_start_kernel+0xba/0x110 [ 40.444145][ T388] common_startup_64+0x12c/0x138 [ 40.444338][ T388] INITIAL USE at: [ 40.444451][ T388] __lock_acquire+0x797/0x1570 [ 40.444723][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.444913][ T388] _raw_write_lock_bh+0x38/0x50 [ 40.445102][ T388] addrconf_permanent_addr+0x6e/0x670 [ 40.445289][ T388] addrconf_notify+0x749/0xd60 [ 40.445557][ T388] notifier_call_chain+0xcd/0x150 [ 40.445743][ T388] __dev_notify_flags+0xe6/0x250 [ 40.445939][ T388] dev_change_flags+0xec/0x160 [ 40.446207][ T388] do_setlink+0x7d6/0x21e0 [ 40.446396][ T388] __rtnl_newlink+0xaa7/0xd80 [ 40.446587][ T388] rtnl_newlink+0x63/0xa0 [ 40.446857][ T388] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.447048][ T388] netlink_rcv_skb+0x130/0x360 [ 40.447237][ T388] netlink_unicast+0x449/0x710 [ 40.447427][ T388] netlink_sendmsg+0x723/0xbe0 [ 40.447698][ T388] ____sys_sendmsg+0x7b2/0xa10 [ 40.447889][ T388] ___sys_sendmsg+0xee/0x170 [ 40.448079][ T388] __sys_sendmsg+0xcd/0x170 [ 40.448351][ T388] do_syscall_64+0xc6/0x1e0 [ 40.448540][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.448764][ T388] INITIAL READ USE at: [ 40.448877][ T388] __lock_acquire+0x797/0x1570 [ 40.449230][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.449419][ T388] _raw_read_lock_bh+0x44/0x80 [ 40.449609][ T388] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.449922][ T388] inet6_fill_link_af+0x5e/0xe0 [ 40.450110][ T388] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.450300][ T388] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.450608][ T388] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.450833][ T388] rtmsg_ifinfo+0x5b/0xa0 [ 40.451021][ T388] register_netdevice+0x1177/0x1690 [ 40.451335][ T388] register_netdev+0x20/0x40 [ 40.451525][ T388] sit_init_net+0x250/0x4f0 [ 40.451715][ T388] ops_init+0x9b/0x560 [ 40.451903][ T388] register_pernet_operations+0x2db/0x710 [ 40.452210][ T388] register_pernet_device+0x2a/0x60 [ 40.452434][ T388] sit_init+0x23/0xe0 [ 40.452625][ T388] do_one_initcall+0x8d/0x1e0 [ 40.452898][ T388] do_initcalls+0x1b2/0x3e0 [ 40.453088][ T388] kernel_init_freeable+0x232/0x310 [ 40.453314][ T388] kernel_init+0x20/0x200 [ 40.453501][ T388] ret_from_fork+0x31/0x70 [ 40.453691][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.453877][ T388] } [ 40.453957][ T388] ... key at: [] __key.37+0x0/0x40 [ 40.454264][ T388] [ 40.454264][ T388] the dependencies between the lock to be acquired [ 40.454266][ T388] and SOFTIRQ-irq-unsafe lock: [ 40.454663][ T388] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.454900][ T388] HARDIRQ-ON-W at: [ 40.455013][ T388] __lock_acquire+0x797/0x1570 [ 40.455203][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.455392][ T388] _raw_spin_lock+0x30/0x40 [ 40.455666][ T388] set_mems_allowed+0x1d/0x210 [ 40.455843][ T388] kernel_init_freeable+0x72/0x310 [ 40.456030][ T388] kernel_init+0x20/0x200 [ 40.456287][ T388] ret_from_fork+0x31/0x70 [ 40.456463][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.456637][ T388] SOFTIRQ-ON-W at: [ 40.456740][ T388] __lock_acquire+0x797/0x1570 [ 40.457003][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.457199][ T388] _raw_spin_lock+0x30/0x40 [ 40.457390][ T388] set_mems_allowed+0x1d/0x210 [ 40.457660][ T388] kernel_init_freeable+0x72/0x310 [ 40.457851][ T388] kernel_init+0x20/0x200 [ 40.458041][ T388] ret_from_fork+0x31/0x70 [ 40.458231][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.458502][ T388] INITIAL USE at: [ 40.458616][ T388] __lock_acquire+0x797/0x1570 [ 40.458807][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.458996][ T388] _raw_spin_lock+0x30/0x40 [ 40.459271][ T388] set_mems_allowed+0x1d/0x210 [ 40.459459][ T388] kernel_init_freeable+0x72/0x310 [ 40.459636][ T388] kernel_init+0x20/0x200 [ 40.459893][ T388] ret_from_fork+0x31/0x70 [ 40.460064][ T388] ret_from_fork_asm+0x1a/0x30 [ 40.460240][ T388] } [ 40.460312][ T388] ... key at: [] __key.387+0x0/0x40 [ 40.460601][ T388] ... acquired at: [ 40.460704][ T388] check_prev_add+0x194/0xce0 [ 40.460851][ T388] validate_chain+0x71d/0x9b0 [ 40.460988][ T388] __lock_acquire+0xaf0/0x1570 [ 40.461207][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.461346][ T388] _raw_spin_lock+0x30/0x40 [ 40.461487][ T388] __get_task_comm+0x27/0x70 [ 40.461625][ T388] ref_tracker_alloc+0x2ee/0x490 [ 40.461845][ T388] netdev_get_by_index+0x5e/0x80 [ 40.461993][ T388] fib6_nh_init+0x3d8/0x15b0 [ 40.462132][ T388] ip6_route_info_create+0xf18/0x17d0 [ 40.462275][ T388] addrconf_f6i_alloc+0x265/0x560 [ 40.462424][ T388] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.462654][ T388] addrconf_join_anycast+0x1c0/0x220 [ 40.462803][ T388] dev_forward_change+0x2a6/0x7b0 [ 40.462954][ T388] addrconf_fixup_forwarding+0x23f/0x460 [ 40.463143][ T388] addrconf_sysctl_forward+0x212/0x2b0 [ 40.463371][ T388] proc_sys_call_handler+0x403/0x5e0 [ 40.463509][ T388] vfs_write+0x9e5/0x10a0 [ 40.463645][ T388] ksys_write+0xf5/0x1e0 [ 40.463780][ T388] do_syscall_64+0xc6/0x1e0 [ 40.464000][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.464168][ T388] [ 40.464241][ T388] [ 40.464241][ T388] stack backtrace: [ 40.464410][ T388] CPU: 3 PID: 388 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.464693][ T388] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.464993][ T388] Call Trace: [ 40.465095][ T388] [ 40.465248][ T388] dump_stack_lvl+0x82/0xd0 [ 40.465390][ T388] print_bad_irq_dependency+0x957/0xd40 [ 40.465528][ T388] ? hlock_class+0x4e/0x130 [ 40.465668][ T388] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.465924][ T388] ? __pfx_usage_skip+0x10/0x10 [ 40.466063][ T388] ? __bfs+0x246/0x650 [ 40.466165][ T388] ? __pfx_usage_match+0x10/0x10 [ 40.466307][ T388] check_irq_usage+0x596/0x850 [ 40.466445][ T388] ? __pfx_check_irq_usage+0x10/0x10 [ 40.466662][ T388] ? __bfs+0x246/0x650 [ 40.466765][ T388] ? __pfx_hlock_conflict+0x10/0x10 [ 40.466907][ T388] ? check_path.constprop.0+0x24/0x50 [ 40.467042][ T388] ? check_noncircular+0x14c/0x3e0 [ 40.467259][ T388] ? __pfx_check_noncircular+0x10/0x10 [ 40.467412][ T388] ? check_prev_add+0x194/0xce0 [ 40.467560][ T388] check_prev_add+0x194/0xce0 [ 40.467709][ T388] ? validate_chain+0x130/0x9b0 [ 40.467858][ T388] validate_chain+0x71d/0x9b0 [ 40.468090][ T388] ? mark_lock+0x38/0x3e0 [ 40.468202][ T388] ? __pfx_validate_chain+0x10/0x10 [ 40.468382][ T388] ? hlock_class+0x4e/0x130 [ 40.468519][ T388] ? mark_lock+0x38/0x3e0 [ 40.468706][ T388] __lock_acquire+0xaf0/0x1570 [ 40.468845][ T388] lock_acquire.part.0+0xeb/0x330 [ 40.468983][ T388] ? __get_task_comm+0x27/0x70 [ 40.469118][ T388] ? mark_lock+0x38/0x3e0 [ 40.469221][ T388] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.469359][ T388] ? trace_lock_acquire+0x135/0x1c0 [ 40.469496][ T388] ? __get_task_comm+0x27/0x70 [ 40.469630][ T388] ? lock_acquire+0x32/0xc0 [ 40.469766][ T388] ? __get_task_comm+0x27/0x70 [ 40.469988][ T388] _raw_spin_lock+0x30/0x40 [ 40.470126][ T388] ? __get_task_comm+0x27/0x70 [ 40.470260][ T388] __get_task_comm+0x27/0x70 [ 40.470395][ T388] ref_tracker_alloc+0x2ee/0x490 [ 40.470612][ T388] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.470747][ T388] ? dev_get_by_index+0x177/0x270 [ 40.470885][ T388] ? netdev_get_by_index+0x5e/0x80 [ 40.471019][ T388] ? fib6_nh_init+0x3d8/0x15b0 [ 40.471154][ T388] ? ip6_route_info_create+0xf18/0x17d0 [ 40.471454][ T388] ? addrconf_f6i_alloc+0x265/0x560 [ 40.471588][ T388] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.471725][ T388] ? addrconf_join_anycast+0x1c0/0x220 [ 40.471861][ T388] ? dev_forward_change+0x2a6/0x7b0 [ 40.472093][ T388] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.472267][ T388] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.472416][ T388] ? proc_sys_call_handler+0x403/0x5e0 [ 40.472564][ T388] ? vfs_write+0x9e5/0x10a0 [ 40.472799][ T388] ? ksys_write+0xf5/0x1e0 [ 40.472941][ T388] ? do_syscall_64+0xc6/0x1e0 [ 40.473076][ T388] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.473248][ T388] ? dev_get_by_index+0x177/0x270 [ 40.473387][ T388] netdev_get_by_index+0x5e/0x80 [ 40.473523][ T388] fib6_nh_init+0x3d8/0x15b0 [ 40.473658][ T388] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.473831][ T388] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.474047][ T388] ? kasan_save_track+0x14/0x30 [ 40.474184][ T388] ? __kasan_kmalloc+0x7f/0x90 [ 40.474324][ T388] ? __kmalloc+0x1d7/0x3c0 [ 40.474460][ T388] ? fib6_get_table+0x116/0x290 [ 40.474674][ T388] ip6_route_info_create+0xf18/0x17d0 [ 40.474816][ T388] ? __lock_release+0x103/0x460 [ 40.474953][ T388] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.475122][ T388] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.475340][ T388] addrconf_f6i_alloc+0x265/0x560 [ 40.475476][ T388] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.475615][ T388] ? do_raw_write_lock+0x122/0x3b0 [ 40.475754][ T388] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.475985][ T388] ? lock_acquire+0x32/0xc0 [ 40.476124][ T388] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.476304][ T388] addrconf_join_anycast+0x1c0/0x220 [ 40.476440][ T388] ? mark_lock+0x38/0x3e0 [ 40.476543][ T388] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.476799][ T388] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.476969][ T388] dev_forward_change+0x2a6/0x7b0 [ 40.477107][ T388] ? __pfx_dev_forward_change+0x10/0x10 [ 40.477248][ T388] addrconf_fixup_forwarding+0x23f/0x460 [ 40.477387][ T388] addrconf_sysctl_forward+0x212/0x2b0 [ 40.477523][ T388] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.477696][ T388] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.477944][ T388] ? trace_kmalloc+0x2a/0xe0 [ 40.478081][ T388] ? __kmalloc_node+0x220/0x400 [ 40.478221][ T388] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.478357][ T388] proc_sys_call_handler+0x403/0x5e0 [ 40.478497][ T388] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.478751][ T388] ? __lock_acquire+0xaf0/0x1570 [ 40.478896][ T388] vfs_write+0x9e5/0x10a0 [ 40.478999][ T388] ? do_user_addr_fault+0x449/0xbe0 [ 40.479138][ T388] ? __pfx_vfs_write+0x10/0x10 [ 40.479354][ T388] ? find_held_lock+0x2c/0x110 [ 40.479495][ T388] ? __pfx___lock_release+0x10/0x10 [ 40.479639][ T388] ? __fget_light+0x53/0x1e0 [ 40.479782][ T388] ksys_write+0xf5/0x1e0 [ 40.479966][ T388] ? __pfx_ksys_write+0x10/0x10 [ 40.480104][ T388] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.480240][ T388] do_syscall_64+0xc6/0x1e0 [ 40.480380][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.480633][ T388] RIP: 0033:0x7f84f280e957 [ 40.480782][ T388] 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 [ 40.481360][ T388] RSP: 002b:00007fff80e2afd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.481565][ T388] RAX: ffffffffffffffda RBX: 0000563e8bde7360 RCX: 00007f84f280e957 [ 40.481776][ T388] RDX: 0000000000000002 RSI: 0000563e8bde73a0 RDI: 0000000000000005 [ 40.482154][ T388] RBP: 0000563e8bde94d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.482362][ T388] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.482566][ T388] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f84f28c59c0 [ 40.482876][ T388]