[ 28.854556][ T258] ip (258) used greatest stack depth: 23632 bytes left [ 34.938533][ T312] gre: GRE over IPv4 demultiplexor driver [ 34.958694][ T312] ip_gre: GRE over IPv4 tunneling driver [ 37.498950][ T335] 8021q: 802.1Q VLAN Support v1.8 [ 41.986354][ T373] GACT probability NOT on [ 43.756271][ C1] hrtimer: interrupt took 2818718 ns [ 46.597335][ T411] [ 46.597457][ T411] ===================================================== [ 46.597658][ T411] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 46.597901][ T411] 6.9.0-rc1-virtme #1 Not tainted [ 46.598050][ T411] ----------------------------------------------------- [ 46.598229][ T411] sysctl/411 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 46.598473][ T411] ffff888005748968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 46.598767][ T411] [ 46.598767][ T411] and this task is already holding: [ 46.598976][ T411] ffff888005c05580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 46.599232][ T411] which would create a new lock dependency: [ 46.599403][ T411] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 46.599616][ T411] [ 46.599616][ T411] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 46.599871][ T411] (&ndev->lock){++--}-{2:2} [ 46.599875][ T411] [ 46.599875][ T411] ... which became SOFTIRQ-irq-safe at: [ 46.600221][ T411] __lock_acquire+0x797/0x1570 [ 46.600369][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.600507][ T411] _raw_write_lock+0x30/0x40 [ 46.600658][ T411] addrconf_rs_timer+0xa9/0x730 [ 46.600798][ T411] call_timer_fn+0x13b/0x230 [ 46.600944][ T411] __run_timers+0x545/0x810 [ 46.601084][ T411] run_timer_softirq+0xe8/0x1b0 [ 46.601220][ T411] __do_softirq+0x1f8/0x5df [ 46.601355][ T411] irq_exit_rcu+0x97/0xc0 [ 46.601494][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.601635][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.601905][ T411] override_creds+0x4f/0xa0 [ 46.602048][ T411] ovl_permission+0x107/0x200 [ 46.602193][ T411] inode_permission+0x2dc/0x480 [ 46.602342][ T411] link_path_walk.part.0.constprop.0+0x253/0x9f0 [ 46.602515][ T411] path_lookupat+0x72/0x660 [ 46.602652][ T411] filename_lookup+0x19e/0x420 [ 46.602791][ T411] vfs_statx+0xe8/0x460 [ 46.602899][ T411] vfs_fstatat+0x93/0xc0 [ 46.603004][ T411] __do_sys_newfstatat+0x6b/0xc0 [ 46.603144][ T411] do_syscall_64+0xc6/0x1e0 [ 46.603285][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.603466][ T411] [ 46.603466][ T411] to a SOFTIRQ-irq-unsafe lock: [ 46.603642][ T411] (&p->alloc_lock){+.+.}-{2:2} [ 46.603646][ T411] [ 46.603646][ T411] ... which became SOFTIRQ-irq-unsafe at: [ 46.603990][ T411] ... [ 46.603991][ T411] __lock_acquire+0x797/0x1570 [ 46.604217][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.604357][ T411] _raw_spin_lock+0x30/0x40 [ 46.604496][ T411] set_mems_allowed+0x1d/0x210 [ 46.604646][ T411] kernel_init_freeable+0x72/0x310 [ 46.604792][ T411] kernel_init+0x20/0x200 [ 46.604932][ T411] ret_from_fork+0x31/0x70 [ 46.605075][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.605215][ T411] [ 46.605215][ T411] other info that might help us debug this: [ 46.605215][ T411] [ 46.605485][ T411] Possible interrupt unsafe locking scenario: [ 46.605485][ T411] [ 46.605694][ T411] CPU0 CPU1 [ 46.605837][ T411] ---- ---- [ 46.605982][ T411] lock(&p->alloc_lock); [ 46.606090][ T411] local_irq_disable(); [ 46.606259][ T411] lock(&ndev->lock); [ 46.606432][ T411] lock(&p->alloc_lock); [ 46.606609][ T411] [ 46.606715][ T411] lock(&ndev->lock); [ 46.606830][ T411] [ 46.606830][ T411] *** DEADLOCK *** [ 46.606830][ T411] [ 46.607033][ T411] 3 locks held by sysctl/411: [ 46.607176][ T411] #0: ffff888005e7c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 46.607431][ T411] #1: ffffffff855969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 46.607718][ T411] #2: ffff888005c05580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 46.607979][ T411] [ 46.607979][ T411] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 46.608261][ T411] -> (&ndev->lock){++--}-{2:2} { [ 46.608410][ T411] HARDIRQ-ON-W at: [ 46.608521][ T411] __lock_acquire+0x797/0x1570 [ 46.608701][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.608877][ T411] _raw_write_lock_bh+0x38/0x50 [ 46.609063][ T411] addrconf_permanent_addr+0x6e/0x670 [ 46.609238][ T411] addrconf_notify+0x749/0xd60 [ 46.609412][ T411] notifier_call_chain+0xcd/0x150 [ 46.609589][ T411] __dev_notify_flags+0xe6/0x250 [ 46.609767][ T411] dev_change_flags+0xec/0x160 [ 46.609942][ T411] do_setlink+0x7d6/0x21e0 [ 46.610136][ T411] __rtnl_newlink+0xaa7/0xd80 [ 46.610320][ T411] rtnl_newlink+0x63/0xa0 [ 46.610503][ T411] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.610706][ T411] netlink_rcv_skb+0x130/0x360 [ 46.610988][ T411] netlink_unicast+0x449/0x710 [ 46.611164][ T411] netlink_sendmsg+0x723/0xbe0 [ 46.611346][ T411] ____sys_sendmsg+0x7b2/0xa10 [ 46.611528][ T411] ___sys_sendmsg+0xee/0x170 [ 46.611709][ T411] __sys_sendmsg+0xcd/0x170 [ 46.611914][ T411] do_syscall_64+0xc6/0x1e0 [ 46.612091][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.612388][ T411] HARDIRQ-ON-R at: [ 46.612496][ T411] __lock_acquire+0x797/0x1570 [ 46.612675][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.612973][ T411] _raw_read_lock_bh+0x44/0x80 [ 46.613151][ T411] inet6_fill_ifla6_attrs+0x516/0x740 [ 46.613377][ T411] inet6_fill_link_af+0x5e/0xe0 [ 46.613578][ T411] rtnl_fill_ifinfo+0x1612/0x29e0 [ 46.613768][ T411] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 46.613946][ T411] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 46.614186][ T411] rtmsg_ifinfo+0x5b/0xa0 [ 46.614472][ T411] register_netdevice+0x1177/0x1690 [ 46.614655][ T411] register_netdev+0x20/0x40 [ 46.614832][ T411] sit_init_net+0x250/0x4f0 [ 46.615094][ T411] ops_init+0x9b/0x560 [ 46.615242][ T411] register_pernet_operations+0x2db/0x710 [ 46.615468][ T411] register_pernet_device+0x2a/0x60 [ 46.615642][ T411] sit_init+0x23/0xe0 [ 46.615877][ T411] do_one_initcall+0x8d/0x1e0 [ 46.616053][ T411] do_initcalls+0x1b2/0x3e0 [ 46.616247][ T411] kernel_init_freeable+0x232/0x310 [ 46.616509][ T411] kernel_init+0x20/0x200 [ 46.616685][ T411] ret_from_fork+0x31/0x70 [ 46.616880][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.617063][ T411] IN-SOFTIRQ-W at: [ 46.617256][ T411] __lock_acquire+0x797/0x1570 [ 46.617437][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.617612][ T411] _raw_write_lock+0x30/0x40 [ 46.617791][ T411] addrconf_rs_timer+0xa9/0x730 [ 46.618075][ T411] call_timer_fn+0x13b/0x230 [ 46.618256][ T411] __run_timers+0x545/0x810 [ 46.618431][ T411] run_timer_softirq+0xe8/0x1b0 [ 46.618611][ T411] __do_softirq+0x1f8/0x5df [ 46.618786][ T411] irq_exit_rcu+0x97/0xc0 [ 46.618963][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.619187][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.619405][ T411] override_creds+0x4f/0xa0 [ 46.619600][ T411] ovl_permission+0x107/0x200 [ 46.619954][ T411] inode_permission+0x2dc/0x480 [ 46.620136][ T411] link_path_walk.part.0.constprop.0+0x253/0x9f0 [ 46.620363][ T411] path_lookupat+0x72/0x660 [ 46.620542][ T411] filename_lookup+0x19e/0x420 [ 46.620734][ T411] vfs_statx+0xe8/0x460 [ 46.620915][ T411] vfs_fstatat+0x93/0xc0 [ 46.621108][ T411] __do_sys_newfstatat+0x6b/0xc0 [ 46.621374][ T411] do_syscall_64+0xc6/0x1e0 [ 46.621564][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.621776][ T411] IN-SOFTIRQ-R at: [ 46.621907][ T411] __lock_acquire+0x797/0x1570 [ 46.622190][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.622377][ T411] _raw_read_lock_bh+0x44/0x80 [ 46.622566][ T411] ipv6_get_lladdr+0xa9/0x3e0 [ 46.622831][ T411] addrconf_rs_timer+0x24a/0x730 [ 46.623013][ T411] call_timer_fn+0x13b/0x230 [ 46.623203][ T411] __run_timers+0x545/0x810 [ 46.623477][ T411] run_timer_softirq+0xe8/0x1b0 [ 46.623657][ T411] __do_softirq+0x1f8/0x5df [ 46.623841][ T411] irq_exit_rcu+0x97/0xc0 [ 46.624020][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 46.624338][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 46.624582][ T411] override_creds+0x4f/0xa0 [ 46.624767][ T411] ovl_permission+0x107/0x200 [ 46.625086][ T411] inode_permission+0x2dc/0x480 [ 46.625262][ T411] link_path_walk.part.0.constprop.0+0x253/0x9f0 [ 46.625481][ T411] path_lookupat+0x72/0x660 [ 46.625684][ T411] filename_lookup+0x19e/0x420 [ 46.625866][ T411] vfs_statx+0xe8/0x460 [ 46.626042][ T411] vfs_fstatat+0x93/0xc0 [ 46.626227][ T411] __do_sys_newfstatat+0x6b/0xc0 [ 46.626409][ T411] do_syscall_64+0xc6/0x1e0 [ 46.626587][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.626797][ T411] INITIAL USE at: [ 46.626991][ T411] __lock_acquire+0x797/0x1570 [ 46.627170][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.627360][ T411] _raw_write_lock_bh+0x38/0x50 [ 46.627539][ T411] addrconf_permanent_addr+0x6e/0x670 [ 46.627715][ T411] addrconf_notify+0x749/0xd60 [ 46.627891][ T411] notifier_call_chain+0xcd/0x150 [ 46.628064][ T411] __dev_notify_flags+0xe6/0x250 [ 46.628356][ T411] dev_change_flags+0xec/0x160 [ 46.628538][ T411] do_setlink+0x7d6/0x21e0 [ 46.628714][ T411] __rtnl_newlink+0xaa7/0xd80 [ 46.628990][ T411] rtnl_newlink+0x63/0xa0 [ 46.629172][ T411] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 46.629346][ T411] netlink_rcv_skb+0x130/0x360 [ 46.629521][ T411] netlink_unicast+0x449/0x710 [ 46.629695][ T411] netlink_sendmsg+0x723/0xbe0 [ 46.629878][ T411] ____sys_sendmsg+0x7b2/0xa10 [ 46.630098][ T411] ___sys_sendmsg+0xee/0x170 [ 46.630276][ T411] __sys_sendmsg+0xcd/0x170 [ 46.630449][ T411] do_syscall_64+0xc6/0x1e0 [ 46.630623][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.631010][ T411] INITIAL READ USE at: [ 46.631116][ T411] __lock_acquire+0x797/0x1570 [ 46.631302][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.631477][ T411] _raw_read_lock_bh+0x44/0x80 [ 46.631653][ T411] inet6_fill_ifla6_attrs+0x516/0x740 [ 46.631875][ T411] inet6_fill_link_af+0x5e/0xe0 [ 46.632051][ T411] rtnl_fill_ifinfo+0x1612/0x29e0 [ 46.632325][ T411] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 46.632543][ T411] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 46.632749][ T411] rtmsg_ifinfo+0x5b/0xa0 [ 46.633009][ T411] register_netdevice+0x1177/0x1690 [ 46.633223][ T411] register_netdev+0x20/0x40 [ 46.633400][ T411] sit_init_net+0x250/0x4f0 [ 46.633668][ T411] ops_init+0x9b/0x560 [ 46.633848][ T411] register_pernet_operations+0x2db/0x710 [ 46.634067][ T411] register_pernet_device+0x2a/0x60 [ 46.634387][ T411] sit_init+0x23/0xe0 [ 46.634569][ T411] do_one_initcall+0x8d/0x1e0 [ 46.634750][ T411] do_initcalls+0x1b2/0x3e0 [ 46.634937][ T411] kernel_init_freeable+0x232/0x310 [ 46.635232][ T411] kernel_init+0x20/0x200 [ 46.635409][ T411] ret_from_fork+0x31/0x70 [ 46.635636][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.635901][ T411] } [ 46.635977][ T411] ... key at: [] __key.37+0x0/0x40 [ 46.636198][ T411] [ 46.636198][ T411] the dependencies between the lock to be acquired [ 46.636200][ T411] and SOFTIRQ-irq-unsafe lock: [ 46.636588][ T411] -> (&p->alloc_lock){+.+.}-{2:2} { [ 46.636738][ T411] HARDIRQ-ON-W at: [ 46.636846][ T411] __lock_acquire+0x797/0x1570 [ 46.637027][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.637294][ T411] _raw_spin_lock+0x30/0x40 [ 46.637473][ T411] set_mems_allowed+0x1d/0x210 [ 46.637655][ T411] kernel_init_freeable+0x72/0x310 [ 46.637916][ T411] kernel_init+0x20/0x200 [ 46.638100][ T411] ret_from_fork+0x31/0x70 [ 46.638281][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.638467][ T411] SOFTIRQ-ON-W at: [ 46.638572][ T411] __lock_acquire+0x797/0x1570 [ 46.638760][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.638947][ T411] _raw_spin_lock+0x30/0x40 [ 46.639126][ T411] set_mems_allowed+0x1d/0x210 [ 46.639301][ T411] kernel_init_freeable+0x72/0x310 [ 46.639476][ T411] kernel_init+0x20/0x200 [ 46.639655][ T411] ret_from_fork+0x31/0x70 [ 46.639916][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.640097][ T411] INITIAL USE at: [ 46.640206][ T411] __lock_acquire+0x797/0x1570 [ 46.640474][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.640648][ T411] _raw_spin_lock+0x30/0x40 [ 46.640825][ T411] set_mems_allowed+0x1d/0x210 [ 46.641006][ T411] kernel_init_freeable+0x72/0x310 [ 46.641309][ T411] kernel_init+0x20/0x200 [ 46.641891][ T411] ret_from_fork+0x31/0x70 [ 46.642155][ T411] ret_from_fork_asm+0x1a/0x30 [ 46.642584][ T411] } [ 46.642664][ T411] ... key at: [] __key.387+0x0/0x40 [ 46.642883][ T411] ... acquired at: [ 46.642994][ T411] check_prev_add+0x194/0xce0 [ 46.643136][ T411] validate_chain+0x71d/0x9b0 [ 46.643357][ T411] __lock_acquire+0xaf0/0x1570 [ 46.643515][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.643655][ T411] _raw_spin_lock+0x30/0x40 [ 46.643796][ T411] __get_task_comm+0x27/0x70 [ 46.644018][ T411] ref_tracker_alloc+0x2ee/0x490 [ 46.644162][ T411] netdev_get_by_index+0x5e/0x80 [ 46.644311][ T411] fib6_nh_init+0x3d8/0x15b0 [ 46.644451][ T411] ip6_route_info_create+0xf18/0x17d0 [ 46.644715][ T411] addrconf_f6i_alloc+0x265/0x560 [ 46.644874][ T411] __ipv6_dev_ac_inc+0x25f/0xb10 [ 46.645021][ T411] addrconf_join_anycast+0x1c0/0x220 [ 46.645180][ T411] dev_forward_change+0x2a6/0x7b0 [ 46.645414][ T411] addrconf_fixup_forwarding+0x23f/0x460 [ 46.645591][ T411] addrconf_sysctl_forward+0x212/0x2b0 [ 46.645731][ T411] proc_sys_call_handler+0x403/0x5e0 [ 46.645873][ T411] vfs_write+0x9e5/0x10a0 [ 46.646104][ T411] ksys_write+0xf5/0x1e0 [ 46.646242][ T411] do_syscall_64+0xc6/0x1e0 [ 46.646383][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.646558][ T411] [ 46.646631][ T411] [ 46.646631][ T411] stack backtrace: [ 46.646885][ T411] CPU: 0 PID: 411 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 46.647107][ T411] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 46.647516][ T411] Call Trace: [ 46.647635][ T411] [ 46.647711][ T411] dump_stack_lvl+0x82/0xd0 [ 46.647860][ T411] print_bad_irq_dependency+0x957/0xd40 [ 46.648001][ T411] ? hlock_class+0x4e/0x130 [ 46.648237][ T411] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 46.648416][ T411] ? __pfx_usage_skip+0x10/0x10 [ 46.648558][ T411] ? __bfs+0x246/0x650 [ 46.648671][ T411] ? __pfx_usage_match+0x10/0x10 [ 46.648921][ T411] check_irq_usage+0x596/0x850 [ 46.649064][ T411] ? get_page_from_freelist+0x823/0xf60 [ 46.649207][ T411] ? __pfx_check_irq_usage+0x10/0x10 [ 46.649347][ T411] ? __bfs+0x246/0x650 [ 46.649452][ T411] ? __pfx_hlock_conflict+0x10/0x10 [ 46.649593][ T411] ? check_path.constprop.0+0x24/0x50 [ 46.649735][ T411] ? check_noncircular+0x14c/0x3e0 [ 46.649878][ T411] ? __pfx_check_noncircular+0x10/0x10 [ 46.650041][ T411] ? check_prev_add+0x194/0xce0 [ 46.650183][ T411] check_prev_add+0x194/0xce0 [ 46.650328][ T411] ? validate_chain+0x130/0x9b0 [ 46.650474][ T411] validate_chain+0x71d/0x9b0 [ 46.650617][ T411] ? mark_lock+0x38/0x3e0 [ 46.650726][ T411] ? __pfx_validate_chain+0x10/0x10 [ 46.650950][ T411] ? hlock_class+0x4e/0x130 [ 46.651093][ T411] ? mark_lock+0x38/0x3e0 [ 46.651208][ T411] __lock_acquire+0xaf0/0x1570 [ 46.651360][ T411] lock_acquire.part.0+0xeb/0x330 [ 46.651506][ T411] ? __get_task_comm+0x27/0x70 [ 46.651644][ T411] ? mark_lock+0x38/0x3e0 [ 46.651752][ T411] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 46.651930][ T411] ? trace_lock_acquire+0x135/0x1c0 [ 46.652069][ T411] ? __get_task_comm+0x27/0x70 [ 46.652296][ T411] ? lock_acquire+0x32/0xc0 [ 46.652438][ T411] ? __get_task_comm+0x27/0x70 [ 46.652578][ T411] _raw_spin_lock+0x30/0x40 [ 46.652718][ T411] ? __get_task_comm+0x27/0x70 [ 46.652939][ T411] __get_task_comm+0x27/0x70 [ 46.653081][ T411] ref_tracker_alloc+0x2ee/0x490 [ 46.653219][ T411] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 46.653358][ T411] ? dev_get_by_index+0x177/0x270 [ 46.653581][ T411] ? netdev_get_by_index+0x5e/0x80 [ 46.653716][ T411] ? fib6_nh_init+0x3d8/0x15b0 [ 46.653859][ T411] ? ip6_route_info_create+0xf18/0x17d0 [ 46.654001][ T411] ? addrconf_f6i_alloc+0x265/0x560 [ 46.654217][ T411] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 46.654358][ T411] ? addrconf_join_anycast+0x1c0/0x220 [ 46.654497][ T411] ? dev_forward_change+0x2a6/0x7b0 [ 46.654638][ T411] ? addrconf_fixup_forwarding+0x23f/0x460 [ 46.654893][ T411] ? addrconf_sysctl_forward+0x212/0x2b0 [ 46.655033][ T411] ? proc_sys_call_handler+0x403/0x5e0 [ 46.655176][ T411] ? vfs_write+0x9e5/0x10a0 [ 46.655317][ T411] ? ksys_write+0xf5/0x1e0 [ 46.655455][ T411] ? do_syscall_64+0xc6/0x1e0 [ 46.655596][ T411] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.655765][ T411] ? dev_get_by_index+0x177/0x270 [ 46.655906][ T411] netdev_get_by_index+0x5e/0x80 [ 46.656049][ T411] fib6_nh_init+0x3d8/0x15b0 [ 46.656278][ T411] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 46.656461][ T411] ? __pfx_fib6_nh_init+0x10/0x10 [ 46.656597][ T411] ? kasan_save_track+0x14/0x30 [ 46.656737][ T411] ? __kasan_kmalloc+0x7f/0x90 [ 46.656958][ T411] ? __kmalloc+0x1d7/0x3c0 [ 46.657098][ T411] ? fib6_get_table+0x116/0x290 [ 46.657244][ T411] ip6_route_info_create+0xf18/0x17d0 [ 46.657389][ T411] ? __lock_release+0x103/0x460 [ 46.657529][ T411] ? __pfx_ip6_route_info_create+0x10/0x10 [ 46.657705][ T411] ? addrconf_f6i_alloc+0x12d/0x560 [ 46.657848][ T411] addrconf_f6i_alloc+0x265/0x560 [ 46.657985][ T411] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 46.658207][ T411] ? do_raw_write_lock+0x122/0x3b0 [ 46.658348][ T411] ? __pfx_do_raw_write_lock+0x10/0x10 [ 46.658484][ T411] ? lock_acquire+0x32/0xc0 [ 46.658624][ T411] __ipv6_dev_ac_inc+0x25f/0xb10 [ 46.658850][ T411] addrconf_join_anycast+0x1c0/0x220 [ 46.658993][ T411] ? mark_lock+0x38/0x3e0 [ 46.659097][ T411] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 46.659274][ T411] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 46.659524][ T411] dev_forward_change+0x2a6/0x7b0 [ 46.659667][ T411] ? __pfx_dev_forward_change+0x10/0x10 [ 46.659814][ T411] addrconf_fixup_forwarding+0x23f/0x460 [ 46.659959][ T411] addrconf_sysctl_forward+0x212/0x2b0 [ 46.660185][ T411] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 46.660360][ T411] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 46.660529][ T411] ? trace_kmalloc+0x2a/0xe0 [ 46.660665][ T411] ? __kmalloc_node+0x220/0x400 [ 46.660885][ T411] ? proc_sys_call_handler+0x30b/0x5e0 [ 46.661023][ T411] proc_sys_call_handler+0x403/0x5e0 [ 46.661161][ T411] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 46.661334][ T411] ? __lock_acquire+0xaf0/0x1570 [ 46.661480][ T411] vfs_write+0x9e5/0x10a0 [ 46.661584][ T411] ? do_user_addr_fault+0x449/0xbe0 [ 46.661721][ T411] ? __pfx_vfs_write+0x10/0x10 [ 46.661873][ T411] ? find_held_lock+0x2c/0x110 [ 46.662011][ T411] ? __pfx___lock_release+0x10/0x10 [ 46.662232][ T411] ? __fget_light+0x53/0x1e0 [ 46.662370][ T411] ksys_write+0xf5/0x1e0 [ 46.662475][ T411] ? __pfx_ksys_write+0x10/0x10 [ 46.662612][ T411] ? do_user_addr_fault+0x4bd/0xbe0 [ 46.662834][ T411] do_syscall_64+0xc6/0x1e0 [ 46.662972][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 46.663146][ T411] RIP: 0033:0x7efd4ae19957 [ 46.663294][ T411] 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 [ 46.663868][ T411] RSP: 002b:00007fffa15a6518 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 46.664252][ T411] RAX: ffffffffffffffda RBX: 00005559e7f46360 RCX: 00007efd4ae19957 [ 46.664460][ T411] RDX: 0000000000000002 RSI: 00005559e7f463a0 RDI: 0000000000000005 [ 46.664668][ T411] RBP: 00005559e7f484d0 R08: 0000000000000003 R09: 0000000000000077 [ 46.664974][ T411] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 46.665186][ T411] R13: 0000000000000002 R14: 0000000000000002 R15: 00007efd4aed09c0 [ 46.665398][ T411] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr