[ 28.636323][ T298] 8021q: 802.1Q VLAN Support v1.8 [ 29.677922][ T309] gre: GRE over IPv4 demultiplexor driver [ 29.692401][ T309] ip_gre: GRE over IPv4 tunneling driver [ 36.467896][ T375] GACT probability NOT on [ 38.125238][ T391] [ 38.125435][ T391] ===================================================== [ 38.125639][ T391] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 38.125861][ T391] 6.9.0-rc1-virtme #1 Not tainted [ 38.126017][ T391] ----------------------------------------------------- [ 38.126200][ T391] sysctl/391 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 38.126442][ T391] ffff888006942c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 38.126711][ T391] [ 38.126711][ T391] and this task is already holding: [ 38.126944][ T391] ffff888005260d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.127223][ T391] which would create a new lock dependency: [ 38.127429][ T391] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 38.127657][ T391] [ 38.127657][ T391] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 38.127892][ T391] (&ndev->lock){++--}-{2:2} [ 38.127896][ T391] [ 38.127896][ T391] ... which became SOFTIRQ-irq-safe at: [ 38.128252][ T391] __lock_acquire+0x797/0x1570 [ 38.128417][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.128561][ T391] _raw_write_lock+0x30/0x40 [ 38.128703][ T391] addrconf_rs_timer+0xa9/0x730 [ 38.128846][ T391] call_timer_fn+0x13b/0x230 [ 38.128995][ T391] __run_timers+0x545/0x810 [ 38.129143][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.129293][ T391] __do_softirq+0x1f8/0x5df [ 38.129451][ T391] irq_exit_rcu+0x97/0xc0 [ 38.129590][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.129735][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.129923][ T391] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.130071][ T391] qlist_free_all+0x4c/0x140 [ 38.130216][ T391] kasan_quarantine_reduce+0x192/0x1e0 [ 38.130363][ T391] __kasan_slab_alloc+0x49/0x70 [ 38.130515][ T391] kmem_cache_alloc+0xef/0x270 [ 38.130671][ T391] p9_tag_alloc+0x99/0x700 [ 38.130819][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.130966][ T391] p9_client_rpc+0x18d/0x930 [ 38.131117][ T391] p9_client_clunk+0x74/0xe0 [ 38.131258][ T391] v9fs_dentry_release+0xb9/0x140 [ 38.131427][ T391] __dentry_kill+0x1d9/0x4f0 [ 38.131570][ T391] dput.part.0+0x333/0x6c0 [ 38.131725][ T391] walk_component+0x199/0x4f0 [ 38.131865][ T391] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.132046][ T391] path_openat+0x1be/0x440 [ 38.132197][ T391] do_filp_open+0x1b3/0x3e0 [ 38.132340][ T391] do_sys_openat2+0x122/0x160 [ 38.132493][ T391] __x64_sys_openat+0x123/0x1e0 [ 38.132636][ T391] do_syscall_64+0xc6/0x1e0 [ 38.132775][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.132950][ T391] [ 38.132950][ T391] to a SOFTIRQ-irq-unsafe lock: [ 38.133138][ T391] (&p->alloc_lock){+.+.}-{2:2} [ 38.133145][ T391] [ 38.133145][ T391] ... which became SOFTIRQ-irq-unsafe at: [ 38.133517][ T391] ... [ 38.133519][ T391] __lock_acquire+0x797/0x1570 [ 38.133745][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.133885][ T391] _raw_spin_lock+0x30/0x40 [ 38.134041][ T391] set_mems_allowed+0x1d/0x210 [ 38.134180][ T391] kernel_init_freeable+0x72/0x310 [ 38.134329][ T391] kernel_init+0x20/0x200 [ 38.134491][ T391] ret_from_fork+0x31/0x70 [ 38.134644][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.134816][ T391] [ 38.134816][ T391] other info that might help us debug this: [ 38.134816][ T391] [ 38.135100][ T391] Possible interrupt unsafe locking scenario: [ 38.135100][ T391] [ 38.135317][ T391] CPU0 CPU1 [ 38.135496][ T391] ---- ---- [ 38.135633][ T391] lock(&p->alloc_lock); [ 38.135741][ T391] local_irq_disable(); [ 38.135912][ T391] lock(&ndev->lock); [ 38.136086][ T391] lock(&p->alloc_lock); [ 38.136273][ T391] [ 38.136398][ T391] lock(&ndev->lock); [ 38.136515][ T391] [ 38.136515][ T391] *** DEADLOCK *** [ 38.136515][ T391] [ 38.136749][ T391] 3 locks held by sysctl/391: [ 38.136913][ T391] #0: ffff888005df43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 38.137201][ T391] #1: ffffffffba9969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 38.137519][ T391] #2: ffff888005260d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.137793][ T391] [ 38.137793][ T391] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 38.138081][ T391] -> (&ndev->lock){++--}-{2:2} { [ 38.138225][ T391] HARDIRQ-ON-W at: [ 38.138334][ T391] __lock_acquire+0x797/0x1570 [ 38.138531][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.138704][ T391] _raw_write_lock_bh+0x38/0x50 [ 38.138882][ T391] addrconf_permanent_addr+0x6e/0x670 [ 38.139059][ T391] addrconf_notify+0x749/0xd60 [ 38.139235][ T391] notifier_call_chain+0xcd/0x150 [ 38.139440][ T391] __dev_notify_flags+0xe6/0x250 [ 38.139640][ T391] dev_change_flags+0xec/0x160 [ 38.139814][ T391] do_setlink+0x7d6/0x21e0 [ 38.139985][ T391] __rtnl_newlink+0xaa7/0xd80 [ 38.140159][ T391] rtnl_newlink+0x63/0xa0 [ 38.140330][ T391] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.140511][ T391] netlink_rcv_skb+0x130/0x360 [ 38.140689][ T391] netlink_unicast+0x449/0x710 [ 38.140862][ T391] netlink_sendmsg+0x723/0xbe0 [ 38.141034][ T391] ____sys_sendmsg+0x7b2/0xa10 [ 38.141209][ T391] ___sys_sendmsg+0xee/0x170 [ 38.141396][ T391] __sys_sendmsg+0xcd/0x170 [ 38.141569][ T391] do_syscall_64+0xc6/0x1e0 [ 38.141743][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.141978][ T391] HARDIRQ-ON-R at: [ 38.142082][ T391] __lock_acquire+0x797/0x1570 [ 38.142269][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.142461][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.142656][ T391] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.142850][ T391] inet6_fill_link_af+0x5e/0xe0 [ 38.143032][ T391] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.143225][ T391] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.143432][ T391] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.143637][ T391] rtmsg_ifinfo+0x5b/0xa0 [ 38.143808][ T391] register_netdevice+0x1177/0x1690 [ 38.143999][ T391] register_netdev+0x20/0x40 [ 38.144177][ T391] sit_init_net+0x250/0x4f0 [ 38.144363][ T391] ops_init+0x9b/0x560 [ 38.144531][ T391] register_pernet_operations+0x2db/0x710 [ 38.144756][ T391] register_pernet_device+0x2a/0x60 [ 38.144928][ T391] sit_init+0x23/0xe0 [ 38.145086][ T391] do_one_initcall+0x8d/0x1e0 [ 38.145274][ T391] do_initcalls+0x1b2/0x3e0 [ 38.145488][ T391] kernel_init_freeable+0x232/0x310 [ 38.145661][ T391] kernel_init+0x20/0x200 [ 38.145845][ T391] ret_from_fork+0x31/0x70 [ 38.146034][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.146222][ T391] IN-SOFTIRQ-W at: [ 38.146327][ T391] __lock_acquire+0x797/0x1570 [ 38.146536][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.146711][ T391] _raw_write_lock+0x30/0x40 [ 38.146899][ T391] addrconf_rs_timer+0xa9/0x730 [ 38.147087][ T391] call_timer_fn+0x13b/0x230 [ 38.147282][ T391] __run_timers+0x545/0x810 [ 38.147471][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.147661][ T391] __do_softirq+0x1f8/0x5df [ 38.147862][ T391] irq_exit_rcu+0x97/0xc0 [ 38.148035][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.148247][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.148476][ T391] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.148698][ T391] qlist_free_all+0x4c/0x140 [ 38.148883][ T391] kasan_quarantine_reduce+0x192/0x1e0 [ 38.149059][ T391] __kasan_slab_alloc+0x49/0x70 [ 38.149241][ T391] kmem_cache_alloc+0xef/0x270 [ 38.149450][ T391] p9_tag_alloc+0x99/0x700 [ 38.149649][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.149824][ T391] p9_client_rpc+0x18d/0x930 [ 38.150009][ T391] p9_client_clunk+0x74/0xe0 [ 38.150183][ T391] v9fs_dentry_release+0xb9/0x140 [ 38.150488][ T391] __dentry_kill+0x1d9/0x4f0 [ 38.150686][ T391] dput.part.0+0x333/0x6c0 [ 38.150860][ T391] walk_component+0x199/0x4f0 [ 38.151033][ T391] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.151238][ T391] path_openat+0x1be/0x440 [ 38.151440][ T391] do_filp_open+0x1b3/0x3e0 [ 38.151619][ T391] do_sys_openat2+0x122/0x160 [ 38.151889][ T391] __x64_sys_openat+0x123/0x1e0 [ 38.152073][ T391] do_syscall_64+0xc6/0x1e0 [ 38.152254][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.152586][ T391] IN-SOFTIRQ-R at: [ 38.152690][ T391] __lock_acquire+0x797/0x1570 [ 38.152882][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.153070][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.153271][ T391] ipv6_get_lladdr+0xa9/0x3e0 [ 38.153467][ T391] addrconf_rs_timer+0x24a/0x730 [ 38.153656][ T391] call_timer_fn+0x13b/0x230 [ 38.153844][ T391] __run_timers+0x545/0x810 [ 38.154017][ T391] run_timer_softirq+0xe8/0x1b0 [ 38.154212][ T391] __do_softirq+0x1f8/0x5df [ 38.154492][ T391] irq_exit_rcu+0x97/0xc0 [ 38.154666][ T391] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.154882][ T391] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.155087][ T391] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.155309][ T391] qlist_free_all+0x4c/0x140 [ 38.155528][ T391] kasan_quarantine_reduce+0x192/0x1e0 [ 38.155702][ T391] __kasan_slab_alloc+0x49/0x70 [ 38.155874][ T391] kmem_cache_alloc+0xef/0x270 [ 38.156045][ T391] p9_tag_alloc+0x99/0x700 [ 38.156216][ T391] p9_client_prepare_req+0xe6/0x290 [ 38.156485][ T391] p9_client_rpc+0x18d/0x930 [ 38.156669][ T391] p9_client_clunk+0x74/0xe0 [ 38.156839][ T391] v9fs_dentry_release+0xb9/0x140 [ 38.157012][ T391] __dentry_kill+0x1d9/0x4f0 [ 38.157194][ T391] dput.part.0+0x333/0x6c0 [ 38.157376][ T391] walk_component+0x199/0x4f0 [ 38.157556][ T391] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.157761][ T391] path_openat+0x1be/0x440 [ 38.157937][ T391] do_filp_open+0x1b3/0x3e0 [ 38.158107][ T391] do_sys_openat2+0x122/0x160 [ 38.158369][ T391] __x64_sys_openat+0x123/0x1e0 [ 38.158554][ T391] do_syscall_64+0xc6/0x1e0 [ 38.158727][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.159015][ T391] INITIAL USE at: [ 38.159121][ T391] __lock_acquire+0x797/0x1570 [ 38.159293][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.159495][ T391] _raw_write_lock_bh+0x38/0x50 [ 38.159750][ T391] addrconf_permanent_addr+0x6e/0x670 [ 38.159921][ T391] addrconf_notify+0x749/0xd60 [ 38.160092][ T391] notifier_call_chain+0xcd/0x150 [ 38.160348][ T391] __dev_notify_flags+0xe6/0x250 [ 38.160535][ T391] dev_change_flags+0xec/0x160 [ 38.160707][ T391] do_setlink+0x7d6/0x21e0 [ 38.160891][ T391] __rtnl_newlink+0xaa7/0xd80 [ 38.161172][ T391] rtnl_newlink+0x63/0xa0 [ 38.161361][ T391] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.161547][ T391] netlink_rcv_skb+0x130/0x360 [ 38.161908][ T391] netlink_unicast+0x449/0x710 [ 38.162079][ T391] netlink_sendmsg+0x723/0xbe0 [ 38.162267][ T391] ____sys_sendmsg+0x7b2/0xa10 [ 38.162458][ T391] ___sys_sendmsg+0xee/0x170 [ 38.162716][ T391] __sys_sendmsg+0xcd/0x170 [ 38.162905][ T391] do_syscall_64+0xc6/0x1e0 [ 38.163079][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.163411][ T391] INITIAL READ USE at: [ 38.163515][ T391] __lock_acquire+0x797/0x1570 [ 38.163698][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.163882][ T391] _raw_read_lock_bh+0x44/0x80 [ 38.164156][ T391] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.164372][ T391] inet6_fill_link_af+0x5e/0xe0 [ 38.164559][ T391] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.164843][ T391] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.165056][ T391] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.165260][ T391] rtmsg_ifinfo+0x5b/0xa0 [ 38.165551][ T391] register_netdevice+0x1177/0x1690 [ 38.165776][ T391] register_netdev+0x20/0x40 [ 38.165953][ T391] sit_init_net+0x250/0x4f0 [ 38.166127][ T391] ops_init+0x9b/0x560 [ 38.166298][ T391] register_pernet_operations+0x2db/0x710 [ 38.166526][ T391] register_pernet_device+0x2a/0x60 [ 38.166752][ T391] sit_init+0x23/0xe0 [ 38.166936][ T391] do_one_initcall+0x8d/0x1e0 [ 38.167144][ T391] do_initcalls+0x1b2/0x3e0 [ 38.167450][ T391] kernel_init_freeable+0x232/0x310 [ 38.167665][ T391] kernel_init+0x20/0x200 [ 38.167854][ T391] ret_from_fork+0x31/0x70 [ 38.168036][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.168220][ T391] } [ 38.168302][ T391] ... key at: [] __key.37+0x0/0x40 [ 38.168524][ T391] [ 38.168524][ T391] the dependencies between the lock to be acquired [ 38.168526][ T391] and SOFTIRQ-irq-unsafe lock: [ 38.168938][ T391] -> (&p->alloc_lock){+.+.}-{2:2} { [ 38.169082][ T391] HARDIRQ-ON-W at: [ 38.169189][ T391] __lock_acquire+0x797/0x1570 [ 38.169488][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.169665][ T391] _raw_spin_lock+0x30/0x40 [ 38.169847][ T391] set_mems_allowed+0x1d/0x210 [ 38.170040][ T391] kernel_init_freeable+0x72/0x310 [ 38.170218][ T391] kernel_init+0x20/0x200 [ 38.170415][ T391] ret_from_fork+0x31/0x70 [ 38.170605][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.170799][ T391] SOFTIRQ-ON-W at: [ 38.170911][ T391] __lock_acquire+0x797/0x1570 [ 38.171097][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.171282][ T391] _raw_spin_lock+0x30/0x40 [ 38.171591][ T391] set_mems_allowed+0x1d/0x210 [ 38.171766][ T391] kernel_init_freeable+0x72/0x310 [ 38.171937][ T391] kernel_init+0x20/0x200 [ 38.172123][ T391] ret_from_fork+0x31/0x70 [ 38.172296][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.172489][ T391] INITIAL USE at: [ 38.172598][ T391] __lock_acquire+0x797/0x1570 [ 38.172870][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.173041][ T391] _raw_spin_lock+0x30/0x40 [ 38.173226][ T391] set_mems_allowed+0x1d/0x210 [ 38.173506][ T391] kernel_init_freeable+0x72/0x310 [ 38.173695][ T391] kernel_init+0x20/0x200 [ 38.173869][ T391] ret_from_fork+0x31/0x70 [ 38.174053][ T391] ret_from_fork_asm+0x1a/0x30 [ 38.174232][ T391] } [ 38.174304][ T391] ... key at: [] __key.387+0x0/0x40 [ 38.174547][ T391] ... acquired at: [ 38.174655][ T391] check_prev_add+0x194/0xce0 [ 38.174819][ T391] validate_chain+0x71d/0x9b0 [ 38.174959][ T391] __lock_acquire+0xaf0/0x1570 [ 38.175104][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.175243][ T391] _raw_spin_lock+0x30/0x40 [ 38.175511][ T391] __get_task_comm+0x27/0x70 [ 38.175651][ T391] ref_tracker_alloc+0x2ee/0x490 [ 38.175791][ T391] netdev_get_by_index+0x5e/0x80 [ 38.175929][ T391] fib6_nh_init+0x3d8/0x15b0 [ 38.176071][ T391] ip6_route_info_create+0xf18/0x17d0 [ 38.176208][ T391] addrconf_f6i_alloc+0x265/0x560 [ 38.176346][ T391] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.176493][ T391] addrconf_join_anycast+0x1c0/0x220 [ 38.176634][ T391] dev_forward_change+0x2a6/0x7b0 [ 38.176772][ T391] addrconf_fixup_forwarding+0x23f/0x460 [ 38.176943][ T391] addrconf_sysctl_forward+0x212/0x2b0 [ 38.177082][ T391] proc_sys_call_handler+0x403/0x5e0 [ 38.177219][ T391] vfs_write+0x9e5/0x10a0 [ 38.177459][ T391] ksys_write+0xf5/0x1e0 [ 38.177598][ T391] do_syscall_64+0xc6/0x1e0 [ 38.177735][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.177905][ T391] [ 38.177976][ T391] [ 38.177976][ T391] stack backtrace: [ 38.178146][ T391] CPU: 3 PID: 391 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 38.178355][ T391] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.178671][ T391] Call Trace: [ 38.178777][ T391] [ 38.178849][ T391] dump_stack_lvl+0x82/0xd0 [ 38.178989][ T391] print_bad_irq_dependency+0x957/0xd40 [ 38.179128][ T391] ? hlock_class+0x4e/0x130 [ 38.179349][ T391] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 38.179550][ T391] ? __pfx_usage_skip+0x10/0x10 [ 38.179685][ T391] ? __bfs+0x246/0x650 [ 38.179788][ T391] ? __pfx_usage_match+0x10/0x10 [ 38.180007][ T391] check_irq_usage+0x596/0x850 [ 38.180146][ T391] ? __pfx_check_irq_usage+0x10/0x10 [ 38.180282][ T391] ? __bfs+0x246/0x650 [ 38.180397][ T391] ? __pfx_hlock_conflict+0x10/0x10 [ 38.180618][ T391] ? check_path.constprop.0+0x24/0x50 [ 38.180755][ T391] ? check_noncircular+0x14c/0x3e0 [ 38.180903][ T391] ? __pfx_check_noncircular+0x10/0x10 [ 38.181062][ T391] ? check_prev_add+0x194/0xce0 [ 38.181198][ T391] check_prev_add+0x194/0xce0 [ 38.181429][ T391] ? validate_chain+0x130/0x9b0 [ 38.181566][ T391] validate_chain+0x71d/0x9b0 [ 38.181703][ T391] ? mark_lock+0x38/0x3e0 [ 38.181806][ T391] ? __pfx_validate_chain+0x10/0x10 [ 38.182024][ T391] ? hlock_class+0x4e/0x130 [ 38.182161][ T391] ? mark_lock+0x38/0x3e0 [ 38.182266][ T391] __lock_acquire+0xaf0/0x1570 [ 38.182420][ T391] lock_acquire.part.0+0xeb/0x330 [ 38.182556][ T391] ? __get_task_comm+0x27/0x70 [ 38.182786][ T391] ? mark_lock+0x38/0x3e0 [ 38.182889][ T391] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.183025][ T391] ? trace_lock_acquire+0x135/0x1c0 [ 38.183174][ T391] ? __get_task_comm+0x27/0x70 [ 38.183533][ T391] ? lock_acquire+0x32/0xc0 [ 38.183676][ T391] ? __get_task_comm+0x27/0x70 [ 38.183812][ T391] _raw_spin_lock+0x30/0x40 [ 38.183948][ T391] ? __get_task_comm+0x27/0x70 [ 38.184082][ T391] __get_task_comm+0x27/0x70 [ 38.184217][ T391] ref_tracker_alloc+0x2ee/0x490 [ 38.184355][ T391] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 38.184499][ T391] ? dev_get_by_index+0x177/0x270 [ 38.184635][ T391] ? netdev_get_by_index+0x5e/0x80 [ 38.184775][ T391] ? fib6_nh_init+0x3d8/0x15b0 [ 38.184912][ T391] ? ip6_route_info_create+0xf18/0x17d0 [ 38.185047][ T391] ? addrconf_f6i_alloc+0x265/0x560 [ 38.185182][ T391] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.185411][ T391] ? addrconf_join_anycast+0x1c0/0x220 [ 38.185548][ T391] ? dev_forward_change+0x2a6/0x7b0 [ 38.185683][ T391] ? addrconf_fixup_forwarding+0x23f/0x460 [ 38.185850][ T391] ? addrconf_sysctl_forward+0x212/0x2b0 [ 38.186070][ T391] ? proc_sys_call_handler+0x403/0x5e0 [ 38.186206][ T391] ? vfs_write+0x9e5/0x10a0 [ 38.186344][ T391] ? ksys_write+0xf5/0x1e0 [ 38.186493][ T391] ? do_syscall_64+0xc6/0x1e0 [ 38.186709][ T391] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.186880][ T391] ? dev_get_by_index+0x177/0x270 [ 38.187016][ T391] netdev_get_by_index+0x5e/0x80 [ 38.187153][ T391] fib6_nh_init+0x3d8/0x15b0 [ 38.187414][ T391] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 38.187584][ T391] ? __pfx_fib6_nh_init+0x10/0x10 [ 38.187720][ T391] ? kasan_save_track+0x14/0x30 [ 38.187857][ T391] ? __kasan_kmalloc+0x7f/0x90 [ 38.188072][ T391] ? __kmalloc+0x1d7/0x3c0 [ 38.188209][ T391] ? fib6_get_table+0x116/0x290 [ 38.188373][ T391] ip6_route_info_create+0xf18/0x17d0 [ 38.188512][ T391] ? __lock_release+0x103/0x460 [ 38.188745][ T391] ? __pfx_ip6_route_info_create+0x10/0x10 [ 38.188933][ T391] ? addrconf_f6i_alloc+0x12d/0x560 [ 38.189070][ T391] addrconf_f6i_alloc+0x265/0x560 [ 38.189215][ T391] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 38.189476][ T391] ? do_raw_write_lock+0x122/0x3b0 [ 38.189624][ T391] ? __pfx_do_raw_write_lock+0x10/0x10 [ 38.189759][ T391] ? lock_acquire+0x32/0xc0 [ 38.189908][ T391] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.190051][ T391] addrconf_join_anycast+0x1c0/0x220 [ 38.190199][ T391] ? mark_lock+0x38/0x3e0 [ 38.190317][ T391] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 38.190506][ T391] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 38.190696][ T391] dev_forward_change+0x2a6/0x7b0 [ 38.190835][ T391] ? __pfx_dev_forward_change+0x10/0x10 [ 38.190973][ T391] addrconf_fixup_forwarding+0x23f/0x460 [ 38.191114][ T391] addrconf_sysctl_forward+0x212/0x2b0 [ 38.191253][ T391] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.191532][ T391] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.191701][ T391] ? trace_kmalloc+0x2a/0xe0 [ 38.191836][ T391] ? __kmalloc_node+0x220/0x400 [ 38.191973][ T391] ? proc_sys_call_handler+0x30b/0x5e0 [ 38.192111][ T391] proc_sys_call_handler+0x403/0x5e0 [ 38.192250][ T391] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 38.192429][ T391] ? __lock_acquire+0xaf0/0x1570 [ 38.192568][ T391] vfs_write+0x9e5/0x10a0 [ 38.192671][ T391] ? do_user_addr_fault+0x449/0xbe0 [ 38.192807][ T391] ? __pfx_vfs_write+0x10/0x10 [ 38.192943][ T391] ? find_held_lock+0x2c/0x110 [ 38.193083][ T391] ? __pfx___lock_release+0x10/0x10 [ 38.193312][ T391] ? __fget_light+0x53/0x1e0 [ 38.193461][ T391] ksys_write+0xf5/0x1e0 [ 38.193570][ T391] ? __pfx_ksys_write+0x10/0x10 [ 38.193716][ T391] ? do_user_addr_fault+0x4bd/0xbe0 [ 38.193853][ T391] do_syscall_64+0xc6/0x1e0 [ 38.194195][ T391] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.194375][ T391] RIP: 0033:0x7fe47b4a8957 [ 38.194556][ T391] 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 [ 38.195190][ T391] RSP: 002b:00007ffcc2fe0f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 38.195438][ T391] RAX: ffffffffffffffda RBX: 0000562d22b73360 RCX: 00007fe47b4a8957 [ 38.195731][ T391] RDX: 0000000000000002 RSI: 0000562d22b733a0 RDI: 0000000000000005 [ 38.195944][ T391] RBP: 0000562d22b754d0 R08: 0000000000000003 R09: 0000000000000077 [ 38.196168][ T391] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 38.196503][ T391] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fe47b55f9c0 [ 38.196725][ T391] [ 38.205309][ T391] sysctl (391) used greatest stack depth: 23960 bytes left