[ 24.635780][ T236] ip (236) used greatest stack depth: 24000 bytes left [ 29.941446][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 31.045956][ T307] gre: GRE over IPv4 demultiplexor driver [ 31.061852][ T307] ip_gre: GRE over IPv4 tunneling driver [ 38.311140][ T373] GACT probability NOT on [ 40.242034][ T389] [ 40.242156][ T389] ===================================================== [ 40.242337][ T389] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.242541][ T389] 6.9.0-rc1-virtme #1 Not tainted [ 40.242680][ T389] ----------------------------------------------------- [ 40.242846][ T389] sysctl/389 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.243058][ T389] ffff88802d122c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.243320][ T389] [ 40.243320][ T389] and this task is already holding: [ 40.243525][ T389] ffff888006203d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.243797][ T389] which would create a new lock dependency: [ 40.243964][ T389] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.244171][ T389] [ 40.244171][ T389] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.244403][ T389] (&ndev->lock){++--}-{2:2} [ 40.244407][ T389] [ 40.244407][ T389] ... which became SOFTIRQ-irq-safe at: [ 40.244745][ T389] __lock_acquire+0x797/0x1570 [ 40.244893][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.245031][ T389] _raw_write_lock+0x30/0x40 [ 40.245174][ T389] addrconf_rs_timer+0xa9/0x730 [ 40.245312][ T389] call_timer_fn+0x13b/0x230 [ 40.245458][ T389] __run_timers+0x545/0x810 [ 40.245594][ T389] run_timer_softirq+0xe8/0x1b0 [ 40.245729][ T389] __do_softirq+0x1f8/0x5df [ 40.245866][ T389] irq_exit_rcu+0x97/0xc0 [ 40.246005][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.246141][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.246310][ T389] default_idle+0xf/0x20 [ 40.246414][ T389] default_idle_call+0x6d/0xb0 [ 40.246552][ T389] cpuidle_idle_call+0x1f4/0x280 [ 40.246695][ T389] do_idle+0xf9/0x160 [ 40.246797][ T389] cpu_startup_entry+0x54/0x60 [ 40.246936][ T389] start_secondary+0x21c/0x2b0 [ 40.247074][ T389] common_startup_64+0x12c/0x138 [ 40.247215][ T389] [ 40.247215][ T389] to a SOFTIRQ-irq-unsafe lock: [ 40.247381][ T389] (&p->alloc_lock){+.+.}-{2:2} [ 40.247385][ T389] [ 40.247385][ T389] ... which became SOFTIRQ-irq-unsafe at: [ 40.247717][ T389] ... [ 40.247718][ T389] __lock_acquire+0x797/0x1570 [ 40.247925][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.248068][ T389] _raw_spin_lock+0x30/0x40 [ 40.248205][ T389] set_mems_allowed+0x1d/0x210 [ 40.248348][ T389] kernel_init_freeable+0x72/0x310 [ 40.248489][ T389] kernel_init+0x20/0x200 [ 40.248626][ T389] ret_from_fork+0x31/0x70 [ 40.248767][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.248905][ T389] [ 40.248905][ T389] other info that might help us debug this: [ 40.248905][ T389] [ 40.249170][ T389] Possible interrupt unsafe locking scenario: [ 40.249170][ T389] [ 40.249387][ T389] CPU0 CPU1 [ 40.249522][ T389] ---- ---- [ 40.249657][ T389] lock(&p->alloc_lock); [ 40.249766][ T389] local_irq_disable(); [ 40.249934][ T389] lock(&ndev->lock); [ 40.250108][ T389] lock(&p->alloc_lock); [ 40.250285][ T389] [ 40.250391][ T389] lock(&ndev->lock); [ 40.250499][ T389] [ 40.250499][ T389] *** DEADLOCK *** [ 40.250499][ T389] [ 40.250701][ T389] 3 locks held by sysctl/389: [ 40.250838][ T389] #0: ffff88802d03c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.251085][ T389] #1: ffffffffa6f969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.251371][ T389] #2: ffff888006203d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.251632][ T389] [ 40.251632][ T389] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.251900][ T389] -> (&ndev->lock){++--}-{2:2} { [ 40.252043][ T389] HARDIRQ-ON-W at: [ 40.252149][ T389] __lock_acquire+0x797/0x1570 [ 40.252325][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.252507][ T389] _raw_write_lock_bh+0x38/0x50 [ 40.252682][ T389] addrconf_permanent_addr+0x6e/0x670 [ 40.252855][ T389] addrconf_notify+0x749/0xd60 [ 40.253028][ T389] notifier_call_chain+0xcd/0x150 [ 40.253203][ T389] __dev_notify_flags+0xe6/0x250 [ 40.253376][ T389] dev_change_flags+0xec/0x160 [ 40.253554][ T389] do_setlink+0x7d6/0x21e0 [ 40.253751][ T389] __rtnl_newlink+0xaa7/0xd80 [ 40.253922][ T389] rtnl_newlink+0x63/0xa0 [ 40.254092][ T389] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.254264][ T389] netlink_rcv_skb+0x130/0x360 [ 40.254440][ T389] netlink_unicast+0x449/0x710 [ 40.254613][ T389] netlink_sendmsg+0x723/0xbe0 [ 40.254784][ T389] ____sys_sendmsg+0x7b2/0xa10 [ 40.254960][ T389] ___sys_sendmsg+0xee/0x170 [ 40.255135][ T389] __sys_sendmsg+0xcd/0x170 [ 40.255309][ T389] do_syscall_64+0xc6/0x1e0 [ 40.255487][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.255696][ T389] HARDIRQ-ON-R at: [ 40.255803][ T389] __lock_acquire+0x797/0x1570 [ 40.255974][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.256150][ T389] _raw_read_lock_bh+0x44/0x80 [ 40.256321][ T389] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.256496][ T389] inet6_fill_link_af+0x5e/0xe0 [ 40.256671][ T389] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.256847][ T389] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.257020][ T389] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.257225][ T389] rtmsg_ifinfo+0x5b/0xa0 [ 40.257400][ T389] register_netdevice+0x1177/0x1690 [ 40.257570][ T389] register_netdev+0x20/0x40 [ 40.257743][ T389] sit_init_net+0x250/0x4f0 [ 40.257921][ T389] ops_init+0x9b/0x560 [ 40.258078][ T389] register_pernet_operations+0x2db/0x710 [ 40.258288][ T389] register_pernet_device+0x2a/0x60 [ 40.258463][ T389] sit_init+0x23/0xe0 [ 40.258605][ T389] do_one_initcall+0x8d/0x1e0 [ 40.258781][ T389] do_initcalls+0x1b2/0x3e0 [ 40.258956][ T389] kernel_init_freeable+0x232/0x310 [ 40.259137][ T389] kernel_init+0x20/0x200 [ 40.259312][ T389] ret_from_fork+0x31/0x70 [ 40.259487][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.259661][ T389] IN-SOFTIRQ-W at: [ 40.259850][ T389] __lock_acquire+0x797/0x1570 [ 40.260023][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.260195][ T389] _raw_write_lock+0x30/0x40 [ 40.260448][ T389] addrconf_rs_timer+0xa9/0x730 [ 40.260620][ T389] call_timer_fn+0x13b/0x230 [ 40.260799][ T389] __run_timers+0x545/0x810 [ 40.260972][ T389] run_timer_softirq+0xe8/0x1b0 [ 40.261240][ T389] __do_softirq+0x1f8/0x5df [ 40.261412][ T389] irq_exit_rcu+0x97/0xc0 [ 40.261587][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.261791][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.261999][ T389] default_idle+0xf/0x20 [ 40.262170][ T389] default_idle_call+0x6d/0xb0 [ 40.262343][ T389] cpuidle_idle_call+0x1f4/0x280 [ 40.262517][ T389] do_idle+0xf9/0x160 [ 40.262653][ T389] cpu_startup_entry+0x54/0x60 [ 40.262826][ T389] start_secondary+0x21c/0x2b0 [ 40.263082][ T389] common_startup_64+0x12c/0x138 [ 40.263256][ T389] IN-SOFTIRQ-R at: [ 40.263358][ T389] __lock_acquire+0x797/0x1570 [ 40.263531][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.263794][ T389] _raw_read_lock_bh+0x44/0x80 [ 40.263971][ T389] ipv6_get_lladdr+0xa9/0x3e0 [ 40.264144][ T389] addrconf_rs_timer+0x24a/0x730 [ 40.264396][ T389] call_timer_fn+0x13b/0x230 [ 40.264568][ T389] __run_timers+0x545/0x810 [ 40.264739][ T389] run_timer_softirq+0xe8/0x1b0 [ 40.264994][ T389] __do_softirq+0x1f8/0x5df [ 40.265166][ T389] irq_exit_rcu+0x97/0xc0 [ 40.265342][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.265547][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.265916][ T389] default_idle+0xf/0x20 [ 40.266084][ T389] default_idle_call+0x6d/0xb0 [ 40.266256][ T389] cpuidle_idle_call+0x1f4/0x280 [ 40.266507][ T389] do_idle+0xf9/0x160 [ 40.266648][ T389] cpu_startup_entry+0x54/0x60 [ 40.266821][ T389] start_secondary+0x21c/0x2b0 [ 40.267073][ T389] common_startup_64+0x12c/0x138 [ 40.267243][ T389] INITIAL USE at: [ 40.267345][ T389] __lock_acquire+0x797/0x1570 [ 40.267515][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.267771][ T389] _raw_write_lock_bh+0x38/0x50 [ 40.267949][ T389] addrconf_permanent_addr+0x6e/0x670 [ 40.268119][ T389] addrconf_notify+0x749/0xd60 [ 40.268290][ T389] notifier_call_chain+0xcd/0x150 [ 40.268544][ T389] __dev_notify_flags+0xe6/0x250 [ 40.268716][ T389] dev_change_flags+0xec/0x160 [ 40.268887][ T389] do_setlink+0x7d6/0x21e0 [ 40.269145][ T389] __rtnl_newlink+0xaa7/0xd80 [ 40.269320][ T389] rtnl_newlink+0x63/0xa0 [ 40.269491][ T389] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.269660][ T389] netlink_rcv_skb+0x130/0x360 [ 40.269831][ T389] netlink_unicast+0x449/0x710 [ 40.270002][ T389] netlink_sendmsg+0x723/0xbe0 [ 40.270174][ T389] ____sys_sendmsg+0x7b2/0xa10 [ 40.270350][ T389] ___sys_sendmsg+0xee/0x170 [ 40.270525][ T389] __sys_sendmsg+0xcd/0x170 [ 40.270698][ T389] do_syscall_64+0xc6/0x1e0 [ 40.270954][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.271160][ T389] INITIAL READ USE at: [ 40.271262][ T389] __lock_acquire+0x797/0x1570 [ 40.271433][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.271691][ T389] _raw_read_lock_bh+0x44/0x80 [ 40.271865][ T389] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.272074][ T389] inet6_fill_link_af+0x5e/0xe0 [ 40.272327][ T389] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.272498][ T389] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.272709][ T389] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.272998][ T389] rtmsg_ifinfo+0x5b/0xa0 [ 40.273170][ T389] register_netdevice+0x1177/0x1690 [ 40.273376][ T389] register_netdev+0x20/0x40 [ 40.273645][ T389] sit_init_net+0x250/0x4f0 [ 40.273824][ T389] ops_init+0x9b/0x560 [ 40.273998][ T389] register_pernet_operations+0x2db/0x710 [ 40.274287][ T389] register_pernet_device+0x2a/0x60 [ 40.274490][ T389] sit_init+0x23/0xe0 [ 40.274663][ T389] do_one_initcall+0x8d/0x1e0 [ 40.274838][ T389] do_initcalls+0x1b2/0x3e0 [ 40.275095][ T389] kernel_init_freeable+0x232/0x310 [ 40.275304][ T389] kernel_init+0x20/0x200 [ 40.275474][ T389] ret_from_fork+0x31/0x70 [ 40.275731][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.275903][ T389] } [ 40.275975][ T389] ... key at: [] __key.37+0x0/0x40 [ 40.276189][ T389] [ 40.276189][ T389] the dependencies between the lock to be acquired [ 40.276190][ T389] and SOFTIRQ-irq-unsafe lock: [ 40.276723][ T389] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.276867][ T389] HARDIRQ-ON-W at: [ 40.277055][ T389] __lock_acquire+0x797/0x1570 [ 40.277240][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.277414][ T389] _raw_spin_lock+0x30/0x40 [ 40.277586][ T389] set_mems_allowed+0x1d/0x210 [ 40.277841][ T389] kernel_init_freeable+0x72/0x310 [ 40.278017][ T389] kernel_init+0x20/0x200 [ 40.278192][ T389] ret_from_fork+0x31/0x70 [ 40.278445][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.278616][ T389] SOFTIRQ-ON-W at: [ 40.278719][ T389] __lock_acquire+0x797/0x1570 [ 40.278892][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.279151][ T389] _raw_spin_lock+0x30/0x40 [ 40.279324][ T389] set_mems_allowed+0x1d/0x210 [ 40.279499][ T389] kernel_init_freeable+0x72/0x310 [ 40.279671][ T389] kernel_init+0x20/0x200 [ 40.279843][ T389] ret_from_fork+0x31/0x70 [ 40.280015][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.280188][ T389] INITIAL USE at: [ 40.280294][ T389] __lock_acquire+0x797/0x1570 [ 40.280466][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.280640][ T389] _raw_spin_lock+0x30/0x40 [ 40.280814][ T389] set_mems_allowed+0x1d/0x210 [ 40.281068][ T389] kernel_init_freeable+0x72/0x310 [ 40.281241][ T389] kernel_init+0x20/0x200 [ 40.281413][ T389] ret_from_fork+0x31/0x70 [ 40.281693][ T389] ret_from_fork_asm+0x1a/0x30 [ 40.281865][ T389] } [ 40.281938][ T389] ... key at: [] __key.387+0x0/0x40 [ 40.282147][ T389] ... acquired at: [ 40.282330][ T389] check_prev_add+0x194/0xce0 [ 40.282471][ T389] validate_chain+0x71d/0x9b0 [ 40.282609][ T389] __lock_acquire+0xaf0/0x1570 [ 40.282745][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.282966][ T389] _raw_spin_lock+0x30/0x40 [ 40.283104][ T389] __get_task_comm+0x27/0x70 [ 40.283249][ T389] ref_tracker_alloc+0x2ee/0x490 [ 40.283388][ T389] netdev_get_by_index+0x5e/0x80 [ 40.283527][ T389] fib6_nh_init+0x3d8/0x15b0 [ 40.283776][ T389] ip6_route_info_create+0xf18/0x17d0 [ 40.283916][ T389] addrconf_f6i_alloc+0x265/0x560 [ 40.284054][ T389] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.284197][ T389] addrconf_join_anycast+0x1c0/0x220 [ 40.284419][ T389] dev_forward_change+0x2a6/0x7b0 [ 40.284555][ T389] addrconf_fixup_forwarding+0x23f/0x460 [ 40.284725][ T389] addrconf_sysctl_forward+0x212/0x2b0 [ 40.284862][ T389] proc_sys_call_handler+0x403/0x5e0 [ 40.285081][ T389] vfs_write+0x9e5/0x10a0 [ 40.285217][ T389] ksys_write+0xf5/0x1e0 [ 40.285360][ T389] do_syscall_64+0xc6/0x1e0 [ 40.285500][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.285754][ T389] [ 40.285826][ T389] [ 40.285826][ T389] stack backtrace: [ 40.285994][ T389] CPU: 0 PID: 389 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.286202][ T389] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.286596][ T389] Call Trace: [ 40.286714][ T389] [ 40.286800][ T389] dump_stack_lvl+0x82/0xd0 [ 40.286943][ T389] print_bad_irq_dependency+0x957/0xd40 [ 40.287257][ T389] ? hlock_class+0x4e/0x130 [ 40.287397][ T389] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.287573][ T389] ? __pfx_usage_skip+0x10/0x10 [ 40.287712][ T389] ? __bfs+0x246/0x650 [ 40.287817][ T389] ? __pfx_usage_match+0x10/0x10 [ 40.287955][ T389] check_irq_usage+0x596/0x850 [ 40.288098][ T389] ? __pfx_check_irq_usage+0x10/0x10 [ 40.288240][ T389] ? __bfs+0x246/0x650 [ 40.288355][ T389] ? __pfx_hlock_conflict+0x10/0x10 [ 40.288509][ T389] ? check_path.constprop.0+0x24/0x50 [ 40.288662][ T389] ? check_noncircular+0x14c/0x3e0 [ 40.288818][ T389] ? __pfx_check_noncircular+0x10/0x10 [ 40.288978][ T389] ? check_prev_add+0x194/0xce0 [ 40.289225][ T389] check_prev_add+0x194/0xce0 [ 40.289383][ T389] ? validate_chain+0x130/0x9b0 [ 40.289542][ T389] validate_chain+0x71d/0x9b0 [ 40.289706][ T389] ? mark_lock+0x38/0x3e0 [ 40.289830][ T389] ? __pfx_validate_chain+0x10/0x10 [ 40.289990][ T389] ? hlock_class+0x4e/0x130 [ 40.290148][ T389] ? mark_lock+0x38/0x3e0 [ 40.290272][ T389] __lock_acquire+0xaf0/0x1570 [ 40.290440][ T389] lock_acquire.part.0+0xeb/0x330 [ 40.290601][ T389] ? __get_task_comm+0x27/0x70 [ 40.290773][ T389] ? mark_lock+0x38/0x3e0 [ 40.290894][ T389] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.291057][ T389] ? trace_lock_acquire+0x135/0x1c0 [ 40.291299][ T389] ? __get_task_comm+0x27/0x70 [ 40.291459][ T389] ? lock_acquire+0x32/0xc0 [ 40.291617][ T389] ? __get_task_comm+0x27/0x70 [ 40.291773][ T389] _raw_spin_lock+0x30/0x40 [ 40.292017][ T389] ? __get_task_comm+0x27/0x70 [ 40.292186][ T389] __get_task_comm+0x27/0x70 [ 40.292347][ T389] ref_tracker_alloc+0x2ee/0x490 [ 40.292510][ T389] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.292679][ T389] ? dev_get_by_index+0x177/0x270 [ 40.292916][ T389] ? netdev_get_by_index+0x5e/0x80 [ 40.293071][ T389] ? fib6_nh_init+0x3d8/0x15b0 [ 40.293227][ T389] ? ip6_route_info_create+0xf18/0x17d0 [ 40.293383][ T389] ? addrconf_f6i_alloc+0x265/0x560 [ 40.293640][ T389] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.293804][ T389] ? addrconf_join_anycast+0x1c0/0x220 [ 40.293960][ T389] ? dev_forward_change+0x2a6/0x7b0 [ 40.294118][ T389] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.294394][ T389] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.294549][ T389] ? proc_sys_call_handler+0x403/0x5e0 [ 40.294704][ T389] ? vfs_write+0x9e5/0x10a0 [ 40.294864][ T389] ? ksys_write+0xf5/0x1e0 [ 40.295105][ T389] ? do_syscall_64+0xc6/0x1e0 [ 40.295261][ T389] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.295457][ T389] ? dev_get_by_index+0x177/0x270 [ 40.295614][ T389] netdev_get_by_index+0x5e/0x80 [ 40.295853][ T389] fib6_nh_init+0x3d8/0x15b0 [ 40.296010][ T389] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.296207][ T389] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.296364][ T389] ? kasan_save_track+0x14/0x30 [ 40.296613][ T389] ? __kasan_kmalloc+0x7f/0x90 [ 40.296770][ T389] ? __kmalloc+0x1d7/0x3c0 [ 40.296929][ T389] ? fib6_get_table+0x116/0x290 [ 40.297087][ T389] ip6_route_info_create+0xf18/0x17d0 [ 40.297326][ T389] ? __lock_release+0x103/0x460 [ 40.297483][ T389] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.297679][ T389] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.297837][ T389] addrconf_f6i_alloc+0x265/0x560 [ 40.298077][ T389] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.298234][ T389] ? do_raw_write_lock+0x122/0x3b0 [ 40.298391][ T389] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.298545][ T389] ? lock_acquire+0x32/0xc0 [ 40.298701][ T389] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.299022][ T389] addrconf_join_anycast+0x1c0/0x220 [ 40.299180][ T389] ? mark_lock+0x38/0x3e0 [ 40.299301][ T389] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.299509][ T389] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.299790][ T389] dev_forward_change+0x2a6/0x7b0 [ 40.299954][ T389] ? __pfx_dev_forward_change+0x10/0x10 [ 40.300117][ T389] addrconf_fixup_forwarding+0x23f/0x460 [ 40.300279][ T389] addrconf_sysctl_forward+0x212/0x2b0 [ 40.300520][ T389] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.300723][ T389] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.300927][ T389] ? trace_kmalloc+0x2a/0xe0 [ 40.301089][ T389] ? __kmalloc_node+0x220/0x400 [ 40.301331][ T389] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.301494][ T389] proc_sys_call_handler+0x403/0x5e0 [ 40.301655][ T389] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.301858][ T389] ? __lock_acquire+0xaf0/0x1570 [ 40.302101][ T389] vfs_write+0x9e5/0x10a0 [ 40.302222][ T389] ? do_user_addr_fault+0x449/0xbe0 [ 40.302385][ T389] ? __pfx_vfs_write+0x10/0x10 [ 40.302547][ T389] ? find_held_lock+0x2c/0x110 [ 40.302788][ T389] ? __pfx___lock_release+0x10/0x10 [ 40.302949][ T389] ? __fget_light+0x53/0x1e0 [ 40.303113][ T389] ksys_write+0xf5/0x1e0 [ 40.303236][ T389] ? __pfx_ksys_write+0x10/0x10 [ 40.303395][ T389] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.303648][ T389] do_syscall_64+0xc6/0x1e0 [ 40.303809][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.304014][ T389] RIP: 0033:0x7feee40d1957 [ 40.304184][ T389] 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 [ 40.304845][ T389] RSP: 002b:00007fff412dc588 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.305182][ T389] RAX: ffffffffffffffda RBX: 000056042ca9c360 RCX: 00007feee40d1957 [ 40.305430][ T389] RDX: 0000000000000002 RSI: 000056042ca9c3a0 RDI: 0000000000000005 [ 40.305669][ T389] RBP: 000056042ca9e4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.305914][ T389] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.306149][ T389] R13: 0000000000000002 R14: 0000000000000002 R15: 00007feee41889c0 [ 40.306387][ T389]