[ 24.114525][ T235] ip (235) used greatest stack depth: 23552 bytes left [ 28.876584][ T293] 8021q: 802.1Q VLAN Support v1.8 [ 29.912788][ T304] gre: GRE over IPv4 demultiplexor driver [ 29.928299][ T304] ip_gre: GRE over IPv4 tunneling driver [ 35.724934][ T361] GACT probability NOT on [ 37.121258][ T375] [ 37.121364][ T375] ===================================================== [ 37.121537][ T375] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 37.121739][ T375] 6.9.0-rc1-virtme #1 Not tainted [ 37.121879][ T375] ----------------------------------------------------- [ 37.122052][ T375] sysctl/375 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 37.122256][ T375] ffff88800540cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 37.122510][ T375] [ 37.122510][ T375] and this task is already holding: [ 37.122709][ T375] ffff88800791d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 37.122954][ T375] which would create a new lock dependency: [ 37.123121][ T375] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 37.123332][ T375] [ 37.123332][ T375] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 37.123564][ T375] (&ndev->lock){++--}-{2:2} [ 37.123567][ T375] [ 37.123567][ T375] ... which became SOFTIRQ-irq-safe at: [ 37.123894][ T375] __lock_acquire+0x797/0x1570 [ 37.124034][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.124171][ T375] _raw_write_lock+0x30/0x40 [ 37.124314][ T375] addrconf_rs_timer+0xa9/0x730 [ 37.124451][ T375] call_timer_fn+0x13b/0x230 [ 37.124588][ T375] __run_timers+0x545/0x810 [ 37.124727][ T375] timer_expire_remote+0x9b/0xe0 [ 37.124867][ T375] tmigr_handle_remote_cpu+0x270/0x430 [ 37.125004][ T375] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.125137][ T375] tmigr_handle_remote+0x21d/0x3a0 [ 37.125273][ T375] __do_softirq+0x1f8/0x5df [ 37.125418][ T375] irq_exit_rcu+0x97/0xc0 [ 37.125559][ T375] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.125694][ T375] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.125881][ T375] default_idle+0xf/0x20 [ 37.125989][ T375] default_idle_call+0x6d/0xb0 [ 37.126124][ T375] cpuidle_idle_call+0x1f4/0x280 [ 37.126265][ T375] do_idle+0xf9/0x160 [ 37.126371][ T375] cpu_startup_entry+0x54/0x60 [ 37.126508][ T375] start_secondary+0x21c/0x2b0 [ 37.126654][ T375] common_startup_64+0x12c/0x138 [ 37.126789][ T375] [ 37.126789][ T375] to a SOFTIRQ-irq-unsafe lock: [ 37.126963][ T375] (&p->alloc_lock){+.+.}-{2:2} [ 37.126967][ T375] [ 37.126967][ T375] ... which became SOFTIRQ-irq-unsafe at: [ 37.127299][ T375] ... [ 37.127301][ T375] __lock_acquire+0x797/0x1570 [ 37.127505][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.127641][ T375] _raw_spin_lock+0x30/0x40 [ 37.127779][ T375] set_mems_allowed+0x1d/0x210 [ 37.127922][ T375] kernel_init_freeable+0x72/0x310 [ 37.128059][ T375] kernel_init+0x20/0x200 [ 37.128195][ T375] ret_from_fork+0x31/0x70 [ 37.128339][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.128476][ T375] [ 37.128476][ T375] other info that might help us debug this: [ 37.128476][ T375] [ 37.128742][ T375] Possible interrupt unsafe locking scenario: [ 37.128742][ T375] [ 37.128952][ T375] CPU0 CPU1 [ 37.129088][ T375] ---- ---- [ 37.129223][ T375] lock(&p->alloc_lock); [ 37.129334][ T375] local_irq_disable(); [ 37.129503][ T375] lock(&ndev->lock); [ 37.129676][ T375] lock(&p->alloc_lock); [ 37.129851][ T375] [ 37.129959][ T375] lock(&ndev->lock); [ 37.130065][ T375] [ 37.130065][ T375] *** DEADLOCK *** [ 37.130065][ T375] [ 37.130268][ T375] 3 locks held by sysctl/375: [ 37.130404][ T375] #0: ffff8880060dc3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 37.130665][ T375] #1: ffffffffa49969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 37.130945][ T375] #2: ffff88800791d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 37.131191][ T375] [ 37.131191][ T375] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 37.131460][ T375] -> (&ndev->lock){++--}-{2:2} { [ 37.131601][ T375] HARDIRQ-ON-W at: [ 37.131711][ T375] __lock_acquire+0x797/0x1570 [ 37.131889][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.132069][ T375] _raw_write_lock_bh+0x38/0x50 [ 37.132249][ T375] addrconf_permanent_addr+0x6e/0x670 [ 37.132426][ T375] addrconf_notify+0x749/0xd60 [ 37.132599][ T375] notifier_call_chain+0xcd/0x150 [ 37.132778][ T375] __dev_notify_flags+0xe6/0x250 [ 37.132950][ T375] dev_change_flags+0xec/0x160 [ 37.133132][ T375] do_setlink+0x7d6/0x21e0 [ 37.133311][ T375] __rtnl_newlink+0xaa7/0xd80 [ 37.133483][ T375] rtnl_newlink+0x63/0xa0 [ 37.133663][ T375] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 37.133834][ T375] netlink_rcv_skb+0x130/0x360 [ 37.134014][ T375] netlink_unicast+0x449/0x710 [ 37.134196][ T375] netlink_sendmsg+0x723/0xbe0 [ 37.134371][ T375] ____sys_sendmsg+0x7b2/0xa10 [ 37.134552][ T375] ___sys_sendmsg+0xee/0x170 [ 37.134726][ T375] __sys_sendmsg+0xcd/0x170 [ 37.134903][ T375] do_syscall_64+0xc6/0x1e0 [ 37.135081][ T375] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.135308][ T375] HARDIRQ-ON-R at: [ 37.135413][ T375] __lock_acquire+0x797/0x1570 [ 37.135596][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.135769][ T375] _raw_read_lock_bh+0x44/0x80 [ 37.135943][ T375] inet6_fill_ifla6_attrs+0x516/0x740 [ 37.136117][ T375] inet6_fill_link_af+0x5e/0xe0 [ 37.136289][ T375] rtnl_fill_ifinfo+0x1612/0x29e0 [ 37.136461][ T375] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 37.136638][ T375] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 37.136842][ T375] rtmsg_ifinfo+0x5b/0xa0 [ 37.137016][ T375] register_netdevice+0x1177/0x1690 [ 37.137190][ T375] register_netdev+0x20/0x40 [ 37.137443][ T375] sit_init_net+0x250/0x4f0 [ 37.137618][ T375] ops_init+0x9b/0x560 [ 37.137759][ T375] register_pernet_operations+0x2db/0x710 [ 37.138047][ T375] register_pernet_device+0x2a/0x60 [ 37.138218][ T375] sit_init+0x23/0xe0 [ 37.138357][ T375] do_one_initcall+0x8d/0x1e0 [ 37.138534][ T375] do_initcalls+0x1b2/0x3e0 [ 37.138787][ T375] kernel_init_freeable+0x232/0x310 [ 37.138962][ T375] kernel_init+0x20/0x200 [ 37.139134][ T375] ret_from_fork+0x31/0x70 [ 37.139388][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.139558][ T375] IN-SOFTIRQ-W at: [ 37.139661][ T375] __lock_acquire+0x797/0x1570 [ 37.139831][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.140083][ T375] _raw_write_lock+0x30/0x40 [ 37.140264][ T375] addrconf_rs_timer+0xa9/0x730 [ 37.140434][ T375] call_timer_fn+0x13b/0x230 [ 37.140697][ T375] __run_timers+0x545/0x810 [ 37.140871][ T375] timer_expire_remote+0x9b/0xe0 [ 37.141044][ T375] tmigr_handle_remote_cpu+0x270/0x430 [ 37.141217][ T375] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.141473][ T375] tmigr_handle_remote+0x21d/0x3a0 [ 37.141646][ T375] __do_softirq+0x1f8/0x5df [ 37.141821][ T375] irq_exit_rcu+0x97/0xc0 [ 37.142171][ T375] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.142381][ T375] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.142593][ T375] default_idle+0xf/0x20 [ 37.142766][ T375] default_idle_call+0x6d/0xb0 [ 37.142941][ T375] cpuidle_idle_call+0x1f4/0x280 [ 37.143120][ T375] do_idle+0xf9/0x160 [ 37.143260][ T375] cpu_startup_entry+0x54/0x60 [ 37.143440][ T375] start_secondary+0x21c/0x2b0 [ 37.143613][ T375] common_startup_64+0x12c/0x138 [ 37.143792][ T375] IN-SOFTIRQ-R at: [ 37.143979][ T375] __lock_acquire+0x797/0x1570 [ 37.144158][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.144333][ T375] _raw_read_lock_bh+0x44/0x80 [ 37.144508][ T375] ipv6_get_lladdr+0xa9/0x3e0 [ 37.144761][ T375] addrconf_rs_timer+0x24a/0x730 [ 37.144941][ T375] call_timer_fn+0x13b/0x230 [ 37.145111][ T375] __run_timers+0x545/0x810 [ 37.145371][ T375] timer_expire_remote+0x9b/0xe0 [ 37.145544][ T375] tmigr_handle_remote_cpu+0x270/0x430 [ 37.145716][ T375] tmigr_handle_remote_up+0x19f/0x2e0 [ 37.145891][ T375] tmigr_handle_remote+0x21d/0x3a0 [ 37.146154][ T375] __do_softirq+0x1f8/0x5df [ 37.146323][ T375] irq_exit_rcu+0x97/0xc0 [ 37.146502][ T375] sysvec_apic_timer_interrupt+0x75/0x80 [ 37.146706][ T375] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 37.146909][ T375] default_idle+0xf/0x20 [ 37.147080][ T375] default_idle_call+0x6d/0xb0 [ 37.147251][ T375] cpuidle_idle_call+0x1f4/0x280 [ 37.147420][ T375] do_idle+0xf9/0x160 [ 37.147567][ T375] cpu_startup_entry+0x54/0x60 [ 37.147747][ T375] start_secondary+0x21c/0x2b0 [ 37.148009][ T375] common_startup_64+0x12c/0x138 [ 37.148179][ T375] INITIAL USE at: [ 37.148283][ T375] __lock_acquire+0x797/0x1570 [ 37.148534][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.148707][ T375] _raw_write_lock_bh+0x38/0x50 [ 37.148891][ T375] addrconf_permanent_addr+0x6e/0x670 [ 37.149060][ T375] addrconf_notify+0x749/0xd60 [ 37.149315][ T375] notifier_call_chain+0xcd/0x150 [ 37.149492][ T375] __dev_notify_flags+0xe6/0x250 [ 37.149663][ T375] dev_change_flags+0xec/0x160 [ 37.149921][ T375] do_setlink+0x7d6/0x21e0 [ 37.150099][ T375] __rtnl_newlink+0xaa7/0xd80 [ 37.150268][ T375] rtnl_newlink+0x63/0xa0 [ 37.150448][ T375] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 37.150715][ T375] netlink_rcv_skb+0x130/0x360 [ 37.150887][ T375] netlink_unicast+0x449/0x710 [ 37.151061][ T375] netlink_sendmsg+0x723/0xbe0 [ 37.151319][ T375] ____sys_sendmsg+0x7b2/0xa10 [ 37.151496][ T375] ___sys_sendmsg+0xee/0x170 [ 37.151676][ T375] __sys_sendmsg+0xcd/0x170 [ 37.151929][ T375] do_syscall_64+0xc6/0x1e0 [ 37.152103][ T375] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.152313][ T375] INITIAL READ USE at: [ 37.152416][ T375] __lock_acquire+0x797/0x1570 [ 37.152760][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.152939][ T375] _raw_read_lock_bh+0x44/0x80 [ 37.153116][ T375] inet6_fill_ifla6_attrs+0x516/0x740 [ 37.153408][ T375] inet6_fill_link_af+0x5e/0xe0 [ 37.153584][ T375] rtnl_fill_ifinfo+0x1612/0x29e0 [ 37.153755][ T375] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 37.154054][ T375] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 37.154266][ T375] rtmsg_ifinfo+0x5b/0xa0 [ 37.154442][ T375] register_netdevice+0x1177/0x1690 [ 37.154649][ T375] register_netdev+0x20/0x40 [ 37.154823][ T375] sit_init_net+0x250/0x4f0 [ 37.155000][ T375] ops_init+0x9b/0x560 [ 37.155177][ T375] register_pernet_operations+0x2db/0x710 [ 37.155389][ T375] register_pernet_device+0x2a/0x60 [ 37.155594][ T375] sit_init+0x23/0xe0 [ 37.155765][ T375] do_one_initcall+0x8d/0x1e0 [ 37.156019][ T375] do_initcalls+0x1b2/0x3e0 [ 37.156190][ T375] kernel_init_freeable+0x232/0x310 [ 37.156397][ T375] kernel_init+0x20/0x200 [ 37.156651][ T375] ret_from_fork+0x31/0x70 [ 37.156831][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.157004][ T375] } [ 37.157076][ T375] ... key at: [] __key.37+0x0/0x40 [ 37.157363][ T375] [ 37.157363][ T375] the dependencies between the lock to be acquired [ 37.157364][ T375] and SOFTIRQ-irq-unsafe lock: [ 37.157731][ T375] -> (&p->alloc_lock){+.+.}-{2:2} { [ 37.157954][ T375] HARDIRQ-ON-W at: [ 37.158059][ T375] __lock_acquire+0x797/0x1570 [ 37.158234][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.158405][ T375] _raw_spin_lock+0x30/0x40 [ 37.158659][ T375] set_mems_allowed+0x1d/0x210 [ 37.158833][ T375] kernel_init_freeable+0x72/0x310 [ 37.159007][ T375] kernel_init+0x20/0x200 [ 37.159261][ T375] ret_from_fork+0x31/0x70 [ 37.159434][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.159606][ T375] SOFTIRQ-ON-W at: [ 37.159709][ T375] __lock_acquire+0x797/0x1570 [ 37.159961][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.160135][ T375] _raw_spin_lock+0x30/0x40 [ 37.160308][ T375] set_mems_allowed+0x1d/0x210 [ 37.160484][ T375] kernel_init_freeable+0x72/0x310 [ 37.160750][ T375] kernel_init+0x20/0x200 [ 37.160924][ T375] ret_from_fork+0x31/0x70 [ 37.161094][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.161346][ T375] INITIAL USE at: [ 37.161454][ T375] __lock_acquire+0x797/0x1570 [ 37.161629][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.161799][ T375] _raw_spin_lock+0x30/0x40 [ 37.162055][ T375] set_mems_allowed+0x1d/0x210 [ 37.162231][ T375] kernel_init_freeable+0x72/0x310 [ 37.162402][ T375] kernel_init+0x20/0x200 [ 37.162655][ T375] ret_from_fork+0x31/0x70 [ 37.162827][ T375] ret_from_fork_asm+0x1a/0x30 [ 37.163000][ T375] } [ 37.163071][ T375] ... key at: [] __key.387+0x0/0x40 [ 37.163443][ T375] ... acquired at: [ 37.163553][ T375] check_prev_add+0x194/0xce0 [ 37.163689][ T375] validate_chain+0x71d/0x9b0 [ 37.163824][ T375] __lock_acquire+0xaf0/0x1570 [ 37.164044][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.164183][ T375] _raw_spin_lock+0x30/0x40 [ 37.164317][ T375] __get_task_comm+0x27/0x70 [ 37.164455][ T375] ref_tracker_alloc+0x2ee/0x490 [ 37.164592][ T375] netdev_get_by_index+0x5e/0x80 [ 37.164733][ T375] fib6_nh_init+0x3d8/0x15b0 [ 37.164871][ T375] ip6_route_info_create+0xf18/0x17d0 [ 37.165010][ T375] addrconf_f6i_alloc+0x265/0x560 [ 37.165150][ T375] __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.165377][ T375] addrconf_join_anycast+0x1c0/0x220 [ 37.165512][ T375] dev_forward_change+0x2a6/0x7b0 [ 37.165646][ T375] addrconf_fixup_forwarding+0x23f/0x460 [ 37.165821][ T375] addrconf_sysctl_forward+0x212/0x2b0 [ 37.166036][ T375] proc_sys_call_handler+0x403/0x5e0 [ 37.166172][ T375] vfs_write+0x9e5/0x10a0 [ 37.166317][ T375] ksys_write+0xf5/0x1e0 [ 37.166464][ T375] do_syscall_64+0xc6/0x1e0 [ 37.166682][ T375] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.166849][ T375] [ 37.166924][ T375] [ 37.166924][ T375] stack backtrace: [ 37.167089][ T375] CPU: 0 PID: 375 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 37.167379][ T375] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 37.167681][ T375] Call Trace: [ 37.167791][ T375] [ 37.167861][ T375] dump_stack_lvl+0x82/0xd0 [ 37.168083][ T375] print_bad_irq_dependency+0x957/0xd40 [ 37.168220][ T375] ? hlock_class+0x4e/0x130 [ 37.168362][ T375] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 37.168534][ T375] ? __pfx_usage_skip+0x10/0x10 [ 37.168748][ T375] ? __bfs+0x246/0x650 [ 37.168859][ T375] ? __pfx_usage_match+0x10/0x10 [ 37.168994][ T375] check_irq_usage+0x596/0x850 [ 37.169138][ T375] ? __pfx_check_irq_usage+0x10/0x10 [ 37.169356][ T375] ? __bfs+0x246/0x650 [ 37.169462][ T375] ? __pfx_hlock_conflict+0x10/0x10 [ 37.169598][ T375] ? check_path.constprop.0+0x24/0x50 [ 37.169738][ T375] ? check_noncircular+0x14c/0x3e0 [ 37.169875][ T375] ? __pfx_check_noncircular+0x10/0x10 [ 37.170099][ T375] ? check_prev_add+0x194/0xce0 [ 37.170234][ T375] check_prev_add+0x194/0xce0 [ 37.170378][ T375] ? validate_chain+0x130/0x9b0 [ 37.170554][ T375] validate_chain+0x71d/0x9b0 [ 37.170703][ T375] ? mark_lock+0x38/0x3e0 [ 37.170806][ T375] ? __pfx_validate_chain+0x10/0x10 [ 37.170940][ T375] ? hlock_class+0x4e/0x130 [ 37.171072][ T375] ? mark_lock+0x38/0x3e0 [ 37.171179][ T375] __lock_acquire+0xaf0/0x1570 [ 37.171398][ T375] lock_acquire.part.0+0xeb/0x330 [ 37.171532][ T375] ? __get_task_comm+0x27/0x70 [ 37.171673][ T375] ? mark_lock+0x38/0x3e0 [ 37.171777][ T375] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 37.171991][ T375] ? trace_lock_acquire+0x135/0x1c0 [ 37.172125][ T375] ? __get_task_comm+0x27/0x70 [ 37.172259][ T375] ? lock_acquire+0x32/0xc0 [ 37.172393][ T375] ? __get_task_comm+0x27/0x70 [ 37.172607][ T375] _raw_spin_lock+0x30/0x40 [ 37.172741][ T375] ? __get_task_comm+0x27/0x70 [ 37.172878][ T375] __get_task_comm+0x27/0x70 [ 37.173015][ T375] ref_tracker_alloc+0x2ee/0x490 [ 37.173154][ T375] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 37.173366][ T375] ? dev_get_by_index+0x177/0x270 [ 37.173500][ T375] ? netdev_get_by_index+0x5e/0x80 [ 37.173633][ T375] ? fib6_nh_init+0x3d8/0x15b0 [ 37.173767][ T375] ? ip6_route_info_create+0xf18/0x17d0 [ 37.174060][ T375] ? addrconf_f6i_alloc+0x265/0x560 [ 37.174199][ T375] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.174333][ T375] ? addrconf_join_anycast+0x1c0/0x220 [ 37.174467][ T375] ? dev_forward_change+0x2a6/0x7b0 [ 37.174602][ T375] ? addrconf_fixup_forwarding+0x23f/0x460 [ 37.174768][ T375] ? addrconf_sysctl_forward+0x212/0x2b0 [ 37.174903][ T375] ? proc_sys_call_handler+0x403/0x5e0 [ 37.175039][ T375] ? vfs_write+0x9e5/0x10a0 [ 37.175254][ T375] ? ksys_write+0xf5/0x1e0 [ 37.175391][ T375] ? do_syscall_64+0xc6/0x1e0 [ 37.175524][ T375] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.175690][ T375] ? dev_get_by_index+0x177/0x270 [ 37.175903][ T375] netdev_get_by_index+0x5e/0x80 [ 37.176040][ T375] fib6_nh_init+0x3d8/0x15b0 [ 37.176175][ T375] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 37.176341][ T375] ? __pfx_fib6_nh_init+0x10/0x10 [ 37.176556][ T375] ? kasan_save_track+0x14/0x30 [ 37.176695][ T375] ? __kasan_kmalloc+0x7f/0x90 [ 37.176830][ T375] ? __kmalloc+0x1d7/0x3c0 [ 37.176967][ T375] ? fib6_get_table+0x116/0x290 [ 37.177181][ T375] ip6_route_info_create+0xf18/0x17d0 [ 37.177314][ T375] ? __lock_release+0x103/0x460 [ 37.177450][ T375] ? __pfx_ip6_route_info_create+0x10/0x10 [ 37.177618][ T375] ? addrconf_f6i_alloc+0x12d/0x560 [ 37.177832][ T375] addrconf_f6i_alloc+0x265/0x560 [ 37.177973][ T375] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 37.178112][ T375] ? do_raw_write_lock+0x122/0x3b0 [ 37.178247][ T375] ? __pfx_do_raw_write_lock+0x10/0x10 [ 37.178381][ T375] ? lock_acquire+0x32/0xc0 [ 37.178597][ T375] __ipv6_dev_ac_inc+0x25f/0xb10 [ 37.178734][ T375] addrconf_join_anycast+0x1c0/0x220 [ 37.178867][ T375] ? mark_lock+0x38/0x3e0 [ 37.178972][ T375] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 37.179224][ T375] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 37.179392][ T375] dev_forward_change+0x2a6/0x7b0 [ 37.179527][ T375] ? __pfx_dev_forward_change+0x10/0x10 [ 37.179663][ T375] addrconf_fixup_forwarding+0x23f/0x460 [ 37.179879][ T375] addrconf_sysctl_forward+0x212/0x2b0 [ 37.180016][ T375] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 37.180184][ T375] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 37.180354][ T375] ? trace_kmalloc+0x2a/0xe0 [ 37.180567][ T375] ? __kmalloc_node+0x220/0x400 [ 37.180716][ T375] ? proc_sys_call_handler+0x30b/0x5e0 [ 37.180853][ T375] proc_sys_call_handler+0x403/0x5e0 [ 37.180988][ T375] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 37.181238][ T375] ? __lock_acquire+0xaf0/0x1570 [ 37.181374][ T375] vfs_write+0x9e5/0x10a0 [ 37.181476][ T375] ? do_user_addr_fault+0x449/0xbe0 [ 37.181615][ T375] ? __pfx_vfs_write+0x10/0x10 [ 37.181830][ T375] ? find_held_lock+0x2c/0x110 [ 37.181966][ T375] ? __pfx___lock_release+0x10/0x10 [ 37.182100][ T375] ? __fget_light+0x53/0x1e0 [ 37.182234][ T375] ksys_write+0xf5/0x1e0 [ 37.182336][ T375] ? __pfx_ksys_write+0x10/0x10 [ 37.182549][ T375] ? do_user_addr_fault+0x4bd/0xbe0 [ 37.182683][ T375] do_syscall_64+0xc6/0x1e0 [ 37.182820][ T375] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 37.182990][ T375] RIP: 0033:0x7f635f6e8957 [ 37.183215][ T375] 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 [ 37.183775][ T375] RSP: 002b:00007fff5470d4e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 37.183980][ T375] RAX: ffffffffffffffda RBX: 00005586d2b5d360 RCX: 00007f635f6e8957 [ 37.184183][ T375] RDX: 0000000000000002 RSI: 00005586d2b5d3a0 RDI: 0000000000000005 [ 37.184546][ T375] RBP: 00005586d2b5f4d0 R08: 0000000000000003 R09: 0000000000000077 [ 37.184747][ T375] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 37.184950][ T375] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f635f79f9c0 [ 37.185239][ T375]