[ 31.650015][ T309] gre: GRE over IPv4 demultiplexor driver [ 31.670236][ T309] ip_gre: GRE over IPv4 tunneling driver [ 33.942569][ T331] 8021q: 802.1Q VLAN Support v1.8 [ 38.312654][ T369] GACT probability NOT on [ 41.980418][ T402] [ 41.980530][ T402] ===================================================== [ 41.980703][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 41.980906][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 41.981142][ T402] ----------------------------------------------------- [ 41.981328][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 41.981669][ T402] ffff888005314ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 41.981950][ T402] [ 41.981950][ T402] and this task is already holding: [ 41.982180][ T402] ffff8880055ba580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.982448][ T402] which would create a new lock dependency: [ 41.982652][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 41.982886][ T402] [ 41.982886][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 41.983142][ T402] (&ndev->lock){++--}-{2:2} [ 41.983145][ T402] [ 41.983145][ T402] ... which became SOFTIRQ-irq-safe at: [ 41.983508][ T402] __lock_acquire+0x797/0x1570 [ 41.983662][ T402] lock_acquire.part.0+0xeb/0x330 [ 41.983813][ T402] _raw_write_lock+0x30/0x40 [ 41.983966][ T402] addrconf_rs_timer+0xa9/0x730 [ 41.984122][ T402] call_timer_fn+0x13b/0x230 [ 41.984277][ T402] __run_timers+0x545/0x810 [ 41.984427][ T402] timer_expire_remote+0x9b/0xe0 [ 41.984576][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 41.984728][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.984877][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 41.985029][ T402] __do_softirq+0x1f8/0x5df [ 41.985176][ T402] irq_exit_rcu+0x97/0xc0 [ 41.985328][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.985482][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.985670][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 41.985820][ T402] p9_virtio_request+0x433/0x580 [ 41.985972][ T402] p9_client_rpc+0x2ad/0x930 [ 41.986122][ T402] p9_client_walk+0x1b0/0x650 [ 41.986272][ T402] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 41.986423][ T402] __lookup_slow+0x209/0x3c0 [ 41.986579][ T402] walk_component+0x2ab/0x4f0 [ 41.986733][ T402] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 41.986919][ T402] path_openat+0x1be/0x440 [ 41.987070][ T402] do_filp_open+0x1b3/0x3e0 [ 41.987221][ T402] do_sys_openat2+0x122/0x160 [ 41.987375][ T402] __x64_sys_openat+0x123/0x1e0 [ 41.987524][ T402] do_syscall_64+0xc6/0x1e0 [ 41.987678][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.987864][ T402] [ 41.987864][ T402] to a SOFTIRQ-irq-unsafe lock: [ 41.988056][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 41.988060][ T402] [ 41.988060][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 41.988422][ T402] ... [ 41.988423][ T402] __lock_acquire+0x797/0x1570 [ 41.988650][ T402] lock_acquire.part.0+0xeb/0x330 [ 41.988812][ T402] _raw_spin_lock+0x30/0x40 [ 41.988966][ T402] set_mems_allowed+0x1d/0x210 [ 41.989118][ T402] kernel_init_freeable+0x72/0x310 [ 41.989277][ T402] kernel_init+0x20/0x200 [ 41.989426][ T402] ret_from_fork+0x31/0x70 [ 41.989577][ T402] ret_from_fork_asm+0x1a/0x30 [ 41.989727][ T402] [ 41.989727][ T402] other info that might help us debug this: [ 41.989727][ T402] [ 41.990021][ T402] Possible interrupt unsafe locking scenario: [ 41.990021][ T402] [ 41.990242][ T402] CPU0 CPU1 [ 41.990391][ T402] ---- ---- [ 41.990542][ T402] lock(&p->alloc_lock); [ 41.990657][ T402] local_irq_disable(); [ 41.990841][ T402] lock(&ndev->lock); [ 41.991028][ T402] lock(&p->alloc_lock); [ 41.991217][ T402] [ 41.991329][ T402] lock(&ndev->lock); [ 41.991447][ T402] [ 41.991447][ T402] *** DEADLOCK *** [ 41.991447][ T402] [ 41.991665][ T402] 3 locks held by sysctl/402: [ 41.991819][ T402] #0: ffff888005a613f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 41.992088][ T402] #1: ffffffffbd9969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 41.992391][ T402] #2: ffff8880055ba580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.992747][ T402] [ 41.992747][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 41.993044][ T402] -> (&ndev->lock){++--}-{2:2} { [ 41.993284][ T402] HARDIRQ-ON-W at: [ 41.993400][ T402] __lock_acquire+0x797/0x1570 [ 41.993590][ T402] lock_acquire.part.0+0xeb/0x330 [ 41.993777][ T402] _raw_write_lock_bh+0x38/0x50 [ 41.994051][ T402] addrconf_permanent_addr+0x6e/0x670 [ 41.994240][ T402] addrconf_notify+0x749/0xd60 [ 41.994430][ T402] notifier_call_chain+0xcd/0x150 [ 41.994617][ T402] __dev_notify_flags+0xe6/0x250 [ 41.994808][ T402] dev_change_flags+0xec/0x160 [ 41.994997][ T402] do_setlink+0x7d6/0x21e0 [ 41.995189][ T402] __rtnl_newlink+0xaa7/0xd80 [ 41.995469][ T402] rtnl_newlink+0x63/0xa0 [ 41.995659][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.995848][ T402] netlink_rcv_skb+0x130/0x360 [ 41.996125][ T402] netlink_unicast+0x449/0x710 [ 41.996317][ T402] netlink_sendmsg+0x723/0xbe0 [ 41.996507][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 41.996703][ T402] ___sys_sendmsg+0xee/0x170 [ 41.996976][ T402] __sys_sendmsg+0xcd/0x170 [ 41.997168][ T402] do_syscall_64+0xc6/0x1e0 [ 41.997358][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.997752][ T402] HARDIRQ-ON-R at: [ 41.997866][ T402] __lock_acquire+0x797/0x1570 [ 41.998056][ T402] lock_acquire.part.0+0xeb/0x330 [ 41.998250][ T402] _raw_read_lock_bh+0x44/0x80 [ 41.998522][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.998711][ T402] inet6_fill_link_af+0x5e/0xe0 [ 41.999058][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.999334][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.999524][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.999755][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 42.000036][ T402] register_netdevice+0x1177/0x1690 [ 42.000228][ T402] register_netdev+0x20/0x40 [ 42.000419][ T402] sit_init_net+0x250/0x4f0 [ 42.000609][ T402] ops_init+0x9b/0x560 [ 42.000765][ T402] register_pernet_operations+0x2db/0x710 [ 42.000996][ T402] register_pernet_device+0x2a/0x60 [ 42.001184][ T402] sit_init+0x23/0xe0 [ 42.001338][ T402] do_one_initcall+0x8d/0x1e0 [ 42.001528][ T402] do_initcalls+0x1b2/0x3e0 [ 42.001717][ T402] kernel_init_freeable+0x232/0x310 [ 42.001903][ T402] kernel_init+0x20/0x200 [ 42.002186][ T402] ret_from_fork+0x31/0x70 [ 42.002381][ T402] ret_from_fork_asm+0x1a/0x30 [ 42.002572][ T402] IN-SOFTIRQ-W at: [ 42.002687][ T402] __lock_acquire+0x797/0x1570 [ 42.002881][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.003072][ T402] _raw_write_lock+0x30/0x40 [ 42.003268][ T402] addrconf_rs_timer+0xa9/0x730 [ 42.003540][ T402] call_timer_fn+0x13b/0x230 [ 42.003734][ T402] __run_timers+0x545/0x810 [ 42.003921][ T402] timer_expire_remote+0x9b/0xe0 [ 42.004191][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 42.004383][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 42.004573][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 42.004760][ T402] __do_softirq+0x1f8/0x5df [ 42.005034][ T402] irq_exit_rcu+0x97/0xc0 [ 42.005225][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 42.005452][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 42.005759][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 42.005985][ T402] p9_virtio_request+0x433/0x580 [ 42.006175][ T402] p9_client_rpc+0x2ad/0x930 [ 42.006461][ T402] p9_client_walk+0x1b0/0x650 [ 42.006652][ T402] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 42.006842][ T402] __lookup_slow+0x209/0x3c0 [ 42.007126][ T402] walk_component+0x2ab/0x4f0 [ 42.007316][ T402] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 42.007543][ T402] path_openat+0x1be/0x440 [ 42.007739][ T402] do_filp_open+0x1b3/0x3e0 [ 42.007927][ T402] do_sys_openat2+0x122/0x160 [ 42.008123][ T402] __x64_sys_openat+0x123/0x1e0 [ 42.008311][ T402] do_syscall_64+0xc6/0x1e0 [ 42.008508][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.008736][ T402] IN-SOFTIRQ-R at: [ 42.008866][ T402] __lock_acquire+0x797/0x1570 [ 42.009064][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.009421][ T402] _raw_read_lock_bh+0x44/0x80 [ 42.009614][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 42.009803][ T402] addrconf_rs_timer+0x24a/0x730 [ 42.010074][ T402] call_timer_fn+0x13b/0x230 [ 42.010265][ T402] __run_timers+0x545/0x810 [ 42.010463][ T402] timer_expire_remote+0x9b/0xe0 [ 42.010658][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 42.010849][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 42.011040][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 42.011230][ T402] __do_softirq+0x1f8/0x5df [ 42.011503][ T402] irq_exit_rcu+0x97/0xc0 [ 42.011697][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 42.011924][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 42.012240][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 42.012469][ T402] p9_virtio_request+0x433/0x580 [ 42.012660][ T402] p9_client_rpc+0x2ad/0x930 [ 42.012852][ T402] p9_client_walk+0x1b0/0x650 [ 42.013047][ T402] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 42.013237][ T402] __lookup_slow+0x209/0x3c0 [ 42.013513][ T402] walk_component+0x2ab/0x4f0 [ 42.013704][ T402] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 42.013930][ T402] path_openat+0x1be/0x440 [ 42.014120][ T402] do_filp_open+0x1b3/0x3e0 [ 42.014396][ T402] do_sys_openat2+0x122/0x160 [ 42.014586][ T402] __x64_sys_openat+0x123/0x1e0 [ 42.014774][ T402] do_syscall_64+0xc6/0x1e0 [ 42.015049][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.015279][ T402] INITIAL USE at: [ 42.015397][ T402] __lock_acquire+0x797/0x1570 [ 42.015587][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.015865][ T402] _raw_write_lock_bh+0x38/0x50 [ 42.016061][ T402] addrconf_permanent_addr+0x6e/0x670 [ 42.016251][ T402] addrconf_notify+0x749/0xd60 [ 42.016525][ T402] notifier_call_chain+0xcd/0x150 [ 42.016717][ T402] __dev_notify_flags+0xe6/0x250 [ 42.016908][ T402] dev_change_flags+0xec/0x160 [ 42.017182][ T402] do_setlink+0x7d6/0x21e0 [ 42.017373][ T402] __rtnl_newlink+0xaa7/0xd80 [ 42.017565][ T402] rtnl_newlink+0x63/0xa0 [ 42.017756][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 42.018029][ T402] netlink_rcv_skb+0x130/0x360 [ 42.018232][ T402] netlink_unicast+0x449/0x710 [ 42.018420][ T402] netlink_sendmsg+0x723/0xbe0 [ 42.018694][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 42.018888][ T402] ___sys_sendmsg+0xee/0x170 [ 42.019077][ T402] __sys_sendmsg+0xcd/0x170 [ 42.019268][ T402] do_syscall_64+0xc6/0x1e0 [ 42.019534][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.019755][ T402] INITIAL READ USE at: [ 42.019869][ T402] __lock_acquire+0x797/0x1570 [ 42.020161][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.020350][ T402] _raw_read_lock_bh+0x44/0x80 [ 42.020537][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 42.020759][ T402] inet6_fill_link_af+0x5e/0xe0 [ 42.020946][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 42.021137][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 42.021364][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 42.021669][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 42.021854][ T402] register_netdevice+0x1177/0x1690 [ 42.022077][ T402] register_netdev+0x20/0x40 [ 42.022346][ T402] sit_init_net+0x250/0x4f0 [ 42.022540][ T402] ops_init+0x9b/0x560 [ 42.022728][ T402] register_pernet_operations+0x2db/0x710 [ 42.023035][ T402] register_pernet_device+0x2a/0x60 [ 42.023259][ T402] sit_init+0x23/0xe0 [ 42.023449][ T402] do_one_initcall+0x8d/0x1e0 [ 42.023720][ T402] do_initcalls+0x1b2/0x3e0 [ 42.023913][ T402] kernel_init_freeable+0x232/0x310 [ 42.024136][ T402] kernel_init+0x20/0x200 [ 42.024407][ T402] ret_from_fork+0x31/0x70 [ 42.024599][ T402] ret_from_fork_asm+0x1a/0x30 [ 42.024785][ T402] } [ 42.024863][ T402] ... key at: [] __key.37+0x0/0x40 [ 42.025182][ T402] [ 42.025182][ T402] the dependencies between the lock to be acquired [ 42.025184][ T402] and SOFTIRQ-irq-unsafe lock: [ 42.025589][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 42.025745][ T402] HARDIRQ-ON-W at: [ 42.025862][ T402] __lock_acquire+0x797/0x1570 [ 42.026054][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.026244][ T402] _raw_spin_lock+0x30/0x40 [ 42.026513][ T402] set_mems_allowed+0x1d/0x210 [ 42.026709][ T402] kernel_init_freeable+0x72/0x310 [ 42.026900][ T402] kernel_init+0x20/0x200 [ 42.027092][ T402] ret_from_fork+0x31/0x70 [ 42.027366][ T402] ret_from_fork_asm+0x1a/0x30 [ 42.027556][ T402] SOFTIRQ-ON-W at: [ 42.027671][ T402] __lock_acquire+0x797/0x1570 [ 42.027945][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.028135][ T402] _raw_spin_lock+0x30/0x40 [ 42.028319][ T402] set_mems_allowed+0x1d/0x210 [ 42.028507][ T402] kernel_init_freeable+0x72/0x310 [ 42.028781][ T402] kernel_init+0x20/0x200 [ 42.028983][ T402] ret_from_fork+0x31/0x70 [ 42.029172][ T402] ret_from_fork_asm+0x1a/0x30 [ 42.029450][ T402] INITIAL USE at: [ 42.029564][ T402] __lock_acquire+0x797/0x1570 [ 42.029756][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.029947][ T402] _raw_spin_lock+0x30/0x40 [ 42.030219][ T402] set_mems_allowed+0x1d/0x210 [ 42.030407][ T402] kernel_init_freeable+0x72/0x310 [ 42.030595][ T402] kernel_init+0x20/0x200 [ 42.030870][ T402] ret_from_fork+0x31/0x70 [ 42.031059][ T402] ret_from_fork_asm+0x1a/0x30 [ 42.031245][ T402] } [ 42.031323][ T402] ... key at: [] __key.387+0x0/0x40 [ 42.031629][ T402] ... acquired at: [ 42.031741][ T402] check_prev_add+0x194/0xce0 [ 42.031898][ T402] validate_chain+0x71d/0x9b0 [ 42.032046][ T402] __lock_acquire+0xaf0/0x1570 [ 42.032199][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.032512][ T402] _raw_spin_lock+0x30/0x40 [ 42.032661][ T402] __get_task_comm+0x27/0x70 [ 42.032810][ T402] ref_tracker_alloc+0x2ee/0x490 [ 42.032961][ T402] netdev_get_by_index+0x5e/0x80 [ 42.033193][ T402] fib6_nh_init+0x3d8/0x15b0 [ 42.033344][ T402] ip6_route_info_create+0xf18/0x17d0 [ 42.033491][ T402] addrconf_f6i_alloc+0x265/0x560 [ 42.033647][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 42.033883][ T402] addrconf_join_anycast+0x1c0/0x220 [ 42.034032][ T402] dev_forward_change+0x2a6/0x7b0 [ 42.034185][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 42.034370][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 42.034600][ T402] proc_sys_call_handler+0x403/0x5e0 [ 42.034753][ T402] vfs_write+0x9e5/0x10a0 [ 42.034906][ T402] ksys_write+0xf5/0x1e0 [ 42.035056][ T402] do_syscall_64+0xc6/0x1e0 [ 42.035293][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.035480][ T402] [ 42.035556][ T402] [ 42.035556][ T402] stack backtrace: [ 42.035739][ T402] CPU: 1 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 42.036047][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 42.036386][ T402] Call Trace: [ 42.036499][ T402] [ 42.036576][ T402] dump_stack_lvl+0x82/0xd0 [ 42.036735][ T402] print_bad_irq_dependency+0x957/0xd40 [ 42.036884][ T402] ? hlock_class+0x4e/0x130 [ 42.037035][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 42.037224][ T402] ? __pfx_usage_skip+0x10/0x10 [ 42.037373][ T402] ? __bfs+0x246/0x650 [ 42.037516][ T402] ? __pfx_usage_match+0x10/0x10 [ 42.037691][ T402] check_irq_usage+0x596/0x850 [ 42.037843][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 42.038080][ T402] ? __bfs+0x246/0x650 [ 42.038195][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 42.038348][ T402] ? check_path.constprop.0+0x24/0x50 [ 42.038498][ T402] ? check_noncircular+0x14c/0x3e0 [ 42.038650][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 42.038862][ T402] ? check_prev_add+0x194/0xce0 [ 42.039019][ T402] check_prev_add+0x194/0xce0 [ 42.039170][ T402] ? validate_chain+0x130/0x9b0 [ 42.039324][ T402] validate_chain+0x71d/0x9b0 [ 42.039553][ T402] ? mark_lock+0x38/0x3e0 [ 42.039666][ T402] ? __pfx_validate_chain+0x10/0x10 [ 42.039815][ T402] ? hlock_class+0x4e/0x130 [ 42.039964][ T402] ? mark_lock+0x38/0x3e0 [ 42.040077][ T402] __lock_acquire+0xaf0/0x1570 [ 42.040313][ T402] lock_acquire.part.0+0xeb/0x330 [ 42.040468][ T402] ? __get_task_comm+0x27/0x70 [ 42.040617][ T402] ? mark_lock+0x38/0x3e0 [ 42.040730][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 42.040960][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 42.041111][ T402] ? __get_task_comm+0x27/0x70 [ 42.041258][ T402] ? lock_acquire+0x32/0xc0 [ 42.041410][ T402] ? __get_task_comm+0x27/0x70 [ 42.041561][ T402] _raw_spin_lock+0x30/0x40 [ 42.041802][ T402] ? __get_task_comm+0x27/0x70 [ 42.041951][ T402] __get_task_comm+0x27/0x70 [ 42.042101][ T402] ref_tracker_alloc+0x2ee/0x490 [ 42.042252][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 42.042482][ T402] ? dev_get_by_index+0x177/0x270 [ 42.042633][ T402] ? netdev_get_by_index+0x5e/0x80 [ 42.042783][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 42.042933][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 42.043177][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 42.043325][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 42.043475][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 42.043629][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 42.043859][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 42.044045][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 42.044196][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 42.044349][ T402] ? vfs_write+0x9e5/0x10a0 [ 42.044578][ T402] ? ksys_write+0xf5/0x1e0 [ 42.044731][ T402] ? do_syscall_64+0xc6/0x1e0 [ 42.044878][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.045063][ T402] ? dev_get_by_index+0x177/0x270 [ 42.045297][ T402] netdev_get_by_index+0x5e/0x80 [ 42.045445][ T402] fib6_nh_init+0x3d8/0x15b0 [ 42.045627][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 42.045844][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 42.046087][ T402] ? kasan_save_track+0x14/0x30 [ 42.046238][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 42.046385][ T402] ? __kmalloc+0x1d7/0x3c0 [ 42.046534][ T402] ? fib6_get_table+0x116/0x290 [ 42.046683][ T402] ip6_route_info_create+0xf18/0x17d0 [ 42.046835][ T402] ? __lock_release+0x103/0x460 [ 42.046986][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 42.047170][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 42.047322][ T402] addrconf_f6i_alloc+0x265/0x560 [ 42.047550][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 42.047701][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 42.047852][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 42.048000][ T402] ? lock_acquire+0x32/0xc0 [ 42.048233][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 42.048384][ T402] addrconf_join_anycast+0x1c0/0x220 [ 42.048531][ T402] ? mark_lock+0x38/0x3e0 [ 42.048648][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 42.048929][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 42.049115][ T402] dev_forward_change+0x2a6/0x7b0 [ 42.049264][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 42.049442][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 42.049679][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 42.049828][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 42.050022][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 42.050209][ T402] ? trace_kmalloc+0x2a/0xe0 [ 42.050439][ T402] ? __kmalloc_node+0x220/0x400 [ 42.050590][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 42.050743][ T402] proc_sys_call_handler+0x403/0x5e0 [ 42.050894][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 42.051197][ T402] ? __lock_acquire+0xaf0/0x1570 [ 42.051352][ T402] vfs_write+0x9e5/0x10a0 [ 42.051471][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 42.051623][ T402] ? __pfx_vfs_write+0x10/0x10 [ 42.051774][ T402] ? find_held_lock+0x2c/0x110 [ 42.051928][ T402] ? __pfx___lock_release+0x10/0x10 [ 42.052083][ T402] ? __fget_light+0x53/0x1e0 [ 42.052235][ T402] ksys_write+0xf5/0x1e0 [ 42.052350][ T402] ? __pfx_ksys_write+0x10/0x10 [ 42.052501][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 42.052653][ T402] do_syscall_64+0xc6/0x1e0 [ 42.052802][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 42.052991][ T402] RIP: 0033:0x7f818d596957 [ 42.053235][ 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 [ 42.053765][ T402] RSP: 002b:00007fff9ba1a8f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.054079][ T402] RAX: ffffffffffffffda RBX: 0000556c6a645360 RCX: 00007f818d596957 [ 42.054307][ T402] RDX: 0000000000000002 RSI: 0000556c6a6453a0 RDI: 0000000000000005 [ 42.054612][ T402] RBP: 0000556c6a6474d0 R08: 0000000000000003 R09: 0000000000000077 [ 42.054836][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 42.055060][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f818d64d9c0 [ 42.055458][ T402]