[ 25.342340][ T260] ip (260) used greatest stack depth: 23584 bytes left [ 30.520733][ T311] gre: GRE over IPv4 demultiplexor driver [ 30.576556][ T311] ip6_gre: GRE over IPv6 tunneling driver [ 32.656083][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 36.827058][ T371] GACT probability NOT on [ 40.590238][ T404] [ 40.590351][ T404] ===================================================== [ 40.590552][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.590799][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 40.590953][ T404] ----------------------------------------------------- [ 40.591148][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.591391][ T404] ffff88800703cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.591674][ T404] [ 40.591674][ T404] and this task is already holding: [ 40.591906][ T404] ffff88800546d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.592190][ T404] which would create a new lock dependency: [ 40.592379][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.592634][ T404] [ 40.592634][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.592895][ T404] (&ndev->lock){++--}-{2:2} [ 40.592898][ T404] [ 40.592898][ T404] ... which became SOFTIRQ-irq-safe at: [ 40.593291][ T404] __lock_acquire+0x797/0x1570 [ 40.593456][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.593611][ T404] _raw_write_lock+0x30/0x40 [ 40.593772][ T404] addrconf_rs_timer+0xa9/0x730 [ 40.593930][ T404] call_timer_fn+0x13b/0x230 [ 40.594087][ T404] __run_timers+0x545/0x810 [ 40.594242][ T404] timer_expire_remote+0x9b/0xe0 [ 40.594396][ T404] tmigr_handle_remote_cpu+0x270/0x430 [ 40.594549][ T404] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.594704][ T404] tmigr_handle_remote+0x21d/0x3a0 [ 40.594854][ T404] __do_softirq+0x1f8/0x5df [ 40.595004][ T404] irq_exit_rcu+0x97/0xc0 [ 40.595192][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.595352][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.595549][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.595706][ T404] qlist_free_all+0x4c/0x140 [ 40.595863][ T404] kasan_quarantine_reduce+0x192/0x1e0 [ 40.596021][ T404] __kasan_slab_alloc+0x49/0x70 [ 40.596177][ T404] kmem_cache_alloc+0xef/0x270 [ 40.596333][ T404] p9_tag_alloc+0x99/0x700 [ 40.596490][ T404] p9_client_prepare_req+0xe6/0x290 [ 40.596650][ T404] p9_client_rpc+0x18d/0x930 [ 40.596825][ T404] p9_client_clunk+0x74/0xe0 [ 40.596983][ T404] v9fs_dir_release+0x25f/0x320 [ 40.597141][ T404] __fput+0x1fc/0xa80 [ 40.597259][ T404] task_work_run+0x132/0x220 [ 40.597421][ T404] do_exit+0x774/0xcf0 [ 40.597539][ T404] do_group_exit+0xb8/0x260 [ 40.597700][ T404] __x64_sys_exit_group+0x3e/0x50 [ 40.597858][ T404] do_syscall_64+0xc6/0x1e0 [ 40.598014][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.598203][ T404] [ 40.598203][ T404] to a SOFTIRQ-irq-unsafe lock: [ 40.598392][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 40.598397][ T404] [ 40.598397][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 40.598790][ T404] ... [ 40.598792][ T404] __lock_acquire+0x797/0x1570 [ 40.599032][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.599188][ T404] _raw_spin_lock+0x30/0x40 [ 40.599353][ T404] set_mems_allowed+0x1d/0x210 [ 40.599513][ T404] kernel_init_freeable+0x72/0x310 [ 40.599672][ T404] kernel_init+0x20/0x200 [ 40.599827][ T404] ret_from_fork+0x31/0x70 [ 40.599982][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.600138][ T404] [ 40.600138][ T404] other info that might help us debug this: [ 40.600138][ T404] [ 40.600439][ T404] Possible interrupt unsafe locking scenario: [ 40.600439][ T404] [ 40.600673][ T404] CPU0 CPU1 [ 40.600828][ T404] ---- ---- [ 40.600984][ T404] lock(&p->alloc_lock); [ 40.601101][ T404] local_irq_disable(); [ 40.601293][ T404] lock(&ndev->lock); [ 40.601491][ T404] lock(&p->alloc_lock); [ 40.601682][ T404] [ 40.601805][ T404] lock(&ndev->lock); [ 40.601923][ T404] [ 40.601923][ T404] *** DEADLOCK *** [ 40.601923][ T404] [ 40.602154][ T404] 3 locks held by sysctl/404: [ 40.602308][ T404] #0: ffff888005bf13f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.602589][ T404] #1: ffffffff8ff969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.602913][ T404] #2: ffff88800546d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.603192][ T404] [ 40.603192][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.603496][ T404] -> (&ndev->lock){++--}-{2:2} { [ 40.603657][ T404] HARDIRQ-ON-W at: [ 40.603777][ T404] __lock_acquire+0x797/0x1570 [ 40.603981][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.604181][ T404] _raw_write_lock_bh+0x38/0x50 [ 40.604393][ T404] addrconf_permanent_addr+0x6e/0x670 [ 40.604588][ T404] addrconf_notify+0x749/0xd60 [ 40.604787][ T404] notifier_call_chain+0xcd/0x150 [ 40.604984][ T404] __dev_notify_flags+0xe6/0x250 [ 40.605201][ T404] dev_change_flags+0xec/0x160 [ 40.605400][ T404] do_setlink+0x7d6/0x21e0 [ 40.605600][ T404] __rtnl_newlink+0xaa7/0xd80 [ 40.605798][ T404] rtnl_newlink+0x63/0xa0 [ 40.606003][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.606205][ T404] netlink_rcv_skb+0x130/0x360 [ 40.606407][ T404] netlink_unicast+0x449/0x710 [ 40.606610][ T404] netlink_sendmsg+0x723/0xbe0 [ 40.606810][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 40.607006][ T404] ___sys_sendmsg+0xee/0x170 [ 40.607203][ T404] __sys_sendmsg+0xcd/0x170 [ 40.607402][ T404] do_syscall_64+0xc6/0x1e0 [ 40.607600][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.607839][ T404] HARDIRQ-ON-R at: [ 40.607961][ T404] __lock_acquire+0x797/0x1570 [ 40.608159][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.608354][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.608557][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.608753][ T404] inet6_fill_link_af+0x5e/0xe0 [ 40.608955][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.609153][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.609348][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.609580][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 40.609771][ T404] register_netdevice+0x1177/0x1690 [ 40.609964][ T404] register_netdev+0x20/0x40 [ 40.610160][ T404] sit_init_net+0x250/0x4f0 [ 40.610357][ T404] ops_init+0x9b/0x560 [ 40.610514][ T404] register_pernet_operations+0x2db/0x710 [ 40.610761][ T404] register_pernet_device+0x2a/0x60 [ 40.610958][ T404] sit_init+0x23/0xe0 [ 40.611115][ T404] do_one_initcall+0x8d/0x1e0 [ 40.611315][ T404] do_initcalls+0x1b2/0x3e0 [ 40.611517][ T404] kernel_init_freeable+0x232/0x310 [ 40.611714][ T404] kernel_init+0x20/0x200 [ 40.611910][ T404] ret_from_fork+0x31/0x70 [ 40.612106][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.612309][ T404] IN-SOFTIRQ-W at: [ 40.612424][ T404] __lock_acquire+0x797/0x1570 [ 40.612625][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.612826][ T404] _raw_write_lock+0x30/0x40 [ 40.613029][ T404] addrconf_rs_timer+0xa9/0x730 [ 40.613230][ T404] call_timer_fn+0x13b/0x230 [ 40.613428][ T404] __run_timers+0x545/0x810 [ 40.613624][ T404] timer_expire_remote+0x9b/0xe0 [ 40.613826][ T404] tmigr_handle_remote_cpu+0x270/0x430 [ 40.614022][ T404] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.614328][ T404] tmigr_handle_remote+0x21d/0x3a0 [ 40.614538][ T404] __do_softirq+0x1f8/0x5df [ 40.614736][ T404] irq_exit_rcu+0x97/0xc0 [ 40.614937][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.615180][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.615422][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.615666][ T404] qlist_free_all+0x4c/0x140 [ 40.615952][ T404] kasan_quarantine_reduce+0x192/0x1e0 [ 40.616151][ T404] __kasan_slab_alloc+0x49/0x70 [ 40.616349][ T404] kmem_cache_alloc+0xef/0x270 [ 40.616631][ T404] p9_tag_alloc+0x99/0x700 [ 40.616833][ T404] p9_client_prepare_req+0xe6/0x290 [ 40.617028][ T404] p9_client_rpc+0x18d/0x930 [ 40.617317][ T404] p9_client_clunk+0x74/0xe0 [ 40.617518][ T404] v9fs_dir_release+0x25f/0x320 [ 40.617721][ T404] __fput+0x1fc/0xa80 [ 40.617879][ T404] task_work_run+0x132/0x220 [ 40.618078][ T404] do_exit+0x774/0xcf0 [ 40.618244][ T404] do_group_exit+0xb8/0x260 [ 40.618448][ T404] __x64_sys_exit_group+0x3e/0x50 [ 40.618642][ T404] do_syscall_64+0xc6/0x1e0 [ 40.618923][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.619152][ T404] IN-SOFTIRQ-R at: [ 40.619268][ T404] __lock_acquire+0x797/0x1570 [ 40.619557][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.619759][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.619953][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 40.620148][ T404] addrconf_rs_timer+0x24a/0x730 [ 40.620439][ T404] call_timer_fn+0x13b/0x230 [ 40.620643][ T404] __run_timers+0x545/0x810 [ 40.620841][ T404] timer_expire_remote+0x9b/0xe0 [ 40.621036][ T404] tmigr_handle_remote_cpu+0x270/0x430 [ 40.621231][ T404] tmigr_handle_remote_up+0x19f/0x2e0 [ 40.621436][ T404] tmigr_handle_remote+0x21d/0x3a0 [ 40.621717][ T404] __do_softirq+0x1f8/0x5df [ 40.621915][ T404] irq_exit_rcu+0x97/0xc0 [ 40.622107][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.622351][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.622666][ T404] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.622897][ T404] qlist_free_all+0x4c/0x140 [ 40.623096][ T404] kasan_quarantine_reduce+0x192/0x1e0 [ 40.623378][ T404] __kasan_slab_alloc+0x49/0x70 [ 40.623571][ T404] kmem_cache_alloc+0xef/0x270 [ 40.623768][ T404] p9_tag_alloc+0x99/0x700 [ 40.623967][ T404] p9_client_prepare_req+0xe6/0x290 [ 40.624160][ T404] p9_client_rpc+0x18d/0x930 [ 40.624351][ T404] p9_client_clunk+0x74/0xe0 [ 40.624626][ T404] v9fs_dir_release+0x25f/0x320 [ 40.624819][ T404] __fput+0x1fc/0xa80 [ 40.624976][ T404] task_work_run+0x132/0x220 [ 40.625183][ T404] do_exit+0x774/0xcf0 [ 40.625441][ T404] do_group_exit+0xb8/0x260 [ 40.625635][ T404] __x64_sys_exit_group+0x3e/0x50 [ 40.625831][ T404] do_syscall_64+0xc6/0x1e0 [ 40.626027][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.626259][ T404] INITIAL USE at: [ 40.626377][ T404] __lock_acquire+0x797/0x1570 [ 40.626574][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.626850][ T404] _raw_write_lock_bh+0x38/0x50 [ 40.627049][ T404] addrconf_permanent_addr+0x6e/0x670 [ 40.627241][ T404] addrconf_notify+0x749/0xd60 [ 40.627436][ T404] notifier_call_chain+0xcd/0x150 [ 40.627713][ T404] __dev_notify_flags+0xe6/0x250 [ 40.627912][ T404] dev_change_flags+0xec/0x160 [ 40.628107][ T404] do_setlink+0x7d6/0x21e0 [ 40.628398][ T404] __rtnl_newlink+0xaa7/0xd80 [ 40.628603][ T404] rtnl_newlink+0x63/0xa0 [ 40.628798][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.628995][ T404] netlink_rcv_skb+0x130/0x360 [ 40.629198][ T404] netlink_unicast+0x449/0x710 [ 40.629409][ T404] netlink_sendmsg+0x723/0xbe0 [ 40.629609][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 40.629887][ T404] ___sys_sendmsg+0xee/0x170 [ 40.630085][ T404] __sys_sendmsg+0xcd/0x170 [ 40.630377][ T404] do_syscall_64+0xc6/0x1e0 [ 40.630653][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.630887][ T404] INITIAL READ USE at: [ 40.631003][ T404] __lock_acquire+0x797/0x1570 [ 40.631195][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.631474][ T404] _raw_read_lock_bh+0x44/0x80 [ 40.631672][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.631901][ T404] inet6_fill_link_af+0x5e/0xe0 [ 40.632178][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.632378][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.632613][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.632933][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 40.633130][ T404] register_netdevice+0x1177/0x1690 [ 40.633364][ T404] register_netdev+0x20/0x40 [ 40.633647][ T404] sit_init_net+0x250/0x4f0 [ 40.633844][ T404] ops_init+0x9b/0x560 [ 40.634037][ T404] register_pernet_operations+0x2db/0x710 [ 40.634348][ T404] register_pernet_device+0x2a/0x60 [ 40.634577][ T404] sit_init+0x23/0xe0 [ 40.634785][ T404] do_one_initcall+0x8d/0x1e0 [ 40.634988][ T404] do_initcalls+0x1b2/0x3e0 [ 40.635283][ T404] kernel_init_freeable+0x232/0x310 [ 40.635515][ T404] kernel_init+0x20/0x200 [ 40.635707][ T404] ret_from_fork+0x31/0x70 [ 40.635994][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.636186][ T404] } [ 40.636269][ T404] ... key at: [] __key.37+0x0/0x40 [ 40.636503][ T404] [ 40.636503][ T404] the dependencies between the lock to be acquired [ 40.636505][ T404] and SOFTIRQ-irq-unsafe lock: [ 40.636996][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.637156][ T404] HARDIRQ-ON-W at: [ 40.637453][ T404] __lock_acquire+0x797/0x1570 [ 40.637654][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.637855][ T404] _raw_spin_lock+0x30/0x40 [ 40.638049][ T404] set_mems_allowed+0x1d/0x210 [ 40.638246][ T404] kernel_init_freeable+0x72/0x310 [ 40.638439][ T404] kernel_init+0x20/0x200 [ 40.638647][ T404] ret_from_fork+0x31/0x70 [ 40.638926][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.639122][ T404] SOFTIRQ-ON-W at: [ 40.639246][ T404] __lock_acquire+0x797/0x1570 [ 40.639441][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.639719][ T404] _raw_spin_lock+0x30/0x40 [ 40.639910][ T404] set_mems_allowed+0x1d/0x210 [ 40.640107][ T404] kernel_init_freeable+0x72/0x310 [ 40.640385][ T404] kernel_init+0x20/0x200 [ 40.640589][ T404] ret_from_fork+0x31/0x70 [ 40.640783][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.640975][ T404] INITIAL USE at: [ 40.641172][ T404] __lock_acquire+0x797/0x1570 [ 40.641369][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.641572][ T404] _raw_spin_lock+0x30/0x40 [ 40.641762][ T404] set_mems_allowed+0x1d/0x210 [ 40.642042][ T404] kernel_init_freeable+0x72/0x310 [ 40.642233][ T404] kernel_init+0x20/0x200 [ 40.642423][ T404] ret_from_fork+0x31/0x70 [ 40.642706][ T404] ret_from_fork_asm+0x1a/0x30 [ 40.642897][ T404] } [ 40.642981][ T404] ... key at: [] __key.387+0x0/0x40 [ 40.643222][ T404] ... acquired at: [ 40.643417][ T404] check_prev_add+0x194/0xce0 [ 40.643579][ T404] validate_chain+0x71d/0x9b0 [ 40.643734][ T404] __lock_acquire+0xaf0/0x1570 [ 40.643885][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.644120][ T404] _raw_spin_lock+0x30/0x40 [ 40.644276][ T404] __get_task_comm+0x27/0x70 [ 40.644429][ T404] ref_tracker_alloc+0x2ee/0x490 [ 40.644583][ T404] netdev_get_by_index+0x5e/0x80 [ 40.644750][ T404] fib6_nh_init+0x3d8/0x15b0 [ 40.644986][ T404] ip6_route_info_create+0xf18/0x17d0 [ 40.645156][ T404] addrconf_f6i_alloc+0x265/0x560 [ 40.645316][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.645471][ T404] addrconf_join_anycast+0x1c0/0x220 [ 40.645718][ T404] dev_forward_change+0x2a6/0x7b0 [ 40.645874][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 40.646065][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 40.646220][ T404] proc_sys_call_handler+0x403/0x5e0 [ 40.646473][ T404] vfs_write+0x9e5/0x10a0 [ 40.646627][ T404] ksys_write+0xf5/0x1e0 [ 40.646779][ T404] do_syscall_64+0xc6/0x1e0 [ 40.646933][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.647212][ T404] [ 40.647292][ T404] [ 40.647292][ T404] stack backtrace: [ 40.647478][ T404] CPU: 3 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.647708][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.648144][ T404] Call Trace: [ 40.648259][ T404] [ 40.648340][ T404] dump_stack_lvl+0x82/0xd0 [ 40.648499][ T404] print_bad_irq_dependency+0x957/0xd40 [ 40.648738][ T404] ? hlock_class+0x4e/0x130 [ 40.648890][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.649082][ T404] ? __pfx_usage_skip+0x10/0x10 [ 40.649237][ T404] ? __bfs+0x246/0x650 [ 40.649453][ T404] ? __pfx_usage_match+0x10/0x10 [ 40.649606][ T404] check_irq_usage+0x596/0x850 [ 40.649762][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 40.649917][ T404] ? __bfs+0x246/0x650 [ 40.650035][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 40.650196][ T404] ? check_path.constprop.0+0x24/0x50 [ 40.650349][ T404] ? check_noncircular+0x14c/0x3e0 [ 40.650506][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 40.650674][ T404] ? check_prev_add+0x194/0xce0 [ 40.650905][ T404] check_prev_add+0x194/0xce0 [ 40.651057][ T404] ? validate_chain+0x130/0x9b0 [ 40.651217][ T404] validate_chain+0x71d/0x9b0 [ 40.651375][ T404] ? mark_lock+0x38/0x3e0 [ 40.651570][ T404] ? __pfx_validate_chain+0x10/0x10 [ 40.651740][ T404] ? hlock_class+0x4e/0x130 [ 40.651895][ T404] ? mark_lock+0x38/0x3e0 [ 40.652012][ T404] __lock_acquire+0xaf0/0x1570 [ 40.652173][ T404] lock_acquire.part.0+0xeb/0x330 [ 40.652426][ T404] ? __get_task_comm+0x27/0x70 [ 40.652579][ T404] ? mark_lock+0x38/0x3e0 [ 40.652695][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.652848][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 40.653002][ T404] ? __get_task_comm+0x27/0x70 [ 40.653162][ T404] ? lock_acquire+0x32/0xc0 [ 40.653318][ T404] ? __get_task_comm+0x27/0x70 [ 40.653479][ T404] _raw_spin_lock+0x30/0x40 [ 40.653723][ T404] ? __get_task_comm+0x27/0x70 [ 40.653876][ T404] __get_task_comm+0x27/0x70 [ 40.654031][ T404] ref_tracker_alloc+0x2ee/0x490 [ 40.654185][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.654339][ T404] ? dev_get_by_index+0x177/0x270 [ 40.654573][ T404] ? netdev_get_by_index+0x5e/0x80 [ 40.654727][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 40.654882][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 40.655048][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 40.655277][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.655436][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 40.655592][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 40.655745][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.656013][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.656166][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 40.656325][ T404] ? vfs_write+0x9e5/0x10a0 [ 40.656476][ T404] ? ksys_write+0xf5/0x1e0 [ 40.656712][ T404] ? do_syscall_64+0xc6/0x1e0 [ 40.656865][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.657065][ T404] ? dev_get_by_index+0x177/0x270 [ 40.657225][ T404] netdev_get_by_index+0x5e/0x80 [ 40.657478][ T404] fib6_nh_init+0x3d8/0x15b0 [ 40.657639][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.657832][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.657987][ T404] ? kasan_save_track+0x14/0x30 [ 40.658137][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 40.658297][ T404] ? __kmalloc+0x1d7/0x3c0 [ 40.658450][ T404] ? fib6_get_table+0x116/0x290 [ 40.658606][ T404] ip6_route_info_create+0xf18/0x17d0 [ 40.658841][ T404] ? __lock_release+0x103/0x460 [ 40.658994][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.659185][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.659343][ T404] addrconf_f6i_alloc+0x265/0x560 [ 40.659585][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.659744][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 40.659903][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.660053][ T404] ? lock_acquire+0x32/0xc0 [ 40.660207][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.660465][ T404] addrconf_join_anycast+0x1c0/0x220 [ 40.660616][ T404] ? mark_lock+0x38/0x3e0 [ 40.660730][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.660927][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.661207][ T404] dev_forward_change+0x2a6/0x7b0 [ 40.661363][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 40.661520][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 40.661683][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 40.661918][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.662115][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.662308][ T404] ? trace_kmalloc+0x2a/0xe0 [ 40.662461][ T404] ? __kmalloc_node+0x220/0x400 [ 40.662696][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.662852][ T404] proc_sys_call_handler+0x403/0x5e0 [ 40.663017][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.663223][ T404] ? __lock_acquire+0xaf0/0x1570 [ 40.663462][ T404] vfs_write+0x9e5/0x10a0 [ 40.663577][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 40.663731][ T404] ? __pfx_vfs_write+0x10/0x10 [ 40.663888][ T404] ? find_held_lock+0x2c/0x110 [ 40.664119][ T404] ? __pfx___lock_release+0x10/0x10 [ 40.664275][ T404] ? __fget_light+0x53/0x1e0 [ 40.664434][ T404] ksys_write+0xf5/0x1e0 [ 40.664549][ T404] ? __pfx_ksys_write+0x10/0x10 [ 40.664707][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.664948][ T404] do_syscall_64+0xc6/0x1e0 [ 40.665111][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.665306][ T404] RIP: 0033:0x7f2c914a4957 [ 40.665475][ T404] 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 [ 40.666159][ T404] RSP: 002b:00007ffdd8fd82c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.666394][ T404] RAX: ffffffffffffffda RBX: 000055a726829360 RCX: 00007f2c914a4957 [ 40.666624][ T404] RDX: 0000000000000002 RSI: 000055a7268293a0 RDI: 0000000000000005 [ 40.666855][ T404] RBP: 000055a72682b4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.667085][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.667315][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f2c9155b9c0 [ 40.667544][ T404]