[ 24.996125][ T260] ip (260) used greatest stack depth: 22752 bytes left [ 28.652347][ T296] 8021q: 802.1Q VLAN Support v1.8 [ 29.718078][ T307] gre: GRE over IPv4 demultiplexor driver [ 29.738469][ T307] ip_gre: GRE over IPv4 tunneling driver [ 35.738993][ T364] GACT probability NOT on [ 37.235062][ T378] [ 37.235241][ T378] ===================================================== [ 37.235433][ T378] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 37.235668][ T378] 6.9.0-rc1-virtme #1 Not tainted [ 37.235824][ T378] ----------------------------------------------------- [ 37.236014][ T378] sysctl/378 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 37.236243][ T378] ffff8880025d4ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 37.236528][ T378] [ 37.236528][ T378] and this task is already holding: [ 37.236755][ T378] ffff888005b72580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 37.237033][ T378] which would create a new lock dependency: [ 37.237230][ T378] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 37.237461][ T378] [ 37.237461][ T378] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 37.237720][ T378] (&ndev->lock){++--}-{2:2} [ 37.237724][ T378] [ 37.237724][ T378] ... which became SOFTIRQ-irq-safe at: [ 37.238101][ T378] __lock_acquire+0x797/0x1570 [ 37.238265][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.238417][ T378] _raw_write_lock+0x30/0x40 [ 37.238584][ T378] addrconf_rs_timer+0xa9/0x730 [ 37.238740][ T378] call_timer_fn+0x13b/0x230 [ 37.238895][ T378] __run_timers+0x545/0x810 [ 37.239050][ T378] timer_expire_remote+0x9b/0xe0 [ 37.239204][ T378] tmigr_handle_remote_cpu+0x270/0x430 [ 37.239365][ T378] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.239525][ T378] tmigr_handle_remote+0x21d/0x3a0 [ 37.239678][ T378] __do_softirq+0x1f8/0x5df [ 37.239833][ T378] irq_exit_rcu+0x97/0xc0 [ 37.239984][ T378] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.240137][ T378] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.240328][ T378] default_idle+0xf/0x20 [ 37.240445][ T378] default_idle_call+0x6d/0xb0 [ 37.240599][ T378] cpuidle_idle_call+0x1f4/0x280 [ 37.240764][ T378] do_idle+0xf9/0x160 [ 37.240881][ T378] cpu_startup_entry+0x54/0x60 [ 37.241058][ T378] start_secondary+0x21c/0x2b0 [ 37.241214][ T378] common_startup_64+0x12c/0x138 [ 37.241365][ T378] [ 37.241365][ T378] to a SOFTIRQ-irq-unsafe lock: [ 37.241558][ T378] (&p->alloc_lock){+.+.}-{2:2} [ 37.241562][ T378] [ 37.241562][ T378] ... which became SOFTIRQ-irq-unsafe at: [ 37.241934][ T378] ... [ 37.241936][ T378] __lock_acquire+0x797/0x1570 [ 37.242184][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.242337][ T378] _raw_spin_lock+0x30/0x40 [ 37.242491][ T378] set_mems_allowed+0x1d/0x210 [ 37.242644][ T378] kernel_init_freeable+0x72/0x310 [ 37.242799][ T378] kernel_init+0x20/0x200 [ 37.242959][ T378] ret_from_fork+0x31/0x70 [ 37.243118][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.243277][ T378] [ 37.243277][ T378] other info that might help us debug this: [ 37.243277][ T378] [ 37.243580][ T378] Possible interrupt unsafe locking scenario: [ 37.243580][ T378] [ 37.243807][ T378] CPU0 CPU1 [ 37.243960][ T378] ---- ---- [ 37.244112][ T378] lock(&p->alloc_lock); [ 37.244234][ T378] local_irq_disable(); [ 37.244428][ T378] lock(&ndev->lock); [ 37.244621][ T378] lock(&p->alloc_lock); [ 37.244811][ T378] [ 37.244926][ T378] lock(&ndev->lock); [ 37.245046][ T378] [ 37.245046][ T378] *** DEADLOCK *** [ 37.245046][ T378] [ 37.245269][ T378] 3 locks held by sysctl/378: [ 37.245422][ T378] #0: ffff888005ed13f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 37.245709][ T378] #1: ffffffff8b1969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 37.246019][ T378] #2: ffff888005b72580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 37.246294][ T378] [ 37.246294][ T378] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 37.246604][ T378] -> (&ndev->lock){++--}-{2:2} { [ 37.246763][ T378] HARDIRQ-ON-W at: [ 37.246886][ T378] __lock_acquire+0x797/0x1570 [ 37.247080][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.247280][ T378] _raw_write_lock_bh+0x38/0x50 [ 37.247475][ T378] addrconf_permanent_addr+0x6e/0x670 [ 37.247667][ T378] addrconf_notify+0x749/0xd60 [ 37.247866][ T378] notifier_call_chain+0xcd/0x150 [ 37.248070][ T378] __dev_notify_flags+0xe6/0x250 [ 37.248265][ T378] dev_change_flags+0xec/0x160 [ 37.248459][ T378] do_setlink+0x7d6/0x21e0 [ 37.248653][ T378] __rtnl_newlink+0xaa7/0xd80 [ 37.248849][ T378] rtnl_newlink+0x63/0xa0 [ 37.249040][ T378] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 37.249237][ T378] netlink_rcv_skb+0x130/0x360 [ 37.249429][ T378] netlink_unicast+0x449/0x710 [ 37.249621][ T378] netlink_sendmsg+0x723/0xbe0 [ 37.249814][ T378] ____sys_sendmsg+0x7b2/0xa10 [ 37.250008][ T378] ___sys_sendmsg+0xee/0x170 [ 37.250202][ T378] __sys_sendmsg+0xcd/0x170 [ 37.250394][ T378] do_syscall_64+0xc6/0x1e0 [ 37.250594][ T378] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.250825][ T378] HARDIRQ-ON-R at: [ 37.250942][ T378] __lock_acquire+0x797/0x1570 [ 37.251137][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.251331][ T378] _raw_read_lock_bh+0x44/0x80 [ 37.251525][ T378] inet6_fill_ifla6_attrs+0x516/0x740 [ 37.251719][ T378] inet6_fill_link_af+0x5e/0xe0 [ 37.251918][ T378] rtnl_fill_ifinfo+0x1612/0x29e0 [ 37.252129][ T378] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 37.252322][ T378] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 37.252558][ T378] rtmsg_ifinfo+0x5b/0xa0 [ 37.252749][ T378] register_netdevice+0x1177/0x1690 [ 37.252944][ T378] register_netdev+0x20/0x40 [ 37.253146][ T378] sit_init_net+0x250/0x4f0 [ 37.253344][ T378] ops_init+0x9b/0x560 [ 37.253500][ T378] register_pernet_operations+0x2db/0x710 [ 37.253737][ T378] register_pernet_device+0x2a/0x60 [ 37.253942][ T378] sit_init+0x23/0xe0 [ 37.254100][ T378] do_one_initcall+0x8d/0x1e0 [ 37.254308][ T378] do_initcalls+0x1b2/0x3e0 [ 37.254506][ T378] kernel_init_freeable+0x232/0x310 [ 37.254705][ T378] kernel_init+0x20/0x200 [ 37.254901][ T378] ret_from_fork+0x31/0x70 [ 37.255100][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.255298][ T378] IN-SOFTIRQ-W at: [ 37.255421][ T378] __lock_acquire+0x797/0x1570 [ 37.255624][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.255819][ T378] _raw_write_lock+0x30/0x40 [ 37.256015][ T378] addrconf_rs_timer+0xa9/0x730 [ 37.256210][ T378] call_timer_fn+0x13b/0x230 [ 37.256407][ T378] __run_timers+0x545/0x810 [ 37.256617][ T378] timer_expire_remote+0x9b/0xe0 [ 37.256817][ T378] tmigr_handle_remote_cpu+0x270/0x430 [ 37.257018][ T378] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.257214][ T378] tmigr_handle_remote+0x21d/0x3a0 [ 37.257413][ T378] __do_softirq+0x1f8/0x5df [ 37.257611][ T378] irq_exit_rcu+0x97/0xc0 [ 37.257803][ T378] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.258039][ T378] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.258274][ T378] default_idle+0xf/0x20 [ 37.258468][ T378] default_idle_call+0x6d/0xb0 [ 37.258673][ T378] cpuidle_idle_call+0x1f4/0x280 [ 37.258869][ T378] do_idle+0xf9/0x160 [ 37.259025][ T378] cpu_startup_entry+0x54/0x60 [ 37.259225][ T378] start_secondary+0x21c/0x2b0 [ 37.259433][ T378] common_startup_64+0x12c/0x138 [ 37.259632][ T378] IN-SOFTIRQ-R at: [ 37.259751][ T378] __lock_acquire+0x797/0x1570 [ 37.259952][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.260145][ T378] _raw_read_lock_bh+0x44/0x80 [ 37.260342][ T378] ipv6_get_lladdr+0xa9/0x3e0 [ 37.260537][ T378] addrconf_rs_timer+0x24a/0x730 [ 37.260734][ T378] call_timer_fn+0x13b/0x230 [ 37.260930][ T378] __run_timers+0x545/0x810 [ 37.261134][ T378] timer_expire_remote+0x9b/0xe0 [ 37.261330][ T378] tmigr_handle_remote_cpu+0x270/0x430 [ 37.261525][ T378] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.261719][ T378] tmigr_handle_remote+0x21d/0x3a0 [ 37.261928][ T378] __do_softirq+0x1f8/0x5df [ 37.262133][ T378] irq_exit_rcu+0x97/0xc0 [ 37.262336][ T378] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.262581][ T378] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.262809][ T378] default_idle+0xf/0x20 [ 37.263008][ T378] default_idle_call+0x6d/0xb0 [ 37.263223][ T378] cpuidle_idle_call+0x1f4/0x280 [ 37.263422][ T378] do_idle+0xf9/0x160 [ 37.263579][ T378] cpu_startup_entry+0x54/0x60 [ 37.263779][ T378] start_secondary+0x21c/0x2b0 [ 37.263978][ T378] common_startup_64+0x12c/0x138 [ 37.264171][ T378] INITIAL USE at: [ 37.264289][ T378] __lock_acquire+0x797/0x1570 [ 37.264492][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.264695][ T378] _raw_write_lock_bh+0x38/0x50 [ 37.264892][ T378] addrconf_permanent_addr+0x6e/0x670 [ 37.265091][ T378] addrconf_notify+0x749/0xd60 [ 37.265289][ T378] notifier_call_chain+0xcd/0x150 [ 37.265481][ T378] __dev_notify_flags+0xe6/0x250 [ 37.265684][ T378] dev_change_flags+0xec/0x160 [ 37.265884][ T378] do_setlink+0x7d6/0x21e0 [ 37.266098][ T378] __rtnl_newlink+0xaa7/0xd80 [ 37.266294][ T378] rtnl_newlink+0x63/0xa0 [ 37.266492][ T378] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 37.266773][ T378] netlink_rcv_skb+0x130/0x360 [ 37.266980][ T378] netlink_unicast+0x449/0x710 [ 37.267174][ T378] netlink_sendmsg+0x723/0xbe0 [ 37.267369][ T378] ____sys_sendmsg+0x7b2/0xa10 [ 37.267651][ T378] ___sys_sendmsg+0xee/0x170 [ 37.267847][ T378] __sys_sendmsg+0xcd/0x170 [ 37.268040][ T378] do_syscall_64+0xc6/0x1e0 [ 37.268318][ T378] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.268562][ T378] INITIAL READ USE at: [ 37.268682][ T378] __lock_acquire+0x797/0x1570 [ 37.268875][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.269242][ T378] _raw_read_lock_bh+0x44/0x80 [ 37.269439][ T378] inet6_fill_ifla6_attrs+0x516/0x740 [ 37.269673][ T378] inet6_fill_link_af+0x5e/0xe0 [ 37.269877][ T378] rtnl_fill_ifinfo+0x1612/0x29e0 [ 37.270079][ T378] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 37.270314][ T378] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 37.270629][ T378] rtmsg_ifinfo+0x5b/0xa0 [ 37.270823][ T378] register_netdevice+0x1177/0x1690 [ 37.271052][ T378] register_netdev+0x20/0x40 [ 37.271339][ T378] sit_init_net+0x250/0x4f0 [ 37.271534][ T378] ops_init+0x9b/0x560 [ 37.271728][ T378] register_pernet_operations+0x2db/0x710 [ 37.272054][ T378] register_pernet_device+0x2a/0x60 [ 37.272296][ T378] sit_init+0x23/0xe0 [ 37.272497][ T378] do_one_initcall+0x8d/0x1e0 [ 37.272701][ T378] do_initcalls+0x1b2/0x3e0 [ 37.272977][ T378] kernel_init_freeable+0x232/0x310 [ 37.273218][ T378] kernel_init+0x20/0x200 [ 37.273411][ T378] ret_from_fork+0x31/0x70 [ 37.273690][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.273883][ T378] } [ 37.273962][ T378] ... key at: [] __key.37+0x0/0x40 [ 37.274200][ T378] [ 37.274200][ T378] the dependencies between the lock to be acquired [ 37.274201][ T378] and SOFTIRQ-irq-unsafe lock: [ 37.274701][ T378] -> (&p->alloc_lock){+.+.}-{2:2} { [ 37.274861][ T378] HARDIRQ-ON-W at: [ 37.275062][ T378] __lock_acquire+0x797/0x1570 [ 37.275269][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.275470][ T378] _raw_spin_lock+0x30/0x40 [ 37.275680][ T378] set_mems_allowed+0x1d/0x210 [ 37.275960][ T378] kernel_init_freeable+0x72/0x310 [ 37.276164][ T378] kernel_init+0x20/0x200 [ 37.276361][ T378] ret_from_fork+0x31/0x70 [ 37.276645][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.276841][ T378] SOFTIRQ-ON-W at: [ 37.276964][ T378] __lock_acquire+0x797/0x1570 [ 37.277160][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.277440][ T378] _raw_spin_lock+0x30/0x40 [ 37.277634][ T378] set_mems_allowed+0x1d/0x210 [ 37.277827][ T378] kernel_init_freeable+0x72/0x310 [ 37.278106][ T378] kernel_init+0x20/0x200 [ 37.278299][ T378] ret_from_fork+0x31/0x70 [ 37.278497][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.278695][ T378] INITIAL USE at: [ 37.278891][ T378] __lock_acquire+0x797/0x1570 [ 37.279083][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.279278][ T378] _raw_spin_lock+0x30/0x40 [ 37.279475][ T378] set_mems_allowed+0x1d/0x210 [ 37.279748][ T378] kernel_init_freeable+0x72/0x310 [ 37.279946][ T378] kernel_init+0x20/0x200 [ 37.280145][ T378] ret_from_fork+0x31/0x70 [ 37.280420][ T378] ret_from_fork_asm+0x1a/0x30 [ 37.280614][ T378] } [ 37.280694][ T378] ... key at: [] __key.387+0x0/0x40 [ 37.280927][ T378] ... acquired at: [ 37.281212][ T378] check_prev_add+0x194/0xce0 [ 37.281371][ T378] validate_chain+0x71d/0x9b0 [ 37.281528][ T378] __lock_acquire+0xaf0/0x1570 [ 37.281684][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.281841][ T378] _raw_spin_lock+0x30/0x40 [ 37.281995][ T378] __get_task_comm+0x27/0x70 [ 37.282164][ T378] ref_tracker_alloc+0x2ee/0x490 [ 37.282320][ T378] netdev_get_by_index+0x5e/0x80 [ 37.282476][ T378] fib6_nh_init+0x3d8/0x15b0 [ 37.282718][ T378] ip6_route_info_create+0xf18/0x17d0 [ 37.282885][ T378] addrconf_f6i_alloc+0x265/0x560 [ 37.283041][ T378] __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.283198][ T378] addrconf_join_anycast+0x1c0/0x220 [ 37.283437][ T378] dev_forward_change+0x2a6/0x7b0 [ 37.283593][ T378] addrconf_fixup_forwarding+0x23f/0x460 [ 37.283783][ T378] addrconf_sysctl_forward+0x212/0x2b0 [ 37.283942][ T378] proc_sys_call_handler+0x403/0x5e0 [ 37.284182][ T378] vfs_write+0x9e5/0x10a0 [ 37.284336][ T378] ksys_write+0xf5/0x1e0 [ 37.284487][ T378] do_syscall_64+0xc6/0x1e0 [ 37.284640][ T378] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.284913][ T378] [ 37.284992][ T378] [ 37.284992][ T378] stack backtrace: [ 37.285178][ T378] CPU: 3 PID: 378 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 37.285411][ T378] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.285836][ T378] Call Trace: [ 37.285955][ T378] [ 37.286035][ T378] dump_stack_lvl+0x82/0xd0 [ 37.286194][ T378] print_bad_irq_dependency+0x957/0xd40 [ 37.286431][ T378] ? hlock_class+0x4e/0x130 [ 37.286587][ T378] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 37.286779][ T378] ? __pfx_usage_skip+0x10/0x10 [ 37.286939][ T378] ? __bfs+0x246/0x650 [ 37.287138][ T378] ? __pfx_usage_match+0x10/0x10 [ 37.287293][ T378] check_irq_usage+0x596/0x850 [ 37.287451][ T378] ? __pfx_check_irq_usage+0x10/0x10 [ 37.287607][ T378] ? __bfs+0x246/0x650 [ 37.287805][ T378] ? __pfx_hlock_conflict+0x10/0x10 [ 37.287961][ T378] ? check_path.constprop.0+0x24/0x50 [ 37.288113][ T378] ? check_noncircular+0x14c/0x3e0 [ 37.288281][ T378] ? __pfx_check_noncircular+0x10/0x10 [ 37.288442][ T378] ? check_prev_add+0x194/0xce0 [ 37.288680][ T378] check_prev_add+0x194/0xce0 [ 37.288834][ T378] ? validate_chain+0x130/0x9b0 [ 37.288990][ T378] validate_chain+0x71d/0x9b0 [ 37.289154][ T378] ? mark_lock+0x38/0x3e0 [ 37.289351][ T378] ? __pfx_validate_chain+0x10/0x10 [ 37.289507][ T378] ? hlock_class+0x4e/0x130 [ 37.289711][ T378] ? mark_lock+0x38/0x3e0 [ 37.289849][ T378] __lock_acquire+0xaf0/0x1570 [ 37.290011][ T378] lock_acquire.part.0+0xeb/0x330 [ 37.290247][ T378] ? __get_task_comm+0x27/0x70 [ 37.290400][ T378] ? mark_lock+0x38/0x3e0 [ 37.290516][ T378] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 37.290671][ T378] ? trace_lock_acquire+0x135/0x1c0 [ 37.290827][ T378] ? __get_task_comm+0x27/0x70 [ 37.290980][ T378] ? lock_acquire+0x32/0xc0 [ 37.291169][ T378] ? __get_task_comm+0x27/0x70 [ 37.291335][ T378] _raw_spin_lock+0x30/0x40 [ 37.291574][ T378] ? __get_task_comm+0x27/0x70 [ 37.291728][ T378] __get_task_comm+0x27/0x70 [ 37.291886][ T378] ref_tracker_alloc+0x2ee/0x490 [ 37.292052][ T378] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 37.292207][ T378] ? dev_get_by_index+0x177/0x270 [ 37.292442][ T378] ? netdev_get_by_index+0x5e/0x80 [ 37.292598][ T378] ? fib6_nh_init+0x3d8/0x15b0 [ 37.292788][ T378] ? ip6_route_info_create+0xf18/0x17d0 [ 37.292954][ T378] ? addrconf_f6i_alloc+0x265/0x560 [ 37.293305][ T378] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.293483][ T378] ? addrconf_join_anycast+0x1c0/0x220 [ 37.293650][ T378] ? dev_forward_change+0x2a6/0x7b0 [ 37.293817][ T378] ? addrconf_fixup_forwarding+0x23f/0x460 [ 37.294025][ T378] ? addrconf_sysctl_forward+0x212/0x2b0 [ 37.294211][ T378] ? proc_sys_call_handler+0x403/0x5e0 [ 37.294368][ T378] ? vfs_write+0x9e5/0x10a0 [ 37.294522][ T378] ? ksys_write+0xf5/0x1e0 [ 37.294766][ T378] ? do_syscall_64+0xc6/0x1e0 [ 37.294922][ T378] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.295115][ T378] ? dev_get_by_index+0x177/0x270 [ 37.295268][ T378] netdev_get_by_index+0x5e/0x80 [ 37.295511][ T378] fib6_nh_init+0x3d8/0x15b0 [ 37.295670][ T378] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 37.295871][ T378] ? __pfx_fib6_nh_init+0x10/0x10 [ 37.296024][ T378] ? kasan_save_track+0x14/0x30 [ 37.296270][ T378] ? __kasan_kmalloc+0x7f/0x90 [ 37.296422][ T378] ? __kmalloc+0x1d7/0x3c0 [ 37.296575][ T378] ? fib6_get_table+0x116/0x290 [ 37.296729][ T378] ip6_route_info_create+0xf18/0x17d0 [ 37.296884][ T378] ? __lock_release+0x103/0x460 [ 37.297040][ T378] ? __pfx_ip6_route_info_create+0x10/0x10 [ 37.297238][ T378] ? addrconf_f6i_alloc+0x12d/0x560 [ 37.297392][ T378] addrconf_f6i_alloc+0x265/0x560 [ 37.297631][ T378] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 37.297786][ T378] ? do_raw_write_lock+0x122/0x3b0 [ 37.297941][ T378] ? __pfx_do_raw_write_lock+0x10/0x10 [ 37.298095][ T378] ? lock_acquire+0x32/0xc0 [ 37.298251][ T378] __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.298494][ T378] addrconf_join_anycast+0x1c0/0x220 [ 37.298649][ T378] ? mark_lock+0x38/0x3e0 [ 37.298766][ T378] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 37.298969][ T378] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 37.299251][ T378] dev_forward_change+0x2a6/0x7b0 [ 37.299408][ T378] ? __pfx_dev_forward_change+0x10/0x10 [ 37.299568][ T378] addrconf_fixup_forwarding+0x23f/0x460 [ 37.299727][ T378] addrconf_sysctl_forward+0x212/0x2b0 [ 37.299888][ T378] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 37.300083][ T378] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 37.300274][ T378] ? trace_kmalloc+0x2a/0xe0 [ 37.300430][ T378] ? __kmalloc_node+0x220/0x400 [ 37.300664][ T378] ? proc_sys_call_handler+0x30b/0x5e0 [ 37.300827][ T378] proc_sys_call_handler+0x403/0x5e0 [ 37.300982][ T378] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 37.301184][ T378] ? __lock_acquire+0xaf0/0x1570 [ 37.301420][ T378] vfs_write+0x9e5/0x10a0 [ 37.301556][ T378] ? do_user_addr_fault+0x449/0xbe0 [ 37.301710][ T378] ? __pfx_vfs_write+0x10/0x10 [ 37.301862][ T378] ? find_held_lock+0x2c/0x110 [ 37.302106][ T378] ? __pfx___lock_release+0x10/0x10 [ 37.302257][ T378] ? __fget_light+0x53/0x1e0 [ 37.302419][ T378] ksys_write+0xf5/0x1e0 [ 37.302536][ T378] ? __pfx_ksys_write+0x10/0x10 [ 37.302692][ T378] ? do_user_addr_fault+0x4bd/0xbe0 [ 37.302926][ T378] do_syscall_64+0xc6/0x1e0 [ 37.303087][ T378] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.303274][ T378] RIP: 0033:0x7f0fb3d9c957 [ 37.303432][ T378] 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 [ 37.304075][ T378] RSP: 002b:00007ffdaa5fd2d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 37.304390][ T378] RAX: ffffffffffffffda RBX: 0000557d3b081360 RCX: 00007f0fb3d9c957 [ 37.304630][ T378] RDX: 0000000000000002 RSI: 0000557d3b0813a0 RDI: 0000000000000005 [ 37.304888][ T378] RBP: 0000557d3b0834d0 R08: 0000000000000003 R09: 0000000000000077 [ 37.305301][ T378] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 37.305533][ T378] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f0fb3e539c0 [ 37.305766][ T378]