[ 23.878610][ T237] ip (237) used greatest stack depth: 23200 bytes left [ 30.135342][ T312] gre: GRE over IPv4 demultiplexor driver [ 30.194602][ T312] ip6_gre: GRE over IPv6 tunneling driver [ 32.291713][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 36.437312][ T371] GACT probability NOT on [ 39.925944][ T404] [ 39.926048][ T404] ===================================================== [ 39.926231][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.926435][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 39.926574][ T404] ----------------------------------------------------- [ 39.926757][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.926971][ T404] ffff888005a72c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.927226][ T404] [ 39.927226][ T404] and this task is already holding: [ 39.927426][ T404] ffff88800544a580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.927672][ T404] which would create a new lock dependency: [ 39.927844][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.928065][ T404] [ 39.928065][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.928302][ T404] (&ndev->lock){++--}-{2:2} [ 39.928306][ T404] [ 39.928306][ T404] ... which became SOFTIRQ-irq-safe at: [ 39.928644][ T404] __lock_acquire+0x797/0x1570 [ 39.928795][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.928932][ T404] _raw_write_lock+0x30/0x40 [ 39.929077][ T404] addrconf_rs_timer+0xa9/0x730 [ 39.929218][ T404] call_timer_fn+0x13b/0x230 [ 39.929360][ T404] __run_timers+0x545/0x810 [ 39.929497][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.929639][ T404] __do_softirq+0x1f8/0x5df [ 39.929780][ T404] irq_exit_rcu+0x97/0xc0 [ 39.929917][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.930059][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.930233][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.930375][ T404] delete_object_full+0x4b/0x70 [ 39.930516][ T404] kfree+0x142/0x230 [ 39.930625][ T404] p9_req_put+0x1c6/0x210 [ 39.930766][ T404] p9_client_walk+0x2b4/0x650 [ 39.930908][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 39.931048][ T404] __lookup_slow+0x209/0x3c0 [ 39.931185][ T404] walk_component+0x2ab/0x4f0 [ 39.931323][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 39.931498][ T404] path_lookupat+0x72/0x660 [ 39.931638][ T404] filename_lookup+0x19e/0x420 [ 39.931776][ T404] vfs_statx+0xe8/0x460 [ 39.931883][ T404] vfs_fstatat+0x93/0xc0 [ 39.931989][ T404] __do_sys_newfstatat+0x6b/0xc0 [ 39.932128][ T404] do_syscall_64+0xc6/0x1e0 [ 39.932265][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.932435][ T404] [ 39.932435][ T404] to a SOFTIRQ-irq-unsafe lock: [ 39.932607][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 39.932614][ T404] [ 39.932614][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 39.932958][ T404] ... [ 39.932960][ T404] __lock_acquire+0x797/0x1570 [ 39.933169][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.933306][ T404] _raw_spin_lock+0x30/0x40 [ 39.933444][ T404] set_mems_allowed+0x1d/0x210 [ 39.933589][ T404] kernel_init_freeable+0x72/0x310 [ 39.933730][ T404] kernel_init+0x20/0x200 [ 39.933895][ T404] ret_from_fork+0x31/0x70 [ 39.934035][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.934171][ T404] [ 39.934171][ T404] other info that might help us debug this: [ 39.934171][ T404] [ 39.934440][ T404] Possible interrupt unsafe locking scenario: [ 39.934440][ T404] [ 39.934642][ T404] CPU0 CPU1 [ 39.934781][ T404] ---- ---- [ 39.934919][ T404] lock(&p->alloc_lock); [ 39.935034][ T404] local_irq_disable(); [ 39.935202][ T404] lock(&ndev->lock); [ 39.935376][ T404] lock(&p->alloc_lock); [ 39.935549][ T404] [ 39.935655][ T404] lock(&ndev->lock); [ 39.935760][ T404] [ 39.935760][ T404] *** DEADLOCK *** [ 39.935760][ T404] [ 39.935971][ T404] 3 locks held by sysctl/404: [ 39.936113][ T404] #0: ffff8880060293f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.936366][ T404] #1: ffffffff913969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.936653][ T404] #2: ffff88800544a580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.936898][ T404] [ 39.936898][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.937168][ T404] -> (&ndev->lock){++--}-{2:2} { [ 39.937313][ T404] HARDIRQ-ON-W at: [ 39.937421][ T404] __lock_acquire+0x797/0x1570 [ 39.937598][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.937770][ T404] _raw_write_lock_bh+0x38/0x50 [ 39.937946][ T404] addrconf_permanent_addr+0x6e/0x670 [ 39.938119][ T404] addrconf_notify+0x749/0xd60 [ 39.938296][ T404] notifier_call_chain+0xcd/0x150 [ 39.938470][ T404] __dev_notify_flags+0xe6/0x250 [ 39.938645][ T404] dev_change_flags+0xec/0x160 [ 39.938821][ T404] do_setlink+0x7d6/0x21e0 [ 39.938996][ T404] __rtnl_newlink+0xaa7/0xd80 [ 39.939173][ T404] rtnl_newlink+0x63/0xa0 [ 39.939352][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.939527][ T404] netlink_rcv_skb+0x130/0x360 [ 39.939705][ T404] netlink_unicast+0x449/0x710 [ 39.939880][ T404] netlink_sendmsg+0x723/0xbe0 [ 39.940052][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 39.940227][ T404] ___sys_sendmsg+0xee/0x170 [ 39.940403][ T404] __sys_sendmsg+0xcd/0x170 [ 39.940581][ T404] do_syscall_64+0xc6/0x1e0 [ 39.940757][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.940968][ T404] HARDIRQ-ON-R at: [ 39.941072][ T404] __lock_acquire+0x797/0x1570 [ 39.941246][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.941421][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.941601][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.941780][ T404] inet6_fill_link_af+0x5e/0xe0 [ 39.941951][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.942127][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.942309][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.942530][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 39.942710][ T404] register_netdevice+0x1177/0x1690 [ 39.942886][ T404] register_netdev+0x20/0x40 [ 39.943059][ T404] sit_init_net+0x250/0x4f0 [ 39.943235][ T404] ops_init+0x9b/0x560 [ 39.943377][ T404] register_pernet_operations+0x2db/0x710 [ 39.943585][ T404] register_pernet_device+0x2a/0x60 [ 39.943759][ T404] sit_init+0x23/0xe0 [ 39.943915][ T404] do_one_initcall+0x8d/0x1e0 [ 39.944101][ T404] do_initcalls+0x1b2/0x3e0 [ 39.944278][ T404] kernel_init_freeable+0x232/0x310 [ 39.944453][ T404] kernel_init+0x20/0x200 [ 39.944631][ T404] ret_from_fork+0x31/0x70 [ 39.944806][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.944982][ T404] IN-SOFTIRQ-W at: [ 39.945090][ T404] __lock_acquire+0x797/0x1570 [ 39.945267][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.945442][ T404] _raw_write_lock+0x30/0x40 [ 39.945626][ T404] addrconf_rs_timer+0xa9/0x730 [ 39.945802][ T404] call_timer_fn+0x13b/0x230 [ 39.945977][ T404] __run_timers+0x545/0x810 [ 39.946154][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.946329][ T404] __do_softirq+0x1f8/0x5df [ 39.946503][ T404] irq_exit_rcu+0x97/0xc0 [ 39.946678][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.946887][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.947102][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.947315][ T404] delete_object_full+0x4b/0x70 [ 39.947491][ T404] kfree+0x142/0x230 [ 39.947722][ T404] p9_req_put+0x1c6/0x210 [ 39.947897][ T404] p9_client_walk+0x2b4/0x650 [ 39.948070][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 39.948327][ T404] __lookup_slow+0x209/0x3c0 [ 39.948502][ T404] walk_component+0x2ab/0x4f0 [ 39.948680][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 39.948887][ T404] path_lookupat+0x72/0x660 [ 39.949149][ T404] filename_lookup+0x19e/0x420 [ 39.949320][ T404] vfs_statx+0xe8/0x460 [ 39.949495][ T404] vfs_fstatat+0x93/0xc0 [ 39.949750][ T404] __do_sys_newfstatat+0x6b/0xc0 [ 39.949925][ T404] do_syscall_64+0xc6/0x1e0 [ 39.950101][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.950391][ T404] IN-SOFTIRQ-R at: [ 39.950496][ T404] __lock_acquire+0x797/0x1570 [ 39.950672][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.950845][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.951112][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 39.951292][ T404] addrconf_rs_timer+0x24a/0x730 [ 39.951464][ T404] call_timer_fn+0x13b/0x230 [ 39.951638][ T404] __run_timers+0x545/0x810 [ 39.951811][ T404] run_timer_softirq+0xe8/0x1b0 [ 39.951985][ T404] __do_softirq+0x1f8/0x5df [ 39.952161][ T404] irq_exit_rcu+0x97/0xc0 [ 39.952421][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.952629][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.952839][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 39.953144][ T404] delete_object_full+0x4b/0x70 [ 39.953321][ T404] kfree+0x142/0x230 [ 39.953461][ T404] p9_req_put+0x1c6/0x210 [ 39.953640][ T404] p9_client_walk+0x2b4/0x650 [ 39.953815][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 39.954004][ T404] __lookup_slow+0x209/0x3c0 [ 39.954178][ T404] walk_component+0x2ab/0x4f0 [ 39.954433][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 39.954642][ T404] path_lookupat+0x72/0x660 [ 39.954820][ T404] filename_lookup+0x19e/0x420 [ 39.955082][ T404] vfs_statx+0xe8/0x460 [ 39.955258][ T404] vfs_fstatat+0x93/0xc0 [ 39.955434][ T404] __do_sys_newfstatat+0x6b/0xc0 [ 39.955609][ T404] do_syscall_64+0xc6/0x1e0 [ 39.955780][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.955988][ T404] INITIAL USE at: [ 39.956098][ T404] __lock_acquire+0x797/0x1570 [ 39.956356][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.956531][ T404] _raw_write_lock_bh+0x38/0x50 [ 39.956707][ T404] addrconf_permanent_addr+0x6e/0x670 [ 39.956963][ T404] addrconf_notify+0x749/0xd60 [ 39.957136][ T404] notifier_call_chain+0xcd/0x150 [ 39.957315][ T404] __dev_notify_flags+0xe6/0x250 [ 39.957490][ T404] dev_change_flags+0xec/0x160 [ 39.957771][ T404] do_setlink+0x7d6/0x21e0 [ 39.957944][ T404] __rtnl_newlink+0xaa7/0xd80 [ 39.958120][ T404] rtnl_newlink+0x63/0xa0 [ 39.958380][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.958554][ T404] netlink_rcv_skb+0x130/0x360 [ 39.958730][ T404] netlink_unicast+0x449/0x710 [ 39.958991][ T404] netlink_sendmsg+0x723/0xbe0 [ 39.959163][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 39.959338][ T404] ___sys_sendmsg+0xee/0x170 [ 39.959510][ T404] __sys_sendmsg+0xcd/0x170 [ 39.959689][ T404] do_syscall_64+0xc6/0x1e0 [ 39.959861][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.960072][ T404] INITIAL READ USE at: [ 39.960346][ T404] __lock_acquire+0x797/0x1570 [ 39.960522][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.960697][ T404] _raw_read_lock_bh+0x44/0x80 [ 39.960878][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.961179][ T404] inet6_fill_link_af+0x5e/0xe0 [ 39.961359][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.961536][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.961746][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.961956][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 39.962129][ T404] register_netdevice+0x1177/0x1690 [ 39.962420][ T404] register_netdev+0x20/0x40 [ 39.962597][ T404] sit_init_net+0x250/0x4f0 [ 39.962773][ T404] ops_init+0x9b/0x560 [ 39.963041][ T404] register_pernet_operations+0x2db/0x710 [ 39.963249][ T404] register_pernet_device+0x2a/0x60 [ 39.963455][ T404] sit_init+0x23/0xe0 [ 39.963629][ T404] do_one_initcall+0x8d/0x1e0 [ 39.963808][ T404] do_initcalls+0x1b2/0x3e0 [ 39.964002][ T404] kernel_init_freeable+0x232/0x310 [ 39.964294][ T404] kernel_init+0x20/0x200 [ 39.964469][ T404] ret_from_fork+0x31/0x70 [ 39.964644][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.964820][ T404] } [ 39.964981][ T404] ... key at: [] __key.37+0x0/0x40 [ 39.965193][ T404] [ 39.965193][ T404] the dependencies between the lock to be acquired [ 39.965194][ T404] and SOFTIRQ-irq-unsafe lock: [ 39.965563][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.965709][ T404] HARDIRQ-ON-W at: [ 39.965814][ T404] __lock_acquire+0x797/0x1570 [ 39.965990][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.966252][ T404] _raw_spin_lock+0x30/0x40 [ 39.966446][ T404] set_mems_allowed+0x1d/0x210 [ 39.966629][ T404] kernel_init_freeable+0x72/0x310 [ 39.966803][ T404] kernel_init+0x20/0x200 [ 39.967062][ T404] ret_from_fork+0x31/0x70 [ 39.967243][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.967418][ T404] SOFTIRQ-ON-W at: [ 39.967523][ T404] __lock_acquire+0x797/0x1570 [ 39.967699][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.967874][ T404] _raw_spin_lock+0x30/0x40 [ 39.968048][ T404] set_mems_allowed+0x1d/0x210 [ 39.968305][ T404] kernel_init_freeable+0x72/0x310 [ 39.968477][ T404] kernel_init+0x20/0x200 [ 39.968656][ T404] ret_from_fork+0x31/0x70 [ 39.968914][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.969089][ T404] INITIAL USE at: [ 39.969198][ T404] __lock_acquire+0x797/0x1570 [ 39.969373][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.969628][ T404] _raw_spin_lock+0x30/0x40 [ 39.969803][ T404] set_mems_allowed+0x1d/0x210 [ 39.969977][ T404] kernel_init_freeable+0x72/0x310 [ 39.970151][ T404] kernel_init+0x20/0x200 [ 39.970407][ T404] ret_from_fork+0x31/0x70 [ 39.970581][ T404] ret_from_fork_asm+0x1a/0x30 [ 39.970753][ T404] } [ 39.970839][ T404] ... key at: [] __key.387+0x0/0x40 [ 39.971228][ T404] ... acquired at: [ 39.971336][ T404] check_prev_add+0x194/0xce0 [ 39.971476][ T404] validate_chain+0x71d/0x9b0 [ 39.971615][ T404] __lock_acquire+0xaf0/0x1570 [ 39.971754][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.971897][ T404] _raw_spin_lock+0x30/0x40 [ 39.972035][ T404] __get_task_comm+0x27/0x70 [ 39.972180][ T404] ref_tracker_alloc+0x2ee/0x490 [ 39.972404][ T404] netdev_get_by_index+0x5e/0x80 [ 39.972544][ T404] fib6_nh_init+0x3d8/0x15b0 [ 39.972686][ T404] ip6_route_info_create+0xf18/0x17d0 [ 39.972825][ T404] addrconf_f6i_alloc+0x265/0x560 [ 39.973060][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.973200][ T404] addrconf_join_anycast+0x1c0/0x220 [ 39.973342][ T404] dev_forward_change+0x2a6/0x7b0 [ 39.973480][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 39.973650][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 39.973792][ T404] proc_sys_call_handler+0x403/0x5e0 [ 39.973945][ T404] vfs_write+0x9e5/0x10a0 [ 39.974084][ T404] ksys_write+0xf5/0x1e0 [ 39.974301][ T404] do_syscall_64+0xc6/0x1e0 [ 39.974441][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.974615][ T404] [ 39.974686][ T404] [ 39.974686][ T404] stack backtrace: [ 39.974860][ T404] CPU: 3 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.975158][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.975464][ T404] Call Trace: [ 39.975575][ T404] [ 39.975656][ T404] dump_stack_lvl+0x82/0xd0 [ 39.975800][ T404] print_bad_irq_dependency+0x957/0xd40 [ 39.975946][ T404] ? hlock_class+0x4e/0x130 [ 39.976087][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.976344][ T404] ? __pfx_usage_skip+0x10/0x10 [ 39.976482][ T404] ? __bfs+0x246/0x650 [ 39.976588][ T404] ? __pfx_usage_match+0x10/0x10 [ 39.976725][ T404] check_irq_usage+0x596/0x850 [ 39.976948][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 39.977087][ T404] ? __bfs+0x246/0x650 [ 39.977191][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 39.977330][ T404] ? check_path.constprop.0+0x24/0x50 [ 39.977475][ T404] ? check_noncircular+0x14c/0x3e0 [ 39.977615][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 39.977753][ T404] ? mark_lock+0x38/0x3e0 [ 39.977863][ T404] ? check_prev_add+0x194/0xce0 [ 39.978000][ T404] check_prev_add+0x194/0xce0 [ 39.978220][ T404] ? validate_chain+0x130/0x9b0 [ 39.978358][ T404] validate_chain+0x71d/0x9b0 [ 39.978497][ T404] ? mark_lock+0x38/0x3e0 [ 39.978602][ T404] ? __pfx_validate_chain+0x10/0x10 [ 39.978741][ T404] ? hlock_class+0x4e/0x130 [ 39.978958][ T404] ? mark_lock+0x38/0x3e0 [ 39.979068][ T404] __lock_acquire+0xaf0/0x1570 [ 39.979210][ T404] lock_acquire.part.0+0xeb/0x330 [ 39.979349][ T404] ? __get_task_comm+0x27/0x70 [ 39.979578][ T404] ? mark_lock+0x38/0x3e0 [ 39.979684][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.979828][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 39.979974][ T404] ? __get_task_comm+0x27/0x70 [ 39.980121][ T404] ? lock_acquire+0x32/0xc0 [ 39.980344][ T404] ? __get_task_comm+0x27/0x70 [ 39.980483][ T404] _raw_spin_lock+0x30/0x40 [ 39.980622][ T404] ? __get_task_comm+0x27/0x70 [ 39.980761][ T404] __get_task_comm+0x27/0x70 [ 39.980985][ T404] ref_tracker_alloc+0x2ee/0x490 [ 39.981133][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.981271][ T404] ? dev_get_by_index+0x177/0x270 [ 39.981416][ T404] ? netdev_get_by_index+0x5e/0x80 [ 39.981636][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 39.981776][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 39.981918][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 39.982068][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.982209][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 39.982427][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 39.982565][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.982739][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.982876][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 39.983110][ T404] ? vfs_write+0x9e5/0x10a0 [ 39.983247][ T404] ? ksys_write+0xf5/0x1e0 [ 39.983387][ T404] ? do_syscall_64+0xc6/0x1e0 [ 39.983525][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.983702][ T404] ? dev_get_by_index+0x177/0x270 [ 39.983841][ T404] netdev_get_by_index+0x5e/0x80 [ 39.984025][ T404] fib6_nh_init+0x3d8/0x15b0 [ 39.984168][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.984425][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.984564][ T404] ? kasan_save_track+0x14/0x30 [ 39.984707][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 39.984846][ T404] ? __kmalloc+0x1d7/0x3c0 [ 39.985077][ T404] ? fib6_get_table+0x116/0x290 [ 39.985216][ T404] ip6_route_info_create+0xf18/0x17d0 [ 39.985357][ T404] ? __lock_release+0x103/0x460 [ 39.985498][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.985670][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.985809][ T404] addrconf_f6i_alloc+0x265/0x560 [ 39.985948][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.986090][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 39.986312][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.986448][ T404] ? lock_acquire+0x32/0xc0 [ 39.986590][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.986732][ T404] addrconf_join_anycast+0x1c0/0x220 [ 39.986954][ T404] ? mark_lock+0x38/0x3e0 [ 39.987062][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.987236][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.987409][ T404] dev_forward_change+0x2a6/0x7b0 [ 39.987551][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 39.987694][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 39.987836][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 39.987977][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.988234][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.988413][ T404] ? trace_kmalloc+0x2a/0xe0 [ 39.988552][ T404] ? __kmalloc_node+0x220/0x400 [ 39.988691][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.988914][ T404] proc_sys_call_handler+0x403/0x5e0 [ 39.989060][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.989233][ T404] ? __lock_acquire+0xaf0/0x1570 [ 39.989374][ T404] vfs_write+0x9e5/0x10a0 [ 39.989480][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 39.989704][ T404] ? __pfx_vfs_write+0x10/0x10 [ 39.989843][ T404] ? find_held_lock+0x2c/0x110 [ 39.989988][ T404] ? __pfx___lock_release+0x10/0x10 [ 39.990130][ T404] ? __fget_light+0x53/0x1e0 [ 39.990275][ T404] ksys_write+0xf5/0x1e0 [ 39.990380][ T404] ? __pfx_ksys_write+0x10/0x10 [ 39.990519][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.990658][ T404] do_syscall_64+0xc6/0x1e0 [ 39.990799][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.990975][ T404] RIP: 0033:0x7fd27a7b0957 [ 39.991126][ 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 [ 39.991626][ T404] RSP: 002b:00007ffd9ae6d6e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.991846][ T404] RAX: ffffffffffffffda RBX: 000055a33dcfa360 RCX: 00007fd27a7b0957 [ 39.992056][ T404] RDX: 0000000000000002 RSI: 000055a33dcfa3a0 RDI: 0000000000000005 [ 39.992266][ T404] RBP: 000055a33dcfc4d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.992478][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.992687][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fd27a8679c0 [ 39.992907][ T404]