[ 29.924917][ T311] gre: GRE over IPv4 demultiplexor driver [ 29.940255][ T311] ip_gre: GRE over IPv4 tunneling driver [ 32.094850][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 36.118489][ T371] GACT probability NOT on [ 39.607831][ T404] [ 39.607951][ T404] ===================================================== [ 39.608141][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.608371][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 39.608538][ T404] ----------------------------------------------------- [ 39.608739][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.608964][ T404] ffff888007952c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.609243][ T404] [ 39.609243][ T404] and this task is already holding: [ 39.609469][ T404] ffff888005175580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.609748][ T404] which would create a new lock dependency: [ 39.609940][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.610170][ T404] [ 39.610170][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.610436][ T404] (&ndev->lock){++--}-{2:2} [ 39.610440][ T404] [ 39.610440][ T404] ... which became SOFTIRQ-irq-safe at: [ 39.610810][ T404] __lock_acquire+0x797/0x1570 [ 39.610967][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.611125][ T404] _raw_write_lock+0x30/0x40 [ 39.611282][ T404] addrconf_rs_timer+0xa9/0x730 [ 39.611447][ T404] call_timer_fn+0x13b/0x230 [ 39.611616][ T404] __run_timers+0x545/0x810 [ 39.611788][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.611940][ T404] __do_softirq+0x1f8/0x5df [ 39.612090][ T404] irq_exit_rcu+0x97/0xc0 [ 39.612242][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.612401][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.612628][ T404] stack_access_ok+0x0/0x1f0 [ 39.612783][ T404] unwind_next_frame+0x894/0x1d00 [ 39.612948][ T404] arch_stack_walk+0x8c/0xf0 [ 39.613100][ T404] stack_trace_save+0x94/0xd0 [ 39.613275][ T404] set_track_prepare+0x79/0xd0 [ 39.613429][ T404] __alloc_object+0x2bf/0x6f0 [ 39.613579][ T404] __create_object+0x22/0xb0 [ 39.613734][ T404] kmem_cache_alloc+0x208/0x270 [ 39.613899][ T404] vm_area_dup+0x20/0x150 [ 39.614051][ T404] __split_vma+0x131/0xd10 [ 39.614208][ T404] do_vmi_align_munmap.constprop.0+0x24d/0x10a0 [ 39.614404][ T404] mmap_region+0x15c/0x2110 [ 39.614593][ T404] do_mmap+0x622/0xc70 [ 39.614712][ T404] vm_mmap_pgoff+0x113/0x2f0 [ 39.614873][ T404] ksys_mmap_pgoff+0x290/0x410 [ 39.615032][ T404] do_syscall_64+0xc6/0x1e0 [ 39.615189][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.615387][ T404] [ 39.615387][ T404] to a SOFTIRQ-irq-unsafe lock: [ 39.615576][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 39.615581][ T404] [ 39.615581][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 39.615953][ T404] ... [ 39.615954][ T404] __lock_acquire+0x797/0x1570 [ 39.616185][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.616336][ T404] _raw_spin_lock+0x30/0x40 [ 39.616498][ T404] set_mems_allowed+0x1d/0x210 [ 39.616655][ T404] kernel_init_freeable+0x72/0x310 [ 39.616811][ T404] kernel_init+0x20/0x200 [ 39.616968][ T404] ret_from_fork+0x31/0x70 [ 39.617136][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.617289][ T404] [ 39.617289][ T404] other info that might help us debug this: [ 39.617289][ T404] [ 39.617586][ T404] Possible interrupt unsafe locking scenario: [ 39.617586][ T404] [ 39.617813][ T404] CPU0 CPU1 [ 39.617966][ T404] ---- ---- [ 39.618125][ T404] lock(&p->alloc_lock); [ 39.618259][ T404] local_irq_disable(); [ 39.618446][ T404] lock(&ndev->lock); [ 39.618638][ T404] lock(&p->alloc_lock); [ 39.618828][ T404] [ 39.618943][ T404] lock(&ndev->lock); [ 39.619067][ T404] [ 39.619067][ T404] *** DEADLOCK *** [ 39.619067][ T404] [ 39.619301][ T404] 3 locks held by sysctl/404: [ 39.619466][ T404] #0: ffff888005f493f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.619738][ T404] #1: ffffffffb81969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.620047][ T404] #2: ffff888005175580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.620318][ T404] [ 39.620318][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.620622][ T404] -> (&ndev->lock){++--}-{2:2} { [ 39.620781][ T404] HARDIRQ-ON-W at: [ 39.620898][ T404] __lock_acquire+0x797/0x1570 [ 39.621095][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.621292][ T404] _raw_write_lock_bh+0x38/0x50 [ 39.621505][ T404] addrconf_permanent_addr+0x6e/0x670 [ 39.621698][ T404] addrconf_notify+0x749/0xd60 [ 39.621897][ T404] notifier_call_chain+0xcd/0x150 [ 39.622094][ T404] __dev_notify_flags+0xe6/0x250 [ 39.622290][ T404] dev_change_flags+0xec/0x160 [ 39.622491][ T404] do_setlink+0x7d6/0x21e0 [ 39.622718][ T404] __rtnl_newlink+0xaa7/0xd80 [ 39.622936][ T404] rtnl_newlink+0x63/0xa0 [ 39.623129][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.623352][ T404] netlink_rcv_skb+0x130/0x360 [ 39.623544][ T404] netlink_unicast+0x449/0x710 [ 39.623733][ T404] netlink_sendmsg+0x723/0xbe0 [ 39.623926][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 39.624122][ T404] ___sys_sendmsg+0xee/0x170 [ 39.624315][ T404] __sys_sendmsg+0xcd/0x170 [ 39.624503][ T404] do_syscall_64+0xc6/0x1e0 [ 39.624698][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.624928][ T404] HARDIRQ-ON-R at: [ 39.625043][ T404] __lock_acquire+0x797/0x1570 [ 39.625238][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.625430][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.625621][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.625814][ T404] inet6_fill_link_af+0x5e/0xe0 [ 39.626008][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.626197][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.626390][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.626616][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 39.626805][ T404] register_netdevice+0x1177/0x1690 [ 39.626997][ T404] register_netdev+0x20/0x40 [ 39.627191][ T404] sit_init_net+0x250/0x4f0 [ 39.627386][ T404] ops_init+0x9b/0x560 [ 39.627542][ T404] register_pernet_operations+0x2db/0x710 [ 39.627772][ T404] register_pernet_device+0x2a/0x60 [ 39.627969][ T404] sit_init+0x23/0xe0 [ 39.628128][ T404] do_one_initcall+0x8d/0x1e0 [ 39.628324][ T404] do_initcalls+0x1b2/0x3e0 [ 39.628518][ T404] kernel_init_freeable+0x232/0x310 [ 39.628706][ T404] kernel_init+0x20/0x200 [ 39.628909][ T404] ret_from_fork+0x31/0x70 [ 39.629104][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.629298][ T404] IN-SOFTIRQ-W at: [ 39.629411][ T404] __lock_acquire+0x797/0x1570 [ 39.629601][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.629796][ T404] _raw_write_lock+0x30/0x40 [ 39.629985][ T404] addrconf_rs_timer+0xa9/0x730 [ 39.630179][ T404] call_timer_fn+0x13b/0x230 [ 39.630380][ T404] __run_timers+0x545/0x810 [ 39.630575][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.630766][ T404] __do_softirq+0x1f8/0x5df [ 39.630958][ T404] irq_exit_rcu+0x97/0xc0 [ 39.631149][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.631382][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.631610][ T404] stack_access_ok+0x0/0x1f0 [ 39.631802][ T404] unwind_next_frame+0x894/0x1d00 [ 39.631994][ T404] arch_stack_walk+0x8c/0xf0 [ 39.632194][ T404] stack_trace_save+0x94/0xd0 [ 39.632385][ T404] set_track_prepare+0x79/0xd0 [ 39.632664][ T404] __alloc_object+0x2bf/0x6f0 [ 39.632859][ T404] __create_object+0x22/0xb0 [ 39.633050][ T404] kmem_cache_alloc+0x208/0x270 [ 39.633333][ T404] vm_area_dup+0x20/0x150 [ 39.633536][ T404] __split_vma+0x131/0xd10 [ 39.633726][ T404] do_vmi_align_munmap.constprop.0+0x24d/0x10a0 [ 39.634037][ T404] mmap_region+0x15c/0x2110 [ 39.634230][ T404] do_mmap+0x622/0xc70 [ 39.634382][ T404] vm_mmap_pgoff+0x113/0x2f0 [ 39.634573][ T404] ksys_mmap_pgoff+0x290/0x410 [ 39.634951][ T404] do_syscall_64+0xc6/0x1e0 [ 39.635142][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.635369][ T404] IN-SOFTIRQ-R at: [ 39.635490][ T404] __lock_acquire+0x797/0x1570 [ 39.635686][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.635877][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.636068][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 39.636343][ T404] addrconf_rs_timer+0x24a/0x730 [ 39.636532][ T404] call_timer_fn+0x13b/0x230 [ 39.636725][ T404] __run_timers+0x545/0x810 [ 39.637009][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.637202][ T404] __do_softirq+0x1f8/0x5df [ 39.637392][ T404] irq_exit_rcu+0x97/0xc0 [ 39.637592][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.637903][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.638132][ T404] stack_access_ok+0x0/0x1f0 [ 39.638327][ T404] unwind_next_frame+0x894/0x1d00 [ 39.638600][ T404] arch_stack_walk+0x8c/0xf0 [ 39.638789][ T404] stack_trace_save+0x94/0xd0 [ 39.638980][ T404] set_track_prepare+0x79/0xd0 [ 39.639253][ T404] __alloc_object+0x2bf/0x6f0 [ 39.639449][ T404] __create_object+0x22/0xb0 [ 39.639640][ T404] kmem_cache_alloc+0x208/0x270 [ 39.639839][ T404] vm_area_dup+0x20/0x150 [ 39.640122][ T404] __split_vma+0x131/0xd10 [ 39.640310][ T404] do_vmi_align_munmap.constprop.0+0x24d/0x10a0 [ 39.640542][ T404] mmap_region+0x15c/0x2110 [ 39.640735][ T404] do_mmap+0x622/0xc70 [ 39.640887][ T404] vm_mmap_pgoff+0x113/0x2f0 [ 39.641080][ T404] ksys_mmap_pgoff+0x290/0x410 [ 39.641361][ T404] do_syscall_64+0xc6/0x1e0 [ 39.641556][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.641786][ T404] INITIAL USE at: [ 39.641901][ T404] __lock_acquire+0x797/0x1570 [ 39.642174][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.642366][ T404] _raw_write_lock_bh+0x38/0x50 [ 39.642561][ T404] addrconf_permanent_addr+0x6e/0x670 [ 39.642836][ T404] addrconf_notify+0x749/0xd60 [ 39.643027][ T404] notifier_call_chain+0xcd/0x150 [ 39.643253][ T404] __dev_notify_flags+0xe6/0x250 [ 39.643453][ T404] dev_change_flags+0xec/0x160 [ 39.643643][ T404] do_setlink+0x7d6/0x21e0 [ 39.643833][ T404] __rtnl_newlink+0xaa7/0xd80 [ 39.644029][ T404] rtnl_newlink+0x63/0xa0 [ 39.644300][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.644506][ T404] netlink_rcv_skb+0x130/0x360 [ 39.644715][ T404] netlink_unicast+0x449/0x710 [ 39.644919][ T404] netlink_sendmsg+0x723/0xbe0 [ 39.645196][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 39.645391][ T404] ___sys_sendmsg+0xee/0x170 [ 39.645578][ T404] __sys_sendmsg+0xcd/0x170 [ 39.645853][ T404] do_syscall_64+0xc6/0x1e0 [ 39.646044][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.646272][ T404] INITIAL READ USE at: [ 39.646393][ T404] __lock_acquire+0x797/0x1570 [ 39.646751][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.646941][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.647130][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.647445][ T404] inet6_fill_link_af+0x5e/0xe0 [ 39.647632][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.647818][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.648146][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.648379][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 39.648586][ T404] register_netdevice+0x1177/0x1690 [ 39.648829][ T404] register_netdev+0x20/0x40 [ 39.649019][ T404] sit_init_net+0x250/0x4f0 [ 39.649207][ T404] ops_init+0x9b/0x560 [ 39.649404][ T404] register_pernet_operations+0x2db/0x710 [ 39.649639][ T404] register_pernet_device+0x2a/0x60 [ 39.649868][ T404] sit_init+0x23/0xe0 [ 39.650061][ T404] do_one_initcall+0x8d/0x1e0 [ 39.650293][ T404] do_initcalls+0x1b2/0x3e0 [ 39.650495][ T404] kernel_init_freeable+0x232/0x310 [ 39.650726][ T404] kernel_init+0x20/0x200 [ 39.650916][ T404] ret_from_fork+0x31/0x70 [ 39.651106][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.651298][ T404] } [ 39.651393][ T404] ... key at: [] __key.37+0x0/0x40 [ 39.651641][ T404] [ 39.651641][ T404] the dependencies between the lock to be acquired [ 39.651643][ T404] and SOFTIRQ-irq-unsafe lock: [ 39.652046][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.652201][ T404] HARDIRQ-ON-W at: [ 39.652314][ T404] __lock_acquire+0x797/0x1570 [ 39.652505][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.652693][ T404] _raw_spin_lock+0x30/0x40 [ 39.652881][ T404] set_mems_allowed+0x1d/0x210 [ 39.653073][ T404] kernel_init_freeable+0x72/0x310 [ 39.653277][ T404] kernel_init+0x20/0x200 [ 39.653468][ T404] ret_from_fork+0x31/0x70 [ 39.653655][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.653842][ T404] SOFTIRQ-ON-W at: [ 39.653955][ T404] __lock_acquire+0x797/0x1570 [ 39.654226][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.654417][ T404] _raw_spin_lock+0x30/0x40 [ 39.654606][ T404] set_mems_allowed+0x1d/0x210 [ 39.654885][ T404] kernel_init_freeable+0x72/0x310 [ 39.655082][ T404] kernel_init+0x20/0x200 [ 39.655267][ T404] ret_from_fork+0x31/0x70 [ 39.655460][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.655651][ T404] INITIAL USE at: [ 39.655762][ T404] __lock_acquire+0x797/0x1570 [ 39.655952][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.656317][ T404] _raw_spin_lock+0x30/0x40 [ 39.656508][ T404] set_mems_allowed+0x1d/0x210 [ 39.656700][ T404] kernel_init_freeable+0x72/0x310 [ 39.656890][ T404] kernel_init+0x20/0x200 [ 39.657158][ T404] ret_from_fork+0x31/0x70 [ 39.657347][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.657537][ T404] } [ 39.657618][ T404] ... key at: [] __key.387+0x0/0x40 [ 39.657928][ T404] ... acquired at: [ 39.658042][ T404] check_prev_add+0x194/0xce0 [ 39.658198][ T404] validate_chain+0x71d/0x9b0 [ 39.658348][ T404] __lock_acquire+0xaf0/0x1570 [ 39.658576][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.658728][ T404] _raw_spin_lock+0x30/0x40 [ 39.658880][ T404] __get_task_comm+0x27/0x70 [ 39.659030][ T404] ref_tracker_alloc+0x2ee/0x490 [ 39.659264][ T404] netdev_get_by_index+0x5e/0x80 [ 39.659418][ T404] fib6_nh_init+0x3d8/0x15b0 [ 39.659571][ T404] ip6_route_info_create+0xf18/0x17d0 [ 39.659722][ T404] addrconf_f6i_alloc+0x265/0x560 [ 39.659967][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.660122][ T404] addrconf_join_anycast+0x1c0/0x220 [ 39.660270][ T404] dev_forward_change+0x2a6/0x7b0 [ 39.660422][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 39.660610][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 39.660760][ T404] proc_sys_call_handler+0x403/0x5e0 [ 39.660915][ T404] vfs_write+0x9e5/0x10a0 [ 39.661066][ T404] ksys_write+0xf5/0x1e0 [ 39.661215][ T404] do_syscall_64+0xc6/0x1e0 [ 39.661450][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.661632][ T404] [ 39.661714][ T404] [ 39.661714][ T404] stack backtrace: [ 39.661901][ T404] CPU: 1 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.662209][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.662537][ T404] Call Trace: [ 39.662653][ T404] [ 39.662828][ T404] dump_stack_lvl+0x82/0xd0 [ 39.662986][ T404] print_bad_irq_dependency+0x957/0xd40 [ 39.663136][ T404] ? hlock_class+0x4e/0x130 [ 39.663295][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.663562][ T404] ? __pfx_usage_skip+0x10/0x10 [ 39.663710][ T404] ? __bfs+0x246/0x650 [ 39.663822][ T404] ? __pfx_usage_match+0x10/0x10 [ 39.663974][ T404] check_irq_usage+0x596/0x850 [ 39.664125][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 39.664366][ T404] ? __bfs+0x246/0x650 [ 39.664480][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 39.664629][ T404] ? check_path.constprop.0+0x24/0x50 [ 39.664782][ T404] ? check_noncircular+0x14c/0x3e0 [ 39.665015][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 39.665174][ T404] ? check_prev_add+0x194/0xce0 [ 39.665323][ T404] check_prev_add+0x194/0xce0 [ 39.665476][ T404] ? validate_chain+0x130/0x9b0 [ 39.665707][ T404] validate_chain+0x71d/0x9b0 [ 39.665859][ T404] ? mark_lock+0x38/0x3e0 [ 39.665972][ T404] ? __pfx_validate_chain+0x10/0x10 [ 39.666125][ T404] ? hlock_class+0x4e/0x130 [ 39.666275][ T404] ? mark_lock+0x38/0x3e0 [ 39.666470][ T404] __lock_acquire+0xaf0/0x1570 [ 39.666622][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.666770][ T404] ? __get_task_comm+0x27/0x70 [ 39.666921][ T404] ? mark_lock+0x38/0x3e0 [ 39.667035][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.667268][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 39.667418][ T404] ? __get_task_comm+0x27/0x70 [ 39.667565][ T404] ? lock_acquire+0x32/0xc0 [ 39.667713][ T404] ? __get_task_comm+0x27/0x70 [ 39.668037][ T404] _raw_spin_lock+0x30/0x40 [ 39.668187][ T404] ? __get_task_comm+0x27/0x70 [ 39.668337][ T404] __get_task_comm+0x27/0x70 [ 39.668491][ T404] ref_tracker_alloc+0x2ee/0x490 [ 39.668643][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.668793][ T404] ? dev_get_by_index+0x177/0x270 [ 39.668942][ T404] ? netdev_get_by_index+0x5e/0x80 [ 39.669090][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 39.669320][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 39.669472][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 39.669620][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.669774][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 39.669924][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 39.670154][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.670339][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.670495][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 39.670650][ T404] ? vfs_write+0x9e5/0x10a0 [ 39.670880][ T404] ? ksys_write+0xf5/0x1e0 [ 39.671031][ T404] ? do_syscall_64+0xc6/0x1e0 [ 39.671180][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.671372][ T404] ? dev_get_by_index+0x177/0x270 [ 39.671607][ T404] netdev_get_by_index+0x5e/0x80 [ 39.671755][ T404] fib6_nh_init+0x3d8/0x15b0 [ 39.671905][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.672093][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.672322][ T404] ? kasan_save_track+0x14/0x30 [ 39.672473][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 39.672630][ T404] ? __kmalloc+0x1d7/0x3c0 [ 39.672780][ T404] ? fib6_get_table+0x116/0x290 [ 39.673030][ T404] ip6_route_info_create+0xf18/0x17d0 [ 39.673187][ T404] ? __lock_release+0x103/0x460 [ 39.673339][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.673524][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.673677][ T404] addrconf_f6i_alloc+0x265/0x560 [ 39.673827][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.673982][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 39.674132][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.674363][ T404] ? lock_acquire+0x32/0xc0 [ 39.674532][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.674687][ T404] addrconf_join_anycast+0x1c0/0x220 [ 39.674835][ T404] ? mark_lock+0x38/0x3e0 [ 39.674949][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.675219][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.675408][ T404] dev_forward_change+0x2a6/0x7b0 [ 39.675559][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 39.675800][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 39.675953][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 39.676102][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.676287][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.676553][ T404] ? trace_kmalloc+0x2a/0xe0 [ 39.676710][ T404] ? __kmalloc_node+0x220/0x400 [ 39.676869][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.677021][ T404] proc_sys_call_handler+0x403/0x5e0 [ 39.677253][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.677443][ T404] ? __lock_acquire+0xaf0/0x1570 [ 39.677594][ T404] vfs_write+0x9e5/0x10a0 [ 39.677709][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 39.677864][ T404] ? __pfx_vfs_write+0x10/0x10 [ 39.678102][ T404] ? find_held_lock+0x2c/0x110 [ 39.678253][ T404] ? __pfx___lock_release+0x10/0x10 [ 39.678403][ T404] ? __fget_light+0x53/0x1e0 [ 39.678566][ T404] ksys_write+0xf5/0x1e0 [ 39.678760][ T404] ? __pfx_ksys_write+0x10/0x10 [ 39.678911][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.679059][ T404] do_syscall_64+0xc6/0x1e0 [ 39.679210][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.679562][ T404] RIP: 0033:0x7f137ec69957 [ 39.679718][ T404] 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 [ 39.680343][ T404] RSP: 002b:00007ffe701b4068 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.680568][ T404] RAX: ffffffffffffffda RBX: 000055a51f658360 RCX: 00007f137ec69957 [ 39.680796][ T404] RDX: 0000000000000002 RSI: 000055a51f6583a0 RDI: 0000000000000005 [ 39.681102][ T404] RBP: 000055a51f65a4d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.681328][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.681552][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f137ed209c0 [ 39.681864][ T404]