[ 30.390314][ T311] gre: GRE over IPv4 demultiplexor driver [ 30.439522][ T311] ip6_gre: GRE over IPv6 tunneling driver [ 30.730992][ T316] ip (316) used greatest stack depth: 23232 bytes left [ 32.582800][ T332] 8021q: 802.1Q VLAN Support v1.8 [ 36.575879][ T370] GACT probability NOT on [ 40.081301][ T403] [ 40.081433][ T403] ===================================================== [ 40.081636][ T403] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.081869][ T403] 6.9.0-rc1-virtme #1 Not tainted [ 40.082023][ T403] ----------------------------------------------------- [ 40.082218][ T403] sysctl/403 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.082443][ T403] ffff8880053c0968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.082724][ T403] [ 40.082724][ T403] and this task is already holding: [ 40.082950][ T403] ffff88800625d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.083225][ T403] which would create a new lock dependency: [ 40.083415][ T403] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.083649][ T403] [ 40.083649][ T403] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.083908][ T403] (&ndev->lock){++--}-{2:2} [ 40.083911][ T403] [ 40.083911][ T403] ... which became SOFTIRQ-irq-safe at: [ 40.084280][ T403] __lock_acquire+0x797/0x1570 [ 40.084441][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.084593][ T403] _raw_write_lock+0x30/0x40 [ 40.084751][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.084904][ T403] call_timer_fn+0x13b/0x230 [ 40.085062][ T403] __run_timers+0x545/0x810 [ 40.085214][ T403] timer_expire_remote+0x9b/0xe0 [ 40.085366][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.085516][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.085672][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.085825][ T403] __do_softirq+0x1f8/0x5df [ 40.085983][ T403] irq_exit_rcu+0x97/0xc0 [ 40.086136][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.086293][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.086485][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.086639][ T403] get_partial_node.part.0+0x1c5/0x3a0 [ 40.086791][ T403] ___slab_alloc+0xb70/0x10a0 [ 40.086945][ T403] __kmem_cache_alloc_bulk+0x1be/0x630 [ 40.087095][ T403] kmem_cache_alloc_bulk+0x97/0x180 [ 40.087252][ T403] mas_alloc_nodes+0x2e6/0x820 [ 40.087407][ T403] mas_preallocate+0x356/0x8b0 [ 40.087562][ T403] __split_vma+0x2bd/0xd10 [ 40.087714][ T403] do_vmi_align_munmap.constprop.0+0x2c0/0x10a0 [ 40.087902][ T403] mmap_region+0x15c/0x2110 [ 40.088052][ T403] do_mmap+0x622/0xc70 [ 40.088167][ T403] vm_mmap_pgoff+0x113/0x2f0 [ 40.088318][ T403] ksys_mmap_pgoff+0x290/0x410 [ 40.088470][ T403] do_syscall_64+0xc6/0x1e0 [ 40.088623][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.088812][ T403] [ 40.088812][ T403] to a SOFTIRQ-irq-unsafe lock: [ 40.088998][ T403] (&p->alloc_lock){+.+.}-{2:2} [ 40.089002][ T403] [ 40.089002][ T403] ... which became SOFTIRQ-irq-unsafe at: [ 40.089365][ T403] ... [ 40.089366][ T403] __lock_acquire+0x797/0x1570 [ 40.089597][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.089755][ T403] _raw_spin_lock+0x30/0x40 [ 40.089904][ T403] set_mems_allowed+0x1d/0x210 [ 40.090056][ T403] kernel_init_freeable+0x72/0x310 [ 40.090208][ T403] kernel_init+0x20/0x200 [ 40.090361][ T403] ret_from_fork+0x31/0x70 [ 40.090516][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.090671][ T403] [ 40.090671][ T403] other info that might help us debug this: [ 40.090671][ T403] [ 40.090982][ T403] Possible interrupt unsafe locking scenario: [ 40.090982][ T403] [ 40.091206][ T403] CPU0 CPU1 [ 40.091358][ T403] ---- ---- [ 40.091512][ T403] lock(&p->alloc_lock); [ 40.091628][ T403] local_irq_disable(); [ 40.091814][ T403] lock(&ndev->lock); [ 40.092004][ T403] lock(&p->alloc_lock); [ 40.092200][ T403] [ 40.092318][ T403] lock(&ndev->lock); [ 40.092435][ T403] [ 40.092435][ T403] *** DEADLOCK *** [ 40.092435][ T403] [ 40.092658][ T403] 3 locks held by sysctl/403: [ 40.092812][ T403] #0: ffff888005f343f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.093090][ T403] #1: ffffffff9c5969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.093404][ T403] #2: ffff88800625d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.093673][ T403] [ 40.093673][ T403] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.093969][ T403] -> (&ndev->lock){++--}-{2:2} { [ 40.094128][ T403] HARDIRQ-ON-W at: [ 40.094245][ T403] __lock_acquire+0x797/0x1570 [ 40.094436][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.094632][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.094828][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.095023][ T403] addrconf_notify+0x749/0xd60 [ 40.095215][ T403] notifier_call_chain+0xcd/0x150 [ 40.095412][ T403] __dev_notify_flags+0xe6/0x250 [ 40.095609][ T403] dev_change_flags+0xec/0x160 [ 40.095799][ T403] do_setlink+0x7d6/0x21e0 [ 40.095993][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.096183][ T403] rtnl_newlink+0x63/0xa0 [ 40.096377][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.096568][ T403] netlink_rcv_skb+0x130/0x360 [ 40.096762][ T403] netlink_unicast+0x449/0x710 [ 40.096959][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.097150][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.097344][ T403] ___sys_sendmsg+0xee/0x170 [ 40.097539][ T403] __sys_sendmsg+0xcd/0x170 [ 40.097734][ T403] do_syscall_64+0xc6/0x1e0 [ 40.097925][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.098153][ T403] HARDIRQ-ON-R at: [ 40.098272][ T403] __lock_acquire+0x797/0x1570 [ 40.098463][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.098655][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.098851][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.099043][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.099234][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.099429][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.099617][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.099846][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.100040][ T403] register_netdevice+0x1177/0x1690 [ 40.100230][ T403] register_netdev+0x20/0x40 [ 40.100420][ T403] sit_init_net+0x250/0x4f0 [ 40.100618][ T403] ops_init+0x9b/0x560 [ 40.100781][ T403] register_pernet_operations+0x2db/0x710 [ 40.101012][ T403] register_pernet_device+0x2a/0x60 [ 40.101217][ T403] sit_init+0x23/0xe0 [ 40.101374][ T403] do_one_initcall+0x8d/0x1e0 [ 40.101567][ T403] do_initcalls+0x1b2/0x3e0 [ 40.101760][ T403] kernel_init_freeable+0x232/0x310 [ 40.101956][ T403] kernel_init+0x20/0x200 [ 40.102151][ T403] ret_from_fork+0x31/0x70 [ 40.102346][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.102538][ T403] IN-SOFTIRQ-W at: [ 40.102655][ T403] __lock_acquire+0x797/0x1570 [ 40.102846][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.103039][ T403] _raw_write_lock+0x30/0x40 [ 40.103235][ T403] addrconf_rs_timer+0xa9/0x730 [ 40.103430][ T403] call_timer_fn+0x13b/0x230 [ 40.103625][ T403] __run_timers+0x545/0x810 [ 40.103816][ T403] timer_expire_remote+0x9b/0xe0 [ 40.104011][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.104206][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.104403][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.104597][ T403] __do_softirq+0x1f8/0x5df [ 40.104786][ T403] irq_exit_rcu+0x97/0xc0 [ 40.104980][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.105209][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.105436][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.105668][ T403] get_partial_node.part.0+0x1c5/0x3a0 [ 40.105864][ T403] ___slab_alloc+0xb70/0x10a0 [ 40.106054][ T403] __kmem_cache_alloc_bulk+0x1be/0x630 [ 40.106246][ T403] kmem_cache_alloc_bulk+0x97/0x180 [ 40.106437][ T403] mas_alloc_nodes+0x2e6/0x820 [ 40.106718][ T403] mas_preallocate+0x356/0x8b0 [ 40.106914][ T403] __split_vma+0x2bd/0xd10 [ 40.107109][ T403] do_vmi_align_munmap.constprop.0+0x2c0/0x10a0 [ 40.107422][ T403] mmap_region+0x15c/0x2110 [ 40.107612][ T403] do_mmap+0x622/0xc70 [ 40.107764][ T403] vm_mmap_pgoff+0x113/0x2f0 [ 40.107960][ T403] ksys_mmap_pgoff+0x290/0x410 [ 40.108242][ T403] do_syscall_64+0xc6/0x1e0 [ 40.108433][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.108665][ T403] IN-SOFTIRQ-R at: [ 40.108862][ T403] __lock_acquire+0x797/0x1570 [ 40.109052][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.109243][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.109434][ T403] ipv6_get_lladdr+0xa9/0x3e0 [ 40.109708][ T403] addrconf_rs_timer+0x24a/0x730 [ 40.109899][ T403] call_timer_fn+0x13b/0x230 [ 40.110091][ T403] __run_timers+0x545/0x810 [ 40.110368][ T403] timer_expire_remote+0x9b/0xe0 [ 40.110561][ T403] tmigr_handle_remote_cpu+0x270/0x430 [ 40.110761][ T403] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.110958][ T403] tmigr_handle_remote+0x21d/0x3a0 [ 40.111229][ T403] __do_softirq+0x1f8/0x5df [ 40.111418][ T403] irq_exit_rcu+0x97/0xc0 [ 40.111607][ T403] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.112002][ T403] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.112231][ T403] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.112466][ T403] get_partial_node.part.0+0x1c5/0x3a0 [ 40.112742][ T403] ___slab_alloc+0xb70/0x10a0 [ 40.112935][ T403] __kmem_cache_alloc_bulk+0x1be/0x630 [ 40.113131][ T403] kmem_cache_alloc_bulk+0x97/0x180 [ 40.113405][ T403] mas_alloc_nodes+0x2e6/0x820 [ 40.113597][ T403] mas_preallocate+0x356/0x8b0 [ 40.113791][ T403] __split_vma+0x2bd/0xd10 [ 40.113984][ T403] do_vmi_align_munmap.constprop.0+0x2c0/0x10a0 [ 40.114295][ T403] mmap_region+0x15c/0x2110 [ 40.114484][ T403] do_mmap+0x622/0xc70 [ 40.114637][ T403] vm_mmap_pgoff+0x113/0x2f0 [ 40.114911][ T403] ksys_mmap_pgoff+0x290/0x410 [ 40.115104][ T403] do_syscall_64+0xc6/0x1e0 [ 40.115297][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.115609][ T403] INITIAL USE at: [ 40.115722][ T403] __lock_acquire+0x797/0x1570 [ 40.115916][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.116108][ T403] _raw_write_lock_bh+0x38/0x50 [ 40.116380][ T403] addrconf_permanent_addr+0x6e/0x670 [ 40.116574][ T403] addrconf_notify+0x749/0xd60 [ 40.116768][ T403] notifier_call_chain+0xcd/0x150 [ 40.117043][ T403] __dev_notify_flags+0xe6/0x250 [ 40.117239][ T403] dev_change_flags+0xec/0x160 [ 40.117429][ T403] do_setlink+0x7d6/0x21e0 [ 40.117622][ T403] __rtnl_newlink+0xaa7/0xd80 [ 40.117899][ T403] rtnl_newlink+0x63/0xa0 [ 40.118094][ T403] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.118284][ T403] netlink_rcv_skb+0x130/0x360 [ 40.118561][ T403] netlink_unicast+0x449/0x710 [ 40.118757][ T403] netlink_sendmsg+0x723/0xbe0 [ 40.118947][ T403] ____sys_sendmsg+0x7b2/0xa10 [ 40.119141][ T403] ___sys_sendmsg+0xee/0x170 [ 40.119412][ T403] __sys_sendmsg+0xcd/0x170 [ 40.119611][ T403] do_syscall_64+0xc6/0x1e0 [ 40.119800][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.120111][ T403] INITIAL READ USE at: [ 40.120229][ T403] __lock_acquire+0x797/0x1570 [ 40.120422][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.120615][ T403] _raw_read_lock_bh+0x44/0x80 [ 40.120902][ T403] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.121134][ T403] inet6_fill_link_af+0x5e/0xe0 [ 40.121327][ T403] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.121601][ T403] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.121830][ T403] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.122060][ T403] rtmsg_ifinfo+0x5b/0xa0 [ 40.122341][ T403] register_netdevice+0x1177/0x1690 [ 40.122571][ T403] register_netdev+0x20/0x40 [ 40.122768][ T403] sit_init_net+0x250/0x4f0 [ 40.123044][ T403] ops_init+0x9b/0x560 [ 40.123238][ T403] register_pernet_operations+0x2db/0x710 [ 40.123469][ T403] register_pernet_device+0x2a/0x60 [ 40.123868][ T403] sit_init+0x23/0xe0 [ 40.124062][ T403] do_one_initcall+0x8d/0x1e0 [ 40.124256][ T403] do_initcalls+0x1b2/0x3e0 [ 40.124541][ T403] kernel_init_freeable+0x232/0x310 [ 40.124765][ T403] kernel_init+0x20/0x200 [ 40.124955][ T403] ret_from_fork+0x31/0x70 [ 40.125151][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.125421][ T403] } [ 40.125503][ T403] ... key at: [] __key.37+0x0/0x40 [ 40.125729][ T403] [ 40.125729][ T403] the dependencies between the lock to be acquired [ 40.125731][ T403] and SOFTIRQ-irq-unsafe lock: [ 40.126212][ T403] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.126373][ T403] HARDIRQ-ON-W at: [ 40.126504][ T403] __lock_acquire+0x797/0x1570 [ 40.126777][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.126967][ T403] _raw_spin_lock+0x30/0x40 [ 40.127155][ T403] set_mems_allowed+0x1d/0x210 [ 40.127342][ T403] kernel_init_freeable+0x72/0x310 [ 40.127613][ T403] kernel_init+0x20/0x200 [ 40.127806][ T403] ret_from_fork+0x31/0x70 [ 40.127994][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.128261][ T403] SOFTIRQ-ON-W at: [ 40.128375][ T403] __lock_acquire+0x797/0x1570 [ 40.128567][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.128760][ T403] _raw_spin_lock+0x30/0x40 [ 40.129031][ T403] set_mems_allowed+0x1d/0x210 [ 40.129224][ T403] kernel_init_freeable+0x72/0x310 [ 40.129412][ T403] kernel_init+0x20/0x200 [ 40.129686][ T403] ret_from_fork+0x31/0x70 [ 40.129879][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.130067][ T403] INITIAL USE at: [ 40.130179][ T403] __lock_acquire+0x797/0x1570 [ 40.130449][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.130644][ T403] _raw_spin_lock+0x30/0x40 [ 40.130845][ T403] set_mems_allowed+0x1d/0x210 [ 40.131119][ T403] kernel_init_freeable+0x72/0x310 [ 40.131314][ T403] kernel_init+0x20/0x200 [ 40.131501][ T403] ret_from_fork+0x31/0x70 [ 40.131688][ T403] ret_from_fork_asm+0x1a/0x30 [ 40.131963][ T403] } [ 40.132045][ T403] ... key at: [] __key.387+0x0/0x40 [ 40.132275][ T403] ... acquired at: [ 40.132388][ T403] check_prev_add+0x194/0xce0 [ 40.132622][ T403] validate_chain+0x71d/0x9b0 [ 40.132772][ T403] __lock_acquire+0xaf0/0x1570 [ 40.132921][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.133075][ T403] _raw_spin_lock+0x30/0x40 [ 40.133304][ T403] __get_task_comm+0x27/0x70 [ 40.133458][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.133611][ T403] netdev_get_by_index+0x5e/0x80 [ 40.133762][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.133913][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.134147][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.134298][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.134449][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.134598][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.134835][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.135023][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.135176][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.135328][ T403] vfs_write+0x9e5/0x10a0 [ 40.135637][ T403] ksys_write+0xf5/0x1e0 [ 40.135786][ T403] do_syscall_64+0xc6/0x1e0 [ 40.135936][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.136127][ T403] [ 40.136286][ T403] [ 40.136286][ T403] stack backtrace: [ 40.136470][ T403] CPU: 3 PID: 403 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.136696][ T403] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.137116][ T403] Call Trace: [ 40.137231][ T403] [ 40.137312][ T403] dump_stack_lvl+0x82/0xd0 [ 40.137468][ T403] print_bad_irq_dependency+0x957/0xd40 [ 40.137624][ T403] ? hlock_class+0x4e/0x130 [ 40.137867][ T403] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.138055][ T403] ? __pfx_usage_skip+0x10/0x10 [ 40.138204][ T403] ? __bfs+0x246/0x650 [ 40.138316][ T403] ? __pfx_usage_match+0x10/0x10 [ 40.138553][ T403] check_irq_usage+0x596/0x850 [ 40.138703][ T403] ? __pfx_check_irq_usage+0x10/0x10 [ 40.138852][ T403] ? __bfs+0x246/0x650 [ 40.138972][ T403] ? __pfx_hlock_conflict+0x10/0x10 [ 40.139205][ T403] ? check_path.constprop.0+0x24/0x50 [ 40.139355][ T403] ? check_noncircular+0x14c/0x3e0 [ 40.139508][ T403] ? __pfx_check_noncircular+0x10/0x10 [ 40.139661][ T403] ? check_prev_add+0x194/0xce0 [ 40.139811][ T403] check_prev_add+0x194/0xce0 [ 40.140043][ T403] ? validate_chain+0x130/0x9b0 [ 40.140195][ T403] validate_chain+0x71d/0x9b0 [ 40.140351][ T403] ? mark_lock+0x38/0x3e0 [ 40.140465][ T403] ? __pfx_validate_chain+0x10/0x10 [ 40.140704][ T403] ? hlock_class+0x4e/0x130 [ 40.140853][ T403] ? mark_lock+0x38/0x3e0 [ 40.140968][ T403] __lock_acquire+0xaf0/0x1570 [ 40.141120][ T403] lock_acquire.part.0+0xeb/0x330 [ 40.141271][ T403] ? __get_task_comm+0x27/0x70 [ 40.141501][ T403] ? mark_lock+0x38/0x3e0 [ 40.141617][ T403] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.141772][ T403] ? trace_lock_acquire+0x135/0x1c0 [ 40.141923][ T403] ? __get_task_comm+0x27/0x70 [ 40.142154][ T403] ? lock_acquire+0x32/0xc0 [ 40.142304][ T403] ? __get_task_comm+0x27/0x70 [ 40.142453][ T403] _raw_spin_lock+0x30/0x40 [ 40.142603][ T403] ? __get_task_comm+0x27/0x70 [ 40.142836][ T403] __get_task_comm+0x27/0x70 [ 40.142985][ T403] ref_tracker_alloc+0x2ee/0x490 [ 40.143136][ T403] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.143289][ T403] ? dev_get_by_index+0x177/0x270 [ 40.143438][ T403] ? netdev_get_by_index+0x5e/0x80 [ 40.143670][ T403] ? fib6_nh_init+0x3d8/0x15b0 [ 40.143824][ T403] ? ip6_route_info_create+0xf18/0x17d0 [ 40.143973][ T403] ? addrconf_f6i_alloc+0x265/0x560 [ 40.144121][ T403] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.144354][ T403] ? addrconf_join_anycast+0x1c0/0x220 [ 40.144508][ T403] ? dev_forward_change+0x2a6/0x7b0 [ 40.144658][ T403] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.144846][ T403] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.145074][ T403] ? proc_sys_call_handler+0x403/0x5e0 [ 40.145224][ T403] ? vfs_write+0x9e5/0x10a0 [ 40.145373][ T403] ? ksys_write+0xf5/0x1e0 [ 40.145522][ T403] ? do_syscall_64+0xc6/0x1e0 [ 40.145750][ T403] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.145944][ T403] ? dev_get_by_index+0x177/0x270 [ 40.146095][ T403] netdev_get_by_index+0x5e/0x80 [ 40.146251][ T403] fib6_nh_init+0x3d8/0x15b0 [ 40.146480][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.146668][ T403] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.146818][ T403] ? kasan_save_track+0x14/0x30 [ 40.146971][ T403] ? __kasan_kmalloc+0x7f/0x90 [ 40.147282][ T403] ? __kmalloc+0x1d7/0x3c0 [ 40.147438][ T403] ? fib6_get_table+0x116/0x290 [ 40.147588][ T403] ip6_route_info_create+0xf18/0x17d0 [ 40.147738][ T403] ? __lock_release+0x103/0x460 [ 40.147971][ T403] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.148160][ T403] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.148309][ T403] addrconf_f6i_alloc+0x265/0x560 [ 40.148459][ T403] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.148692][ T403] ? do_raw_write_lock+0x122/0x3b0 [ 40.148846][ T403] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.148995][ T403] ? lock_acquire+0x32/0xc0 [ 40.149150][ T403] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.149301][ T403] addrconf_join_anycast+0x1c0/0x220 [ 40.149535][ T403] ? mark_lock+0x38/0x3e0 [ 40.149650][ T403] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.149838][ T403] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.150024][ T403] dev_forward_change+0x2a6/0x7b0 [ 40.150265][ T403] ? __pfx_dev_forward_change+0x10/0x10 [ 40.150417][ T403] addrconf_fixup_forwarding+0x23f/0x460 [ 40.150568][ T403] addrconf_sysctl_forward+0x212/0x2b0 [ 40.150729][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.150999][ T403] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.151186][ T403] ? trace_kmalloc+0x2a/0xe0 [ 40.151336][ T403] ? __kmalloc_node+0x220/0x400 [ 40.151490][ T403] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.151722][ T403] proc_sys_call_handler+0x403/0x5e0 [ 40.151873][ T403] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.152059][ T403] ? __lock_acquire+0xaf0/0x1570 [ 40.152212][ T403] vfs_write+0x9e5/0x10a0 [ 40.152409][ T403] ? do_user_addr_fault+0x449/0xbe0 [ 40.152559][ T403] ? __pfx_vfs_write+0x10/0x10 [ 40.152708][ T403] ? find_held_lock+0x2c/0x110 [ 40.152862][ T403] ? __pfx___lock_release+0x10/0x10 [ 40.153094][ T403] ? __fget_light+0x53/0x1e0 [ 40.153247][ T403] ksys_write+0xf5/0x1e0 [ 40.153359][ T403] ? __pfx_ksys_write+0x10/0x10 [ 40.153513][ T403] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.153663][ T403] do_syscall_64+0xc6/0x1e0 [ 40.153893][ T403] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.154077][ T403] RIP: 0033:0x7f948370b957 [ 40.154236][ T403] 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 [ 40.154862][ T403] RSP: 002b:00007fff0932b178 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.155090][ T403] RAX: ffffffffffffffda RBX: 000055c818ca5360 RCX: 00007f948370b957 [ 40.155398][ T403] RDX: 0000000000000002 RSI: 000055c818ca53a0 RDI: 0000000000000005 [ 40.155633][ T403] RBP: 000055c818ca74d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.155860][ T403] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.156172][ T403] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f94837c29c0 [ 40.156397][ T403]