[ 30.343774][ T310] gre: GRE over IPv4 demultiplexor driver [ 30.362968][ T310] ip_gre: GRE over IPv4 tunneling driver [ 32.535195][ T332] 8021q: 802.1Q VLAN Support v1.8 [ 36.681505][ T370] GACT probability NOT on [ 40.286309][ T403] [ 40.286493][ T403] ===================================================== [ 40.286689][ T403] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.286915][ T403] 6.9.0-rc1-virtme #1 Not tainted [ 40.287066][ T403] ----------------------------------------------------- [ 40.287254][ T403] sysctl/403 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.287475][ T403] ffff888007924ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.287762][ T403] [ 40.287762][ T403] and this task is already holding: [ 40.287987][ T403] ffff8880074cd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.288269][ T403] which would create a new lock dependency: [ 40.288456][ T403] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.288687][ T403] [ 40.288687][ T403] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.288961][ T403] (&ndev->lock){++--}-{2:2} [ 40.288965][ T403] [ 40.288965][ T403] ... which became SOFTIRQ-irq-safe at: [ 40.289335][ T403] __lock_acquire+0x797/0x1570 [ 40.289493][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.289644][ T403] _raw_write_lock+0x30/0x40 [ 40.289797][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.289946][ T403] call_timer_fn+0x13b/0x230 [ 40.290107][ T403] __run_timers+0x545/0x810 [ 40.290262][ T403] timer_expire_remote+0x9b/0xe0 [ 40.290414][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.290570][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.290722][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.290878][ T403] __do_softirq+0x1f8/0x5df [ 40.291038][ T403] irq_exit_rcu+0x97/0xc0 [ 40.291191][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.291344][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.291536][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.291687][ T403] qlist_free_all+0x4c/0x140 [ 40.291837][ T403] kasan_quarantine_reduce+0x192/0x1e0 [ 40.291999][ T403] __kasan_slab_alloc+0x49/0x70 [ 40.292161][ T403] kmem_cache_alloc+0xef/0x270 [ 40.292317][ T403] getname_flags+0x53/0x3d0 [ 40.292469][ T403] do_sys_openat2+0xdb/0x160 [ 40.292621][ T403] __x64_sys_openat+0x123/0x1e0 [ 40.292785][ T403] do_syscall_64+0xc6/0x1e0 [ 40.292935][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.293120][ T403] [ 40.293120][ T403] to a SOFTIRQ-irq-unsafe lock: [ 40.293312][ T403] (&p->alloc_lock){+.+.}-{2:2} [ 40.293317][ T403] [ 40.293317][ T403] ... which became SOFTIRQ-irq-unsafe at: [ 40.293694][ T403] ... [ 40.293696][ T403] __lock_acquire+0x797/0x1570 [ 40.293923][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.294075][ T403] _raw_spin_lock+0x30/0x40 [ 40.294230][ T403] set_mems_allowed+0x1d/0x210 [ 40.294382][ T403] kernel_init_freeable+0x72/0x310 [ 40.294543][ T403] kernel_init+0x20/0x200 [ 40.294700][ T403] ret_from_fork+0x31/0x70 [ 40.294855][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.295010][ T403] [ 40.295010][ T403] other info that might help us debug this: [ 40.295010][ T403] [ 40.295309][ T403] Possible interrupt unsafe locking scenario: [ 40.295309][ T403] [ 40.295533][ T403] CPU0 CPU1 [ 40.295683][ T403] ---- ---- [ 40.295832][ T403] lock(&p->alloc_lock); [ 40.295953][ T403] local_irq_disable(); [ 40.296144][ T403] lock(&ndev->lock); [ 40.296329][ T403] lock(&p->alloc_lock); [ 40.296521][ T403] [ 40.296635][ T403] lock(&ndev->lock); [ 40.296755][ T403] [ 40.296755][ T403] *** DEADLOCK *** [ 40.296755][ T403] [ 40.296982][ T403] 3 locks held by sysctl/403: [ 40.297135][ T403] #0: ffff88800602c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.297411][ T403] #1: ffffffffb91969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.297724][ T403] #2: ffff8880074cd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.297995][ T403] [ 40.297995][ T403] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.298290][ T403] -> (&ndev->lock){++--}-{2:2} { [ 40.298445][ T403] HARDIRQ-ON-W at: [ 40.298564][ T403] __lock_acquire+0x797/0x1570 [ 40.298756][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.298948][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.299146][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.299338][ T403] addrconf_notify+0x749/0xd60 [ 40.299533][ T403] notifier_call_chain+0xcd/0x150 [ 40.299726][ T403] __dev_notify_flags+0xe6/0x250 [ 40.299918][ T403] dev_change_flags+0xec/0x160 [ 40.300112][ T403] do_setlink+0x7d6/0x21e0 [ 40.300304][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.300499][ T403] rtnl_newlink+0x63/0xa0 [ 40.300693][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.300886][ T403] netlink_rcv_skb+0x130/0x360 [ 40.301091][ T403] netlink_unicast+0x449/0x710 [ 40.301289][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.301481][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.301671][ T403] ___sys_sendmsg+0xee/0x170 [ 40.301862][ T403] __sys_sendmsg+0xcd/0x170 [ 40.302058][ T403] do_syscall_64+0xc6/0x1e0 [ 40.302250][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.302481][ T403] HARDIRQ-ON-R at: [ 40.302599][ T403] __lock_acquire+0x797/0x1570 [ 40.302793][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.302982][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.303182][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.303387][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.303582][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.303769][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.303964][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.304198][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.304390][ T403] register_netdevice+0x1177/0x1690 [ 40.304586][ T403] register_netdev+0x20/0x40 [ 40.304781][ T403] sit_init_net+0x250/0x4f0 [ 40.304981][ T403] ops_init+0x9b/0x560 [ 40.305134][ T403] register_pernet_operations+0x2db/0x710 [ 40.305379][ T403] register_pernet_device+0x2a/0x60 [ 40.305569][ T403] sit_init+0x23/0xe0 [ 40.305725][ T403] do_one_initcall+0x8d/0x1e0 [ 40.305925][ T403] do_initcalls+0x1b2/0x3e0 [ 40.306128][ T403] kernel_init_freeable+0x232/0x310 [ 40.306326][ T403] kernel_init+0x20/0x200 [ 40.306518][ T403] ret_from_fork+0x31/0x70 [ 40.306712][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.306917][ T403] IN-SOFTIRQ-W at: [ 40.307033][ T403] __lock_acquire+0x797/0x1570 [ 40.307224][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.307416][ T403] _raw_write_lock+0x30/0x40 [ 40.307612][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.307800][ T403] call_timer_fn+0x13b/0x230 [ 40.307992][ T403] __run_timers+0x545/0x810 [ 40.308185][ T403] timer_expire_remote+0x9b/0xe0 [ 40.308382][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.308576][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.308779][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.308975][ T403] __do_softirq+0x1f8/0x5df [ 40.309166][ T403] irq_exit_rcu+0x97/0xc0 [ 40.309366][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.309606][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.309854][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.310099][ T403] qlist_free_all+0x4c/0x140 [ 40.310294][ T403] kasan_quarantine_reduce+0x192/0x1e0 [ 40.310488][ T403] __kasan_slab_alloc+0x49/0x70 [ 40.310685][ T403] kmem_cache_alloc+0xef/0x270 [ 40.310888][ T403] getname_flags+0x53/0x3d0 [ 40.311089][ T403] do_sys_openat2+0xdb/0x160 [ 40.311283][ T403] __x64_sys_openat+0x123/0x1e0 [ 40.311476][ T403] do_syscall_64+0xc6/0x1e0 [ 40.311672][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.311902][ T403] IN-SOFTIRQ-R at: [ 40.312017][ T403] __lock_acquire+0x797/0x1570 [ 40.312206][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.312397][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.312601][ T403] ipv6_get_lladdr+0xa9/0x3e0 [ 40.312799][ T403] addrconf_rs_timer+0x24a/0x730 [ 40.312989][ T403] call_timer_fn+0x13b/0x230 [ 40.313182][ T403] __run_timers+0x545/0x810 [ 40.313383][ T403] timer_expire_remote+0x9b/0xe0 [ 40.313581][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.313799][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.313993][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.314187][ T403] __do_softirq+0x1f8/0x5df [ 40.314386][ T403] irq_exit_rcu+0x97/0xc0 [ 40.314581][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.314808][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.315041][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.315272][ T403] qlist_free_all+0x4c/0x140 [ 40.315460][ T403] kasan_quarantine_reduce+0x192/0x1e0 [ 40.315653][ T403] __kasan_slab_alloc+0x49/0x70 [ 40.315844][ T403] kmem_cache_alloc+0xef/0x270 [ 40.316034][ T403] getname_flags+0x53/0x3d0 [ 40.316224][ T403] do_sys_openat2+0xdb/0x160 [ 40.316414][ T403] __x64_sys_openat+0x123/0x1e0 [ 40.316708][ T403] do_syscall_64+0xc6/0x1e0 [ 40.316911][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.317163][ T403] INITIAL USE at: [ 40.317287][ T403] __lock_acquire+0x797/0x1570 [ 40.317495][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.317696][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.317899][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.318176][ T403] addrconf_notify+0x749/0xd60 [ 40.318386][ T403] notifier_call_chain+0xcd/0x150 [ 40.318594][ T403] __dev_notify_flags+0xe6/0x250 [ 40.318801][ T403] dev_change_flags+0xec/0x160 [ 40.319166][ T403] do_setlink+0x7d6/0x21e0 [ 40.319371][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.319575][ T403] rtnl_newlink+0x63/0xa0 [ 40.319877][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.320085][ T403] netlink_rcv_skb+0x130/0x360 [ 40.320292][ T403] netlink_unicast+0x449/0x710 [ 40.320498][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.320798][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.321019][ T403] ___sys_sendmsg+0xee/0x170 [ 40.321224][ T403] __sys_sendmsg+0xcd/0x170 [ 40.321442][ T403] do_syscall_64+0xc6/0x1e0 [ 40.321655][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.321906][ T403] INITIAL READ USE at: [ 40.322045][ T403] __lock_acquire+0x797/0x1570 [ 40.322337][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.322542][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.322753][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.323105][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.323308][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.323516][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.323847][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.324095][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.324307][ T403] register_netdevice+0x1177/0x1690 [ 40.324638][ T403] register_netdev+0x20/0x40 [ 40.324858][ T403] sit_init_net+0x250/0x4f0 [ 40.325062][ T403] ops_init+0x9b/0x560 [ 40.325348][ T403] register_pernet_operations+0x2db/0x710 [ 40.325604][ T403] register_pernet_device+0x2a/0x60 [ 40.325851][ T403] sit_init+0x23/0xe0 [ 40.326143][ T403] do_one_initcall+0x8d/0x1e0 [ 40.326368][ T403] do_initcalls+0x1b2/0x3e0 [ 40.326580][ T403] kernel_init_freeable+0x232/0x310 [ 40.326826][ T403] kernel_init+0x20/0x200 [ 40.327127][ T403] ret_from_fork+0x31/0x70 [ 40.327336][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.327536][ T403] } [ 40.327622][ T403] ... key at: [] __key.37+0x0/0x40 [ 40.327954][ T403] [ 40.327954][ T403] the dependencies between the lock to be acquired [ 40.327956][ T403] and SOFTIRQ-irq-unsafe lock: [ 40.328413][ T403] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.328676][ T403] HARDIRQ-ON-W at: [ 40.328806][ T403] __lock_acquire+0x797/0x1570 [ 40.329013][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.329223][ T403] _raw_spin_lock+0x30/0x40 [ 40.329528][ T403] set_mems_allowed+0x1d/0x210 [ 40.329738][ T403] kernel_init_freeable+0x72/0x310 [ 40.329942][ T403] kernel_init+0x20/0x200 [ 40.330228][ T403] ret_from_fork+0x31/0x70 [ 40.330447][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.330655][ T403] SOFTIRQ-ON-W at: [ 40.330784][ T403] __lock_acquire+0x797/0x1570 [ 40.331102][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.331316][ T403] _raw_spin_lock+0x30/0x40 [ 40.331522][ T403] set_mems_allowed+0x1d/0x210 [ 40.331913][ T403] kernel_init_freeable+0x72/0x310 [ 40.332131][ T403] kernel_init+0x20/0x200 [ 40.332348][ T403] ret_from_fork+0x31/0x70 [ 40.332566][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.332873][ T403] INITIAL USE at: [ 40.332995][ T403] __lock_acquire+0x797/0x1570 [ 40.333199][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.333415][ T403] _raw_spin_lock+0x30/0x40 [ 40.333626][ T403] set_mems_allowed+0x1d/0x210 [ 40.333831][ T403] kernel_init_freeable+0x72/0x310 [ 40.334042][ T403] kernel_init+0x20/0x200 [ 40.334347][ T403] ret_from_fork+0x31/0x70 [ 40.334570][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.334776][ T403] } [ 40.334859][ T403] ... key at: [] __key.387+0x0/0x40 [ 40.335189][ T403] ... acquired at: [ 40.335313][ T403] check_prev_add+0x194/0xce0 [ 40.335485][ T403] validate_chain+0x71d/0x9b0 [ 40.335650][ T403] __lock_acquire+0xaf0/0x1570 [ 40.335897][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.336060][ T403] _raw_spin_lock+0x30/0x40 [ 40.336224][ T403] __get_task_comm+0x27/0x70 [ 40.336388][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.336641][ T403] netdev_get_by_index+0x5e/0x80 [ 40.336805][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.336966][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.337130][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.337373][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.337539][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.337699][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.337865][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.338155][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.338318][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.338484][ T403] vfs_write+0x9e5/0x10a0 [ 40.338649][ T403] ksys_write+0xf5/0x1e0 [ 40.338814][ T403] do_syscall_64+0xc6/0x1e0 [ 40.339058][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.339261][ T403] [ 40.339345][ T403] [ 40.339345][ T403] stack backtrace: [ 40.339548][ T403] CPU: 0 PID: 403 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.339904][ T403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.340265][ T403] Call Trace: [ 40.340391][ T403] [ 40.340475][ T403] dump_stack_lvl+0x82/0xd0 [ 40.340640][ T403] print_bad_irq_dependency+0x957/0xd40 [ 40.340805][ T403] ? hlock_class+0x4e/0x130 [ 40.340982][ T403] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.341272][ T403] ? __pfx_usage_skip+0x10/0x10 [ 40.341438][ T403] ? __bfs+0x246/0x650 [ 40.341559][ T403] ? __pfx_usage_match+0x10/0x10 [ 40.341720][ T403] check_irq_usage+0x596/0x850 [ 40.341882][ T403] ? __pfx_check_irq_usage+0x10/0x10 [ 40.342136][ T403] ? __bfs+0x246/0x650 [ 40.342256][ T403] ? __pfx_hlock_conflict+0x10/0x10 [ 40.342427][ T403] ? check_path.constprop.0+0x24/0x50 [ 40.342587][ T403] ? check_noncircular+0x14c/0x3e0 [ 40.342827][ T403] ? __pfx_check_noncircular+0x10/0x10 [ 40.342991][ T403] ? check_prev_add+0x194/0xce0 [ 40.343153][ T403] check_prev_add+0x194/0xce0 [ 40.343315][ T403] ? validate_chain+0x130/0x9b0 [ 40.343555][ T403] validate_chain+0x71d/0x9b0 [ 40.343718][ T403] ? mark_lock+0x38/0x3e0 [ 40.343843][ T403] ? __pfx_validate_chain+0x10/0x10 [ 40.344010][ T403] ? hlock_class+0x4e/0x130 [ 40.344172][ T403] ? mark_lock+0x38/0x3e0 [ 40.344460][ T403] __lock_acquire+0xaf0/0x1570 [ 40.344628][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.344786][ T403] ? __get_task_comm+0x27/0x70 [ 40.344946][ T403] ? mark_lock+0x38/0x3e0 [ 40.345069][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.345312][ T403] ? trace_lock_acquire+0x135/0x1c0 [ 40.345474][ T403] ? __get_task_comm+0x27/0x70 [ 40.345637][ T403] ? lock_acquire+0x32/0xc0 [ 40.345797][ T403] ? __get_task_comm+0x27/0x70 [ 40.346037][ T403] _raw_spin_lock+0x30/0x40 [ 40.346199][ T403] ? __get_task_comm+0x27/0x70 [ 40.346357][ T403] __get_task_comm+0x27/0x70 [ 40.346517][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.346772][ T403] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.346936][ T403] ? dev_get_by_index+0x177/0x270 [ 40.347094][ T403] ? netdev_get_by_index+0x5e/0x80 [ 40.347255][ T403] ? fib6_nh_init+0x3d8/0x15b0 [ 40.347420][ T403] ? ip6_route_info_create+0xf18/0x17d0 [ 40.347582][ T403] ? addrconf_f6i_alloc+0x265/0x560 [ 40.347746][ T403] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.347907][ T403] ? addrconf_join_anycast+0x1c0/0x220 [ 40.348073][ T403] ? dev_forward_change+0x2a6/0x7b0 [ 40.348316][ T403] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.348518][ T403] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.348681][ T403] ? proc_sys_call_handler+0x403/0x5e0 [ 40.348845][ T403] ? vfs_write+0x9e5/0x10a0 [ 40.349103][ T403] ? ksys_write+0xf5/0x1e0 [ 40.349260][ T403] ? do_syscall_64+0xc6/0x1e0 [ 40.349423][ T403] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.349634][ T403] ? dev_get_by_index+0x177/0x270 [ 40.349883][ T403] netdev_get_by_index+0x5e/0x80 [ 40.350054][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.350217][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.350418][ T403] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.350664][ T403] ? kasan_save_track+0x14/0x30 [ 40.350829][ T403] ? __kasan_kmalloc+0x7f/0x90 [ 40.351006][ T403] ? __kmalloc+0x1d7/0x3c0 [ 40.351191][ T403] ? fib6_get_table+0x116/0x290 [ 40.351456][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.351606][ T403] ? __lock_release+0x103/0x460 [ 40.351765][ T403] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.351983][ T403] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.352231][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.352406][ T403] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.352570][ T403] ? do_raw_write_lock+0x122/0x3b0 [ 40.352731][ T403] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.352982][ T403] ? lock_acquire+0x32/0xc0 [ 40.353144][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.353311][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.353472][ T403] ? mark_lock+0x38/0x3e0 [ 40.353597][ T403] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.353897][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.354099][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.354279][ T403] ? __pfx_dev_forward_change+0x10/0x10 [ 40.354448][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.354617][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.354782][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.354982][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.355271][ T403] ? trace_kmalloc+0x2a/0xe0 [ 40.355431][ T403] ? __kmalloc_node+0x220/0x400 [ 40.355590][ T403] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.355761][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.355993][ T403] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.356180][ T403] ? __lock_acquire+0xaf0/0x1570 [ 40.356333][ T403] vfs_write+0x9e5/0x10a0 [ 40.356448][ T403] ? do_user_addr_fault+0x449/0xbe0 [ 40.356601][ T403] ? __pfx_vfs_write+0x10/0x10 [ 40.356861][ T403] ? find_held_lock+0x2c/0x110 [ 40.357010][ T403] ? __pfx___lock_release+0x10/0x10 [ 40.357169][ T403] ? __fget_light+0x53/0x1e0 [ 40.357330][ T403] ksys_write+0xf5/0x1e0 [ 40.357445][ T403] ? __pfx_ksys_write+0x10/0x10 [ 40.357596][ T403] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.357747][ T403] do_syscall_64+0xc6/0x1e0 [ 40.357902][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.358168][ T403] RIP: 0033:0x7f193270f957 [ 40.358326][ 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 [ 40.358955][ T403] RSP: 002b:00007ffefc3b04e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.359189][ T403] RAX: ffffffffffffffda RBX: 000055f27b783360 RCX: 00007f193270f957 [ 40.359416][ T403] RDX: 0000000000000002 RSI: 000055f27b7833a0 RDI: 0000000000000005 [ 40.359731][ T403] RBP: 000055f27b7854d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.359957][ T403] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.360220][ T403] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f19327c69c0 [ 40.360451][ T403]