[ 30.357356][ T309] gre: GRE over IPv4 demultiplexor driver [ 30.413538][ T309] ip6_gre: GRE over IPv6 tunneling driver [ 32.488638][ T330] 8021q: 802.1Q VLAN Support v1.8 [ 36.494425][ T368] GACT probability NOT on [ 40.160268][ T401] [ 40.160395][ T401] ===================================================== [ 40.160592][ T401] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.160817][ T401] 6.9.0-rc1-virtme #1 Not tainted [ 40.160972][ T401] ----------------------------------------------------- [ 40.161154][ T401] sysctl/401 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.161377][ T401] ffff888005e9cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.161651][ T401] [ 40.161651][ T401] and this task is already holding: [ 40.161869][ T401] ffff8880074bd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.162134][ T401] which would create a new lock dependency: [ 40.162318][ T401] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.162551][ T401] [ 40.162551][ T401] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.162811][ T401] (&ndev->lock){++--}-{2:2} [ 40.162815][ T401] [ 40.162815][ T401] ... which became SOFTIRQ-irq-safe at: [ 40.163179][ T401] __lock_acquire+0x797/0x1570 [ 40.163333][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.163484][ T401] _raw_write_lock+0x30/0x40 [ 40.163636][ T401] addrconf_rs_timer+0xa9/0x730 [ 40.163791][ T401] call_timer_fn+0x13b/0x230 [ 40.163947][ T401] __run_timers+0x545/0x810 [ 40.164098][ T401] run_timer_softirq+0xe8/0x1b0 [ 40.164245][ T401] __do_softirq+0x1f8/0x5df [ 40.164393][ T401] irq_exit_rcu+0x97/0xc0 [ 40.164542][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.164692][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.164882][ T401] default_idle+0xf/0x20 [ 40.164996][ T401] default_idle_call+0x6d/0xb0 [ 40.165145][ T401] cpuidle_idle_call+0x1f4/0x280 [ 40.165301][ T401] do_idle+0xf9/0x160 [ 40.165417][ T401] cpu_startup_entry+0x54/0x60 [ 40.165567][ T401] rest_init+0x14f/0x260 [ 40.165680][ T401] start_kernel+0x318/0x3d0 [ 40.165833][ T401] x86_64_start_reservations+0x18/0x30 [ 40.165985][ T401] x86_64_start_kernel+0xba/0x110 [ 40.166138][ T401] common_startup_64+0x12c/0x138 [ 40.166288][ T401] [ 40.166288][ T401] to a SOFTIRQ-irq-unsafe lock: [ 40.166477][ T401] (&p->alloc_lock){+.+.}-{2:2} [ 40.166481][ T401] [ 40.166481][ T401] ... which became SOFTIRQ-irq-unsafe at: [ 40.166847][ T401] ... [ 40.166849][ T401] __lock_acquire+0x797/0x1570 [ 40.167076][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.167225][ T401] _raw_spin_lock+0x30/0x40 [ 40.167376][ T401] set_mems_allowed+0x1d/0x210 [ 40.167525][ T401] kernel_init_freeable+0x72/0x310 [ 40.167676][ T401] kernel_init+0x20/0x200 [ 40.167821][ T401] ret_from_fork+0x31/0x70 [ 40.167977][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.168125][ T401] [ 40.168125][ T401] other info that might help us debug this: [ 40.168125][ T401] [ 40.168410][ T401] Possible interrupt unsafe locking scenario: [ 40.168410][ T401] [ 40.168638][ T401] CPU0 CPU1 [ 40.168784][ T401] ---- ---- [ 40.168957][ T401] lock(&p->alloc_lock); [ 40.169074][ T401] local_irq_disable(); [ 40.169261][ T401] lock(&ndev->lock); [ 40.169447][ T401] lock(&p->alloc_lock); [ 40.169634][ T401] [ 40.169746][ T401] lock(&ndev->lock); [ 40.169863][ T401] [ 40.169863][ T401] *** DEADLOCK *** [ 40.169863][ T401] [ 40.170085][ T401] 3 locks held by sysctl/401: [ 40.170235][ T401] #0: ffff888005f5c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.170510][ T401] #1: ffffffffabb969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.170811][ T401] #2: ffff8880074bd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.171079][ T401] [ 40.171079][ T401] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.171376][ T401] -> (&ndev->lock){++--}-{2:2} { [ 40.171532][ T401] HARDIRQ-ON-W at: [ 40.171649][ T401] __lock_acquire+0x797/0x1570 [ 40.171844][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.172029][ T401] _raw_write_lock_bh+0x38/0x50 [ 40.172221][ T401] addrconf_permanent_addr+0x6e/0x670 [ 40.172412][ T401] addrconf_notify+0x749/0xd60 [ 40.172605][ T401] notifier_call_chain+0xcd/0x150 [ 40.172795][ T401] __dev_notify_flags+0xe6/0x250 [ 40.172985][ T401] dev_change_flags+0xec/0x160 [ 40.173178][ T401] do_setlink+0x7d6/0x21e0 [ 40.173371][ T401] __rtnl_newlink+0xaa7/0xd80 [ 40.173567][ T401] rtnl_newlink+0x63/0xa0 [ 40.173756][ T401] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.173945][ T401] netlink_rcv_skb+0x130/0x360 [ 40.174137][ T401] netlink_unicast+0x449/0x710 [ 40.174325][ T401] netlink_sendmsg+0x723/0xbe0 [ 40.174516][ T401] ____sys_sendmsg+0x7b2/0xa10 [ 40.174707][ T401] ___sys_sendmsg+0xee/0x170 [ 40.174901][ T401] __sys_sendmsg+0xcd/0x170 [ 40.175092][ T401] do_syscall_64+0xc6/0x1e0 [ 40.175282][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.175506][ T401] HARDIRQ-ON-R at: [ 40.175619][ T401] __lock_acquire+0x797/0x1570 [ 40.175809][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.175999][ T401] _raw_read_lock_bh+0x44/0x80 [ 40.176189][ T401] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.176378][ T401] inet6_fill_link_af+0x5e/0xe0 [ 40.176561][ T401] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.176746][ T401] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.176931][ T401] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.177159][ T401] rtmsg_ifinfo+0x5b/0xa0 [ 40.177347][ T401] register_netdevice+0x1177/0x1690 [ 40.177531][ T401] register_netdev+0x20/0x40 [ 40.177716][ T401] sit_init_net+0x250/0x4f0 [ 40.177907][ T401] ops_init+0x9b/0x560 [ 40.178060][ T401] register_pernet_operations+0x2db/0x710 [ 40.178285][ T401] register_pernet_device+0x2a/0x60 [ 40.178475][ T401] sit_init+0x23/0xe0 [ 40.178627][ T401] do_one_initcall+0x8d/0x1e0 [ 40.178821][ T401] do_initcalls+0x1b2/0x3e0 [ 40.179026][ T401] kernel_init_freeable+0x232/0x310 [ 40.179212][ T401] kernel_init+0x20/0x200 [ 40.179399][ T401] ret_from_fork+0x31/0x70 [ 40.179596][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.179782][ T401] IN-SOFTIRQ-W at: [ 40.179896][ T401] __lock_acquire+0x797/0x1570 [ 40.180081][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.180269][ T401] _raw_write_lock+0x30/0x40 [ 40.180456][ T401] addrconf_rs_timer+0xa9/0x730 [ 40.180641][ T401] call_timer_fn+0x13b/0x230 [ 40.180836][ T401] __run_timers+0x545/0x810 [ 40.181024][ T401] run_timer_softirq+0xe8/0x1b0 [ 40.181211][ T401] __do_softirq+0x1f8/0x5df [ 40.181398][ T401] irq_exit_rcu+0x97/0xc0 [ 40.181590][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.181814][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.182046][ T401] default_idle+0xf/0x20 [ 40.182238][ T401] default_idle_call+0x6d/0xb0 [ 40.182422][ T401] cpuidle_idle_call+0x1f4/0x280 [ 40.182601][ T401] do_idle+0xf9/0x160 [ 40.182741][ T401] cpu_startup_entry+0x54/0x60 [ 40.182918][ T401] rest_init+0x14f/0x260 [ 40.183090][ T401] start_kernel+0x318/0x3d0 [ 40.183267][ T401] x86_64_start_reservations+0x18/0x30 [ 40.183444][ T401] x86_64_start_kernel+0xba/0x110 [ 40.183622][ T401] common_startup_64+0x12c/0x138 [ 40.183795][ T401] IN-SOFTIRQ-R at: [ 40.183899][ T401] __lock_acquire+0x797/0x1570 [ 40.184074][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.184250][ T401] _raw_read_lock_bh+0x44/0x80 [ 40.184423][ T401] ipv6_get_lladdr+0xa9/0x3e0 [ 40.184599][ T401] addrconf_rs_timer+0x24a/0x730 [ 40.184773][ T401] call_timer_fn+0x13b/0x230 [ 40.184954][ T401] __run_timers+0x545/0x810 [ 40.185129][ T401] run_timer_softirq+0xe8/0x1b0 [ 40.185303][ T401] __do_softirq+0x1f8/0x5df [ 40.185481][ T401] irq_exit_rcu+0x97/0xc0 [ 40.185653][ T401] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.185864][ T401] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.186090][ T401] default_idle+0xf/0x20 [ 40.186266][ T401] default_idle_call+0x6d/0xb0 [ 40.186536][ T401] cpuidle_idle_call+0x1f4/0x280 [ 40.186715][ T401] do_idle+0xf9/0x160 [ 40.186859][ T401] cpu_startup_entry+0x54/0x60 [ 40.187032][ T401] rest_init+0x14f/0x260 [ 40.187286][ T401] start_kernel+0x318/0x3d0 [ 40.187459][ T401] x86_64_start_reservations+0x18/0x30 [ 40.187632][ T401] x86_64_start_kernel+0xba/0x110 [ 40.187890][ T401] common_startup_64+0x12c/0x138 [ 40.188067][ T401] INITIAL USE at: [ 40.188173][ T401] __lock_acquire+0x797/0x1570 [ 40.188347][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.188600][ T401] _raw_write_lock_bh+0x38/0x50 [ 40.188771][ T401] addrconf_permanent_addr+0x6e/0x670 [ 40.188957][ T401] addrconf_notify+0x749/0xd60 [ 40.189221][ T401] notifier_call_chain+0xcd/0x150 [ 40.189395][ T401] __dev_notify_flags+0xe6/0x250 [ 40.189567][ T401] dev_change_flags+0xec/0x160 [ 40.189738][ T401] do_setlink+0x7d6/0x21e0 [ 40.189993][ T401] __rtnl_newlink+0xaa7/0xd80 [ 40.190164][ T401] rtnl_newlink+0x63/0xa0 [ 40.190337][ T401] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.190674][ T401] netlink_rcv_skb+0x130/0x360 [ 40.190850][ T401] netlink_unicast+0x449/0x710 [ 40.191026][ T401] netlink_sendmsg+0x723/0xbe0 [ 40.191278][ T401] ____sys_sendmsg+0x7b2/0xa10 [ 40.191448][ T401] ___sys_sendmsg+0xee/0x170 [ 40.191622][ T401] __sys_sendmsg+0xcd/0x170 [ 40.191796][ T401] do_syscall_64+0xc6/0x1e0 [ 40.192055][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.192260][ T401] INITIAL READ USE at: [ 40.192365][ T401] __lock_acquire+0x797/0x1570 [ 40.192619][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.192791][ T401] _raw_read_lock_bh+0x44/0x80 [ 40.192967][ T401] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.193178][ T401] inet6_fill_link_af+0x5e/0xe0 [ 40.193432][ T401] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.193605][ T401] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.193811][ T401] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.194105][ T401] rtmsg_ifinfo+0x5b/0xa0 [ 40.194278][ T401] register_netdevice+0x1177/0x1690 [ 40.194481][ T401] register_netdev+0x20/0x40 [ 40.194738][ T401] sit_init_net+0x250/0x4f0 [ 40.194915][ T401] ops_init+0x9b/0x560 [ 40.195085][ T401] register_pernet_operations+0x2db/0x710 [ 40.195372][ T401] register_pernet_device+0x2a/0x60 [ 40.195581][ T401] sit_init+0x23/0xe0 [ 40.195755][ T401] do_one_initcall+0x8d/0x1e0 [ 40.196012][ T401] do_initcalls+0x1b2/0x3e0 [ 40.196184][ T401] kernel_init_freeable+0x232/0x310 [ 40.196396][ T401] kernel_init+0x20/0x200 [ 40.196650][ T401] ret_from_fork+0x31/0x70 [ 40.196828][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.197000][ T401] } [ 40.197073][ T401] ... key at: [] __key.37+0x0/0x40 [ 40.197368][ T401] [ 40.197368][ T401] the dependencies between the lock to be acquired [ 40.197369][ T401] and SOFTIRQ-irq-unsafe lock: [ 40.197739][ T401] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.197889][ T401] HARDIRQ-ON-W at: [ 40.198084][ T401] __lock_acquire+0x797/0x1570 [ 40.198256][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.198427][ T401] _raw_spin_lock+0x30/0x40 [ 40.198678][ T401] set_mems_allowed+0x1d/0x210 [ 40.198851][ T401] kernel_init_freeable+0x72/0x310 [ 40.199044][ T401] kernel_init+0x20/0x200 [ 40.199218][ T401] ret_from_fork+0x31/0x70 [ 40.199395][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.199570][ T401] SOFTIRQ-ON-W at: [ 40.199673][ T401] __lock_acquire+0x797/0x1570 [ 40.199847][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.200101][ T401] _raw_spin_lock+0x30/0x40 [ 40.200273][ T401] set_mems_allowed+0x1d/0x210 [ 40.200448][ T401] kernel_init_freeable+0x72/0x310 [ 40.200704][ T401] kernel_init+0x20/0x200 [ 40.200877][ T401] ret_from_fork+0x31/0x70 [ 40.201050][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.201384][ T401] INITIAL USE at: [ 40.201487][ T401] __lock_acquire+0x797/0x1570 [ 40.201659][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.201831][ T401] _raw_spin_lock+0x30/0x40 [ 40.202087][ T401] set_mems_allowed+0x1d/0x210 [ 40.202260][ T401] kernel_init_freeable+0x72/0x310 [ 40.202432][ T401] kernel_init+0x20/0x200 [ 40.202605][ T401] ret_from_fork+0x31/0x70 [ 40.202870][ T401] ret_from_fork_asm+0x1a/0x30 [ 40.203041][ T401] } [ 40.203113][ T401] ... key at: [] __key.387+0x0/0x40 [ 40.203326][ T401] ... acquired at: [ 40.203429][ T401] check_prev_add+0x194/0xce0 [ 40.203569][ T401] validate_chain+0x71d/0x9b0 [ 40.203705][ T401] __lock_acquire+0xaf0/0x1570 [ 40.203842][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.204062][ T401] _raw_spin_lock+0x30/0x40 [ 40.204202][ T401] __get_task_comm+0x27/0x70 [ 40.204338][ T401] ref_tracker_alloc+0x2ee/0x490 [ 40.204479][ T401] netdev_get_by_index+0x5e/0x80 [ 40.204696][ T401] fib6_nh_init+0x3d8/0x15b0 [ 40.204833][ T401] ip6_route_info_create+0xf18/0x17d0 [ 40.204969][ T401] addrconf_f6i_alloc+0x265/0x560 [ 40.205105][ T401] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.205245][ T401] addrconf_join_anycast+0x1c0/0x220 [ 40.205384][ T401] dev_forward_change+0x2a6/0x7b0 [ 40.205525][ T401] addrconf_fixup_forwarding+0x23f/0x460 [ 40.205699][ T401] addrconf_sysctl_forward+0x212/0x2b0 [ 40.205916][ T401] proc_sys_call_handler+0x403/0x5e0 [ 40.206056][ T401] vfs_write+0x9e5/0x10a0 [ 40.206198][ T401] ksys_write+0xf5/0x1e0 [ 40.206335][ T401] do_syscall_64+0xc6/0x1e0 [ 40.206474][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.206728][ T401] [ 40.206798][ T401] [ 40.206798][ T401] stack backtrace: [ 40.206971][ T401] CPU: 0 PID: 401 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.207263][ T401] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.207571][ T401] Call Trace: [ 40.207676][ T401] [ 40.207747][ T401] dump_stack_lvl+0x82/0xd0 [ 40.207972][ T401] print_bad_irq_dependency+0x957/0xd40 [ 40.208113][ T401] ? hlock_class+0x4e/0x130 [ 40.208253][ T401] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.208425][ T401] ? __pfx_usage_skip+0x10/0x10 [ 40.208643][ T401] ? __bfs+0x246/0x650 [ 40.208747][ T401] ? __pfx_usage_match+0x10/0x10 [ 40.208886][ T401] check_irq_usage+0x596/0x850 [ 40.209041][ T401] ? __pfx_check_irq_usage+0x10/0x10 [ 40.209181][ T401] ? __bfs+0x246/0x650 [ 40.209366][ T401] ? __pfx_hlock_conflict+0x10/0x10 [ 40.209508][ T401] ? check_path.constprop.0+0x24/0x50 [ 40.209649][ T401] ? check_noncircular+0x14c/0x3e0 [ 40.209787][ T401] ? __pfx_check_noncircular+0x10/0x10 [ 40.210008][ T401] ? check_prev_add+0x194/0xce0 [ 40.210147][ T401] check_prev_add+0x194/0xce0 [ 40.210284][ T401] ? validate_chain+0x130/0x9b0 [ 40.210421][ T401] validate_chain+0x71d/0x9b0 [ 40.210638][ T401] ? mark_lock+0x38/0x3e0 [ 40.210743][ T401] ? __pfx_validate_chain+0x10/0x10 [ 40.210880][ T401] ? hlock_class+0x4e/0x130 [ 40.211018][ T401] ? mark_lock+0x38/0x3e0 [ 40.211123][ T401] __lock_acquire+0xaf0/0x1570 [ 40.211342][ T401] lock_acquire.part.0+0xeb/0x330 [ 40.211478][ T401] ? __get_task_comm+0x27/0x70 [ 40.211616][ T401] ? mark_lock+0x38/0x3e0 [ 40.211720][ T401] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.211862][ T401] ? trace_lock_acquire+0x135/0x1c0 [ 40.212165][ T401] ? __get_task_comm+0x27/0x70 [ 40.212304][ T401] ? lock_acquire+0x32/0xc0 [ 40.212443][ T401] ? __get_task_comm+0x27/0x70 [ 40.212579][ T401] _raw_spin_lock+0x30/0x40 [ 40.212804][ T401] ? __get_task_comm+0x27/0x70 [ 40.212941][ T401] __get_task_comm+0x27/0x70 [ 40.213076][ T401] ref_tracker_alloc+0x2ee/0x490 [ 40.213213][ T401] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.213355][ T401] ? dev_get_by_index+0x177/0x270 [ 40.213493][ T401] ? netdev_get_by_index+0x5e/0x80 [ 40.213629][ T401] ? fib6_nh_init+0x3d8/0x15b0 [ 40.213765][ T401] ? ip6_route_info_create+0xf18/0x17d0 [ 40.213984][ T401] ? addrconf_f6i_alloc+0x265/0x560 [ 40.214121][ T401] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.214257][ T401] ? addrconf_join_anycast+0x1c0/0x220 [ 40.214395][ T401] ? dev_forward_change+0x2a6/0x7b0 [ 40.214533][ T401] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.214780][ T401] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.214917][ T401] ? proc_sys_call_handler+0x403/0x5e0 [ 40.215056][ T401] ? vfs_write+0x9e5/0x10a0 [ 40.215194][ T401] ? ksys_write+0xf5/0x1e0 [ 40.215415][ T401] ? do_syscall_64+0xc6/0x1e0 [ 40.215553][ T401] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.215725][ T401] ? dev_get_by_index+0x177/0x270 [ 40.215874][ T401] netdev_get_by_index+0x5e/0x80 [ 40.216094][ T401] fib6_nh_init+0x3d8/0x15b0 [ 40.216232][ T401] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.216405][ T401] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.216545][ T401] ? kasan_save_track+0x14/0x30 [ 40.216765][ T401] ? __kasan_kmalloc+0x7f/0x90 [ 40.216904][ T401] ? __kmalloc+0x1d7/0x3c0 [ 40.217044][ T401] ? fib6_get_table+0x116/0x290 [ 40.217184][ T401] ip6_route_info_create+0xf18/0x17d0 [ 40.217322][ T401] ? __lock_release+0x103/0x460 [ 40.217465][ T401] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.217635][ T401] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.217773][ T401] addrconf_f6i_alloc+0x265/0x560 [ 40.217991][ T401] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.218130][ T401] ? do_raw_write_lock+0x122/0x3b0 [ 40.218267][ T401] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.218410][ T401] ? lock_acquire+0x32/0xc0 [ 40.218629][ T401] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.218766][ T401] addrconf_join_anycast+0x1c0/0x220 [ 40.218904][ T401] ? mark_lock+0x38/0x3e0 [ 40.219023][ T401] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.219276][ T401] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.219450][ T401] dev_forward_change+0x2a6/0x7b0 [ 40.219588][ T401] ? __pfx_dev_forward_change+0x10/0x10 [ 40.219736][ T401] addrconf_fixup_forwarding+0x23f/0x460 [ 40.219962][ T401] addrconf_sysctl_forward+0x212/0x2b0 [ 40.220100][ T401] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.220272][ T401] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.220442][ T401] ? trace_kmalloc+0x2a/0xe0 [ 40.220665][ T401] ? __kmalloc_node+0x220/0x400 [ 40.220803][ T401] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.220945][ T401] proc_sys_call_handler+0x403/0x5e0 [ 40.221083][ T401] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.221332][ T401] ? __lock_acquire+0xaf0/0x1570 [ 40.221473][ T401] vfs_write+0x9e5/0x10a0 [ 40.221578][ T401] ? do_user_addr_fault+0x449/0xbe0 [ 40.221716][ T401] ? __pfx_vfs_write+0x10/0x10 [ 40.221855][ T401] ? find_held_lock+0x2c/0x110 [ 40.222076][ T401] ? __pfx___lock_release+0x10/0x10 [ 40.222220][ T401] ? __fget_light+0x53/0x1e0 [ 40.222358][ T401] ksys_write+0xf5/0x1e0 [ 40.222463][ T401] ? __pfx_ksys_write+0x10/0x10 [ 40.222769][ T401] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.222907][ T401] do_syscall_64+0xc6/0x1e0 [ 40.223044][ T401] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.223214][ T401] RIP: 0033:0x7f61c1b0b957 [ 40.223361][ T401] 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 [ 40.223846][ T401] RSP: 002b:00007ffe63c03be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.224138][ T401] RAX: ffffffffffffffda RBX: 000056381e14b360 RCX: 00007f61c1b0b957 [ 40.224346][ T401] RDX: 0000000000000002 RSI: 000056381e14b3a0 RDI: 0000000000000005 [ 40.224556][ T401] RBP: 000056381e14d4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.224848][ T401] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.225054][ T401] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f61c1bc29c0 [ 40.225265][ T401]