[ 30.074574][ T265] ip (265) used greatest stack depth: 23200 bytes left [ 35.177527][ T310] gre: GRE over IPv4 demultiplexor driver [ 35.199223][ T310] ip_gre: GRE over IPv4 tunneling driver [ 37.449394][ T332] 8021q: 802.1Q VLAN Support v1.8 [ 41.776536][ T370] GACT probability NOT on [ 45.727435][ T403] [ 45.727559][ T403] ===================================================== [ 45.727754][ T403] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 45.728077][ T403] 6.9.0-rc1-virtme #1 Not tainted [ 45.728244][ T403] ----------------------------------------------------- [ 45.728465][ T403] sysctl/403 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 45.728704][ T403] ffff8880074c0968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 45.729032][ T403] [ 45.729032][ T403] and this task is already holding: [ 45.729276][ T403] ffff888005c15580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.729556][ T403] which would create a new lock dependency: [ 45.729751][ T403] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 45.730017][ T403] [ 45.730017][ T403] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 45.730304][ T403] (&ndev->lock){++--}-{2:2} [ 45.730309][ T403] [ 45.730309][ T403] ... which became SOFTIRQ-irq-safe at: [ 45.730697][ T403] __lock_acquire+0x797/0x1570 [ 45.730889][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.731064][ T403] _raw_write_lock+0x30/0x40 [ 45.731224][ T403] addrconf_rs_timer+0xa9/0x730 [ 45.731416][ T403] call_timer_fn+0x13b/0x230 [ 45.731555][ T403] __run_timers+0x545/0x810 [ 45.731708][ T403] run_timer_softirq+0xe8/0x1b0 [ 45.731845][ T403] __do_softirq+0x1f8/0x5df [ 45.732016][ T403] irq_exit_rcu+0x97/0xc0 [ 45.732173][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.732349][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.732528][ T403] default_idle+0xf/0x20 [ 45.732643][ T403] default_idle_call+0x6d/0xb0 [ 45.732804][ T403] cpuidle_idle_call+0x1f4/0x280 [ 45.732941][ T403] do_idle+0xf9/0x160 [ 45.733064][ T403] cpu_startup_entry+0x54/0x60 [ 45.733205][ T403] start_secondary+0x21c/0x2b0 [ 45.733358][ T403] common_startup_64+0x12c/0x138 [ 45.733516][ T403] [ 45.733516][ T403] to a SOFTIRQ-irq-unsafe lock: [ 45.733684][ T403] (&p->alloc_lock){+.+.}-{2:2} [ 45.733689][ T403] [ 45.733689][ T403] ... which became SOFTIRQ-irq-unsafe at: [ 45.734063][ T403] ... [ 45.734064][ T403] __lock_acquire+0x797/0x1570 [ 45.734298][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.734460][ T403] _raw_spin_lock+0x30/0x40 [ 45.734622][ T403] set_mems_allowed+0x1d/0x210 [ 45.734795][ T403] kernel_init_freeable+0x72/0x310 [ 45.734961][ T403] kernel_init+0x20/0x200 [ 45.735139][ T403] ret_from_fork+0x31/0x70 [ 45.735323][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.735480][ T403] [ 45.735480][ T403] other info that might help us debug this: [ 45.735480][ T403] [ 45.735803][ T403] Possible interrupt unsafe locking scenario: [ 45.735803][ T403] [ 45.736024][ T403] CPU0 CPU1 [ 45.736162][ T403] ---- ---- [ 45.736325][ T403] lock(&p->alloc_lock); [ 45.736443][ T403] local_irq_disable(); [ 45.736628][ T403] lock(&ndev->lock); [ 45.736824][ T403] lock(&p->alloc_lock); [ 45.737016][ T403] [ 45.737132][ T403] lock(&ndev->lock); [ 45.737251][ T403] [ 45.737251][ T403] *** DEADLOCK *** [ 45.737251][ T403] [ 45.737490][ T403] 3 locks held by sysctl/403: [ 45.737650][ T403] #0: ffff888029d9c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 45.737942][ T403] #1: ffffffffa03969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 45.738265][ T403] #2: ffff888005c15580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.738542][ T403] [ 45.738542][ T403] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 45.738876][ T403] -> (&ndev->lock){++--}-{2:2} { [ 45.739043][ T403] HARDIRQ-ON-W at: [ 45.739163][ T403] __lock_acquire+0x797/0x1570 [ 45.739366][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.739566][ T403] _raw_write_lock_bh+0x38/0x50 [ 45.739764][ T403] addrconf_permanent_addr+0x6e/0x670 [ 45.739964][ T403] addrconf_notify+0x749/0xd60 [ 45.740162][ T403] notifier_call_chain+0xcd/0x150 [ 45.740365][ T403] __dev_notify_flags+0xe6/0x250 [ 45.740564][ T403] dev_change_flags+0xec/0x160 [ 45.740762][ T403] do_setlink+0x7d6/0x21e0 [ 45.740963][ T403] __rtnl_newlink+0xaa7/0xd80 [ 45.741156][ T403] rtnl_newlink+0x63/0xa0 [ 45.741379][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.741571][ T403] netlink_rcv_skb+0x130/0x360 [ 45.741746][ T403] netlink_unicast+0x449/0x710 [ 45.741961][ T403] netlink_sendmsg+0x723/0xbe0 [ 45.742170][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 45.742351][ T403] ___sys_sendmsg+0xee/0x170 [ 45.742553][ T403] __sys_sendmsg+0xcd/0x170 [ 45.742741][ T403] do_syscall_64+0xc6/0x1e0 [ 45.742937][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.743167][ T403] HARDIRQ-ON-R at: [ 45.743274][ T403] __lock_acquire+0x797/0x1570 [ 45.743491][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.743710][ T403] _raw_read_lock_bh+0x44/0x80 [ 45.743916][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.744123][ T403] inet6_fill_link_af+0x5e/0xe0 [ 45.744341][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.744579][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.744775][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.745011][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 45.745211][ T403] register_netdevice+0x1177/0x1690 [ 45.745407][ T403] register_netdev+0x20/0x40 [ 45.745607][ T403] sit_init_net+0x250/0x4f0 [ 45.745803][ T403] ops_init+0x9b/0x560 [ 45.745962][ T403] register_pernet_operations+0x2db/0x710 [ 45.746200][ T403] register_pernet_device+0x2a/0x60 [ 45.746405][ T403] sit_init+0x23/0xe0 [ 45.746562][ T403] do_one_initcall+0x8d/0x1e0 [ 45.746768][ T403] do_initcalls+0x1b2/0x3e0 [ 45.746970][ T403] kernel_init_freeable+0x232/0x310 [ 45.747167][ T403] kernel_init+0x20/0x200 [ 45.747366][ T403] ret_from_fork+0x31/0x70 [ 45.747564][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.747769][ T403] IN-SOFTIRQ-W at: [ 45.747890][ T403] __lock_acquire+0x797/0x1570 [ 45.748083][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.748292][ T403] _raw_write_lock+0x30/0x40 [ 45.748492][ T403] addrconf_rs_timer+0xa9/0x730 [ 45.748689][ T403] call_timer_fn+0x13b/0x230 [ 45.749091][ T403] __run_timers+0x545/0x810 [ 45.749292][ T403] run_timer_softirq+0xe8/0x1b0 [ 45.749502][ T403] __do_softirq+0x1f8/0x5df [ 45.749699][ T403] irq_exit_rcu+0x97/0xc0 [ 45.749898][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.750138][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.750386][ T403] default_idle+0xf/0x20 [ 45.750594][ T403] default_idle_call+0x6d/0xb0 [ 45.750782][ T403] cpuidle_idle_call+0x1f4/0x280 [ 45.750962][ T403] do_idle+0xf9/0x160 [ 45.751107][ T403] cpu_startup_entry+0x54/0x60 [ 45.751282][ T403] start_secondary+0x21c/0x2b0 [ 45.751462][ T403] common_startup_64+0x12c/0x138 [ 45.751657][ T403] IN-SOFTIRQ-R at: [ 45.751780][ T403] __lock_acquire+0x797/0x1570 [ 45.751977][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.752150][ T403] _raw_read_lock_bh+0x44/0x80 [ 45.752338][ T403] ipv6_get_lladdr+0xa9/0x3e0 [ 45.752537][ T403] addrconf_rs_timer+0x24a/0x730 [ 45.752709][ T403] call_timer_fn+0x13b/0x230 [ 45.752904][ T403] __run_timers+0x545/0x810 [ 45.753077][ T403] run_timer_softirq+0xe8/0x1b0 [ 45.753272][ T403] __do_softirq+0x1f8/0x5df [ 45.753466][ T403] irq_exit_rcu+0x97/0xc0 [ 45.753672][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.753922][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.754174][ T403] default_idle+0xf/0x20 [ 45.754379][ T403] default_idle_call+0x6d/0xb0 [ 45.754584][ T403] cpuidle_idle_call+0x1f4/0x280 [ 45.754793][ T403] do_idle+0xf9/0x160 [ 45.754968][ T403] cpu_startup_entry+0x54/0x60 [ 45.755184][ T403] start_secondary+0x21c/0x2b0 [ 45.755388][ T403] common_startup_64+0x12c/0x138 [ 45.755578][ T403] INITIAL USE at: [ 45.755706][ T403] __lock_acquire+0x797/0x1570 [ 45.755929][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.756169][ T403] _raw_write_lock_bh+0x38/0x50 [ 45.756399][ T403] addrconf_permanent_addr+0x6e/0x670 [ 45.756600][ T403] addrconf_notify+0x749/0xd60 [ 45.756909][ T403] notifier_call_chain+0xcd/0x150 [ 45.757134][ T403] __dev_notify_flags+0xe6/0x250 [ 45.757336][ T403] dev_change_flags+0xec/0x160 [ 45.757615][ T403] do_setlink+0x7d6/0x21e0 [ 45.757808][ T403] __rtnl_newlink+0xaa7/0xd80 [ 45.758004][ T403] rtnl_newlink+0x63/0xa0 [ 45.758196][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.758512][ T403] netlink_rcv_skb+0x130/0x360 [ 45.758733][ T403] netlink_unicast+0x449/0x710 [ 45.758979][ T403] netlink_sendmsg+0x723/0xbe0 [ 45.759285][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 45.759485][ T403] ___sys_sendmsg+0xee/0x170 [ 45.759701][ T403] __sys_sendmsg+0xcd/0x170 [ 45.759904][ T403] do_syscall_64+0xc6/0x1e0 [ 45.760317][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.760567][ T403] INITIAL READ USE at: [ 45.760699][ T403] __lock_acquire+0x797/0x1570 [ 45.760997][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.761201][ T403] _raw_read_lock_bh+0x44/0x80 [ 45.761383][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.761724][ T403] inet6_fill_link_af+0x5e/0xe0 [ 45.761908][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.762084][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.762289][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.762492][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 45.762662][ T403] register_netdevice+0x1177/0x1690 [ 45.762875][ T403] register_netdev+0x20/0x40 [ 45.763064][ T403] sit_init_net+0x250/0x4f0 [ 45.763260][ T403] ops_init+0x9b/0x560 [ 45.763452][ T403] register_pernet_operations+0x2db/0x710 [ 45.763772][ T403] register_pernet_device+0x2a/0x60 [ 45.764000][ T403] sit_init+0x23/0xe0 [ 45.764199][ T403] do_one_initcall+0x8d/0x1e0 [ 45.764399][ T403] do_initcalls+0x1b2/0x3e0 [ 45.764596][ T403] kernel_init_freeable+0x232/0x310 [ 45.764832][ T403] kernel_init+0x20/0x200 [ 45.765027][ T403] ret_from_fork+0x31/0x70 [ 45.765226][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.765429][ T403] } [ 45.765512][ T403] ... key at: [] __key.37+0x0/0x40 [ 45.765834][ T403] [ 45.765834][ T403] the dependencies between the lock to be acquired [ 45.765835][ T403] and SOFTIRQ-irq-unsafe lock: [ 45.766250][ T403] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.766422][ T403] HARDIRQ-ON-W at: [ 45.766543][ T403] __lock_acquire+0x797/0x1570 [ 45.766753][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.766945][ T403] _raw_spin_lock+0x30/0x40 [ 45.767225][ T403] set_mems_allowed+0x1d/0x210 [ 45.767419][ T403] kernel_init_freeable+0x72/0x310 [ 45.767613][ T403] kernel_init+0x20/0x200 [ 45.767807][ T403] ret_from_fork+0x31/0x70 [ 45.768085][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.768289][ T403] SOFTIRQ-ON-W at: [ 45.768404][ T403] __lock_acquire+0x797/0x1570 [ 45.768695][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.768899][ T403] _raw_spin_lock+0x30/0x40 [ 45.769094][ T403] set_mems_allowed+0x1d/0x210 [ 45.769287][ T403] kernel_init_freeable+0x72/0x310 [ 45.769486][ T403] kernel_init+0x20/0x200 [ 45.769677][ T403] ret_from_fork+0x31/0x70 [ 45.769866][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.770059][ T403] INITIAL USE at: [ 45.770174][ T403] __lock_acquire+0x797/0x1570 [ 45.770365][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.770561][ T403] _raw_spin_lock+0x30/0x40 [ 45.770842][ T403] set_mems_allowed+0x1d/0x210 [ 45.771018][ T403] kernel_init_freeable+0x72/0x310 [ 45.771190][ T403] kernel_init+0x20/0x200 [ 45.771530][ T403] ret_from_fork+0x31/0x70 [ 45.771702][ T403] ret_from_fork_asm+0x1a/0x30 [ 45.771875][ T403] } [ 45.771958][ T403] ... key at: [] __key.387+0x0/0x40 [ 45.772292][ T403] ... acquired at: [ 45.772409][ T403] check_prev_add+0x194/0xce0 [ 45.772557][ T403] validate_chain+0x71d/0x9b0 [ 45.772695][ T403] __lock_acquire+0xaf0/0x1570 [ 45.772833][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.773052][ T403] _raw_spin_lock+0x30/0x40 [ 45.773189][ T403] __get_task_comm+0x27/0x70 [ 45.773327][ T403] ref_tracker_alloc+0x2ee/0x490 [ 45.773483][ T403] netdev_get_by_index+0x5e/0x80 [ 45.773733][ T403] fib6_nh_init+0x3d8/0x15b0 [ 45.773899][ T403] ip6_route_info_create+0xf18/0x17d0 [ 45.774057][ T403] addrconf_f6i_alloc+0x265/0x560 [ 45.774211][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.774369][ T403] addrconf_join_anycast+0x1c0/0x220 [ 45.774518][ T403] dev_forward_change+0x2a6/0x7b0 [ 45.774669][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 45.774869][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 45.775024][ T403] proc_sys_call_handler+0x403/0x5e0 [ 45.775183][ T403] vfs_write+0x9e5/0x10a0 [ 45.775334][ T403] ksys_write+0xf5/0x1e0 [ 45.775479][ T403] do_syscall_64+0xc6/0x1e0 [ 45.775715][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.775909][ T403] [ 45.775989][ T403] [ 45.775989][ T403] stack backtrace: [ 45.776196][ T403] CPU: 1 PID: 403 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 45.776431][ T403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.776774][ T403] Call Trace: [ 45.776892][ T403] [ 45.776975][ T403] dump_stack_lvl+0x82/0xd0 [ 45.777140][ T403] print_bad_irq_dependency+0x957/0xd40 [ 45.777297][ T403] ? hlock_class+0x4e/0x130 [ 45.777458][ T403] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 45.777652][ T403] ? __pfx_usage_skip+0x10/0x10 [ 45.777887][ T403] ? __bfs+0x246/0x650 [ 45.778005][ T403] ? __pfx_usage_match+0x10/0x10 [ 45.778160][ T403] check_irq_usage+0x596/0x850 [ 45.778316][ T403] ? __pfx_check_irq_usage+0x10/0x10 [ 45.778548][ T403] ? __bfs+0x246/0x650 [ 45.778665][ T403] ? __pfx_hlock_conflict+0x10/0x10 [ 45.778832][ T403] ? check_path.constprop.0+0x24/0x50 [ 45.778993][ T403] ? check_noncircular+0x14c/0x3e0 [ 45.779146][ T403] ? __pfx_check_noncircular+0x10/0x10 [ 45.779387][ T403] ? check_prev_add+0x194/0xce0 [ 45.779540][ T403] check_prev_add+0x194/0xce0 [ 45.779695][ T403] ? validate_chain+0x130/0x9b0 [ 45.779851][ T403] validate_chain+0x71d/0x9b0 [ 45.780088][ T403] ? mark_lock+0x38/0x3e0 [ 45.780205][ T403] ? __pfx_validate_chain+0x10/0x10 [ 45.780363][ T403] ? hlock_class+0x4e/0x130 [ 45.780513][ T403] ? mark_lock+0x38/0x3e0 [ 45.780624][ T403] __lock_acquire+0xaf0/0x1570 [ 45.780863][ T403] lock_acquire.part.0+0xeb/0x330 [ 45.781003][ T403] ? __get_task_comm+0x27/0x70 [ 45.781141][ T403] ? mark_lock+0x38/0x3e0 [ 45.781245][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.781462][ T403] ? trace_lock_acquire+0x135/0x1c0 [ 45.781605][ T403] ? __get_task_comm+0x27/0x70 [ 45.781741][ T403] ? lock_acquire+0x32/0xc0 [ 45.781877][ T403] ? __get_task_comm+0x27/0x70 [ 45.782015][ T403] _raw_spin_lock+0x30/0x40 [ 45.782249][ T403] ? __get_task_comm+0x27/0x70 [ 45.782402][ T403] __get_task_comm+0x27/0x70 [ 45.782562][ T403] ref_tracker_alloc+0x2ee/0x490 [ 45.782718][ T403] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 45.783037][ T403] ? dev_get_by_index+0x177/0x270 [ 45.783195][ T403] ? netdev_get_by_index+0x5e/0x80 [ 45.783347][ T403] ? fib6_nh_init+0x3d8/0x15b0 [ 45.783502][ T403] ? ip6_route_info_create+0xf18/0x17d0 [ 45.783748][ T403] ? addrconf_f6i_alloc+0x265/0x560 [ 45.783902][ T403] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.784055][ T403] ? addrconf_join_anycast+0x1c0/0x220 [ 45.784207][ T403] ? dev_forward_change+0x2a6/0x7b0 [ 45.784361][ T403] ? addrconf_fixup_forwarding+0x23f/0x460 [ 45.784556][ T403] ? addrconf_sysctl_forward+0x212/0x2b0 [ 45.784708][ T403] ? proc_sys_call_handler+0x403/0x5e0 [ 45.784886][ T403] ? vfs_write+0x9e5/0x10a0 [ 45.785064][ T403] ? ksys_write+0xf5/0x1e0 [ 45.785253][ T403] ? do_syscall_64+0xc6/0x1e0 [ 45.785454][ T403] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.785670][ T403] ? dev_get_by_index+0x177/0x270 [ 45.785917][ T403] netdev_get_by_index+0x5e/0x80 [ 45.786101][ T403] fib6_nh_init+0x3d8/0x15b0 [ 45.786259][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.786462][ T403] ? __pfx_fib6_nh_init+0x10/0x10 [ 45.786716][ T403] ? kasan_save_track+0x14/0x30 [ 45.786911][ T403] ? __kasan_kmalloc+0x7f/0x90 [ 45.787126][ T403] ? __kmalloc+0x1d7/0x3c0 [ 45.787329][ T403] ? fib6_get_table+0x116/0x290 [ 45.787579][ T403] ip6_route_info_create+0xf18/0x17d0 [ 45.787809][ T403] ? __lock_release+0x103/0x460 [ 45.788061][ T403] ? __pfx_ip6_route_info_create+0x10/0x10 [ 45.788354][ T403] ? addrconf_f6i_alloc+0x12d/0x560 [ 45.788585][ T403] addrconf_f6i_alloc+0x265/0x560 [ 45.788836][ T403] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 45.789063][ T403] ? do_raw_write_lock+0x122/0x3b0 [ 45.789286][ T403] ? __pfx_do_raw_write_lock+0x10/0x10 [ 45.789525][ T403] ? lock_acquire+0x32/0xc0 [ 45.789925][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.790156][ T403] addrconf_join_anycast+0x1c0/0x220 [ 45.790371][ T403] ? mark_lock+0x38/0x3e0 [ 45.790541][ T403] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 45.790826][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 45.791116][ T403] dev_forward_change+0x2a6/0x7b0 [ 45.791340][ T403] ? __pfx_dev_forward_change+0x10/0x10 [ 45.791576][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 45.791802][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 45.792021][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.792311][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.792598][ T403] ? trace_kmalloc+0x2a/0xe0 [ 45.792977][ T403] ? __kmalloc_node+0x220/0x400 [ 45.793214][ T403] ? proc_sys_call_handler+0x30b/0x5e0 [ 45.793446][ T403] proc_sys_call_handler+0x403/0x5e0 [ 45.793697][ T403] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 45.794135][ T403] ? __lock_acquire+0xaf0/0x1570 [ 45.794376][ T403] vfs_write+0x9e5/0x10a0 [ 45.794555][ T403] ? do_user_addr_fault+0x449/0xbe0 [ 45.794792][ T403] ? __pfx_vfs_write+0x10/0x10 [ 45.795167][ T403] ? find_held_lock+0x2c/0x110 [ 45.795397][ T403] ? __pfx___lock_release+0x10/0x10 [ 45.795632][ T403] ? __fget_light+0x53/0x1e0 [ 45.795878][ T403] ksys_write+0xf5/0x1e0 [ 45.796041][ T403] ? __pfx_ksys_write+0x10/0x10 [ 45.796411][ T403] ? do_user_addr_fault+0x4bd/0xbe0 [ 45.796602][ T403] do_syscall_64+0xc6/0x1e0 [ 45.796763][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.796967][ T403] RIP: 0033:0x7fc39c128957 [ 45.797217][ 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 [ 45.797777][ T403] RSP: 002b:00007ffea6be6078 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 45.798181][ T403] RAX: ffffffffffffffda RBX: 000056163930d360 RCX: 00007fc39c128957 [ 45.798417][ T403] RDX: 0000000000000002 RSI: 000056163930d3a0 RDI: 0000000000000005 [ 45.798739][ T403] RBP: 000056163930f4d0 R08: 0000000000000003 R09: 0000000000000077 [ 45.798998][ T403] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 45.799216][ T403] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fc39c1df9c0 [ 45.799448][ T403]