[ 25.153502][ T259] ip (259) used greatest stack depth: 23456 bytes left [ 30.415133][ T310] gre: GRE over IPv4 demultiplexor driver [ 30.461902][ T310] ip6_gre: GRE over IPv6 tunneling driver [ 32.581149][ T331] 8021q: 802.1Q VLAN Support v1.8 [ 36.661700][ T369] GACT probability NOT on [ 40.369459][ T402] [ 40.369591][ T402] ===================================================== [ 40.369783][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.370024][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 40.370181][ T402] ----------------------------------------------------- [ 40.370366][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.370601][ T402] ffff888007772c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.370875][ T402] [ 40.370875][ T402] and this task is already holding: [ 40.371093][ T402] ffff888002836d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.371364][ T402] which would create a new lock dependency: [ 40.371547][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.371774][ T402] [ 40.371774][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.372032][ T402] (&ndev->lock){++--}-{2:2} [ 40.372036][ T402] [ 40.372036][ T402] ... which became SOFTIRQ-irq-safe at: [ 40.372395][ T402] __lock_acquire+0x797/0x1570 [ 40.372559][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.372712][ T402] _raw_write_lock+0x30/0x40 [ 40.372868][ T402] addrconf_rs_timer+0xa9/0x730 [ 40.373021][ T402] call_timer_fn+0x13b/0x230 [ 40.373178][ T402] __run_timers+0x545/0x810 [ 40.373329][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.373477][ T402] __do_softirq+0x1f8/0x5df [ 40.373626][ T402] irq_exit_rcu+0x97/0xc0 [ 40.373777][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.373924][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.374117][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.374266][ T402] qlist_free_all+0x4c/0x140 [ 40.374421][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.374570][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.374726][ T402] kmem_cache_alloc+0xef/0x270 [ 40.374874][ T402] p9_tag_alloc+0x99/0x700 [ 40.375023][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.375171][ T402] p9_client_rpc+0x18d/0x930 [ 40.375323][ T402] p9_client_clunk+0x74/0xe0 [ 40.375472][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.375625][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.375774][ T402] dput.part.0+0x333/0x6c0 [ 40.375922][ T402] walk_component+0x199/0x4f0 [ 40.376071][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.376256][ T402] path_openat+0x1be/0x440 [ 40.376404][ T402] do_filp_open+0x1b3/0x3e0 [ 40.376571][ T402] do_sys_openat2+0x122/0x160 [ 40.376721][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.376867][ T402] do_syscall_64+0xc6/0x1e0 [ 40.377023][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.377208][ T402] [ 40.377208][ T402] to a SOFTIRQ-irq-unsafe lock: [ 40.377392][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 40.377397][ T402] [ 40.377397][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 40.377753][ T402] ... [ 40.377754][ T402] __lock_acquire+0x797/0x1570 [ 40.377991][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.378150][ T402] _raw_spin_lock+0x30/0x40 [ 40.378308][ T402] set_mems_allowed+0x1d/0x210 [ 40.378461][ T402] kernel_init_freeable+0x72/0x310 [ 40.378610][ T402] kernel_init+0x20/0x200 [ 40.378759][ T402] ret_from_fork+0x31/0x70 [ 40.378916][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.379064][ T402] [ 40.379064][ T402] other info that might help us debug this: [ 40.379064][ T402] [ 40.379358][ T402] Possible interrupt unsafe locking scenario: [ 40.379358][ T402] [ 40.379583][ T402] CPU0 CPU1 [ 40.379731][ T402] ---- ---- [ 40.379878][ T402] lock(&p->alloc_lock); [ 40.380008][ T402] local_irq_disable(); [ 40.380191][ T402] lock(&ndev->lock); [ 40.380378][ T402] lock(&p->alloc_lock); [ 40.380573][ T402] [ 40.380687][ T402] lock(&ndev->lock); [ 40.380804][ T402] [ 40.380804][ T402] *** DEADLOCK *** [ 40.380804][ T402] [ 40.381026][ T402] 3 locks held by sysctl/402: [ 40.381174][ T402] #0: ffff888005f913f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.381442][ T402] #1: ffffffffa29969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.381753][ T402] #2: ffff888002836d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.382018][ T402] [ 40.382018][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.382306][ T402] -> (&ndev->lock){++--}-{2:2} { [ 40.382459][ T402] HARDIRQ-ON-W at: [ 40.382576][ T402] __lock_acquire+0x797/0x1570 [ 40.382769][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.382965][ T402] _raw_write_lock_bh+0x38/0x50 [ 40.383153][ T402] addrconf_permanent_addr+0x6e/0x670 [ 40.383343][ T402] addrconf_notify+0x749/0xd60 [ 40.383533][ T402] notifier_call_chain+0xcd/0x150 [ 40.383723][ T402] __dev_notify_flags+0xe6/0x250 [ 40.383913][ T402] dev_change_flags+0xec/0x160 [ 40.384105][ T402] do_setlink+0x7d6/0x21e0 [ 40.384298][ T402] __rtnl_newlink+0xaa7/0xd80 [ 40.384487][ T402] rtnl_newlink+0x63/0xa0 [ 40.384677][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.384866][ T402] netlink_rcv_skb+0x130/0x360 [ 40.385057][ T402] netlink_unicast+0x449/0x710 [ 40.385245][ T402] netlink_sendmsg+0x723/0xbe0 [ 40.385438][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 40.385632][ T402] ___sys_sendmsg+0xee/0x170 [ 40.385828][ T402] __sys_sendmsg+0xcd/0x170 [ 40.386015][ T402] do_syscall_64+0xc6/0x1e0 [ 40.386209][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.386433][ T402] HARDIRQ-ON-R at: [ 40.386544][ T402] __lock_acquire+0x797/0x1570 [ 40.386735][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.386927][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.387116][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.387303][ T402] inet6_fill_link_af+0x5e/0xe0 [ 40.387489][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.387677][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.387883][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.388106][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 40.388297][ T402] register_netdevice+0x1177/0x1690 [ 40.388483][ T402] register_netdev+0x20/0x40 [ 40.388672][ T402] sit_init_net+0x250/0x4f0 [ 40.388873][ T402] ops_init+0x9b/0x560 [ 40.389032][ T402] register_pernet_operations+0x2db/0x710 [ 40.389255][ T402] register_pernet_device+0x2a/0x60 [ 40.389442][ T402] sit_init+0x23/0xe0 [ 40.389595][ T402] do_one_initcall+0x8d/0x1e0 [ 40.389783][ T402] do_initcalls+0x1b2/0x3e0 [ 40.389988][ T402] kernel_init_freeable+0x232/0x310 [ 40.390192][ T402] kernel_init+0x20/0x200 [ 40.390377][ T402] ret_from_fork+0x31/0x70 [ 40.390568][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.390756][ T402] IN-SOFTIRQ-W at: [ 40.390868][ T402] __lock_acquire+0x797/0x1570 [ 40.391061][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.391247][ T402] _raw_write_lock+0x30/0x40 [ 40.391443][ T402] addrconf_rs_timer+0xa9/0x730 [ 40.391635][ T402] call_timer_fn+0x13b/0x230 [ 40.391828][ T402] __run_timers+0x545/0x810 [ 40.392016][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.392204][ T402] __do_softirq+0x1f8/0x5df [ 40.392392][ T402] irq_exit_rcu+0x97/0xc0 [ 40.392589][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.392825][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.393046][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.393269][ T402] qlist_free_all+0x4c/0x140 [ 40.393459][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.393648][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.393842][ T402] kmem_cache_alloc+0xef/0x270 [ 40.394040][ T402] p9_tag_alloc+0x99/0x700 [ 40.394229][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.394415][ T402] p9_client_rpc+0x18d/0x930 [ 40.394607][ T402] p9_client_clunk+0x74/0xe0 [ 40.394804][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.394996][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.395188][ T402] dput.part.0+0x333/0x6c0 [ 40.395376][ T402] walk_component+0x199/0x4f0 [ 40.395564][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.395789][ T402] path_openat+0x1be/0x440 [ 40.395979][ T402] do_filp_open+0x1b3/0x3e0 [ 40.396171][ T402] do_sys_openat2+0x122/0x160 [ 40.396357][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.396550][ T402] do_syscall_64+0xc6/0x1e0 [ 40.396829][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.397063][ T402] IN-SOFTIRQ-R at: [ 40.397177][ T402] __lock_acquire+0x797/0x1570 [ 40.397448][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.397641][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.397824][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 40.398007][ T402] addrconf_rs_timer+0x24a/0x730 [ 40.398276][ T402] call_timer_fn+0x13b/0x230 [ 40.398463][ T402] __run_timers+0x545/0x810 [ 40.398648][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.398920][ T402] __do_softirq+0x1f8/0x5df [ 40.399108][ T402] irq_exit_rcu+0x97/0xc0 [ 40.399302][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.399527][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.399756][ T402] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.399997][ T402] qlist_free_all+0x4c/0x140 [ 40.400268][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.400458][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.400661][ T402] kmem_cache_alloc+0xef/0x270 [ 40.400851][ T402] p9_tag_alloc+0x99/0x700 [ 40.401122][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.401309][ T402] p9_client_rpc+0x18d/0x930 [ 40.401491][ T402] p9_client_clunk+0x74/0xe0 [ 40.401760][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.401953][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.402139][ T402] dput.part.0+0x333/0x6c0 [ 40.402323][ T402] walk_component+0x199/0x4f0 [ 40.402592][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.402816][ T402] path_openat+0x1be/0x440 [ 40.403009][ T402] do_filp_open+0x1b3/0x3e0 [ 40.403284][ T402] do_sys_openat2+0x122/0x160 [ 40.403470][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.403654][ T402] do_syscall_64+0xc6/0x1e0 [ 40.403920][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.404143][ T402] INITIAL USE at: [ 40.404257][ T402] __lock_acquire+0x797/0x1570 [ 40.404443][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.404724][ T402] _raw_write_lock_bh+0x38/0x50 [ 40.404908][ T402] addrconf_permanent_addr+0x6e/0x670 [ 40.405091][ T402] addrconf_notify+0x749/0xd60 [ 40.405358][ T402] notifier_call_chain+0xcd/0x150 [ 40.405545][ T402] __dev_notify_flags+0xe6/0x250 [ 40.405735][ T402] dev_change_flags+0xec/0x160 [ 40.405930][ T402] do_setlink+0x7d6/0x21e0 [ 40.406203][ T402] __rtnl_newlink+0xaa7/0xd80 [ 40.406391][ T402] rtnl_newlink+0x63/0xa0 [ 40.406578][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.406941][ T402] netlink_rcv_skb+0x130/0x360 [ 40.407129][ T402] netlink_unicast+0x449/0x710 [ 40.407324][ T402] netlink_sendmsg+0x723/0xbe0 [ 40.407516][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 40.407707][ T402] ___sys_sendmsg+0xee/0x170 [ 40.407895][ T402] __sys_sendmsg+0xcd/0x170 [ 40.408084][ T402] do_syscall_64+0xc6/0x1e0 [ 40.408351][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.408578][ T402] INITIAL READ USE at: [ 40.408691][ T402] __lock_acquire+0x797/0x1570 [ 40.408967][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.409159][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.409346][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.409569][ T402] inet6_fill_link_af+0x5e/0xe0 [ 40.409837][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.410048][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.410275][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.410582][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 40.410765][ T402] register_netdevice+0x1177/0x1690 [ 40.410988][ T402] register_netdev+0x20/0x40 [ 40.411252][ T402] sit_init_net+0x250/0x4f0 [ 40.411444][ T402] ops_init+0x9b/0x560 [ 40.411635][ T402] register_pernet_operations+0x2db/0x710 [ 40.411949][ T402] register_pernet_device+0x2a/0x60 [ 40.412167][ T402] sit_init+0x23/0xe0 [ 40.412354][ T402] do_one_initcall+0x8d/0x1e0 [ 40.412541][ T402] do_initcalls+0x1b2/0x3e0 [ 40.412733][ T402] kernel_init_freeable+0x232/0x310 [ 40.412955][ T402] kernel_init+0x20/0x200 [ 40.413224][ T402] ret_from_fork+0x31/0x70 [ 40.413411][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.413598][ T402] } [ 40.413676][ T402] ... key at: [] __key.37+0x0/0x40 [ 40.413990][ T402] [ 40.413990][ T402] the dependencies between the lock to be acquired [ 40.413992][ T402] and SOFTIRQ-irq-unsafe lock: [ 40.414390][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.414544][ T402] HARDIRQ-ON-W at: [ 40.414740][ T402] __lock_acquire+0x797/0x1570 [ 40.414927][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.415111][ T402] _raw_spin_lock+0x30/0x40 [ 40.415376][ T402] set_mems_allowed+0x1d/0x210 [ 40.415566][ T402] kernel_init_freeable+0x72/0x310 [ 40.415752][ T402] kernel_init+0x20/0x200 [ 40.415935][ T402] ret_from_fork+0x31/0x70 [ 40.416208][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.416391][ T402] SOFTIRQ-ON-W at: [ 40.416501][ T402] __lock_acquire+0x797/0x1570 [ 40.416686][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.416970][ T402] _raw_spin_lock+0x30/0x40 [ 40.417152][ T402] set_mems_allowed+0x1d/0x210 [ 40.417334][ T402] kernel_init_freeable+0x72/0x310 [ 40.417518][ T402] kernel_init+0x20/0x200 [ 40.417708][ T402] ret_from_fork+0x31/0x70 [ 40.417890][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.418244][ T402] INITIAL USE at: [ 40.418356][ T402] __lock_acquire+0x797/0x1570 [ 40.418535][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.418721][ T402] _raw_spin_lock+0x30/0x40 [ 40.418988][ T402] set_mems_allowed+0x1d/0x210 [ 40.419177][ T402] kernel_init_freeable+0x72/0x310 [ 40.419363][ T402] kernel_init+0x20/0x200 [ 40.419549][ T402] ret_from_fork+0x31/0x70 [ 40.419817][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.420022][ T402] } [ 40.420099][ T402] ... key at: [] __key.387+0x0/0x40 [ 40.420409][ T402] ... acquired at: [ 40.420518][ T402] check_prev_add+0x194/0xce0 [ 40.420667][ T402] validate_chain+0x71d/0x9b0 [ 40.420812][ T402] __lock_acquire+0xaf0/0x1570 [ 40.420971][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.421199][ T402] _raw_spin_lock+0x30/0x40 [ 40.421346][ T402] __get_task_comm+0x27/0x70 [ 40.421494][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.421644][ T402] netdev_get_by_index+0x5e/0x80 [ 40.421889][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.422038][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.422188][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.422340][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.422489][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.422634][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.422782][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.422965][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.423198][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.423345][ T402] vfs_write+0x9e5/0x10a0 [ 40.423497][ T402] ksys_write+0xf5/0x1e0 [ 40.423642][ T402] do_syscall_64+0xc6/0x1e0 [ 40.423787][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.424051][ T402] [ 40.424130][ T402] [ 40.424130][ T402] stack backtrace: [ 40.424314][ T402] CPU: 0 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.424624][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.424951][ T402] Call Trace: [ 40.425065][ T402] [ 40.425155][ T402] dump_stack_lvl+0x82/0xd0 [ 40.425387][ T402] print_bad_irq_dependency+0x957/0xd40 [ 40.425535][ T402] ? hlock_class+0x4e/0x130 [ 40.425684][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.425867][ T402] ? __pfx_usage_skip+0x10/0x10 [ 40.426098][ T402] ? __bfs+0x246/0x650 [ 40.426218][ T402] ? __pfx_usage_match+0x10/0x10 [ 40.426375][ T402] check_irq_usage+0x596/0x850 [ 40.426523][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 40.426671][ T402] ? __bfs+0x246/0x650 [ 40.426868][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 40.427017][ T402] ? check_path.constprop.0+0x24/0x50 [ 40.427165][ T402] ? check_noncircular+0x14c/0x3e0 [ 40.427314][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 40.427467][ T402] ? check_prev_add+0x194/0xce0 [ 40.427617][ T402] check_prev_add+0x194/0xce0 [ 40.427768][ T402] ? validate_chain+0x130/0x9b0 [ 40.427919][ T402] validate_chain+0x71d/0x9b0 [ 40.428076][ T402] ? mark_lock+0x38/0x3e0 [ 40.428193][ T402] ? __pfx_validate_chain+0x10/0x10 [ 40.428342][ T402] ? hlock_class+0x4e/0x130 [ 40.428489][ T402] ? mark_lock+0x38/0x3e0 [ 40.428604][ T402] __lock_acquire+0xaf0/0x1570 [ 40.428755][ T402] ? __traceiter_break_lease_noblock+0x4a/0xa0 [ 40.428940][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.429090][ T402] ? __get_task_comm+0x27/0x70 [ 40.429239][ T402] ? mark_lock+0x38/0x3e0 [ 40.429513][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.429668][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 40.429818][ T402] ? __get_task_comm+0x27/0x70 [ 40.429994][ T402] ? lock_acquire+0x32/0xc0 [ 40.430148][ T402] ? __get_task_comm+0x27/0x70 [ 40.430379][ T402] _raw_spin_lock+0x30/0x40 [ 40.430526][ T402] ? __get_task_comm+0x27/0x70 [ 40.430678][ T402] __get_task_comm+0x27/0x70 [ 40.430828][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.431058][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.431210][ T402] ? dev_get_by_index+0x177/0x270 [ 40.431359][ T402] ? netdev_get_by_index+0x5e/0x80 [ 40.431507][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 40.431743][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 40.431894][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 40.432044][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.432195][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 40.432346][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 40.432493][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.432677][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.432838][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 40.432984][ T402] ? vfs_write+0x9e5/0x10a0 [ 40.433132][ T402] ? ksys_write+0xf5/0x1e0 [ 40.433279][ T402] ? do_syscall_64+0xc6/0x1e0 [ 40.433424][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.433610][ T402] ? dev_get_by_index+0x177/0x270 [ 40.433757][ T402] netdev_get_by_index+0x5e/0x80 [ 40.433915][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.434064][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.434283][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.434429][ T402] ? kasan_save_track+0x14/0x30 [ 40.434577][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 40.434725][ T402] ? __kmalloc+0x1d7/0x3c0 [ 40.434875][ T402] ? fib6_get_table+0x116/0x290 [ 40.435027][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.435175][ T402] ? __lock_release+0x103/0x460 [ 40.435319][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.435508][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.435658][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.435807][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.435967][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 40.436115][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.436348][ T402] ? lock_acquire+0x32/0xc0 [ 40.436500][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.436651][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.436805][ T402] ? mark_lock+0x38/0x3e0 [ 40.437004][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.437192][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.437372][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.437519][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 40.437751][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.437901][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.438058][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.438246][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.438512][ T402] ? trace_kmalloc+0x2a/0xe0 [ 40.438665][ T402] ? __kmalloc_node+0x220/0x400 [ 40.438810][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.438958][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.439191][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.439371][ T402] ? __lock_acquire+0xaf0/0x1570 [ 40.439527][ T402] vfs_write+0x9e5/0x10a0 [ 40.439636][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 40.439870][ T402] ? __pfx_vfs_write+0x10/0x10 [ 40.440036][ T402] ? find_held_lock+0x2c/0x110 [ 40.440187][ T402] ? __pfx___lock_release+0x10/0x10 [ 40.440333][ T402] ? __fget_light+0x53/0x1e0 [ 40.440485][ T402] ksys_write+0xf5/0x1e0 [ 40.440606][ T402] ? __pfx_ksys_write+0x10/0x10 [ 40.440758][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.440905][ T402] do_syscall_64+0xc6/0x1e0 [ 40.441053][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.441320][ T402] RIP: 0033:0x7f14fad89957 [ 40.441482][ T402] 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 [ 40.442097][ T402] RSP: 002b:00007ffd4e62fe38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.442323][ T402] RAX: ffffffffffffffda RBX: 0000562183aad360 RCX: 00007f14fad89957 [ 40.442540][ T402] RDX: 0000000000000002 RSI: 0000562183aad3a0 RDI: 0000000000000005 [ 40.442927][ T402] RBP: 0000562183aaf4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.443142][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.443367][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f14fae409c0 [ 40.443586][ T402]