[ 29.057289][ T295] 8021q: 802.1Q VLAN Support v1.8 [ 30.069165][ T306] gre: GRE over IPv4 demultiplexor driver [ 30.088286][ T306] ip_gre: GRE over IPv4 tunneling driver [ 30.432800][ T312] ip (312) used greatest stack depth: 23584 bytes left [ 36.733130][ T373] GACT probability NOT on [ 38.548703][ T389] [ 38.548922][ T389] ===================================================== [ 38.549173][ T389] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 38.549496][ T389] 6.9.0-rc1-virtme #1 Not tainted [ 38.549705][ T389] ----------------------------------------------------- [ 38.549979][ T389] sysctl/389 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 38.550223][ T389] ffff8880078f0968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 38.550497][ T389] [ 38.550497][ T389] and this task is already holding: [ 38.550745][ T389] ffff888012715580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.551136][ T389] which would create a new lock dependency: [ 38.551399][ T389] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 38.551727][ T389] [ 38.551727][ T389] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 38.552106][ T389] (&ndev->lock){++--}-{2:2} [ 38.552114][ T389] [ 38.552114][ T389] ... which became SOFTIRQ-irq-safe at: [ 38.552481][ T389] __lock_acquire+0x797/0x1570 [ 38.552643][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.552785][ T389] _raw_write_lock+0x30/0x40 [ 38.552925][ T389] addrconf_rs_timer+0xa9/0x730 [ 38.553065][ T389] call_timer_fn+0x13b/0x230 [ 38.553205][ T389] __run_timers+0x545/0x810 [ 38.553344][ T389] timer_expire_remote+0x9b/0xe0 [ 38.553482][ T389] tmigr_handle_remote_cpu+0x270/0x430 [ 38.553626][ T389] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.553851][ T389] tmigr_handle_remote+0x21d/0x3a0 [ 38.554068][ T389] __do_softirq+0x1f8/0x5df [ 38.554284][ T389] irq_exit_rcu+0x97/0xc0 [ 38.554502][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.554730][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.554925][ T389] unwind_next_frame+0x3fb/0x1d00 [ 38.555063][ T389] arch_stack_walk+0x8c/0xf0 [ 38.555204][ T389] stack_trace_save+0x94/0xd0 [ 38.555353][ T389] kasan_save_stack+0x24/0x50 [ 38.555497][ T389] __kasan_record_aux_stack+0x8e/0xa0 [ 38.555645][ T389] __call_rcu_common.constprop.0+0x9e/0x830 [ 38.555824][ T389] kmem_cache_free+0x1ac/0x220 [ 38.555968][ T389] __put_anon_vma+0xf4/0x320 [ 38.556112][ T389] unlink_anon_vmas+0x4ef/0x920 [ 38.556250][ T389] free_pgtables+0x290/0x7b0 [ 38.556392][ T389] exit_mmap+0x2d4/0x7d0 [ 38.556501][ T389] __mmput+0x76/0x3b0 [ 38.556616][ T389] exit_mm+0x146/0x1d0 [ 38.556733][ T389] do_exit+0x6b6/0xcf0 [ 38.556837][ T389] do_group_exit+0xb8/0x260 [ 38.556980][ T389] __x64_sys_exit_group+0x3e/0x50 [ 38.557119][ T389] do_syscall_64+0xc6/0x1e0 [ 38.557256][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.557429][ T389] [ 38.557429][ T389] to a SOFTIRQ-irq-unsafe lock: [ 38.557598][ T389] (&p->alloc_lock){+.+.}-{2:2} [ 38.557603][ T389] [ 38.557603][ T389] ... which became SOFTIRQ-irq-unsafe at: [ 38.558129][ T389] ... [ 38.558132][ T389] __lock_acquire+0x797/0x1570 [ 38.558466][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.558690][ T389] _raw_spin_lock+0x30/0x40 [ 38.558913][ T389] set_mems_allowed+0x1d/0x210 [ 38.559129][ T389] kernel_init_freeable+0x72/0x310 [ 38.559340][ T389] kernel_init+0x20/0x200 [ 38.559550][ T389] ret_from_fork+0x31/0x70 [ 38.559765][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.559977][ T389] [ 38.559977][ T389] other info that might help us debug this: [ 38.559977][ T389] [ 38.560382][ T389] Possible interrupt unsafe locking scenario: [ 38.560382][ T389] [ 38.560677][ T389] CPU0 CPU1 [ 38.560879][ T389] ---- ---- [ 38.561092][ T389] lock(&p->alloc_lock); [ 38.561258][ T389] local_irq_disable(); [ 38.561520][ T389] lock(&ndev->lock); [ 38.561768][ T389] lock(&p->alloc_lock); [ 38.562030][ T389] [ 38.562195][ T389] lock(&ndev->lock); [ 38.562322][ T389] [ 38.562322][ T389] *** DEADLOCK *** [ 38.562322][ T389] [ 38.562527][ T389] 3 locks held by sysctl/389: [ 38.562677][ T389] #0: ffff8880125c93f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 38.562933][ T389] #1: ffffffffa5d969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 38.563223][ T389] #2: ffff888012715580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.563477][ T389] [ 38.563477][ T389] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 38.563758][ T389] -> (&ndev->lock){++--}-{2:2} { [ 38.563904][ T389] HARDIRQ-ON-W at: [ 38.564010][ T389] __lock_acquire+0x797/0x1570 [ 38.564197][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.564374][ T389] _raw_write_lock_bh+0x38/0x50 [ 38.564570][ T389] addrconf_permanent_addr+0x6e/0x670 [ 38.564767][ T389] addrconf_notify+0x749/0xd60 [ 38.564943][ T389] notifier_call_chain+0xcd/0x150 [ 38.565117][ T389] __dev_notify_flags+0xe6/0x250 [ 38.565289][ T389] dev_change_flags+0xec/0x160 [ 38.565465][ T389] do_setlink+0x7d6/0x21e0 [ 38.565656][ T389] __rtnl_newlink+0xaa7/0xd80 [ 38.565832][ T389] rtnl_newlink+0x63/0xa0 [ 38.566013][ T389] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.566186][ T389] netlink_rcv_skb+0x130/0x360 [ 38.566359][ T389] netlink_unicast+0x449/0x710 [ 38.566534][ T389] netlink_sendmsg+0x723/0xbe0 [ 38.566723][ T389] ____sys_sendmsg+0x7b2/0xa10 [ 38.566903][ T389] ___sys_sendmsg+0xee/0x170 [ 38.567079][ T389] __sys_sendmsg+0xcd/0x170 [ 38.567266][ T389] do_syscall_64+0xc6/0x1e0 [ 38.567443][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.567664][ T389] HARDIRQ-ON-R at: [ 38.567773][ T389] __lock_acquire+0x797/0x1570 [ 38.567951][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.568126][ T389] _raw_read_lock_bh+0x44/0x80 [ 38.568309][ T389] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.568486][ T389] inet6_fill_link_af+0x5e/0xe0 [ 38.568665][ T389] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.568840][ T389] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.569017][ T389] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.569225][ T389] rtmsg_ifinfo+0x5b/0xa0 [ 38.569401][ T389] register_netdevice+0x1177/0x1690 [ 38.569578][ T389] register_netdev+0x20/0x40 [ 38.569760][ T389] sit_init_net+0x250/0x4f0 [ 38.569941][ T389] ops_init+0x9b/0x560 [ 38.570084][ T389] register_pernet_operations+0x2db/0x710 [ 38.570295][ T389] register_pernet_device+0x2a/0x60 [ 38.570472][ T389] sit_init+0x23/0xe0 [ 38.570623][ T389] do_one_initcall+0x8d/0x1e0 [ 38.570805][ T389] do_initcalls+0x1b2/0x3e0 [ 38.570983][ T389] kernel_init_freeable+0x232/0x310 [ 38.571156][ T389] kernel_init+0x20/0x200 [ 38.571329][ T389] ret_from_fork+0x31/0x70 [ 38.571509][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.571694][ T389] IN-SOFTIRQ-W at: [ 38.571800][ T389] __lock_acquire+0x797/0x1570 [ 38.571976][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.572153][ T389] _raw_write_lock+0x30/0x40 [ 38.572328][ T389] addrconf_rs_timer+0xa9/0x730 [ 38.572502][ T389] call_timer_fn+0x13b/0x230 [ 38.572689][ T389] __run_timers+0x545/0x810 [ 38.572870][ T389] timer_expire_remote+0x9b/0xe0 [ 38.573052][ T389] tmigr_handle_remote_cpu+0x270/0x430 [ 38.573230][ T389] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.573405][ T389] tmigr_handle_remote+0x21d/0x3a0 [ 38.573583][ T389] __do_softirq+0x1f8/0x5df [ 38.573763][ T389] irq_exit_rcu+0x97/0xc0 [ 38.573944][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.574156][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.574363][ T389] unwind_next_frame+0x3fb/0x1d00 [ 38.574544][ T389] arch_stack_walk+0x8c/0xf0 [ 38.574733][ T389] stack_trace_save+0x94/0xd0 [ 38.574909][ T389] kasan_save_stack+0x24/0x50 [ 38.575098][ T389] __kasan_record_aux_stack+0x8e/0xa0 [ 38.575275][ T389] __call_rcu_common.constprop.0+0x9e/0x830 [ 38.575484][ T389] kmem_cache_free+0x1ac/0x220 [ 38.575677][ T389] __put_anon_vma+0xf4/0x320 [ 38.575854][ T389] unlink_anon_vmas+0x4ef/0x920 [ 38.576027][ T389] free_pgtables+0x290/0x7b0 [ 38.576208][ T389] exit_mmap+0x2d4/0x7d0 [ 38.576385][ T389] __mmput+0x76/0x3b0 [ 38.576525][ T389] exit_mm+0x146/0x1d0 [ 38.576674][ T389] do_exit+0x6b6/0xcf0 [ 38.576812][ T389] do_group_exit+0xb8/0x260 [ 38.577077][ T389] __x64_sys_exit_group+0x3e/0x50 [ 38.577250][ T389] do_syscall_64+0xc6/0x1e0 [ 38.577432][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.577732][ T389] IN-SOFTIRQ-R at: [ 38.577836][ T389] __lock_acquire+0x797/0x1570 [ 38.578011][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.578187][ T389] _raw_read_lock_bh+0x44/0x80 [ 38.578449][ T389] ipv6_get_lladdr+0xa9/0x3e0 [ 38.578628][ T389] addrconf_rs_timer+0x24a/0x730 [ 38.578809][ T389] call_timer_fn+0x13b/0x230 [ 38.579068][ T389] __run_timers+0x545/0x810 [ 38.579242][ T389] timer_expire_remote+0x9b/0xe0 [ 38.579416][ T389] tmigr_handle_remote_cpu+0x270/0x430 [ 38.579589][ T389] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.579853][ T389] tmigr_handle_remote+0x21d/0x3a0 [ 38.580030][ T389] __do_softirq+0x1f8/0x5df [ 38.580205][ T389] irq_exit_rcu+0x97/0xc0 [ 38.580461][ T389] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.580676][ T389] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.580887][ T389] unwind_next_frame+0x3fb/0x1d00 [ 38.581143][ T389] arch_stack_walk+0x8c/0xf0 [ 38.581324][ T389] stack_trace_save+0x94/0xd0 [ 38.581501][ T389] kasan_save_stack+0x24/0x50 [ 38.581684][ T389] __kasan_record_aux_stack+0x8e/0xa0 [ 38.581943][ T389] __call_rcu_common.constprop.0+0x9e/0x830 [ 38.582149][ T389] kmem_cache_free+0x1ac/0x220 [ 38.582324][ T389] __put_anon_vma+0xf4/0x320 [ 38.582579][ T389] unlink_anon_vmas+0x4ef/0x920 [ 38.582833][ T389] free_pgtables+0x290/0x7b0 [ 38.583110][ T389] exit_mmap+0x2d4/0x7d0 [ 38.583543][ T389] __mmput+0x76/0x3b0 [ 38.583756][ T389] exit_mm+0x146/0x1d0 [ 38.583974][ T389] do_exit+0x6b6/0xcf0 [ 38.584186][ T389] do_group_exit+0xb8/0x260 [ 38.584620][ T389] __x64_sys_exit_group+0x3e/0x50 [ 38.584886][ T389] do_syscall_64+0xc6/0x1e0 [ 38.585080][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.585367][ T389] INITIAL USE at: [ 38.585471][ T389] __lock_acquire+0x797/0x1570 [ 38.585653][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.585825][ T389] _raw_write_lock_bh+0x38/0x50 [ 38.586168][ T389] addrconf_permanent_addr+0x6e/0x670 [ 38.586339][ T389] addrconf_notify+0x749/0xd60 [ 38.586510][ T389] notifier_call_chain+0xcd/0x150 [ 38.586692][ T389] __dev_notify_flags+0xe6/0x250 [ 38.586944][ T389] dev_change_flags+0xec/0x160 [ 38.587118][ T389] do_setlink+0x7d6/0x21e0 [ 38.587294][ T389] __rtnl_newlink+0xaa7/0xd80 [ 38.587556][ T389] rtnl_newlink+0x63/0xa0 [ 38.587752][ T389] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.587939][ T389] netlink_rcv_skb+0x130/0x360 [ 38.588208][ T389] netlink_unicast+0x449/0x710 [ 38.588392][ T389] netlink_sendmsg+0x723/0xbe0 [ 38.588577][ T389] ____sys_sendmsg+0x7b2/0xa10 [ 38.588771][ T389] ___sys_sendmsg+0xee/0x170 [ 38.589039][ T389] __sys_sendmsg+0xcd/0x170 [ 38.589229][ T389] do_syscall_64+0xc6/0x1e0 [ 38.589417][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.589727][ T389] INITIAL READ USE at: [ 38.589839][ T389] __lock_acquire+0x797/0x1570 [ 38.590028][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.590216][ T389] _raw_read_lock_bh+0x44/0x80 [ 38.590486][ T389] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.590720][ T389] inet6_fill_link_af+0x5e/0xe0 [ 38.590905][ T389] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.591174][ T389] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.591403][ T389] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.591629][ T389] rtmsg_ifinfo+0x5b/0xa0 [ 38.591895][ T389] register_netdevice+0x1177/0x1690 [ 38.592121][ T389] register_netdev+0x20/0x40 [ 38.592307][ T389] sit_init_net+0x250/0x4f0 [ 38.592578][ T389] ops_init+0x9b/0x560 [ 38.592774][ T389] register_pernet_operations+0x2db/0x710 [ 38.592997][ T389] register_pernet_device+0x2a/0x60 [ 38.593300][ T389] sit_init+0x23/0xe0 [ 38.593494][ T389] do_one_initcall+0x8d/0x1e0 [ 38.593689][ T389] do_initcalls+0x1b2/0x3e0 [ 38.593877][ T389] kernel_init_freeable+0x232/0x310 [ 38.594184][ T389] kernel_init+0x20/0x200 [ 38.594371][ T389] ret_from_fork+0x31/0x70 [ 38.594570][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.594840][ T389] } [ 38.594912][ T389] ... key at: [] __key.37+0x0/0x40 [ 38.595120][ T389] [ 38.595120][ T389] the dependencies between the lock to be acquired [ 38.595121][ T389] and SOFTIRQ-irq-unsafe lock: [ 38.595568][ T389] -> (&p->alloc_lock){+.+.}-{2:2} { [ 38.595719][ T389] HARDIRQ-ON-W at: [ 38.595823][ T389] __lock_acquire+0x797/0x1570 [ 38.596078][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.596248][ T389] _raw_spin_lock+0x30/0x40 [ 38.596421][ T389] set_mems_allowed+0x1d/0x210 [ 38.596597][ T389] kernel_init_freeable+0x72/0x310 [ 38.596858][ T389] kernel_init+0x20/0x200 [ 38.597030][ T389] ret_from_fork+0x31/0x70 [ 38.597203][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.597538][ T389] SOFTIRQ-ON-W at: [ 38.597647][ T389] __lock_acquire+0x797/0x1570 [ 38.597816][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.597989][ T389] _raw_spin_lock+0x30/0x40 [ 38.598241][ T389] set_mems_allowed+0x1d/0x210 [ 38.598410][ T389] kernel_init_freeable+0x72/0x310 [ 38.598583][ T389] kernel_init+0x20/0x200 [ 38.598948][ T389] ret_from_fork+0x31/0x70 [ 38.599119][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.599289][ T389] INITIAL USE at: [ 38.599394][ T389] __lock_acquire+0x797/0x1570 [ 38.599658][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.599828][ T389] _raw_spin_lock+0x30/0x40 [ 38.599999][ T389] set_mems_allowed+0x1d/0x210 [ 38.600168][ T389] kernel_init_freeable+0x72/0x310 [ 38.600417][ T389] kernel_init+0x20/0x200 [ 38.600590][ T389] ret_from_fork+0x31/0x70 [ 38.600773][ T389] ret_from_fork_asm+0x1a/0x30 [ 38.601026][ T389] } [ 38.601101][ T389] ... key at: [] __key.387+0x0/0x40 [ 38.601307][ T389] ... acquired at: [ 38.601410][ T389] check_prev_add+0x194/0xce0 [ 38.601638][ T389] validate_chain+0x71d/0x9b0 [ 38.601774][ T389] __lock_acquire+0xaf0/0x1570 [ 38.601910][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.602049][ T389] _raw_spin_lock+0x30/0x40 [ 38.602184][ T389] __get_task_comm+0x27/0x70 [ 38.602404][ T389] ref_tracker_alloc+0x2ee/0x490 [ 38.602547][ T389] netdev_get_by_index+0x5e/0x80 [ 38.602713][ T389] fib6_nh_init+0x3d8/0x15b0 [ 38.602851][ T389] ip6_route_info_create+0xf18/0x17d0 [ 38.603071][ T389] addrconf_f6i_alloc+0x265/0x560 [ 38.603208][ T389] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.603348][ T389] addrconf_join_anycast+0x1c0/0x220 [ 38.603487][ T389] dev_forward_change+0x2a6/0x7b0 [ 38.603709][ T389] addrconf_fixup_forwarding+0x23f/0x460 [ 38.603880][ T389] addrconf_sysctl_forward+0x212/0x2b0 [ 38.604036][ T389] proc_sys_call_handler+0x403/0x5e0 [ 38.604174][ T389] vfs_write+0x9e5/0x10a0 [ 38.604391][ T389] ksys_write+0xf5/0x1e0 [ 38.604531][ T389] do_syscall_64+0xc6/0x1e0 [ 38.604685][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.604853][ T389] [ 38.604924][ T389] [ 38.604924][ T389] stack backtrace: [ 38.605169][ T389] CPU: 2 PID: 389 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 38.605372][ T389] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.605777][ T389] Call Trace: [ 38.605886][ T389] [ 38.605959][ T389] dump_stack_lvl+0x82/0xd0 [ 38.606100][ T389] print_bad_irq_dependency+0x957/0xd40 [ 38.606239][ T389] ? hlock_class+0x4e/0x130 [ 38.606456][ T389] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 38.606633][ T389] ? __pfx_usage_skip+0x10/0x10 [ 38.606767][ T389] ? __bfs+0x246/0x650 [ 38.606870][ T389] ? __pfx_usage_match+0x10/0x10 [ 38.607088][ T389] check_irq_usage+0x596/0x850 [ 38.607229][ T389] ? get_page_from_freelist+0x823/0xf60 [ 38.607366][ T389] ? __pfx_check_irq_usage+0x10/0x10 [ 38.607504][ T389] ? __bfs+0x246/0x650 [ 38.607609][ T389] ? __pfx_hlock_conflict+0x10/0x10 [ 38.607831][ T389] ? check_path.constprop.0+0x24/0x50 [ 38.607966][ T389] ? check_noncircular+0x14c/0x3e0 [ 38.608102][ T389] ? __pfx_check_noncircular+0x10/0x10 [ 38.608246][ T389] ? check_prev_add+0x194/0xce0 [ 38.608542][ T389] check_prev_add+0x194/0xce0 [ 38.608688][ T389] ? validate_chain+0x130/0x9b0 [ 38.608825][ T389] validate_chain+0x71d/0x9b0 [ 38.608961][ T389] ? mark_lock+0x38/0x3e0 [ 38.609143][ T389] ? __pfx_validate_chain+0x10/0x10 [ 38.609277][ T389] ? hlock_class+0x4e/0x130 [ 38.609412][ T389] ? mark_lock+0x38/0x3e0 [ 38.609520][ T389] __lock_acquire+0xaf0/0x1570 [ 38.609668][ T389] lock_acquire.part.0+0xeb/0x330 [ 38.609886][ T389] ? __get_task_comm+0x27/0x70 [ 38.610023][ T389] ? mark_lock+0x38/0x3e0 [ 38.610126][ T389] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.610263][ T389] ? trace_lock_acquire+0x135/0x1c0 [ 38.610478][ T389] ? __get_task_comm+0x27/0x70 [ 38.610622][ T389] ? lock_acquire+0x32/0xc0 [ 38.610768][ T389] ? __get_task_comm+0x27/0x70 [ 38.610903][ T389] _raw_spin_lock+0x30/0x40 [ 38.611043][ T389] ? __get_task_comm+0x27/0x70 [ 38.611258][ T389] __get_task_comm+0x27/0x70 [ 38.611392][ T389] ref_tracker_alloc+0x2ee/0x490 [ 38.611533][ T389] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 38.611679][ T389] ? dev_get_by_index+0x177/0x270 [ 38.611895][ T389] ? netdev_get_by_index+0x5e/0x80 [ 38.612030][ T389] ? fib6_nh_init+0x3d8/0x15b0 [ 38.612166][ T389] ? ip6_route_info_create+0xf18/0x17d0 [ 38.612303][ T389] ? addrconf_f6i_alloc+0x265/0x560 [ 38.612520][ T389] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.612668][ T389] ? addrconf_join_anycast+0x1c0/0x220 [ 38.612803][ T389] ? dev_forward_change+0x2a6/0x7b0 [ 38.612938][ T389] ? addrconf_fixup_forwarding+0x23f/0x460 [ 38.613187][ T389] ? addrconf_sysctl_forward+0x212/0x2b0 [ 38.613322][ T389] ? proc_sys_call_handler+0x403/0x5e0 [ 38.613469][ T389] ? vfs_write+0x9e5/0x10a0 [ 38.613605][ T389] ? ksys_write+0xf5/0x1e0 [ 38.613818][ T389] ? do_syscall_64+0xc6/0x1e0 [ 38.613953][ T389] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.614125][ T389] ? dev_get_by_index+0x177/0x270 [ 38.614261][ T389] netdev_get_by_index+0x5e/0x80 [ 38.614481][ T389] fib6_nh_init+0x3d8/0x15b0 [ 38.614629][ T389] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 38.614800][ T389] ? __pfx_fib6_nh_init+0x10/0x10 [ 38.614935][ T389] ? kasan_save_track+0x14/0x30 [ 38.615152][ T389] ? __kasan_kmalloc+0x7f/0x90 [ 38.615286][ T389] ? __kmalloc+0x1d7/0x3c0 [ 38.615431][ T389] ? fib6_get_table+0x116/0x290 [ 38.615567][ T389] ip6_route_info_create+0xf18/0x17d0 [ 38.615716][ T389] ? __lock_release+0x103/0x460 [ 38.615933][ T389] ? __pfx_ip6_route_info_create+0x10/0x10 [ 38.616101][ T389] ? addrconf_f6i_alloc+0x12d/0x560 [ 38.616239][ T389] addrconf_f6i_alloc+0x265/0x560 [ 38.616377][ T389] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 38.616596][ T389] ? do_raw_write_lock+0x122/0x3b0 [ 38.616731][ T389] ? __pfx_do_raw_write_lock+0x10/0x10 [ 38.616865][ T389] ? lock_acquire+0x32/0xc0 [ 38.617002][ T389] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.617220][ T389] addrconf_join_anycast+0x1c0/0x220 [ 38.617354][ T389] ? mark_lock+0x38/0x3e0 [ 38.617462][ T389] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 38.617631][ T389] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 38.617881][ T389] dev_forward_change+0x2a6/0x7b0 [ 38.618017][ T389] ? __pfx_dev_forward_change+0x10/0x10 [ 38.618155][ T389] addrconf_fixup_forwarding+0x23f/0x460 [ 38.618291][ T389] addrconf_sysctl_forward+0x212/0x2b0 [ 38.618510][ T389] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.618684][ T389] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.618852][ T389] ? trace_kmalloc+0x2a/0xe0 [ 38.618986][ T389] ? __kmalloc_node+0x220/0x400 [ 38.619282][ T389] ? proc_sys_call_handler+0x30b/0x5e0 [ 38.619421][ T389] proc_sys_call_handler+0x403/0x5e0 [ 38.619557][ T389] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 38.619737][ T389] ? __lock_acquire+0xaf0/0x1570 [ 38.619956][ T389] vfs_write+0x9e5/0x10a0 [ 38.620070][ T389] ? do_user_addr_fault+0x449/0xbe0 [ 38.620206][ T389] ? __pfx_vfs_write+0x10/0x10 [ 38.620342][ T389] ? find_held_lock+0x2c/0x110 [ 38.620561][ T389] ? __pfx___lock_release+0x10/0x10 [ 38.620696][ T389] ? __fget_light+0x53/0x1e0 [ 38.620833][ T389] ksys_write+0xf5/0x1e0 [ 38.620936][ T389] ? __pfx_ksys_write+0x10/0x10 [ 38.621072][ T389] ? do_user_addr_fault+0x4bd/0xbe0 [ 38.621324][ T389] do_syscall_64+0xc6/0x1e0 [ 38.621464][ T389] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.621631][ T389] RIP: 0033:0x7f781d288957 [ 38.621778][ T389] 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 [ 38.622345][ T389] RSP: 002b:00007ffc66f9b7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 38.622637][ T389] RAX: ffffffffffffffda RBX: 000055f77f715360 RCX: 00007f781d288957 [ 38.622841][ T389] RDX: 0000000000000002 RSI: 000055f77f7153a0 RDI: 0000000000000005 [ 38.623046][ T389] RBP: 000055f77f7174d0 R08: 0000000000000003 R09: 0000000000000077 [ 38.623329][ T389] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 38.623536][ T389] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f781d33f9c0 [ 38.623757][ T389]