[ 24.132001][ T236] ip (236) used greatest stack depth: 23200 bytes left [ 30.124495][ T310] gre: GRE over IPv4 demultiplexor driver [ 30.142148][ T310] ip_gre: GRE over IPv4 tunneling driver [ 32.308647][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 36.305666][ T372] GACT probability NOT on [ 39.807369][ T406] [ 39.807469][ T406] ===================================================== [ 39.807643][ T406] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.807846][ T406] 6.9.0-rc1-virtme #1 Not tainted [ 39.807987][ T406] ----------------------------------------------------- [ 39.808157][ T406] sysctl/406 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.808362][ T406] ffff888004f30968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.808632][ T406] [ 39.808632][ T406] and this task is already holding: [ 39.808837][ T406] ffff88800699a580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.809082][ T406] which would create a new lock dependency: [ 39.809249][ T406] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.809456][ T406] [ 39.809456][ T406] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.809685][ T406] (&ndev->lock){++--}-{2:2} [ 39.809689][ T406] [ 39.809689][ T406] ... which became SOFTIRQ-irq-safe at: [ 39.810022][ T406] __lock_acquire+0x797/0x1570 [ 39.810162][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.810298][ T406] _raw_write_lock+0x30/0x40 [ 39.810436][ T406] addrconf_rs_timer+0xa9/0x730 [ 39.810579][ T406] call_timer_fn+0x13b/0x230 [ 39.810717][ T406] __run_timers+0x545/0x810 [ 39.810852][ T406] run_timer_softirq+0xe8/0x1b0 [ 39.810988][ T406] __do_softirq+0x1f8/0x5df [ 39.811126][ T406] irq_exit_rcu+0x97/0xc0 [ 39.811264][ T406] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.811400][ T406] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.811572][ T406] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.811709][ T406] qlist_free_all+0x4c/0x140 [ 39.811846][ T406] kasan_quarantine_reduce+0x192/0x1e0 [ 39.811981][ T406] __kasan_slab_alloc+0x49/0x70 [ 39.812119][ T406] kmem_cache_alloc+0xef/0x270 [ 39.812260][ T406] getname_flags+0x53/0x3d0 [ 39.812398][ T406] do_sys_openat2+0xdb/0x160 [ 39.812535][ T406] __x64_sys_openat+0x123/0x1e0 [ 39.812670][ T406] do_syscall_64+0xc6/0x1e0 [ 39.812807][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.812978][ T406] [ 39.812978][ T406] to a SOFTIRQ-irq-unsafe lock: [ 39.813147][ T406] (&p->alloc_lock){+.+.}-{2:2} [ 39.813151][ T406] [ 39.813151][ T406] ... which became SOFTIRQ-irq-unsafe at: [ 39.813487][ T406] ... [ 39.813489][ T406] __lock_acquire+0x797/0x1570 [ 39.813692][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.813828][ T406] _raw_spin_lock+0x30/0x40 [ 39.813966][ T406] set_mems_allowed+0x1d/0x210 [ 39.814104][ T406] kernel_init_freeable+0x72/0x310 [ 39.814242][ T406] kernel_init+0x20/0x200 [ 39.814380][ T406] ret_from_fork+0x31/0x70 [ 39.814524][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.814660][ T406] [ 39.814660][ T406] other info that might help us debug this: [ 39.814660][ T406] [ 39.814925][ T406] Possible interrupt unsafe locking scenario: [ 39.814925][ T406] [ 39.815132][ T406] CPU0 CPU1 [ 39.815267][ T406] ---- ---- [ 39.815400][ T406] lock(&p->alloc_lock); [ 39.815507][ T406] local_irq_disable(); [ 39.815676][ T406] lock(&ndev->lock); [ 39.815845][ T406] lock(&p->alloc_lock); [ 39.816013][ T406] [ 39.816116][ T406] lock(&ndev->lock); [ 39.816222][ T406] [ 39.816222][ T406] *** DEADLOCK *** [ 39.816222][ T406] [ 39.816422][ T406] 3 locks held by sysctl/406: [ 39.816561][ T406] #0: ffff88800608c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.816811][ T406] #1: ffffffffabf969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.817090][ T406] #2: ffff88800699a580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.817332][ T406] [ 39.817332][ T406] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.817599][ T406] -> (&ndev->lock){++--}-{2:2} { [ 39.817743][ T406] HARDIRQ-ON-W at: [ 39.817848][ T406] __lock_acquire+0x797/0x1570 [ 39.818026][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.818199][ T406] _raw_write_lock_bh+0x38/0x50 [ 39.818372][ T406] addrconf_permanent_addr+0x6e/0x670 [ 39.818553][ T406] addrconf_notify+0x749/0xd60 [ 39.818730][ T406] notifier_call_chain+0xcd/0x150 [ 39.818905][ T406] __dev_notify_flags+0xe6/0x250 [ 39.819079][ T406] dev_change_flags+0xec/0x160 [ 39.819252][ T406] do_setlink+0x7d6/0x21e0 [ 39.819427][ T406] __rtnl_newlink+0xaa7/0xd80 [ 39.819601][ T406] rtnl_newlink+0x63/0xa0 [ 39.819775][ T406] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.819951][ T406] netlink_rcv_skb+0x130/0x360 [ 39.820125][ T406] netlink_unicast+0x449/0x710 [ 39.820297][ T406] netlink_sendmsg+0x723/0xbe0 [ 39.820472][ T406] ____sys_sendmsg+0x7b2/0xa10 [ 39.820650][ T406] ___sys_sendmsg+0xee/0x170 [ 39.820824][ T406] __sys_sendmsg+0xcd/0x170 [ 39.821002][ T406] do_syscall_64+0xc6/0x1e0 [ 39.821176][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.821384][ T406] HARDIRQ-ON-R at: [ 39.821489][ T406] __lock_acquire+0x797/0x1570 [ 39.821664][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.821838][ T406] _raw_read_lock_bh+0x44/0x80 [ 39.822011][ T406] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.822188][ T406] inet6_fill_link_af+0x5e/0xe0 [ 39.822363][ T406] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.822537][ T406] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.822711][ T406] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.822920][ T406] rtmsg_ifinfo+0x5b/0xa0 [ 39.823092][ T406] register_netdevice+0x1177/0x1690 [ 39.823268][ T406] register_netdev+0x20/0x40 [ 39.823444][ T406] sit_init_net+0x250/0x4f0 [ 39.823618][ T406] ops_init+0x9b/0x560 [ 39.823758][ T406] register_pernet_operations+0x2db/0x710 [ 39.823965][ T406] register_pernet_device+0x2a/0x60 [ 39.824135][ T406] sit_init+0x23/0xe0 [ 39.824277][ T406] do_one_initcall+0x8d/0x1e0 [ 39.824452][ T406] do_initcalls+0x1b2/0x3e0 [ 39.824627][ T406] kernel_init_freeable+0x232/0x310 [ 39.824800][ T406] kernel_init+0x20/0x200 [ 39.824972][ T406] ret_from_fork+0x31/0x70 [ 39.825147][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.825320][ T406] IN-SOFTIRQ-W at: [ 39.825426][ T406] __lock_acquire+0x797/0x1570 [ 39.825599][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.825774][ T406] _raw_write_lock+0x30/0x40 [ 39.825947][ T406] addrconf_rs_timer+0xa9/0x730 [ 39.826119][ T406] call_timer_fn+0x13b/0x230 [ 39.826294][ T406] __run_timers+0x545/0x810 [ 39.826466][ T406] run_timer_softirq+0xe8/0x1b0 [ 39.826642][ T406] __do_softirq+0x1f8/0x5df [ 39.826814][ T406] irq_exit_rcu+0x97/0xc0 [ 39.826989][ T406] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.827194][ T406] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.827399][ T406] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.827605][ T406] qlist_free_all+0x4c/0x140 [ 39.827782][ T406] kasan_quarantine_reduce+0x192/0x1e0 [ 39.827954][ T406] __kasan_slab_alloc+0x49/0x70 [ 39.828128][ T406] kmem_cache_alloc+0xef/0x270 [ 39.828301][ T406] getname_flags+0x53/0x3d0 [ 39.828477][ T406] do_sys_openat2+0xdb/0x160 [ 39.828652][ T406] __x64_sys_openat+0x123/0x1e0 [ 39.828827][ T406] do_syscall_64+0xc6/0x1e0 [ 39.829000][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.829205][ T406] IN-SOFTIRQ-R at: [ 39.829311][ T406] __lock_acquire+0x797/0x1570 [ 39.829483][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.829656][ T406] _raw_read_lock_bh+0x44/0x80 [ 39.829830][ T406] ipv6_get_lladdr+0xa9/0x3e0 [ 39.830006][ T406] addrconf_rs_timer+0x24a/0x730 [ 39.830177][ T406] call_timer_fn+0x13b/0x230 [ 39.830348][ T406] __run_timers+0x545/0x810 [ 39.830523][ T406] run_timer_softirq+0xe8/0x1b0 [ 39.830695][ T406] __do_softirq+0x1f8/0x5df [ 39.830870][ T406] irq_exit_rcu+0x97/0xc0 [ 39.831047][ T406] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.831251][ T406] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.831455][ T406] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.831746][ T406] qlist_free_all+0x4c/0x140 [ 39.831917][ T406] kasan_quarantine_reduce+0x192/0x1e0 [ 39.832087][ T406] __kasan_slab_alloc+0x49/0x70 [ 39.832261][ T406] kmem_cache_alloc+0xef/0x270 [ 39.832515][ T406] getname_flags+0x53/0x3d0 [ 39.832687][ T406] do_sys_openat2+0xdb/0x160 [ 39.832858][ T406] __x64_sys_openat+0x123/0x1e0 [ 39.833112][ T406] do_syscall_64+0xc6/0x1e0 [ 39.833284][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.833493][ T406] INITIAL USE at: [ 39.833598][ T406] __lock_acquire+0x797/0x1570 [ 39.833932][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.834104][ T406] _raw_write_lock_bh+0x38/0x50 [ 39.834277][ T406] addrconf_permanent_addr+0x6e/0x670 [ 39.834530][ T406] addrconf_notify+0x749/0xd60 [ 39.834702][ T406] notifier_call_chain+0xcd/0x150 [ 39.834878][ T406] __dev_notify_flags+0xe6/0x250 [ 39.835131][ T406] dev_change_flags+0xec/0x160 [ 39.835302][ T406] do_setlink+0x7d6/0x21e0 [ 39.835472][ T406] __rtnl_newlink+0xaa7/0xd80 [ 39.835644][ T406] rtnl_newlink+0x63/0xa0 [ 39.835896][ T406] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.836070][ T406] netlink_rcv_skb+0x130/0x360 [ 39.836244][ T406] netlink_unicast+0x449/0x710 [ 39.836497][ T406] netlink_sendmsg+0x723/0xbe0 [ 39.836670][ T406] ____sys_sendmsg+0x7b2/0xa10 [ 39.836844][ T406] ___sys_sendmsg+0xee/0x170 [ 39.837017][ T406] __sys_sendmsg+0xcd/0x170 [ 39.837269][ T406] do_syscall_64+0xc6/0x1e0 [ 39.837442][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.837647][ T406] INITIAL READ USE at: [ 39.837830][ T406] __lock_acquire+0x797/0x1570 [ 39.838003][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.838177][ T406] _raw_read_lock_bh+0x44/0x80 [ 39.838350][ T406] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.838647][ T406] inet6_fill_link_af+0x5e/0xe0 [ 39.838820][ T406] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.838993][ T406] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.839281][ T406] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.839489][ T406] rtmsg_ifinfo+0x5b/0xa0 [ 39.839661][ T406] register_netdevice+0x1177/0x1690 [ 39.839953][ T406] register_netdev+0x20/0x40 [ 39.840124][ T406] sit_init_net+0x250/0x4f0 [ 39.840297][ T406] ops_init+0x9b/0x560 [ 39.840551][ T406] register_pernet_operations+0x2db/0x710 [ 39.840757][ T406] register_pernet_device+0x2a/0x60 [ 39.840960][ T406] sit_init+0x23/0xe0 [ 39.841218][ T406] do_one_initcall+0x8d/0x1e0 [ 39.841391][ T406] do_initcalls+0x1b2/0x3e0 [ 39.841564][ T406] kernel_init_freeable+0x232/0x310 [ 39.841850][ T406] kernel_init+0x20/0x200 [ 39.842023][ T406] ret_from_fork+0x31/0x70 [ 39.842195][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.842372][ T406] } [ 39.842523][ T406] ... key at: [] __key.37+0x0/0x40 [ 39.842733][ T406] [ 39.842733][ T406] the dependencies between the lock to be acquired [ 39.842735][ T406] and SOFTIRQ-irq-unsafe lock: [ 39.843179][ T406] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.843322][ T406] HARDIRQ-ON-W at: [ 39.843428][ T406] __lock_acquire+0x797/0x1570 [ 39.843609][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.843864][ T406] _raw_spin_lock+0x30/0x40 [ 39.844037][ T406] set_mems_allowed+0x1d/0x210 [ 39.844211][ T406] kernel_init_freeable+0x72/0x310 [ 39.844384][ T406] kernel_init+0x20/0x200 [ 39.844717][ T406] ret_from_fork+0x31/0x70 [ 39.844889][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.845067][ T406] SOFTIRQ-ON-W at: [ 39.845249][ T406] __lock_acquire+0x797/0x1570 [ 39.845419][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.845590][ T406] _raw_spin_lock+0x30/0x40 [ 39.845761][ T406] set_mems_allowed+0x1d/0x210 [ 39.846023][ T406] kernel_init_freeable+0x72/0x310 [ 39.846194][ T406] kernel_init+0x20/0x200 [ 39.846372][ T406] ret_from_fork+0x31/0x70 [ 39.846559][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.846746][ T406] INITIAL USE at: [ 39.846859][ T406] __lock_acquire+0x797/0x1570 [ 39.847048][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.847316][ T406] _raw_spin_lock+0x30/0x40 [ 39.847502][ T406] set_mems_allowed+0x1d/0x210 [ 39.847692][ T406] kernel_init_freeable+0x72/0x310 [ 39.847966][ T406] kernel_init+0x20/0x200 [ 39.848156][ T406] ret_from_fork+0x31/0x70 [ 39.848343][ T406] ret_from_fork_asm+0x1a/0x30 [ 39.848540][ T406] } [ 39.848616][ T406] ... key at: [] __key.387+0x0/0x40 [ 39.848839][ T406] ... acquired at: [ 39.848957][ T406] check_prev_add+0x194/0xce0 [ 39.849106][ T406] validate_chain+0x71d/0x9b0 [ 39.849333][ T406] __lock_acquire+0xaf0/0x1570 [ 39.849477][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.849626][ T406] _raw_spin_lock+0x30/0x40 [ 39.849774][ T406] __get_task_comm+0x27/0x70 [ 39.849925][ T406] ref_tracker_alloc+0x2ee/0x490 [ 39.850154][ T406] netdev_get_by_index+0x5e/0x80 [ 39.850304][ T406] fib6_nh_init+0x3d8/0x15b0 [ 39.850455][ T406] ip6_route_info_create+0xf18/0x17d0 [ 39.850600][ T406] addrconf_f6i_alloc+0x265/0x560 [ 39.850832][ T406] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.850979][ T406] addrconf_join_anycast+0x1c0/0x220 [ 39.851131][ T406] dev_forward_change+0x2a6/0x7b0 [ 39.851278][ T406] addrconf_fixup_forwarding+0x23f/0x460 [ 39.851621][ T406] addrconf_sysctl_forward+0x212/0x2b0 [ 39.851760][ T406] proc_sys_call_handler+0x403/0x5e0 [ 39.851924][ T406] vfs_write+0x9e5/0x10a0 [ 39.852080][ T406] ksys_write+0xf5/0x1e0 [ 39.852315][ T406] do_syscall_64+0xc6/0x1e0 [ 39.852459][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.852653][ T406] [ 39.852724][ T406] [ 39.852724][ T406] stack backtrace: [ 39.852975][ T406] CPU: 3 PID: 406 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.853185][ T406] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.853488][ T406] Call Trace: [ 39.853592][ T406] [ 39.853662][ T406] dump_stack_lvl+0x82/0xd0 [ 39.853802][ T406] print_bad_irq_dependency+0x957/0xd40 [ 39.853944][ T406] ? hlock_class+0x4e/0x130 [ 39.854089][ T406] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.854342][ T406] ? __pfx_usage_skip+0x10/0x10 [ 39.854476][ T406] ? __bfs+0x246/0x650 [ 39.854579][ T406] ? __pfx_usage_match+0x10/0x10 [ 39.854715][ T406] check_irq_usage+0x596/0x850 [ 39.854934][ T406] ? __pfx_check_irq_usage+0x10/0x10 [ 39.855073][ T406] ? __bfs+0x246/0x650 [ 39.855176][ T406] ? __pfx_hlock_conflict+0x10/0x10 [ 39.855327][ T406] ? check_path.constprop.0+0x24/0x50 [ 39.855465][ T406] ? check_noncircular+0x14c/0x3e0 [ 39.855685][ T406] ? __pfx_check_noncircular+0x10/0x10 [ 39.855825][ T406] ? check_prev_add+0x194/0xce0 [ 39.855974][ T406] check_prev_add+0x194/0xce0 [ 39.856112][ T406] ? validate_chain+0x130/0x9b0 [ 39.856328][ T406] validate_chain+0x71d/0x9b0 [ 39.856467][ T406] ? mark_lock+0x38/0x3e0 [ 39.856572][ T406] ? __pfx_validate_chain+0x10/0x10 [ 39.856711][ T406] ? hlock_class+0x4e/0x130 [ 39.856935][ T406] ? mark_lock+0x38/0x3e0 [ 39.857040][ T406] __lock_acquire+0xaf0/0x1570 [ 39.857202][ T406] lock_acquire.part.0+0xeb/0x330 [ 39.857338][ T406] ? __get_task_comm+0x27/0x70 [ 39.857474][ T406] ? mark_lock+0x38/0x3e0 [ 39.857578][ T406] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.857726][ T406] ? trace_lock_acquire+0x135/0x1c0 [ 39.857875][ T406] ? __get_task_comm+0x27/0x70 [ 39.858028][ T406] ? lock_acquire+0x32/0xc0 [ 39.858254][ T406] ? __get_task_comm+0x27/0x70 [ 39.858403][ T406] _raw_spin_lock+0x30/0x40 [ 39.858567][ T406] ? __get_task_comm+0x27/0x70 [ 39.858729][ T406] __get_task_comm+0x27/0x70 [ 39.858865][ T406] ref_tracker_alloc+0x2ee/0x490 [ 39.859088][ T406] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.859224][ T406] ? dev_get_by_index+0x177/0x270 [ 39.859359][ T406] ? netdev_get_by_index+0x5e/0x80 [ 39.859497][ T406] ? fib6_nh_init+0x3d8/0x15b0 [ 39.859635][ T406] ? ip6_route_info_create+0xf18/0x17d0 [ 39.859771][ T406] ? addrconf_f6i_alloc+0x265/0x560 [ 39.859908][ T406] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.860051][ T406] ? addrconf_join_anycast+0x1c0/0x220 [ 39.860267][ T406] ? dev_forward_change+0x2a6/0x7b0 [ 39.860403][ T406] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.860573][ T406] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.860710][ T406] ? proc_sys_call_handler+0x403/0x5e0 [ 39.860926][ T406] ? vfs_write+0x9e5/0x10a0 [ 39.861064][ T406] ? ksys_write+0xf5/0x1e0 [ 39.861225][ T406] ? do_syscall_64+0xc6/0x1e0 [ 39.861363][ T406] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.861534][ T406] ? dev_get_by_index+0x177/0x270 [ 39.861675][ T406] netdev_get_by_index+0x5e/0x80 [ 39.861814][ T406] fib6_nh_init+0x3d8/0x15b0 [ 39.861952][ T406] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.862203][ T406] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.862338][ T406] ? kasan_save_track+0x14/0x30 [ 39.862473][ T406] ? __kasan_kmalloc+0x7f/0x90 [ 39.862612][ T406] ? __kmalloc+0x1d7/0x3c0 [ 39.862827][ T406] ? fib6_get_table+0x116/0x290 [ 39.862966][ T406] ip6_route_info_create+0xf18/0x17d0 [ 39.863104][ T406] ? __lock_release+0x103/0x460 [ 39.863242][ T406] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.863490][ T406] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.863627][ T406] addrconf_f6i_alloc+0x265/0x560 [ 39.863768][ T406] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.863911][ T406] ? do_raw_write_lock+0x122/0x3b0 [ 39.864047][ T406] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.864260][ T406] ? lock_acquire+0x32/0xc0 [ 39.864399][ T406] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.864537][ T406] addrconf_join_anycast+0x1c0/0x220 [ 39.864676][ T406] ? mark_lock+0x38/0x3e0 [ 39.864861][ T406] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.865030][ T406] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.865200][ T406] dev_forward_change+0x2a6/0x7b0 [ 39.865337][ T406] ? __pfx_dev_forward_change+0x10/0x10 [ 39.865555][ T406] addrconf_fixup_forwarding+0x23f/0x460 [ 39.865697][ T406] addrconf_sysctl_forward+0x212/0x2b0 [ 39.865835][ T406] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.866005][ T406] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.866333][ T406] ? trace_kmalloc+0x2a/0xe0 [ 39.866468][ T406] ? __kmalloc_node+0x220/0x400 [ 39.866607][ T406] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.866743][ T406] proc_sys_call_handler+0x403/0x5e0 [ 39.866967][ T406] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.867135][ T406] ? __lock_acquire+0xaf0/0x1570 [ 39.867717][ T406] vfs_write+0x9e5/0x10a0 [ 39.867822][ T406] ? do_user_addr_fault+0x449/0xbe0 [ 39.867960][ T406] ? __pfx_vfs_write+0x10/0x10 [ 39.868121][ T406] ? find_held_lock+0x2c/0x110 [ 39.868261][ T406] ? __pfx___lock_release+0x10/0x10 [ 39.868397][ T406] ? __fget_light+0x53/0x1e0 [ 39.868626][ T406] ksys_write+0xf5/0x1e0 [ 39.868728][ T406] ? __pfx_ksys_write+0x10/0x10 [ 39.868889][ T406] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.869027][ T406] do_syscall_64+0xc6/0x1e0 [ 39.869164][ T406] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.869411][ T406] RIP: 0033:0x7f4f0c8b2957 [ 39.869554][ T406] 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 [ 39.870128][ T406] RSP: 002b:00007ffc63420d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.870336][ T406] RAX: ffffffffffffffda RBX: 000055cb403e9360 RCX: 00007f4f0c8b2957 [ 39.870540][ T406] RDX: 0000000000000002 RSI: 000055cb403e93a0 RDI: 0000000000000005 [ 39.870742][ T406] RBP: 000055cb403eb4d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.870959][ T406] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.871247][ T406] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f4f0c9699c0 [ 39.871453][ T406]