[ 30.228649][ T309] gre: GRE over IPv4 demultiplexor driver [ 30.247336][ T309] ip_gre: GRE over IPv4 tunneling driver [ 30.472337][ T313] ip (313) used greatest stack depth: 23904 bytes left [ 32.336068][ T331] 8021q: 802.1Q VLAN Support v1.8 [ 36.281794][ T369] GACT probability NOT on [ 39.706913][ T402] [ 39.707022][ T402] ===================================================== [ 39.707196][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.707405][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 39.707549][ T402] ----------------------------------------------------- [ 39.707722][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.707926][ T402] ffff88800638cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.708192][ T402] [ 39.708192][ T402] and this task is already holding: [ 39.708391][ T402] ffff888004dfa580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.708646][ T402] which would create a new lock dependency: [ 39.708819][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.709033][ T402] [ 39.709033][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.709266][ T402] (&ndev->lock){++--}-{2:2} [ 39.709270][ T402] [ 39.709270][ T402] ... which became SOFTIRQ-irq-safe at: [ 39.709607][ T402] __lock_acquire+0x797/0x1570 [ 39.709750][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.709895][ T402] _raw_write_lock+0x30/0x40 [ 39.710038][ T402] addrconf_rs_timer+0xa9/0x730 [ 39.710175][ T402] call_timer_fn+0x13b/0x230 [ 39.710315][ T402] __run_timers+0x545/0x810 [ 39.710453][ T402] run_timer_softirq+0xe8/0x1b0 [ 39.710592][ T402] __do_softirq+0x1f8/0x5df [ 39.710731][ T402] irq_exit_rcu+0x97/0xc0 [ 39.710870][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.711009][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.711180][ T402] _raw_spin_unlock_irq+0x30/0x50 [ 39.711320][ T402] p9_tag_alloc+0x351/0x700 [ 39.711460][ T402] p9_client_prepare_req+0xe6/0x290 [ 39.711601][ T402] p9_client_rpc+0x18d/0x930 [ 39.711738][ T402] p9_client_clunk+0x74/0xe0 [ 39.711877][ T402] v9fs_dir_release+0x25f/0x320 [ 39.712015][ T402] __fput+0x1fc/0xa80 [ 39.712121][ T402] task_work_run+0x132/0x220 [ 39.712261][ T402] do_exit+0x774/0xcf0 [ 39.712370][ T402] do_group_exit+0xb8/0x260 [ 39.712506][ T402] __x64_sys_exit_group+0x3e/0x50 [ 39.712643][ T402] do_syscall_64+0xc6/0x1e0 [ 39.712788][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.712957][ T402] [ 39.712957][ T402] to a SOFTIRQ-irq-unsafe lock: [ 39.713127][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 39.713131][ T402] [ 39.713131][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 39.713466][ T402] ... [ 39.713468][ T402] __lock_acquire+0x797/0x1570 [ 39.713674][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.713810][ T402] _raw_spin_lock+0x30/0x40 [ 39.713948][ T402] set_mems_allowed+0x1d/0x210 [ 39.714089][ T402] kernel_init_freeable+0x72/0x310 [ 39.714227][ T402] kernel_init+0x20/0x200 [ 39.714363][ T402] ret_from_fork+0x31/0x70 [ 39.714501][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.714646][ T402] [ 39.714646][ T402] other info that might help us debug this: [ 39.714646][ T402] [ 39.714912][ T402] Possible interrupt unsafe locking scenario: [ 39.714912][ T402] [ 39.715114][ T402] CPU0 CPU1 [ 39.715249][ T402] ---- ---- [ 39.715385][ T402] lock(&p->alloc_lock); [ 39.715489][ T402] local_irq_disable(); [ 39.715665][ T402] lock(&ndev->lock); [ 39.715845][ T402] lock(&p->alloc_lock); [ 39.716015][ T402] [ 39.716118][ T402] lock(&ndev->lock); [ 39.716223][ T402] [ 39.716223][ T402] *** DEADLOCK *** [ 39.716223][ T402] [ 39.716425][ T402] 3 locks held by sysctl/402: [ 39.716564][ T402] #0: ffff88800f1213f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.716824][ T402] #1: ffffffffbb9969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.717108][ T402] #2: ffff888004dfa580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.717353][ T402] [ 39.717353][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.717620][ T402] -> (&ndev->lock){++--}-{2:2} { [ 39.717765][ T402] HARDIRQ-ON-W at: [ 39.717874][ T402] __lock_acquire+0x797/0x1570 [ 39.718052][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.718239][ T402] _raw_write_lock_bh+0x38/0x50 [ 39.718413][ T402] addrconf_permanent_addr+0x6e/0x670 [ 39.718585][ T402] addrconf_notify+0x749/0xd60 [ 39.718767][ T402] notifier_call_chain+0xcd/0x150 [ 39.718951][ T402] __dev_notify_flags+0xe6/0x250 [ 39.719125][ T402] dev_change_flags+0xec/0x160 [ 39.719300][ T402] do_setlink+0x7d6/0x21e0 [ 39.719473][ T402] __rtnl_newlink+0xaa7/0xd80 [ 39.719652][ T402] rtnl_newlink+0x63/0xa0 [ 39.719824][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.720004][ T402] netlink_rcv_skb+0x130/0x360 [ 39.720179][ T402] netlink_unicast+0x449/0x710 [ 39.720352][ T402] netlink_sendmsg+0x723/0xbe0 [ 39.720526][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 39.720700][ T402] ___sys_sendmsg+0xee/0x170 [ 39.720874][ T402] __sys_sendmsg+0xcd/0x170 [ 39.721048][ T402] do_syscall_64+0xc6/0x1e0 [ 39.721232][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.721440][ T402] HARDIRQ-ON-R at: [ 39.721545][ T402] __lock_acquire+0x797/0x1570 [ 39.721721][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.721895][ T402] _raw_read_lock_bh+0x44/0x80 [ 39.722068][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.722243][ T402] inet6_fill_link_af+0x5e/0xe0 [ 39.722422][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.722597][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.722769][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.722979][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 39.723152][ T402] register_netdevice+0x1177/0x1690 [ 39.723324][ T402] register_netdev+0x20/0x40 [ 39.723502][ T402] sit_init_net+0x250/0x4f0 [ 39.723677][ T402] ops_init+0x9b/0x560 [ 39.723816][ T402] register_pernet_operations+0x2db/0x710 [ 39.724022][ T402] register_pernet_device+0x2a/0x60 [ 39.724198][ T402] sit_init+0x23/0xe0 [ 39.724340][ T402] do_one_initcall+0x8d/0x1e0 [ 39.724519][ T402] do_initcalls+0x1b2/0x3e0 [ 39.724694][ T402] kernel_init_freeable+0x232/0x310 [ 39.724865][ T402] kernel_init+0x20/0x200 [ 39.725039][ T402] ret_from_fork+0x31/0x70 [ 39.725215][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.725390][ T402] IN-SOFTIRQ-W at: [ 39.725495][ T402] __lock_acquire+0x797/0x1570 [ 39.725675][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.725851][ T402] _raw_write_lock+0x30/0x40 [ 39.726024][ T402] addrconf_rs_timer+0xa9/0x730 [ 39.726195][ T402] call_timer_fn+0x13b/0x230 [ 39.726369][ T402] __run_timers+0x545/0x810 [ 39.726545][ T402] run_timer_softirq+0xe8/0x1b0 [ 39.726722][ T402] __do_softirq+0x1f8/0x5df [ 39.726895][ T402] irq_exit_rcu+0x97/0xc0 [ 39.727073][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.727281][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.727490][ T402] _raw_spin_unlock_irq+0x30/0x50 [ 39.727665][ T402] p9_tag_alloc+0x351/0x700 [ 39.727839][ T402] p9_client_prepare_req+0xe6/0x290 [ 39.728016][ T402] p9_client_rpc+0x18d/0x930 [ 39.728197][ T402] p9_client_clunk+0x74/0xe0 [ 39.728373][ T402] v9fs_dir_release+0x25f/0x320 [ 39.728553][ T402] __fput+0x1fc/0xa80 [ 39.728696][ T402] task_work_run+0x132/0x220 [ 39.728871][ T402] do_exit+0x774/0xcf0 [ 39.729015][ T402] do_group_exit+0xb8/0x260 [ 39.729191][ T402] __x64_sys_exit_group+0x3e/0x50 [ 39.729365][ T402] do_syscall_64+0xc6/0x1e0 [ 39.729539][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.729745][ T402] IN-SOFTIRQ-R at: [ 39.729851][ T402] __lock_acquire+0x797/0x1570 [ 39.730027][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.730206][ T402] _raw_read_lock_bh+0x44/0x80 [ 39.730381][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 39.730556][ T402] addrconf_rs_timer+0x24a/0x730 [ 39.730730][ T402] call_timer_fn+0x13b/0x230 [ 39.730902][ T402] __run_timers+0x545/0x810 [ 39.731078][ T402] run_timer_softirq+0xe8/0x1b0 [ 39.731344][ T402] __do_softirq+0x1f8/0x5df [ 39.731521][ T402] irq_exit_rcu+0x97/0xc0 [ 39.731694][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.731901][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.732186][ T402] _raw_spin_unlock_irq+0x30/0x50 [ 39.732358][ T402] p9_tag_alloc+0x351/0x700 [ 39.732533][ T402] p9_client_prepare_req+0xe6/0x290 [ 39.732791][ T402] p9_client_rpc+0x18d/0x930 [ 39.732963][ T402] p9_client_clunk+0x74/0xe0 [ 39.733136][ T402] v9fs_dir_release+0x25f/0x320 [ 39.733392][ T402] __fput+0x1fc/0xa80 [ 39.733534][ T402] task_work_run+0x132/0x220 [ 39.733709][ T402] do_exit+0x774/0xcf0 [ 39.733853][ T402] do_group_exit+0xb8/0x260 [ 39.734109][ T402] __x64_sys_exit_group+0x3e/0x50 [ 39.734285][ T402] do_syscall_64+0xc6/0x1e0 [ 39.734458][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.734749][ T402] INITIAL USE at: [ 39.734853][ T402] __lock_acquire+0x797/0x1570 [ 39.735026][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.735203][ T402] _raw_write_lock_bh+0x38/0x50 [ 39.735471][ T402] addrconf_permanent_addr+0x6e/0x670 [ 39.735660][ T402] addrconf_notify+0x749/0xd60 [ 39.735851][ T402] notifier_call_chain+0xcd/0x150 [ 39.736123][ T402] __dev_notify_flags+0xe6/0x250 [ 39.736316][ T402] dev_change_flags+0xec/0x160 [ 39.736512][ T402] do_setlink+0x7d6/0x21e0 [ 39.736705][ T402] __rtnl_newlink+0xaa7/0xd80 [ 39.736978][ T402] rtnl_newlink+0x63/0xa0 [ 39.737171][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.737361][ T402] netlink_rcv_skb+0x130/0x360 [ 39.737632][ T402] netlink_unicast+0x449/0x710 [ 39.737824][ T402] netlink_sendmsg+0x723/0xbe0 [ 39.738014][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 39.738205][ T402] ___sys_sendmsg+0xee/0x170 [ 39.738542][ T402] __sys_sendmsg+0xcd/0x170 [ 39.738716][ T402] do_syscall_64+0xc6/0x1e0 [ 39.738890][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.739179][ T402] INITIAL READ USE at: [ 39.739287][ T402] __lock_acquire+0x797/0x1570 [ 39.739460][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.739633][ T402] _raw_read_lock_bh+0x44/0x80 [ 39.739885][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.740092][ T402] inet6_fill_link_af+0x5e/0xe0 [ 39.740267][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.740526][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.740732][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.740942][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 39.741203][ T402] register_netdevice+0x1177/0x1690 [ 39.741409][ T402] register_netdev+0x20/0x40 [ 39.741582][ T402] sit_init_net+0x250/0x4f0 [ 39.741843][ T402] ops_init+0x9b/0x560 [ 39.742019][ T402] register_pernet_operations+0x2db/0x710 [ 39.742225][ T402] register_pernet_device+0x2a/0x60 [ 39.742517][ T402] sit_init+0x23/0xe0 [ 39.742689][ T402] do_one_initcall+0x8d/0x1e0 [ 39.742862][ T402] do_initcalls+0x1b2/0x3e0 [ 39.743120][ T402] kernel_init_freeable+0x232/0x310 [ 39.743325][ T402] kernel_init+0x20/0x200 [ 39.743498][ T402] ret_from_fork+0x31/0x70 [ 39.743673][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.743928][ T402] } [ 39.744000][ T402] ... key at: [] __key.37+0x0/0x40 [ 39.744212][ T402] [ 39.744212][ T402] the dependencies between the lock to be acquired [ 39.744214][ T402] and SOFTIRQ-irq-unsafe lock: [ 39.744663][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.744808][ T402] HARDIRQ-ON-W at: [ 39.744913][ T402] __lock_acquire+0x797/0x1570 [ 39.745172][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.745346][ T402] _raw_spin_lock+0x30/0x40 [ 39.745529][ T402] set_mems_allowed+0x1d/0x210 [ 39.745709][ T402] kernel_init_freeable+0x72/0x310 [ 39.745964][ T402] kernel_init+0x20/0x200 [ 39.746138][ T402] ret_from_fork+0x31/0x70 [ 39.746313][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.746566][ T402] SOFTIRQ-ON-W at: [ 39.746669][ T402] __lock_acquire+0x797/0x1570 [ 39.746847][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.747022][ T402] _raw_spin_lock+0x30/0x40 [ 39.747281][ T402] set_mems_allowed+0x1d/0x210 [ 39.747454][ T402] kernel_init_freeable+0x72/0x310 [ 39.747627][ T402] kernel_init+0x20/0x200 [ 39.747807][ T402] ret_from_fork+0x31/0x70 [ 39.747980][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.748168][ T402] INITIAL USE at: [ 39.748272][ T402] __lock_acquire+0x797/0x1570 [ 39.748528][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.748701][ T402] _raw_spin_lock+0x30/0x40 [ 39.748875][ T402] set_mems_allowed+0x1d/0x210 [ 39.749220][ T402] kernel_init_freeable+0x72/0x310 [ 39.749401][ T402] kernel_init+0x20/0x200 [ 39.749586][ T402] ret_from_fork+0x31/0x70 [ 39.749759][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.749933][ T402] } [ 39.750005][ T402] ... key at: [] __key.387+0x0/0x40 [ 39.750212][ T402] ... acquired at: [ 39.750315][ T402] check_prev_add+0x194/0xce0 [ 39.750540][ T402] validate_chain+0x71d/0x9b0 [ 39.750685][ T402] __lock_acquire+0xaf0/0x1570 [ 39.750824][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.750963][ T402] _raw_spin_lock+0x30/0x40 [ 39.751183][ T402] __get_task_comm+0x27/0x70 [ 39.751323][ T402] ref_tracker_alloc+0x2ee/0x490 [ 39.751461][ T402] netdev_get_by_index+0x5e/0x80 [ 39.751605][ T402] fib6_nh_init+0x3d8/0x15b0 [ 39.751749][ T402] ip6_route_info_create+0xf18/0x17d0 [ 39.751890][ T402] addrconf_f6i_alloc+0x265/0x560 [ 39.752028][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.752169][ T402] addrconf_join_anycast+0x1c0/0x220 [ 39.752305][ T402] dev_forward_change+0x2a6/0x7b0 [ 39.752522][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 39.752692][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 39.752829][ T402] proc_sys_call_handler+0x403/0x5e0 [ 39.752973][ T402] vfs_write+0x9e5/0x10a0 [ 39.753192][ T402] ksys_write+0xf5/0x1e0 [ 39.753328][ T402] do_syscall_64+0xc6/0x1e0 [ 39.753467][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.753638][ T402] [ 39.753788][ T402] [ 39.753788][ T402] stack backtrace: [ 39.753958][ T402] CPU: 3 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.754164][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.754555][ T402] Call Trace: [ 39.754660][ T402] [ 39.754732][ T402] dump_stack_lvl+0x82/0xd0 [ 39.754874][ T402] print_bad_irq_dependency+0x957/0xd40 [ 39.755013][ T402] ? hlock_class+0x4e/0x130 [ 39.755230][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.755403][ T402] ? __pfx_usage_skip+0x10/0x10 [ 39.755538][ T402] ? __bfs+0x246/0x650 [ 39.755646][ T402] ? __pfx_usage_match+0x10/0x10 [ 39.755866][ T402] check_irq_usage+0x596/0x850 [ 39.756005][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 39.756142][ T402] ? __bfs+0x246/0x650 [ 39.756246][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 39.756465][ T402] ? check_path.constprop.0+0x24/0x50 [ 39.756602][ T402] ? check_noncircular+0x14c/0x3e0 [ 39.756740][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 39.756886][ T402] ? check_prev_add+0x194/0xce0 [ 39.757023][ T402] check_prev_add+0x194/0xce0 [ 39.757242][ T402] ? validate_chain+0x130/0x9b0 [ 39.757380][ T402] validate_chain+0x71d/0x9b0 [ 39.757518][ T402] ? mark_lock+0x38/0x3e0 [ 39.757624][ T402] ? __pfx_validate_chain+0x10/0x10 [ 39.757842][ T402] ? hlock_class+0x4e/0x130 [ 39.757983][ T402] ? mark_lock+0x38/0x3e0 [ 39.758089][ T402] __lock_acquire+0xaf0/0x1570 [ 39.758245][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.758382][ T402] ? __get_task_comm+0x27/0x70 [ 39.758599][ T402] ? mark_lock+0x38/0x3e0 [ 39.758704][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.758842][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 39.758987][ T402] ? __get_task_comm+0x27/0x70 [ 39.759205][ T402] ? lock_acquire+0x32/0xc0 [ 39.759344][ T402] ? __get_task_comm+0x27/0x70 [ 39.759484][ T402] _raw_spin_lock+0x30/0x40 [ 39.759623][ T402] ? __get_task_comm+0x27/0x70 [ 39.759841][ T402] __get_task_comm+0x27/0x70 [ 39.759978][ T402] ref_tracker_alloc+0x2ee/0x490 [ 39.760116][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.760256][ T402] ? dev_get_by_index+0x177/0x270 [ 39.760393][ T402] ? netdev_get_by_index+0x5e/0x80 [ 39.760611][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 39.760749][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 39.760892][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 39.761029][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.761250][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 39.761386][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 39.761522][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.761692][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.761832][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 39.761972][ T402] ? vfs_write+0x9e5/0x10a0 [ 39.762107][ T402] ? ksys_write+0xf5/0x1e0 [ 39.762245][ T402] ? do_syscall_64+0xc6/0x1e0 [ 39.762461][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.762635][ T402] ? dev_get_by_index+0x177/0x270 [ 39.762774][ T402] netdev_get_by_index+0x5e/0x80 [ 39.762912][ T402] fib6_nh_init+0x3d8/0x15b0 [ 39.763132][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.763308][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.763450][ T402] ? kasan_save_track+0x14/0x30 [ 39.763590][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 39.763811][ T402] ? __kmalloc+0x1d7/0x3c0 [ 39.763949][ T402] ? fib6_get_table+0x116/0x290 [ 39.764085][ T402] ip6_route_info_create+0xf18/0x17d0 [ 39.764222][ T402] ? __lock_release+0x103/0x460 [ 39.764440][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.764611][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.764752][ T402] addrconf_f6i_alloc+0x265/0x560 [ 39.764894][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.765121][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 39.765259][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.765396][ T402] ? lock_acquire+0x32/0xc0 [ 39.765534][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.765677][ T402] addrconf_join_anycast+0x1c0/0x220 [ 39.765898][ T402] ? mark_lock+0x38/0x3e0 [ 39.766003][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.766175][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.766347][ T402] dev_forward_change+0x2a6/0x7b0 [ 39.766567][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 39.766707][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 39.766846][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 39.766984][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.767240][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.767411][ T402] ? trace_kmalloc+0x2a/0xe0 [ 39.767548][ T402] ? __kmalloc_node+0x220/0x400 [ 39.767686][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.767902][ T402] proc_sys_call_handler+0x403/0x5e0 [ 39.768043][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.768244][ T402] ? __lock_acquire+0xaf0/0x1570 [ 39.768401][ T402] vfs_write+0x9e5/0x10a0 [ 39.768595][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 39.768749][ T402] ? __pfx_vfs_write+0x10/0x10 [ 39.768900][ T402] ? find_held_lock+0x2c/0x110 [ 39.769054][ T402] ? __pfx___lock_release+0x10/0x10 [ 39.769292][ T402] ? __fget_light+0x53/0x1e0 [ 39.769446][ T402] ksys_write+0xf5/0x1e0 [ 39.769562][ T402] ? __pfx_ksys_write+0x10/0x10 [ 39.769722][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.769876][ T402] do_syscall_64+0xc6/0x1e0 [ 39.770027][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.770213][ T402] RIP: 0033:0x7f45ea1f1957 [ 39.770372][ T402] 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 [ 39.771042][ T402] RSP: 002b:00007ffd5c52bf98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.771250][ T402] RAX: ffffffffffffffda RBX: 000055a510c60360 RCX: 00007f45ea1f1957 [ 39.771535][ T402] RDX: 0000000000000002 RSI: 000055a510c603a0 RDI: 0000000000000005 [ 39.771742][ T402] RBP: 000055a510c624d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.771946][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.772234][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f45ea2a89c0 [ 39.772451][ T402]