[ 23.005247][ T217] dirname (217) used greatest stack depth: 24608 bytes left [ 30.529600][ T311] gre: GRE over IPv4 demultiplexor driver [ 30.544877][ T311] ip_gre: GRE over IPv4 tunneling driver [ 30.874940][ T317] ip (317) used greatest stack depth: 23920 bytes left [ 32.624278][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 36.638286][ T371] GACT probability NOT on [ 38.420028][ T387] ip (387) used greatest stack depth: 23680 bytes left [ 40.343199][ T404] [ 40.343305][ T404] ===================================================== [ 40.343481][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.343699][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 40.343836][ T404] ----------------------------------------------------- [ 40.344012][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.344216][ T404] ffff88800592cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.344485][ T404] [ 40.344485][ T404] and this task is already holding: [ 40.344685][ T404] ffff888005cdbd80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.344931][ T404] which would create a new lock dependency: [ 40.345095][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.345311][ T404] [ 40.345311][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.345544][ T404] (&ndev->lock){++--}-{2:2} [ 40.345548][ T404] [ 40.345548][ T404] ... which became SOFTIRQ-irq-safe at: [ 40.345895][ T404] __lock_acquire+0x797/0x1570 [ 40.346038][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.346172][ T404] _raw_write_lock+0x30/0x40 [ 40.346315][ T404] addrconf_rs_timer+0xa9/0x730 [ 40.346451][ T404] call_timer_fn+0x13b/0x230 [ 40.346595][ T404] __run_timers+0x545/0x810 [ 40.346731][ T404] run_timer_softirq+0xe8/0x1b0 [ 40.346867][ T404] __do_softirq+0x1f8/0x5df [ 40.347006][ T404] irq_exit_rcu+0x97/0xc0 [ 40.347146][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.347282][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.347452][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.347589][ T404] get_partial_node.part.0+0x1c5/0x3a0 [ 40.347730][ T404] ___slab_alloc+0xb70/0x10a0 [ 40.347865][ T404] kmalloc_trace+0x264/0x280 [ 40.348001][ T404] alloc_empty_backing_file+0x4d/0xf0 [ 40.348138][ T404] backing_file_open+0x26/0xf0 [ 40.348274][ T404] ovl_open_realfile+0x233/0x340 [ 40.348433][ T404] ovl_open+0x1aa/0x250 [ 40.348538][ T404] do_dentry_open+0x43c/0x1490 [ 40.348682][ T404] do_open+0x677/0xd90 [ 40.348786][ T404] path_openat+0x256/0x440 [ 40.348926][ T404] do_filp_open+0x1b3/0x3e0 [ 40.349072][ T404] do_sys_openat2+0x122/0x160 [ 40.349273][ T404] __x64_sys_openat+0x123/0x1e0 [ 40.349489][ T404] do_syscall_64+0xc6/0x1e0 [ 40.349720][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.349992][ T404] [ 40.349992][ T404] to a SOFTIRQ-irq-unsafe lock: [ 40.350258][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 40.350266][ T404] [ 40.350266][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 40.350813][ T404] ... [ 40.350816][ T404] __lock_acquire+0x797/0x1570 [ 40.351156][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.351381][ T404] _raw_spin_lock+0x30/0x40 [ 40.351607][ T404] set_mems_allowed+0x1d/0x210 [ 40.351821][ T404] kernel_init_freeable+0x72/0x310 [ 40.352039][ T404] kernel_init+0x20/0x200 [ 40.352263][ T404] ret_from_fork+0x31/0x70 [ 40.352488][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.352720][ T404] [ 40.352720][ T404] other info that might help us debug this: [ 40.352720][ T404] [ 40.353152][ T404] Possible interrupt unsafe locking scenario: [ 40.353152][ T404] [ 40.353483][ T404] CPU0 CPU1 [ 40.353702][ T404] ---- ---- [ 40.353923][ T404] lock(&p->alloc_lock); [ 40.354097][ T404] local_irq_disable(); [ 40.354393][ T404] lock(&ndev->lock); [ 40.354671][ T404] lock(&p->alloc_lock); [ 40.354947][ T404] [ 40.355119][ T404] lock(&ndev->lock); [ 40.355291][ T404] [ 40.355291][ T404] *** DEADLOCK *** [ 40.355291][ T404] [ 40.355611][ T404] 3 locks held by sysctl/404: [ 40.355837][ T404] #0: ffff88800683c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.356250][ T404] #1: ffffffffb39969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.356706][ T404] #2: ffff888005cdbd80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.357110][ T404] [ 40.357110][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.357535][ T404] -> (&ndev->lock){++--}-{2:2} { [ 40.357783][ T404] HARDIRQ-ON-W at: [ 40.357961][ T404] __lock_acquire+0x797/0x1570 [ 40.358250][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.358530][ T404] _raw_write_lock_bh+0x38/0x50 [ 40.358811][ T404] addrconf_permanent_addr+0x6e/0x670 [ 40.359091][ T404] addrconf_notify+0x749/0xd60 [ 40.359371][ T404] notifier_call_chain+0xcd/0x150 [ 40.359665][ T404] __dev_notify_flags+0xe6/0x250 [ 40.359948][ T404] dev_change_flags+0xec/0x160 [ 40.360238][ T404] do_setlink+0x7d6/0x21e0 [ 40.360518][ T404] __rtnl_newlink+0xaa7/0xd80 [ 40.360795][ T404] rtnl_newlink+0x63/0xa0 [ 40.361070][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.361354][ T404] netlink_rcv_skb+0x130/0x360 [ 40.361646][ T404] netlink_unicast+0x449/0x710 [ 40.361928][ T404] netlink_sendmsg+0x723/0xbe0 [ 40.362211][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 40.362493][ T404] ___sys_sendmsg+0xee/0x170 [ 40.362779][ T404] __sys_sendmsg+0xcd/0x170 [ 40.363062][ T404] do_syscall_64+0xc6/0x1e0 [ 40.363351][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.363687][ T404] HARDIRQ-ON-R at: [ 40.363858][ T404] __lock_acquire+0x797/0x1570 [ 40.364134][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.364422][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.364705][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.364991][ T404] inet6_fill_link_af+0x5e/0xe0 [ 40.365265][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.365546][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.365829][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.366157][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 40.366438][ T404] register_netdevice+0x1177/0x1690 [ 40.366728][ T404] register_netdev+0x20/0x40 [ 40.367004][ T404] sit_init_net+0x250/0x4f0 [ 40.367282][ T404] ops_init+0x9b/0x560 [ 40.367510][ T404] register_pernet_operations+0x2db/0x710 [ 40.367845][ T404] register_pernet_device+0x2a/0x60 [ 40.368124][ T404] sit_init+0x23/0xe0 [ 40.368352][ T404] do_one_initcall+0x8d/0x1e0 [ 40.368646][ T404] do_initcalls+0x1b2/0x3e0 [ 40.368927][ T404] kernel_init_freeable+0x232/0x310 [ 40.369200][ T404] kernel_init+0x20/0x200 [ 40.369492][ T404] ret_from_fork+0x31/0x70 [ 40.369775][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.370049][ T404] IN-SOFTIRQ-W at: [ 40.370219][ T404] __lock_acquire+0x797/0x1570 [ 40.370514][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.370796][ T404] _raw_write_lock+0x30/0x40 [ 40.371081][ T404] addrconf_rs_timer+0xa9/0x730 [ 40.371360][ T404] call_timer_fn+0x13b/0x230 [ 40.371649][ T404] __run_timers+0x545/0x810 [ 40.371927][ T404] run_timer_softirq+0xe8/0x1b0 [ 40.372216][ T404] __do_softirq+0x1f8/0x5df [ 40.372503][ T404] irq_exit_rcu+0x97/0xc0 [ 40.372786][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.373122][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.373461][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.373799][ T404] get_partial_node.part.0+0x1c5/0x3a0 [ 40.374088][ T404] ___slab_alloc+0xb70/0x10a0 [ 40.374392][ T404] kmalloc_trace+0x264/0x280 [ 40.374675][ T404] alloc_empty_backing_file+0x4d/0xf0 [ 40.374961][ T404] backing_file_open+0x26/0xf0 [ 40.375246][ T404] ovl_open_realfile+0x233/0x340 [ 40.375530][ T404] ovl_open+0x1aa/0x250 [ 40.375817][ T404] do_dentry_open+0x43c/0x1490 [ 40.376102][ T404] do_open+0x677/0xd90 [ 40.376341][ T404] path_openat+0x256/0x440 [ 40.376627][ T404] do_filp_open+0x1b3/0x3e0 [ 40.376911][ T404] do_sys_openat2+0x122/0x160 [ 40.377200][ T404] __x64_sys_openat+0x123/0x1e0 [ 40.377487][ T404] do_syscall_64+0xc6/0x1e0 [ 40.377781][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.378120][ T404] IN-SOFTIRQ-R at: [ 40.378297][ T404] __lock_acquire+0x797/0x1570 [ 40.378577][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.378855][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.379133][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 40.379409][ T404] addrconf_rs_timer+0x24a/0x730 [ 40.379690][ T404] call_timer_fn+0x13b/0x230 [ 40.379977][ T404] __run_timers+0x545/0x810 [ 40.380259][ T404] run_timer_softirq+0xe8/0x1b0 [ 40.380542][ T404] __do_softirq+0x1f8/0x5df [ 40.380820][ T404] irq_exit_rcu+0x97/0xc0 [ 40.381104][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.381453][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.381789][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.382130][ T404] get_partial_node.part.0+0x1c5/0x3a0 [ 40.382414][ T404] ___slab_alloc+0xb70/0x10a0 [ 40.382704][ T404] kmalloc_trace+0x264/0x280 [ 40.382986][ T404] alloc_empty_backing_file+0x4d/0xf0 [ 40.383434][ T404] backing_file_open+0x26/0xf0 [ 40.383719][ T404] ovl_open_realfile+0x233/0x340 [ 40.383999][ T404] ovl_open+0x1aa/0x250 [ 40.384441][ T404] do_dentry_open+0x43c/0x1490 [ 40.384725][ T404] do_open+0x677/0xd90 [ 40.384951][ T404] path_openat+0x256/0x440 [ 40.385227][ T404] do_filp_open+0x1b3/0x3e0 [ 40.385671][ T404] do_sys_openat2+0x122/0x160 [ 40.385951][ T404] __x64_sys_openat+0x123/0x1e0 [ 40.386232][ T404] do_syscall_64+0xc6/0x1e0 [ 40.386668][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.387001][ T404] INITIAL USE at: [ 40.387173][ T404] __lock_acquire+0x797/0x1570 [ 40.387455][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.387749][ T404] _raw_write_lock_bh+0x38/0x50 [ 40.388027][ T404] addrconf_permanent_addr+0x6e/0x670 [ 40.388308][ T404] addrconf_notify+0x749/0xd60 [ 40.388739][ T404] notifier_call_chain+0xcd/0x150 [ 40.389022][ T404] __dev_notify_flags+0xe6/0x250 [ 40.389303][ T404] dev_change_flags+0xec/0x160 [ 40.389594][ T404] do_setlink+0x7d6/0x21e0 [ 40.389874][ T404] __rtnl_newlink+0xaa7/0xd80 [ 40.390158][ T404] rtnl_newlink+0x63/0xa0 [ 40.390439][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.390876][ T404] netlink_rcv_skb+0x130/0x360 [ 40.391159][ T404] netlink_unicast+0x449/0x710 [ 40.391449][ T404] netlink_sendmsg+0x723/0xbe0 [ 40.391732][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 40.392017][ T404] ___sys_sendmsg+0xee/0x170 [ 40.392301][ T404] __sys_sendmsg+0xcd/0x170 [ 40.392585][ T404] do_syscall_64+0xc6/0x1e0 [ 40.393015][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.393349][ T404] INITIAL READ USE at: [ 40.393527][ T404] __lock_acquire+0x797/0x1570 [ 40.393961][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.394247][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.394537][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.394875][ T404] inet6_fill_link_af+0x5e/0xe0 [ 40.395311][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.395606][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.395945][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.396428][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 40.396704][ T404] register_netdevice+0x1177/0x1690 [ 40.397038][ T404] register_netdev+0x20/0x40 [ 40.397468][ T404] sit_init_net+0x250/0x4f0 [ 40.397756][ T404] ops_init+0x9b/0x560 [ 40.398031][ T404] register_pernet_operations+0x2db/0x710 [ 40.398664][ T404] register_pernet_device+0x2a/0x60 [ 40.398995][ T404] sit_init+0x23/0xe0 [ 40.399276][ T404] do_one_initcall+0x8d/0x1e0 [ 40.399715][ T404] do_initcalls+0x1b2/0x3e0 [ 40.400008][ T404] kernel_init_freeable+0x232/0x310 [ 40.400345][ T404] kernel_init+0x20/0x200 [ 40.400630][ T404] ret_from_fork+0x31/0x70 [ 40.400912][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.401188][ T404] } [ 40.401306][ T404] ... key at: [] __key.37+0x0/0x40 [ 40.401807][ T404] [ 40.401807][ T404] the dependencies between the lock to be acquired [ 40.401811][ T404] and SOFTIRQ-irq-unsafe lock: [ 40.402405][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.402641][ T404] HARDIRQ-ON-W at: [ 40.402819][ T404] __lock_acquire+0x797/0x1570 [ 40.403103][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.403382][ T404] _raw_spin_lock+0x30/0x40 [ 40.403825][ T404] set_mems_allowed+0x1d/0x210 [ 40.404105][ T404] kernel_init_freeable+0x72/0x310 [ 40.404392][ T404] kernel_init+0x20/0x200 [ 40.404688][ T404] ret_from_fork+0x31/0x70 [ 40.405115][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.405393][ T404] SOFTIRQ-ON-W at: [ 40.405565][ T404] __lock_acquire+0x797/0x1570 [ 40.405859][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.406292][ T404] _raw_spin_lock+0x30/0x40 [ 40.406578][ T404] set_mems_allowed+0x1d/0x210 [ 40.406863][ T404] kernel_init_freeable+0x72/0x310 [ 40.407296][ T404] kernel_init+0x20/0x200 [ 40.407575][ T404] ret_from_fork+0x31/0x70 [ 40.407866][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.408318][ T404] INITIAL USE at: [ 40.408490][ T404] __lock_acquire+0x797/0x1570 [ 40.408773][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.409053][ T404] _raw_spin_lock+0x30/0x40 [ 40.409487][ T404] set_mems_allowed+0x1d/0x210 [ 40.409766][ T404] kernel_init_freeable+0x72/0x310 [ 40.410051][ T404] kernel_init+0x20/0x200 [ 40.410332][ T404] ret_from_fork+0x31/0x70 [ 40.410770][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.411051][ T404] } [ 40.411169][ T404] ... key at: [] __key.387+0x0/0x40 [ 40.411657][ T404] ... acquired at: [ 40.411830][ T404] check_prev_add+0x194/0xce0 [ 40.412057][ T404] validate_chain+0x71d/0x9b0 [ 40.412285][ T404] __lock_acquire+0xaf0/0x1570 [ 40.412508][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.412749][ T404] _raw_spin_lock+0x30/0x40 [ 40.412975][ T404] __get_task_comm+0x27/0x70 [ 40.413200][ T404] ref_tracker_alloc+0x2ee/0x490 [ 40.413425][ T404] netdev_get_by_index+0x5e/0x80 [ 40.413802][ T404] fib6_nh_init+0x3d8/0x15b0 [ 40.414031][ T404] ip6_route_info_create+0xf18/0x17d0 [ 40.414265][ T404] addrconf_f6i_alloc+0x265/0x560 [ 40.414512][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.414742][ T404] addrconf_join_anycast+0x1c0/0x220 [ 40.414968][ T404] dev_forward_change+0x2a6/0x7b0 [ 40.415189][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 40.415468][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 40.415985][ T404] proc_sys_call_handler+0x403/0x5e0 [ 40.416222][ T404] vfs_write+0x9e5/0x10a0 [ 40.416449][ T404] ksys_write+0xf5/0x1e0 [ 40.416678][ T404] do_syscall_64+0xc6/0x1e0 [ 40.416904][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.417181][ T404] [ 40.417300][ T404] [ 40.417300][ T404] stack backtrace: [ 40.417573][ T404] CPU: 1 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.417920][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.418424][ T404] Call Trace: [ 40.418596][ T404] [ 40.418716][ T404] dump_stack_lvl+0x82/0xd0 [ 40.418949][ T404] print_bad_irq_dependency+0x957/0xd40 [ 40.419175][ T404] ? hlock_class+0x4e/0x130 [ 40.419404][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.419684][ T404] ? __pfx_usage_skip+0x10/0x10 [ 40.419913][ T404] ? __bfs+0x246/0x650 [ 40.420092][ T404] ? __pfx_usage_match+0x10/0x10 [ 40.420321][ T404] check_irq_usage+0x596/0x850 [ 40.420550][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 40.420785][ T404] ? __bfs+0x246/0x650 [ 40.420956][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 40.421182][ T404] ? check_path.constprop.0+0x24/0x50 [ 40.421403][ T404] ? check_noncircular+0x14c/0x3e0 [ 40.421625][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 40.421870][ T404] ? check_prev_add+0x194/0xce0 [ 40.422090][ T404] check_prev_add+0x194/0xce0 [ 40.422315][ T404] ? validate_chain+0x130/0x9b0 [ 40.422541][ T404] validate_chain+0x71d/0x9b0 [ 40.422772][ T404] ? mark_lock+0x38/0x3e0 [ 40.422942][ T404] ? __pfx_validate_chain+0x10/0x10 [ 40.423166][ T404] ? hlock_class+0x4e/0x130 [ 40.423396][ T404] ? mark_lock+0x38/0x3e0 [ 40.423565][ T404] __lock_acquire+0xaf0/0x1570 [ 40.423799][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.424020][ T404] ? __get_task_comm+0x27/0x70 [ 40.424243][ T404] ? mark_lock+0x38/0x3e0 [ 40.424419][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.424644][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 40.424869][ T404] ? __get_task_comm+0x27/0x70 [ 40.425089][ T404] ? lock_acquire+0x32/0xc0 [ 40.425307][ T404] ? __get_task_comm+0x27/0x70 [ 40.425538][ T404] _raw_spin_lock+0x30/0x40 [ 40.425760][ T404] ? __get_task_comm+0x27/0x70 [ 40.425982][ T404] __get_task_comm+0x27/0x70 [ 40.426214][ T404] ref_tracker_alloc+0x2ee/0x490 [ 40.426437][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.426808][ T404] ? dev_get_by_index+0x177/0x270 [ 40.427025][ T404] ? netdev_get_by_index+0x5e/0x80 [ 40.427238][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 40.427455][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 40.427692][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 40.427912][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.428129][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 40.428343][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 40.428558][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.428832][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.429055][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 40.429285][ T404] ? vfs_write+0x9e5/0x10a0 [ 40.429510][ T404] ? ksys_write+0xf5/0x1e0 [ 40.429883][ T404] ? do_syscall_64+0xc6/0x1e0 [ 40.430108][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.430384][ T404] ? dev_get_by_index+0x177/0x270 [ 40.430617][ T404] netdev_get_by_index+0x5e/0x80 [ 40.430838][ T404] fib6_nh_init+0x3d8/0x15b0 [ 40.431061][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.431347][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.431571][ T404] ? kasan_save_track+0x14/0x30 [ 40.431793][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 40.432017][ T404] ? __kmalloc+0x1d7/0x3c0 [ 40.432244][ T404] ? fib6_get_table+0x116/0x290 [ 40.432467][ T404] ip6_route_info_create+0xf18/0x17d0 [ 40.432841][ T404] ? __lock_release+0x103/0x460 [ 40.433065][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.433339][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.433574][ T404] addrconf_f6i_alloc+0x265/0x560 [ 40.433798][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.434024][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 40.434245][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.434481][ T404] ? lock_acquire+0x32/0xc0 [ 40.434853][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.435079][ T404] addrconf_join_anycast+0x1c0/0x220 [ 40.435322][ T404] ? mark_lock+0x38/0x3e0 [ 40.435489][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.435909][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.436185][ T404] dev_forward_change+0x2a6/0x7b0 [ 40.436410][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 40.436633][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 40.437152][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 40.437374][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.437656][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.437928][ T404] ? trace_kmalloc+0x2a/0xe0 [ 40.438294][ T404] ? __kmalloc_node+0x220/0x400 [ 40.438521][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.438744][ T404] proc_sys_call_handler+0x403/0x5e0 [ 40.438966][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.439381][ T404] ? __lock_acquire+0xaf0/0x1570 [ 40.439614][ T404] vfs_write+0x9e5/0x10a0 [ 40.439783][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 40.440004][ T404] ? __pfx_vfs_write+0x10/0x10 [ 40.440231][ T404] ? find_held_lock+0x2c/0x110 [ 40.440602][ T404] ? __pfx___lock_release+0x10/0x10 [ 40.440823][ T404] ? __fget_light+0x53/0x1e0 [ 40.441045][ T404] ksys_write+0xf5/0x1e0 [ 40.441213][ T404] ? __pfx_ksys_write+0x10/0x10 [ 40.441580][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.441814][ T404] do_syscall_64+0xc6/0x1e0 [ 40.442033][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.442318][ T404] RIP: 0033:0x7fb98fc45957 [ 40.442711][ T404] 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 [ 40.443494][ T404] RSP: 002b:00007ffe7625a458 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.443849][ T404] RAX: ffffffffffffffda RBX: 00005615242ea360 RCX: 00007fb98fc45957 [ 40.444179][ T404] RDX: 0000000000000002 RSI: 00005615242ea3a0 RDI: 0000000000000005 [ 40.444527][ T404] RBP: 00005615242ec4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.445013][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.445347][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fb98fcfc9c0 [ 40.445686][ T404]