[ 24.726811][ T261] ip (261) used greatest stack depth: 23168 bytes left [ 28.749155][ T298] 8021q: 802.1Q VLAN Support v1.8 [ 29.852743][ T309] gre: GRE over IPv4 demultiplexor driver [ 29.876912][ T309] ip_gre: GRE over IPv4 tunneling driver [ 36.705273][ T375] GACT probability NOT on [ 38.453509][ T391] [ 38.453618][ T391] ===================================================== [ 38.453792][ T391] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 38.453999][ T391] 6.9.0-rc1-virtme #1 Not tainted [ 38.454136][ T391] ----------------------------------------------------- [ 38.454303][ T391] sysctl/391 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 38.454512][ T391] ffff888025d8cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 38.454771][ T391] [ 38.454771][ T391] and this task is already holding: [ 38.454972][ T391] ffff888006cc2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.455226][ T391] which would create a new lock dependency: [ 38.455402][ T391] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 38.455611][ T391] [ 38.455611][ T391] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 38.455844][ T391] (&ndev->lock){++--}-{2:2} [ 38.455848][ T391] [ 38.455848][ T391] ... which became SOFTIRQ-irq-safe at: [ 38.456186][ T391] __lock_acquire+0x797/0x1570 [ 38.456332][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.456471][ T391] _raw_write_lock+0x30/0x40 [ 38.456615][ T391] addrconf_rs_timer+0xa9/0x730 [ 38.456751][ T391] call_timer_fn+0x13b/0x230 [ 38.456894][ T391] __run_timers+0x545/0x810 [ 38.457033][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.457170][ T391] __do_softirq+0x1f8/0x5df [ 38.457306][ T391] irq_exit_rcu+0x97/0xc0 [ 38.457445][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.457584][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.457761][ T391] _raw_spin_unlock_irq+0x30/0x50 [ 38.457899][ T391] p9_tag_alloc+0x351/0x700 [ 38.458043][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.458181][ T391] p9_client_rpc+0x18d/0x930 [ 38.458323][ T391] p9_client_getattr_dotl+0xb5/0x1a0 [ 38.458460][ T391] v9fs_vfs_getattr_dotl+0x11a/0x370 [ 38.458598][ T391] ovl_getattr+0x46f/0xdd0 [ 38.458736][ T391] vfs_statx+0x105/0x460 [ 38.458844][ T391] vfs_fstatat+0x93/0xc0 [ 38.458949][ T391] __do_sys_newfstatat+0x6b/0xc0 [ 38.459085][ T391] do_syscall_64+0xc6/0x1e0 [ 38.459224][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.459414][ T391] [ 38.459414][ T391] to a SOFTIRQ-irq-unsafe lock: [ 38.459583][ T391] (&p->alloc_lock){+.+.}-{2:2} [ 38.459587][ T391] [ 38.459587][ T391] ... which became SOFTIRQ-irq-unsafe at: [ 38.459922][ T391] ... [ 38.459923][ T391] __lock_acquire+0x797/0x1570 [ 38.460135][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.460271][ T391] _raw_spin_lock+0x30/0x40 [ 38.460408][ T391] set_mems_allowed+0x1d/0x210 [ 38.460547][ T391] kernel_init_freeable+0x72/0x310 [ 38.460687][ T391] kernel_init+0x20/0x200 [ 38.460830][ T391] ret_from_fork+0x31/0x70 [ 38.460972][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.461113][ T391] [ 38.461113][ T391] other info that might help us debug this: [ 38.461113][ T391] [ 38.461381][ T391] Possible interrupt unsafe locking scenario: [ 38.461381][ T391] [ 38.461584][ T391] CPU0 CPU1 [ 38.461720][ T391] ---- ---- [ 38.461856][ T391] lock(&p->alloc_lock); [ 38.461960][ T391] local_irq_disable(); [ 38.462134][ T391] lock(&ndev->lock); [ 38.462306][ T391] lock(&p->alloc_lock); [ 38.462477][ T391] [ 38.462581][ T391] lock(&ndev->lock); [ 38.462687][ T391] [ 38.462687][ T391] *** DEADLOCK *** [ 38.462687][ T391] [ 38.462890][ T391] 3 locks held by sysctl/391: [ 38.463029][ T391] #0: ffff888025c4c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 38.463280][ T391] #1: ffffffff9b7969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 38.463562][ T391] #2: ffff888006cc2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.463822][ T391] [ 38.463822][ T391] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 38.464090][ T391] -> (&ndev->lock){++--}-{2:2} { [ 38.464234][ T391] HARDIRQ-ON-W at: [ 38.464345][ T391] __lock_acquire+0x797/0x1570 [ 38.464523][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.464698][ T391] _raw_write_lock_bh+0x38/0x50 [ 38.464872][ T391] addrconf_permanent_addr+0x6e/0x670 [ 38.465046][ T391] addrconf_notify+0x749/0xd60 [ 38.465228][ T391] notifier_call_chain+0xcd/0x150 [ 38.465406][ T391] __dev_notify_flags+0xe6/0x250 [ 38.465583][ T391] dev_change_flags+0xec/0x160 [ 38.465763][ T391] do_setlink+0x7d6/0x21e0 [ 38.465937][ T391] __rtnl_newlink+0xaa7/0xd80 [ 38.466111][ T391] rtnl_newlink+0x63/0xa0 [ 38.466287][ T391] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.466461][ T391] netlink_rcv_skb+0x130/0x360 [ 38.466657][ T391] netlink_unicast+0x449/0x710 [ 38.466833][ T391] netlink_sendmsg+0x723/0xbe0 [ 38.467009][ T391] ____sys_sendmsg+0x7b2/0xa10 [ 38.467186][ T391] ___sys_sendmsg+0xee/0x170 [ 38.467360][ T391] __sys_sendmsg+0xcd/0x170 [ 38.467535][ T391] do_syscall_64+0xc6/0x1e0 [ 38.467707][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.467920][ T391] HARDIRQ-ON-R at: [ 38.468024][ T391] __lock_acquire+0x797/0x1570 [ 38.468202][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.468375][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.468548][ T391] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.468724][ T391] inet6_fill_link_af+0x5e/0xe0 [ 38.468903][ T391] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.469076][ T391] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.469255][ T391] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.469484][ T391] rtmsg_ifinfo+0x5b/0xa0 [ 38.469658][ T391] register_netdevice+0x1177/0x1690 [ 38.469831][ T391] register_netdev+0x20/0x40 [ 38.470011][ T391] sit_init_net+0x250/0x4f0 [ 38.470188][ T391] ops_init+0x9b/0x560 [ 38.470333][ T391] register_pernet_operations+0x2db/0x710 [ 38.470541][ T391] register_pernet_device+0x2a/0x60 [ 38.470714][ T391] sit_init+0x23/0xe0 [ 38.470853][ T391] do_one_initcall+0x8d/0x1e0 [ 38.471031][ T391] do_initcalls+0x1b2/0x3e0 [ 38.471209][ T391] kernel_init_freeable+0x232/0x310 [ 38.471384][ T391] kernel_init+0x20/0x200 [ 38.471558][ T391] ret_from_fork+0x31/0x70 [ 38.471733][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.471906][ T391] IN-SOFTIRQ-W at: [ 38.472011][ T391] __lock_acquire+0x797/0x1570 [ 38.472189][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.472365][ T391] _raw_write_lock+0x30/0x40 [ 38.472537][ T391] addrconf_rs_timer+0xa9/0x730 [ 38.472710][ T391] call_timer_fn+0x13b/0x230 [ 38.472884][ T391] __run_timers+0x545/0x810 [ 38.473059][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.473231][ T391] __do_softirq+0x1f8/0x5df [ 38.473408][ T391] irq_exit_rcu+0x97/0xc0 [ 38.473585][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.473793][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.474002][ T391] _raw_spin_unlock_irq+0x30/0x50 [ 38.474178][ T391] p9_tag_alloc+0x351/0x700 [ 38.474352][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.474529][ T391] p9_client_rpc+0x18d/0x930 [ 38.474704][ T391] p9_client_getattr_dotl+0xb5/0x1a0 [ 38.474879][ T391] v9fs_vfs_getattr_dotl+0x11a/0x370 [ 38.475051][ T391] ovl_getattr+0x46f/0xdd0 [ 38.475225][ T391] vfs_statx+0x105/0x460 [ 38.475399][ T391] vfs_fstatat+0x93/0xc0 [ 38.475583][ T391] __do_sys_newfstatat+0x6b/0xc0 [ 38.475781][ T391] do_syscall_64+0xc6/0x1e0 [ 38.475956][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.476165][ T391] IN-SOFTIRQ-R at: [ 38.476269][ T391] __lock_acquire+0x797/0x1570 [ 38.476443][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.476619][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.476796][ T391] ipv6_get_lladdr+0xa9/0x3e0 [ 38.476970][ T391] addrconf_rs_timer+0x24a/0x730 [ 38.477146][ T391] call_timer_fn+0x13b/0x230 [ 38.477324][ T391] __run_timers+0x545/0x810 [ 38.477500][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.477674][ T391] __do_softirq+0x1f8/0x5df [ 38.477940][ T391] irq_exit_rcu+0x97/0xc0 [ 38.478116][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.478324][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.478613][ T391] _raw_spin_unlock_irq+0x30/0x50 [ 38.478788][ T391] p9_tag_alloc+0x351/0x700 [ 38.478960][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.479253][ T391] p9_client_rpc+0x18d/0x930 [ 38.479465][ T391] p9_client_getattr_dotl+0xb5/0x1a0 [ 38.479670][ T391] v9fs_vfs_getattr_dotl+0x11a/0x370 [ 38.479851][ T391] ovl_getattr+0x46f/0xdd0 [ 38.480027][ T391] vfs_statx+0x105/0x460 [ 38.480206][ T391] vfs_fstatat+0x93/0xc0 [ 38.480384][ T391] __do_sys_newfstatat+0x6b/0xc0 [ 38.480646][ T391] do_syscall_64+0xc6/0x1e0 [ 38.480842][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.481050][ T391] INITIAL USE at: [ 38.481156][ T391] __lock_acquire+0x797/0x1570 [ 38.481416][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.481590][ T391] _raw_write_lock_bh+0x38/0x50 [ 38.481768][ T391] addrconf_permanent_addr+0x6e/0x670 [ 38.482028][ T391] addrconf_notify+0x749/0xd60 [ 38.482205][ T391] notifier_call_chain+0xcd/0x150 [ 38.482379][ T391] __dev_notify_flags+0xe6/0x250 [ 38.482636][ T391] dev_change_flags+0xec/0x160 [ 38.482809][ T391] do_setlink+0x7d6/0x21e0 [ 38.482988][ T391] __rtnl_newlink+0xaa7/0xd80 [ 38.483163][ T391] rtnl_newlink+0x63/0xa0 [ 38.483422][ T391] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.483602][ T391] netlink_rcv_skb+0x130/0x360 [ 38.483792][ T391] netlink_unicast+0x449/0x710 [ 38.484047][ T391] netlink_sendmsg+0x723/0xbe0 [ 38.484222][ T391] ____sys_sendmsg+0x7b2/0xa10 [ 38.484403][ T391] ___sys_sendmsg+0xee/0x170 [ 38.484578][ T391] __sys_sendmsg+0xcd/0x170 [ 38.484854][ T391] do_syscall_64+0xc6/0x1e0 [ 38.485045][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.485258][ T391] INITIAL READ USE at: [ 38.485446][ T391] __lock_acquire+0x797/0x1570 [ 38.485617][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.485793][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.485964][ T391] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.486254][ T391] inet6_fill_link_af+0x5e/0xe0 [ 38.486425][ T391] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.486595][ T391] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.486883][ T391] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.487088][ T391] rtmsg_ifinfo+0x5b/0xa0 [ 38.487263][ T391] register_netdevice+0x1177/0x1690 [ 38.487549][ T391] register_netdev+0x20/0x40 [ 38.487743][ T391] sit_init_net+0x250/0x4f0 [ 38.487927][ T391] ops_init+0x9b/0x560 [ 38.488188][ T391] register_pernet_operations+0x2db/0x710 [ 38.488393][ T391] register_pernet_device+0x2a/0x60 [ 38.488596][ T391] sit_init+0x23/0xe0 [ 38.488847][ T391] do_one_initcall+0x8d/0x1e0 [ 38.489019][ T391] do_initcalls+0x1b2/0x3e0 [ 38.489191][ T391] kernel_init_freeable+0x232/0x310 [ 38.489497][ T391] kernel_init+0x20/0x200 [ 38.489668][ T391] ret_from_fork+0x31/0x70 [ 38.489852][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.490021][ T391] } [ 38.490178][ T391] ... key at: [] __key.37+0x0/0x40 [ 38.490385][ T391] [ 38.490385][ T391] the dependencies between the lock to be acquired [ 38.490386][ T391] and SOFTIRQ-irq-unsafe lock: [ 38.490760][ T391] -> (&p->alloc_lock){+.+.}-{2:2} { [ 38.490908][ T391] HARDIRQ-ON-W at: [ 38.491013][ T391] __lock_acquire+0x797/0x1570 [ 38.491188][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.491453][ T391] _raw_spin_lock+0x30/0x40 [ 38.491651][ T391] set_mems_allowed+0x1d/0x210 [ 38.491826][ T391] kernel_init_freeable+0x72/0x310 [ 38.492013][ T391] kernel_init+0x20/0x200 [ 38.492272][ T391] ret_from_fork+0x31/0x70 [ 38.492444][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.492616][ T391] SOFTIRQ-ON-W at: [ 38.492884][ T391] __lock_acquire+0x797/0x1570 [ 38.493060][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.493234][ T391] _raw_spin_lock+0x30/0x40 [ 38.493416][ T391] set_mems_allowed+0x1d/0x210 [ 38.493675][ T391] kernel_init_freeable+0x72/0x310 [ 38.493845][ T391] kernel_init+0x20/0x200 [ 38.494017][ T391] ret_from_fork+0x31/0x70 [ 38.494283][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.494461][ T391] INITIAL USE at: [ 38.494564][ T391] __lock_acquire+0x797/0x1570 [ 38.494741][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.494916][ T391] _raw_spin_lock+0x30/0x40 [ 38.495096][ T391] set_mems_allowed+0x1d/0x210 [ 38.495271][ T391] kernel_init_freeable+0x72/0x310 [ 38.495526][ T391] kernel_init+0x20/0x200 [ 38.495718][ T391] ret_from_fork+0x31/0x70 [ 38.495903][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.496081][ T391] } [ 38.496244][ T391] ... key at: [] __key.387+0x0/0x40 [ 38.496449][ T391] ... acquired at: [ 38.496551][ T391] check_prev_add+0x194/0xce0 [ 38.496694][ T391] validate_chain+0x71d/0x9b0 [ 38.496832][ T391] __lock_acquire+0xaf0/0x1570 [ 38.496972][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.497120][ T391] _raw_spin_lock+0x30/0x40 [ 38.497256][ T391] __get_task_comm+0x27/0x70 [ 38.497397][ T391] ref_tracker_alloc+0x2ee/0x490 [ 38.497618][ T391] netdev_get_by_index+0x5e/0x80 [ 38.497754][ T391] fib6_nh_init+0x3d8/0x15b0 [ 38.497896][ T391] ip6_route_info_create+0xf18/0x17d0 [ 38.498033][ T391] addrconf_f6i_alloc+0x265/0x560 [ 38.498261][ T391] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.498404][ T391] addrconf_join_anycast+0x1c0/0x220 [ 38.498548][ T391] dev_forward_change+0x2a6/0x7b0 [ 38.498683][ T391] addrconf_fixup_forwarding+0x23f/0x460 [ 38.498856][ T391] addrconf_sysctl_forward+0x212/0x2b0 [ 38.498997][ T391] proc_sys_call_handler+0x403/0x5e0 [ 38.499134][ T391] vfs_write+0x9e5/0x10a0 [ 38.499285][ T391] ksys_write+0xf5/0x1e0 [ 38.499511][ T391] do_syscall_64+0xc6/0x1e0 [ 38.499674][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.499847][ T391] [ 38.499925][ T391] [ 38.499925][ T391] stack backtrace: [ 38.500174][ T391] CPU: 1 PID: 391 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 38.500382][ T391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.500689][ T391] Call Trace: [ 38.500797][ T391] [ 38.500871][ T391] dump_stack_lvl+0x82/0xd0 [ 38.501015][ T391] print_bad_irq_dependency+0x957/0xd40 [ 38.501151][ T391] ? hlock_class+0x4e/0x130 [ 38.501288][ T391] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 38.501537][ T391] ? __pfx_usage_skip+0x10/0x10 [ 38.501671][ T391] ? __bfs+0x246/0x650 [ 38.501773][ T391] ? __pfx_usage_match+0x10/0x10 [ 38.501911][ T391] check_irq_usage+0x596/0x850 [ 38.502135][ T391] ? __pfx_check_irq_usage+0x10/0x10 [ 38.502271][ T391] ? __bfs+0x246/0x650 [ 38.502373][ T391] ? __pfx_hlock_conflict+0x10/0x10 [ 38.502510][ T391] ? check_path.constprop.0+0x24/0x50 [ 38.502645][ T391] ? check_noncircular+0x14c/0x3e0 [ 38.502865][ T391] ? __pfx_check_noncircular+0x10/0x10 [ 38.503004][ T391] ? check_prev_add+0x194/0xce0 [ 38.503138][ T391] check_prev_add+0x194/0xce0 [ 38.503280][ T391] ? validate_chain+0x130/0x9b0 [ 38.503582][ T391] validate_chain+0x71d/0x9b0 [ 38.503740][ T391] ? mark_lock+0x38/0x3e0 [ 38.503844][ T391] ? __pfx_validate_chain+0x10/0x10 [ 38.503984][ T391] ? hlock_class+0x4e/0x130 [ 38.504207][ T391] ? mark_lock+0x38/0x3e0 [ 38.504311][ T391] __lock_acquire+0xaf0/0x1570 [ 38.504454][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.504590][ T391] ? __get_task_comm+0x27/0x70 [ 38.504729][ T391] ? mark_lock+0x38/0x3e0 [ 38.504834][ T391] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.504970][ T391] ? trace_lock_acquire+0x135/0x1c0 [ 38.505107][ T391] ? __get_task_comm+0x27/0x70 [ 38.505241][ T391] ? lock_acquire+0x32/0xc0 [ 38.505457][ T391] ? __get_task_comm+0x27/0x70 [ 38.505601][ T391] _raw_spin_lock+0x30/0x40 [ 38.505738][ T391] ? __get_task_comm+0x27/0x70 [ 38.505874][ T391] __get_task_comm+0x27/0x70 [ 38.506014][ T391] ref_tracker_alloc+0x2ee/0x490 [ 38.506231][ T391] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 38.506368][ T391] ? dev_get_by_index+0x177/0x270 [ 38.506507][ T391] ? netdev_get_by_index+0x5e/0x80 [ 38.506646][ T391] ? fib6_nh_init+0x3d8/0x15b0 [ 38.506865][ T391] ? ip6_route_info_create+0xf18/0x17d0 [ 38.507006][ T391] ? addrconf_f6i_alloc+0x265/0x560 [ 38.507142][ T391] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.507282][ T391] ? addrconf_join_anycast+0x1c0/0x220 [ 38.507505][ T391] ? dev_forward_change+0x2a6/0x7b0 [ 38.507666][ T391] ? addrconf_fixup_forwarding+0x23f/0x460 [ 38.507839][ T391] ? addrconf_sysctl_forward+0x212/0x2b0 [ 38.507980][ T391] ? proc_sys_call_handler+0x403/0x5e0 [ 38.508209][ T391] ? vfs_write+0x9e5/0x10a0 [ 38.508349][ T391] ? ksys_write+0xf5/0x1e0 [ 38.508488][ T391] ? do_syscall_64+0xc6/0x1e0 [ 38.508627][ T391] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.508805][ T391] ? dev_get_by_index+0x177/0x270 [ 38.508941][ T391] netdev_get_by_index+0x5e/0x80 [ 38.509082][ T391] fib6_nh_init+0x3d8/0x15b0 [ 38.509218][ T391] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 38.509536][ T391] ? __pfx_fib6_nh_init+0x10/0x10 [ 38.509671][ T391] ? kasan_save_track+0x14/0x30 [ 38.509819][ T391] ? __kasan_kmalloc+0x7f/0x90 [ 38.509955][ T391] ? __kmalloc+0x1d7/0x3c0 [ 38.510181][ T391] ? fib6_get_table+0x116/0x290 [ 38.510323][ T391] ip6_route_info_create+0xf18/0x17d0 [ 38.510457][ T391] ? __lock_release+0x103/0x460 [ 38.510599][ T391] ? __pfx_ip6_route_info_create+0x10/0x10 [ 38.510775][ T391] ? addrconf_f6i_alloc+0x12d/0x560 [ 38.510911][ T391] addrconf_f6i_alloc+0x265/0x560 [ 38.511055][ T391] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 38.511200][ T391] ? do_raw_write_lock+0x122/0x3b0 [ 38.511345][ T391] ? __pfx_do_raw_write_lock+0x10/0x10 [ 38.511565][ T391] ? lock_acquire+0x32/0xc0 [ 38.511730][ T391] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.511868][ T391] addrconf_join_anycast+0x1c0/0x220 [ 38.512003][ T391] ? mark_lock+0x38/0x3e0 [ 38.512188][ T391] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 38.512363][ T391] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 38.512540][ T391] dev_forward_change+0x2a6/0x7b0 [ 38.512685][ T391] ? __pfx_dev_forward_change+0x10/0x10 [ 38.512824][ T391] addrconf_fixup_forwarding+0x23f/0x460 [ 38.512966][ T391] addrconf_sysctl_forward+0x212/0x2b0 [ 38.513107][ T391] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.513278][ T391] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.513533][ T391] ? trace_kmalloc+0x2a/0xe0 [ 38.513671][ T391] ? __kmalloc_node+0x220/0x400 [ 38.513810][ T391] ? proc_sys_call_handler+0x30b/0x5e0 [ 38.513949][ T391] proc_sys_call_handler+0x403/0x5e0 [ 38.514259][ T391] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 38.514428][ T391] ? __lock_acquire+0xaf0/0x1570 [ 38.514573][ T391] vfs_write+0x9e5/0x10a0 [ 38.514678][ T391] ? do_user_addr_fault+0x449/0xbe0 [ 38.514825][ T391] ? __pfx_vfs_write+0x10/0x10 [ 38.514962][ T391] ? find_held_lock+0x2c/0x110 [ 38.515102][ T391] ? __pfx___lock_release+0x10/0x10 [ 38.515245][ T391] ? __fget_light+0x53/0x1e0 [ 38.515464][ T391] ksys_write+0xf5/0x1e0 [ 38.515582][ T391] ? __pfx_ksys_write+0x10/0x10 [ 38.515741][ T391] ? do_user_addr_fault+0x4bd/0xbe0 [ 38.515878][ T391] do_syscall_64+0xc6/0x1e0 [ 38.516020][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.516288][ T391] RIP: 0033:0x7f20c1ace957 [ 38.516431][ T391] 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 [ 38.516928][ T391] RSP: 002b:00007fff4ba21848 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 38.517140][ T391] RAX: ffffffffffffffda RBX: 000055d51dc5c360 RCX: 00007f20c1ace957 [ 38.517348][ T391] RDX: 0000000000000002 RSI: 000055d51dc5c3a0 RDI: 0000000000000005 [ 38.517636][ T391] RBP: 000055d51dc5e4d0 R08: 0000000000000003 R09: 0000000000000077 [ 38.517840][ T391] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 38.518124][ T391] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f20c1b859c0 [ 38.518331][ T391]