[ 53.185446][ T485] gre: GRE over IPv4 demultiplexor driver [ 53.200780][ T485] ip_gre: GRE over IPv4 tunneling driver [ 53.262428][ T484] ip (484) used greatest stack depth: 23824 bytes left [ 55.490836][ T508] 8021q: 802.1Q VLAN Support v1.8 [ 59.393371][ T544] GACT probability NOT on [ 63.468669][ T581] [ 63.468789][ T581] ===================================================== [ 63.468968][ T581] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 63.469186][ T581] 6.9.0-rc1-virtme #1 Not tainted [ 63.469330][ T581] ----------------------------------------------------- [ 63.469519][ T581] sysctl/581 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 63.469729][ T581] ffff888005908968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 63.469981][ T581] [ 63.469981][ T581] and this task is already holding: [ 63.470178][ T581] ffff8880057e2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 63.470441][ T581] which would create a new lock dependency: [ 63.470615][ T581] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 63.470830][ T581] [ 63.470830][ T581] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 63.471062][ T581] (&ndev->lock){++--}-{2:2} [ 63.471066][ T581] [ 63.471066][ T581] ... which became SOFTIRQ-irq-safe at: [ 63.471421][ T581] __lock_acquire+0x797/0x1570 [ 63.471566][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.471706][ T581] _raw_write_lock+0x30/0x40 [ 63.471849][ T581] addrconf_rs_timer+0xa9/0x730 [ 63.471989][ T581] call_timer_fn+0x13b/0x230 [ 63.472133][ T581] __run_timers+0x545/0x810 [ 63.472267][ T581] run_timer_softirq+0xe8/0x1b0 [ 63.472415][ T581] __do_softirq+0x1f8/0x5df [ 63.472562][ T581] irq_exit_rcu+0x97/0xc0 [ 63.472703][ T581] sysvec_apic_timer_interrupt+0x75/0x80 [ 63.472845][ T581] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 63.473024][ T581] default_idle+0xf/0x20 [ 63.473127][ T581] default_idle_call+0x6d/0xb0 [ 63.473273][ T581] cpuidle_idle_call+0x1f4/0x280 [ 63.473429][ T581] do_idle+0xf9/0x160 [ 63.473560][ T581] cpu_startup_entry+0x54/0x60 [ 63.473702][ T581] start_secondary+0x21c/0x2b0 [ 63.473841][ T581] common_startup_64+0x12c/0x138 [ 63.473979][ T581] [ 63.473979][ T581] to a SOFTIRQ-irq-unsafe lock: [ 63.474148][ T581] (&p->alloc_lock){+.+.}-{2:2} [ 63.474152][ T581] [ 63.474152][ T581] ... which became SOFTIRQ-irq-unsafe at: [ 63.474506][ T581] ... [ 63.474507][ T581] __lock_acquire+0x797/0x1570 [ 63.474715][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.474857][ T581] _raw_spin_lock+0x30/0x40 [ 63.474992][ T581] set_mems_allowed+0x1d/0x210 [ 63.475131][ T581] kernel_init_freeable+0x72/0x310 [ 63.475272][ T581] kernel_init+0x20/0x200 [ 63.475443][ T581] ret_from_fork+0x31/0x70 [ 63.475600][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.475751][ T581] [ 63.475751][ T581] other info that might help us debug this: [ 63.475751][ T581] [ 63.476041][ T581] Possible interrupt unsafe locking scenario: [ 63.476041][ T581] [ 63.476250][ T581] CPU0 CPU1 [ 63.476393][ T581] ---- ---- [ 63.476550][ T581] lock(&p->alloc_lock); [ 63.476672][ T581] local_irq_disable(); [ 63.476870][ T581] lock(&ndev->lock); [ 63.477059][ T581] lock(&p->alloc_lock); [ 63.477233][ T581] [ 63.477351][ T581] lock(&ndev->lock); [ 63.477465][ T581] [ 63.477465][ T581] *** DEADLOCK *** [ 63.477465][ T581] [ 63.477707][ T581] 3 locks held by sysctl/581: [ 63.477852][ T581] #0: ffff888005c043f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 63.478110][ T581] #1: ffffffff8e7969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 63.478417][ T581] #2: ffff8880057e2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 63.478688][ T581] [ 63.478688][ T581] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 63.478976][ T581] -> (&ndev->lock){++--}-{2:2} { [ 63.479138][ T581] HARDIRQ-ON-W at: [ 63.479256][ T581] __lock_acquire+0x797/0x1570 [ 63.479453][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.479643][ T581] _raw_write_lock_bh+0x38/0x50 [ 63.479837][ T581] addrconf_permanent_addr+0x6e/0x670 [ 63.480021][ T581] addrconf_notify+0x749/0xd60 [ 63.480200][ T581] notifier_call_chain+0xcd/0x150 [ 63.480392][ T581] __dev_notify_flags+0xe6/0x250 [ 63.480590][ T581] dev_change_flags+0xec/0x160 [ 63.480789][ T581] do_setlink+0x7d6/0x21e0 [ 63.480973][ T581] __rtnl_newlink+0xaa7/0xd80 [ 63.481155][ T581] rtnl_newlink+0x63/0xa0 [ 63.481344][ T581] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 63.481533][ T581] netlink_rcv_skb+0x130/0x360 [ 63.481732][ T581] netlink_unicast+0x449/0x710 [ 63.481927][ T581] netlink_sendmsg+0x723/0xbe0 [ 63.482099][ T581] ____sys_sendmsg+0x7b2/0xa10 [ 63.482282][ T581] ___sys_sendmsg+0xee/0x170 [ 63.482478][ T581] __sys_sendmsg+0xcd/0x170 [ 63.482664][ T581] do_syscall_64+0xc6/0x1e0 [ 63.482862][ T581] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 63.483078][ T581] HARDIRQ-ON-R at: [ 63.483187][ T581] __lock_acquire+0x797/0x1570 [ 63.483369][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.483560][ T581] _raw_read_lock_bh+0x44/0x80 [ 63.483740][ T581] inet6_fill_ifla6_attrs+0x516/0x740 [ 63.483920][ T581] inet6_fill_link_af+0x5e/0xe0 [ 63.484108][ T581] rtnl_fill_ifinfo+0x1612/0x29e0 [ 63.484283][ T581] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 63.484483][ T581] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 63.484715][ T581] rtmsg_ifinfo+0x5b/0xa0 [ 63.484895][ T581] register_netdevice+0x1177/0x1690 [ 63.485078][ T581] register_netdev+0x20/0x40 [ 63.485261][ T581] sit_init_net+0x250/0x4f0 [ 63.485457][ T581] ops_init+0x9b/0x560 [ 63.485596][ T581] register_pernet_operations+0x2db/0x710 [ 63.485810][ T581] register_pernet_device+0x2a/0x60 [ 63.485981][ T581] sit_init+0x23/0xe0 [ 63.486123][ T581] do_one_initcall+0x8d/0x1e0 [ 63.486301][ T581] do_initcalls+0x1b2/0x3e0 [ 63.486485][ T581] kernel_init_freeable+0x232/0x310 [ 63.486657][ T581] kernel_init+0x20/0x200 [ 63.486829][ T581] ret_from_fork+0x31/0x70 [ 63.487005][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.487179][ T581] IN-SOFTIRQ-W at: [ 63.487290][ T581] __lock_acquire+0x797/0x1570 [ 63.487477][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.487650][ T581] _raw_write_lock+0x30/0x40 [ 63.487828][ T581] addrconf_rs_timer+0xa9/0x730 [ 63.488016][ T581] call_timer_fn+0x13b/0x230 [ 63.488204][ T581] __run_timers+0x545/0x810 [ 63.488382][ T581] run_timer_softirq+0xe8/0x1b0 [ 63.488676][ T581] __do_softirq+0x1f8/0x5df [ 63.488865][ T581] irq_exit_rcu+0x97/0xc0 [ 63.489046][ T581] sysvec_apic_timer_interrupt+0x75/0x80 [ 63.489250][ T581] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 63.489471][ T581] default_idle+0xf/0x20 [ 63.489671][ T581] default_idle_call+0x6d/0xb0 [ 63.489860][ T581] cpuidle_idle_call+0x1f4/0x280 [ 63.490038][ T581] do_idle+0xf9/0x160 [ 63.490192][ T581] cpu_startup_entry+0x54/0x60 [ 63.490366][ T581] start_secondary+0x21c/0x2b0 [ 63.490539][ T581] common_startup_64+0x12c/0x138 [ 63.490721][ T581] IN-SOFTIRQ-R at: [ 63.490834][ T581] __lock_acquire+0x797/0x1570 [ 63.491019][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.491203][ T581] _raw_read_lock_bh+0x44/0x80 [ 63.491469][ T581] ipv6_get_lladdr+0xa9/0x3e0 [ 63.491648][ T581] addrconf_rs_timer+0x24a/0x730 [ 63.491821][ T581] call_timer_fn+0x13b/0x230 [ 63.491997][ T581] __run_timers+0x545/0x810 [ 63.492176][ T581] run_timer_softirq+0xe8/0x1b0 [ 63.492350][ T581] __do_softirq+0x1f8/0x5df [ 63.492522][ T581] irq_exit_rcu+0x97/0xc0 [ 63.492789][ T581] sysvec_apic_timer_interrupt+0x75/0x80 [ 63.492995][ T581] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 63.493201][ T581] default_idle+0xf/0x20 [ 63.493458][ T581] default_idle_call+0x6d/0xb0 [ 63.493649][ T581] cpuidle_idle_call+0x1f4/0x280 [ 63.493842][ T581] do_idle+0xf9/0x160 [ 63.493982][ T581] cpu_startup_entry+0x54/0x60 [ 63.494241][ T581] start_secondary+0x21c/0x2b0 [ 63.494416][ T581] common_startup_64+0x12c/0x138 [ 63.494590][ T581] INITIAL USE at: [ 63.494790][ T581] __lock_acquire+0x797/0x1570 [ 63.494965][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.495140][ T581] _raw_write_lock_bh+0x38/0x50 [ 63.495315][ T581] addrconf_permanent_addr+0x6e/0x670 [ 63.495586][ T581] addrconf_notify+0x749/0xd60 [ 63.495769][ T581] notifier_call_chain+0xcd/0x150 [ 63.495944][ T581] __dev_notify_flags+0xe6/0x250 [ 63.496125][ T581] dev_change_flags+0xec/0x160 [ 63.496297][ T581] do_setlink+0x7d6/0x21e0 [ 63.496472][ T581] __rtnl_newlink+0xaa7/0xd80 [ 63.496657][ T581] rtnl_newlink+0x63/0xa0 [ 63.496915][ T581] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 63.497089][ T581] netlink_rcv_skb+0x130/0x360 [ 63.497270][ T581] netlink_unicast+0x449/0x710 [ 63.497535][ T581] netlink_sendmsg+0x723/0xbe0 [ 63.497713][ T581] ____sys_sendmsg+0x7b2/0xa10 [ 63.497889][ T581] ___sys_sendmsg+0xee/0x170 [ 63.498147][ T581] __sys_sendmsg+0xcd/0x170 [ 63.498322][ T581] do_syscall_64+0xc6/0x1e0 [ 63.498497][ T581] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 63.498716][ T581] INITIAL READ USE at: [ 63.498905][ T581] __lock_acquire+0x797/0x1570 [ 63.499078][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.499251][ T581] _raw_read_lock_bh+0x44/0x80 [ 63.499510][ T581] inet6_fill_ifla6_attrs+0x516/0x740 [ 63.499731][ T581] inet6_fill_link_af+0x5e/0xe0 [ 63.499909][ T581] rtnl_fill_ifinfo+0x1612/0x29e0 [ 63.500093][ T581] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 63.500299][ T581] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 63.500519][ T581] rtmsg_ifinfo+0x5b/0xa0 [ 63.500716][ T581] register_netdevice+0x1177/0x1690 [ 63.501018][ T581] register_netdev+0x20/0x40 [ 63.501204][ T581] sit_init_net+0x250/0x4f0 [ 63.501379][ T581] ops_init+0x9b/0x560 [ 63.501664][ T581] register_pernet_operations+0x2db/0x710 [ 63.501916][ T581] register_pernet_device+0x2a/0x60 [ 63.502123][ T581] sit_init+0x23/0xe0 [ 63.502388][ T581] do_one_initcall+0x8d/0x1e0 [ 63.502570][ T581] do_initcalls+0x1b2/0x3e0 [ 63.502758][ T581] kernel_init_freeable+0x232/0x310 [ 63.503049][ T581] kernel_init+0x20/0x200 [ 63.503231][ T581] ret_from_fork+0x31/0x70 [ 63.503420][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.503687][ T581] } [ 63.503780][ T581] ... key at: [] __key.37+0x0/0x40 [ 63.504001][ T581] [ 63.504001][ T581] the dependencies between the lock to be acquired [ 63.504003][ T581] and SOFTIRQ-irq-unsafe lock: [ 63.504468][ T581] -> (&p->alloc_lock){+.+.}-{2:2} { [ 63.504627][ T581] HARDIRQ-ON-W at: [ 63.504748][ T581] __lock_acquire+0x797/0x1570 [ 63.504940][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.505212][ T581] _raw_spin_lock+0x30/0x40 [ 63.505417][ T581] set_mems_allowed+0x1d/0x210 [ 63.505603][ T581] kernel_init_freeable+0x72/0x310 [ 63.505870][ T581] kernel_init+0x20/0x200 [ 63.506052][ T581] ret_from_fork+0x31/0x70 [ 63.506229][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.506415][ T581] SOFTIRQ-ON-W at: [ 63.506607][ T581] __lock_acquire+0x797/0x1570 [ 63.506788][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.506963][ T581] _raw_spin_lock+0x30/0x40 [ 63.507147][ T581] set_mems_allowed+0x1d/0x210 [ 63.507413][ T581] kernel_init_freeable+0x72/0x310 [ 63.507584][ T581] kernel_init+0x20/0x200 [ 63.507781][ T581] ret_from_fork+0x31/0x70 [ 63.508048][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.508234][ T581] INITIAL USE at: [ 63.508337][ T581] __lock_acquire+0x797/0x1570 [ 63.508519][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.508806][ T581] _raw_spin_lock+0x30/0x40 [ 63.508987][ T581] set_mems_allowed+0x1d/0x210 [ 63.509169][ T581] kernel_init_freeable+0x72/0x310 [ 63.509529][ T581] kernel_init+0x20/0x200 [ 63.509735][ T581] ret_from_fork+0x31/0x70 [ 63.509908][ T581] ret_from_fork_asm+0x1a/0x30 [ 63.510078][ T581] } [ 63.510149][ T581] ... key at: [] __key.387+0x0/0x40 [ 63.510355][ T581] ... acquired at: [ 63.510460][ T581] check_prev_add+0x194/0xce0 [ 63.510604][ T581] validate_chain+0x71d/0x9b0 [ 63.510755][ T581] __lock_acquire+0xaf0/0x1570 [ 63.510893][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.511039][ T581] _raw_spin_lock+0x30/0x40 [ 63.511180][ T581] __get_task_comm+0x27/0x70 [ 63.511419][ T581] ref_tracker_alloc+0x2ee/0x490 [ 63.511560][ T581] netdev_get_by_index+0x5e/0x80 [ 63.511718][ T581] fib6_nh_init+0x3d8/0x15b0 [ 63.511883][ T581] ip6_route_info_create+0xf18/0x17d0 [ 63.512022][ T581] addrconf_f6i_alloc+0x265/0x560 [ 63.512166][ T581] __ipv6_dev_ac_inc+0x25f/0xb10 [ 63.512305][ T581] addrconf_join_anycast+0x1c0/0x220 [ 63.512456][ T581] dev_forward_change+0x2a6/0x7b0 [ 63.512594][ T581] addrconf_fixup_forwarding+0x23f/0x460 [ 63.512864][ T581] addrconf_sysctl_forward+0x212/0x2b0 [ 63.513020][ T581] proc_sys_call_handler+0x403/0x5e0 [ 63.513161][ T581] vfs_write+0x9e5/0x10a0 [ 63.513330][ T581] ksys_write+0xf5/0x1e0 [ 63.513604][ T581] do_syscall_64+0xc6/0x1e0 [ 63.513750][ T581] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 63.513923][ T581] [ 63.513994][ T581] [ 63.513994][ T581] stack backtrace: [ 63.514163][ T581] CPU: 1 PID: 581 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 63.514381][ T581] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 63.514704][ T581] Call Trace: [ 63.514910][ T581] [ 63.514982][ T581] dump_stack_lvl+0x82/0xd0 [ 63.515127][ T581] print_bad_irq_dependency+0x957/0xd40 [ 63.515265][ T581] ? hlock_class+0x4e/0x130 [ 63.515433][ T581] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 63.515701][ T581] ? __pfx_usage_skip+0x10/0x10 [ 63.515841][ T581] ? __bfs+0x246/0x650 [ 63.515947][ T581] ? __pfx_usage_match+0x10/0x10 [ 63.516085][ T581] check_irq_usage+0x596/0x850 [ 63.516306][ T581] ? __pfx_check_irq_usage+0x10/0x10 [ 63.516461][ T581] ? __bfs+0x246/0x650 [ 63.516563][ T581] ? __pfx_hlock_conflict+0x10/0x10 [ 63.516712][ T581] ? check_path.constprop.0+0x24/0x50 [ 63.516929][ T581] ? check_noncircular+0x14c/0x3e0 [ 63.517072][ T581] ? __pfx_check_noncircular+0x10/0x10 [ 63.517212][ T581] ? check_prev_add+0x194/0xce0 [ 63.517357][ T581] check_prev_add+0x194/0xce0 [ 63.517507][ T581] ? validate_chain+0x130/0x9b0 [ 63.517747][ T581] validate_chain+0x71d/0x9b0 [ 63.517885][ T581] ? mark_lock+0x38/0x3e0 [ 63.517987][ T581] ? __pfx_validate_chain+0x10/0x10 [ 63.518127][ T581] ? hlock_class+0x4e/0x130 [ 63.518349][ T581] ? mark_lock+0x38/0x3e0 [ 63.518465][ T581] __lock_acquire+0xaf0/0x1570 [ 63.518606][ T581] lock_acquire.part.0+0xeb/0x330 [ 63.518749][ T581] ? __get_task_comm+0x27/0x70 [ 63.518889][ T581] ? mark_lock+0x38/0x3e0 [ 63.519074][ T581] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 63.519214][ T581] ? trace_lock_acquire+0x135/0x1c0 [ 63.519355][ T581] ? __get_task_comm+0x27/0x70 [ 63.519500][ T581] ? lock_acquire+0x32/0xc0 [ 63.519738][ T581] ? __get_task_comm+0x27/0x70 [ 63.519876][ T581] _raw_spin_lock+0x30/0x40 [ 63.520017][ T581] ? __get_task_comm+0x27/0x70 [ 63.520159][ T581] __get_task_comm+0x27/0x70 [ 63.520510][ T581] ref_tracker_alloc+0x2ee/0x490 [ 63.520666][ T581] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 63.520809][ T581] ? dev_get_by_index+0x177/0x270 [ 63.520946][ T581] ? netdev_get_by_index+0x5e/0x80 [ 63.521086][ T581] ? fib6_nh_init+0x3d8/0x15b0 [ 63.521229][ T581] ? ip6_route_info_create+0xf18/0x17d0 [ 63.521371][ T581] ? addrconf_f6i_alloc+0x265/0x560 [ 63.521520][ T581] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 63.521674][ T581] ? addrconf_join_anycast+0x1c0/0x220 [ 63.521896][ T581] ? dev_forward_change+0x2a6/0x7b0 [ 63.522035][ T581] ? addrconf_fixup_forwarding+0x23f/0x460 [ 63.522205][ T581] ? addrconf_sysctl_forward+0x212/0x2b0 [ 63.522351][ T581] ? proc_sys_call_handler+0x403/0x5e0 [ 63.522620][ T581] ? vfs_write+0x9e5/0x10a0 [ 63.522772][ T581] ? ksys_write+0xf5/0x1e0 [ 63.522909][ T581] ? do_syscall_64+0xc6/0x1e0 [ 63.523052][ T581] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 63.523226][ T581] ? dev_get_by_index+0x177/0x270 [ 63.523367][ T581] netdev_get_by_index+0x5e/0x80 [ 63.523517][ T581] fib6_nh_init+0x3d8/0x15b0 [ 63.523669][ T581] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 63.523925][ T581] ? __pfx_fib6_nh_init+0x10/0x10 [ 63.524062][ T581] ? kasan_save_track+0x14/0x30 [ 63.524206][ T581] ? __kasan_kmalloc+0x7f/0x90 [ 63.524349][ T581] ? __kmalloc+0x1d7/0x3c0 [ 63.524596][ T581] ? fib6_get_table+0x116/0x290 [ 63.524765][ T581] ip6_route_info_create+0xf18/0x17d0 [ 63.524906][ T581] ? __lock_release+0x103/0x460 [ 63.525051][ T581] ? __pfx_ip6_route_info_create+0x10/0x10 [ 63.525229][ T581] ? addrconf_f6i_alloc+0x12d/0x560 [ 63.525386][ T581] addrconf_f6i_alloc+0x265/0x560 [ 63.525536][ T581] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 63.525708][ T581] ? do_raw_write_lock+0x122/0x3b0 [ 63.525953][ T581] ? __pfx_do_raw_write_lock+0x10/0x10 [ 63.526090][ T581] ? lock_acquire+0x32/0xc0 [ 63.526228][ T581] __ipv6_dev_ac_inc+0x25f/0xb10 [ 63.526379][ T581] addrconf_join_anycast+0x1c0/0x220 [ 63.526534][ T581] ? mark_lock+0x38/0x3e0 [ 63.526732][ T581] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 63.526904][ T581] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 63.527077][ T581] dev_forward_change+0x2a6/0x7b0 [ 63.527217][ T581] ? __pfx_dev_forward_change+0x10/0x10 [ 63.527448][ T581] addrconf_fixup_forwarding+0x23f/0x460 [ 63.527593][ T581] addrconf_sysctl_forward+0x212/0x2b0 [ 63.527751][ T581] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 63.527926][ T581] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 63.528197][ T581] ? trace_kmalloc+0x2a/0xe0 [ 63.528341][ T581] ? __kmalloc_node+0x220/0x400 [ 63.528593][ T581] ? proc_sys_call_handler+0x30b/0x5e0 [ 63.528760][ T581] proc_sys_call_handler+0x403/0x5e0 [ 63.528984][ T581] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 63.529170][ T581] ? __lock_acquire+0xaf0/0x1570 [ 63.529313][ T581] vfs_write+0x9e5/0x10a0 [ 63.529432][ T581] ? do_user_addr_fault+0x449/0xbe0 [ 63.529662][ T581] ? __pfx_vfs_write+0x10/0x10 [ 63.529814][ T581] ? find_held_lock+0x2c/0x110 [ 63.529952][ T581] ? __pfx___lock_release+0x10/0x10 [ 63.530104][ T581] ? __fget_light+0x53/0x1e0 [ 63.530327][ T581] ksys_write+0xf5/0x1e0 [ 63.530448][ T581] ? __pfx_ksys_write+0x10/0x10 [ 63.530585][ T581] ? do_user_addr_fault+0x4bd/0xbe0 [ 63.530737][ T581] do_syscall_64+0xc6/0x1e0 [ 63.530888][ T581] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 63.531143][ T581] RIP: 0033:0x7ff77ce87957 [ 63.531292][ T581] 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 [ 63.531966][ T581] RSP: 002b:00007fffc2fbd998 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 63.532177][ T581] RAX: ffffffffffffffda RBX: 000055fb2c158360 RCX: 00007ff77ce87957 [ 63.532476][ T581] RDX: 0000000000000002 RSI: 000055fb2c1583a0 RDI: 0000000000000005 [ 63.532719][ T581] RBP: 000055fb2c15a4d0 R08: 0000000000000003 R09: 0000000000000077 [ 63.532923][ T581] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 63.533137][ T581] R13: 0000000000000002 R14: 0000000000000002 R15: 00007ff77cf3e9c0 [ 63.533355][ T581] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr