[ 26.229164][ T257] ip (257) used greatest stack depth: 23264 bytes left [ 30.396439][ T294] 8021q: 802.1Q VLAN Support v1.8 [ 31.467980][ T305] gre: GRE over IPv4 demultiplexor driver [ 31.484052][ T305] ip_gre: GRE over IPv4 tunneling driver [ 38.738385][ T371] GACT probability NOT on [ 40.551239][ T387] [ 40.551353][ T387] ===================================================== [ 40.551543][ T387] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.551756][ T387] 6.9.0-rc1-virtme #1 Not tainted [ 40.551900][ T387] ----------------------------------------------------- [ 40.552071][ T387] sysctl/387 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.552275][ T387] ffff88800518ac28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.552551][ T387] [ 40.552551][ T387] and this task is already holding: [ 40.552790][ T387] ffff8880066f3d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.553049][ T387] which would create a new lock dependency: [ 40.553239][ T387] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.553453][ T387] [ 40.553453][ T387] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.553689][ T387] (&ndev->lock){++--}-{2:2} [ 40.553693][ T387] [ 40.553693][ T387] ... which became SOFTIRQ-irq-safe at: [ 40.554042][ T387] __lock_acquire+0x797/0x1570 [ 40.554192][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.554330][ T387] _raw_write_lock+0x30/0x40 [ 40.554473][ T387] addrconf_rs_timer+0xa9/0x730 [ 40.554610][ T387] call_timer_fn+0x13b/0x230 [ 40.554749][ T387] __run_timers+0x545/0x810 [ 40.554883][ T387] run_timer_softirq+0xe8/0x1b0 [ 40.555017][ T387] __do_softirq+0x1f8/0x5df [ 40.555158][ T387] irq_exit_rcu+0x97/0xc0 [ 40.555299][ T387] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.555433][ T387] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.555612][ T387] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.555751][ T387] get_partial_node.part.0+0x1c5/0x3a0 [ 40.555887][ T387] ___slab_alloc+0xb70/0x10a0 [ 40.556030][ T387] __kmalloc+0x34c/0x3c0 [ 40.556162][ T387] p9_fcall_init+0x7d/0x1b0 [ 40.556314][ T387] p9_tag_alloc+0x138/0x700 [ 40.556478][ T387] p9_client_prepare_req+0xe6/0x290 [ 40.556615][ T387] p9_client_rpc+0x18d/0x930 [ 40.556767][ T387] p9_client_read_once+0x1f1/0x860 [ 40.556908][ T387] p9_client_read+0xfd/0x160 [ 40.557047][ T387] v9fs_issue_read+0x104/0x1b0 [ 40.557191][ T387] netfs_rreq_submit_slice+0x3da/0x5f0 [ 40.557329][ T387] netfs_begin_read+0x450/0xb20 [ 40.557482][ T387] netfs_unbuffered_read_iter_locked+0x5c4/0x810 [ 40.557681][ T387] netfs_unbuffered_read_iter+0xaa/0xf0 [ 40.557859][ T387] do_iter_readv_writev+0x42f/0x620 [ 40.557998][ T387] vfs_iter_read+0x122/0x450 [ 40.558136][ T387] backing_file_read_iter+0x4bc/0x6a0 [ 40.558280][ T387] ovl_read_iter+0x1ff/0x270 [ 40.558419][ T387] vfs_read+0x5dd/0xbf0 [ 40.558522][ T387] __x64_sys_pread64+0x197/0x1f0 [ 40.558661][ T387] do_syscall_64+0xc6/0x1e0 [ 40.558803][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.558974][ T387] [ 40.558974][ T387] to a SOFTIRQ-irq-unsafe lock: [ 40.559140][ T387] (&p->alloc_lock){+.+.}-{2:2} [ 40.559145][ T387] [ 40.559145][ T387] ... which became SOFTIRQ-irq-unsafe at: [ 40.559525][ T387] ... [ 40.559527][ T387] __lock_acquire+0x797/0x1570 [ 40.559735][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.559873][ T387] _raw_spin_lock+0x30/0x40 [ 40.560012][ T387] set_mems_allowed+0x1d/0x210 [ 40.560153][ T387] kernel_init_freeable+0x72/0x310 [ 40.560302][ T387] kernel_init+0x20/0x200 [ 40.560450][ T387] ret_from_fork+0x31/0x70 [ 40.560595][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.560746][ T387] [ 40.560746][ T387] other info that might help us debug this: [ 40.560746][ T387] [ 40.561016][ T387] Possible interrupt unsafe locking scenario: [ 40.561016][ T387] [ 40.561220][ T387] CPU0 CPU1 [ 40.561404][ T387] ---- ---- [ 40.561554][ T387] lock(&p->alloc_lock); [ 40.561672][ T387] local_irq_disable(); [ 40.561852][ T387] lock(&ndev->lock); [ 40.562029][ T387] lock(&p->alloc_lock); [ 40.562197][ T387] [ 40.562300][ T387] lock(&ndev->lock); [ 40.562406][ T387] [ 40.562406][ T387] *** DEADLOCK *** [ 40.562406][ T387] [ 40.562608][ T387] 3 locks held by sysctl/387: [ 40.562748][ T387] #0: ffff8880204943f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.563003][ T387] #1: ffffffff863969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.563289][ T387] #2: ffff8880066f3d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.563530][ T387] [ 40.563530][ T387] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.563796][ T387] -> (&ndev->lock){++--}-{2:2} { [ 40.563940][ T387] HARDIRQ-ON-W at: [ 40.564045][ T387] __lock_acquire+0x797/0x1570 [ 40.564226][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.564412][ T387] _raw_write_lock_bh+0x38/0x50 [ 40.564588][ T387] addrconf_permanent_addr+0x6e/0x670 [ 40.564776][ T387] addrconf_notify+0x749/0xd60 [ 40.564959][ T387] notifier_call_chain+0xcd/0x150 [ 40.565135][ T387] __dev_notify_flags+0xe6/0x250 [ 40.565315][ T387] dev_change_flags+0xec/0x160 [ 40.565489][ T387] do_setlink+0x7d6/0x21e0 [ 40.565664][ T387] __rtnl_newlink+0xaa7/0xd80 [ 40.565845][ T387] rtnl_newlink+0x63/0xa0 [ 40.566020][ T387] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.566194][ T387] netlink_rcv_skb+0x130/0x360 [ 40.566369][ T387] netlink_unicast+0x449/0x710 [ 40.566547][ T387] netlink_sendmsg+0x723/0xbe0 [ 40.566723][ T387] ____sys_sendmsg+0x7b2/0xa10 [ 40.566899][ T387] ___sys_sendmsg+0xee/0x170 [ 40.567078][ T387] __sys_sendmsg+0xcd/0x170 [ 40.567258][ T387] do_syscall_64+0xc6/0x1e0 [ 40.567435][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.567648][ T387] HARDIRQ-ON-R at: [ 40.567757][ T387] __lock_acquire+0x797/0x1570 [ 40.567933][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.568106][ T387] _raw_read_lock_bh+0x44/0x80 [ 40.568281][ T387] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.568458][ T387] inet6_fill_link_af+0x5e/0xe0 [ 40.568631][ T387] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.568822][ T387] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.568997][ T387] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.569207][ T387] rtmsg_ifinfo+0x5b/0xa0 [ 40.569394][ T387] register_netdevice+0x1177/0x1690 [ 40.569566][ T387] register_netdev+0x20/0x40 [ 40.569740][ T387] sit_init_net+0x250/0x4f0 [ 40.569922][ T387] ops_init+0x9b/0x560 [ 40.570061][ T387] register_pernet_operations+0x2db/0x710 [ 40.570270][ T387] register_pernet_device+0x2a/0x60 [ 40.570444][ T387] sit_init+0x23/0xe0 [ 40.570586][ T387] do_one_initcall+0x8d/0x1e0 [ 40.570762][ T387] do_initcalls+0x1b2/0x3e0 [ 40.570940][ T387] kernel_init_freeable+0x232/0x310 [ 40.571121][ T387] kernel_init+0x20/0x200 [ 40.571296][ T387] ret_from_fork+0x31/0x70 [ 40.571471][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.571641][ T387] IN-SOFTIRQ-W at: [ 40.571747][ T387] __lock_acquire+0x797/0x1570 [ 40.571920][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.572101][ T387] _raw_write_lock+0x30/0x40 [ 40.572275][ T387] addrconf_rs_timer+0xa9/0x730 [ 40.572449][ T387] call_timer_fn+0x13b/0x230 [ 40.572625][ T387] __run_timers+0x545/0x810 [ 40.572857][ T387] run_timer_softirq+0xe8/0x1b0 [ 40.573105][ T387] __do_softirq+0x1f8/0x5df [ 40.573371][ T387] irq_exit_rcu+0x97/0xc0 [ 40.573658][ T387] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.573987][ T387] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.574319][ T387] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.574813][ T387] get_partial_node.part.0+0x1c5/0x3a0 [ 40.575090][ T387] ___slab_alloc+0xb70/0x10a0 [ 40.575368][ T387] __kmalloc+0x34c/0x3c0 [ 40.575802][ T387] p9_fcall_init+0x7d/0x1b0 [ 40.576085][ T387] p9_tag_alloc+0x138/0x700 [ 40.576337][ T387] p9_client_prepare_req+0xe6/0x290 [ 40.576548][ T387] p9_client_rpc+0x18d/0x930 [ 40.576827][ T387] p9_client_read_once+0x1f1/0x860 [ 40.577011][ T387] p9_client_read+0xfd/0x160 [ 40.577192][ T387] v9fs_issue_read+0x104/0x1b0 [ 40.577540][ T387] netfs_rreq_submit_slice+0x3da/0x5f0 [ 40.577732][ T387] netfs_begin_read+0x450/0xb20 [ 40.577905][ T387] netfs_unbuffered_read_iter_locked+0x5c4/0x810 [ 40.578191][ T387] netfs_unbuffered_read_iter+0xaa/0xf0 [ 40.578393][ T387] do_iter_readv_writev+0x42f/0x620 [ 40.578577][ T387] vfs_iter_read+0x122/0x450 [ 40.578752][ T387] backing_file_read_iter+0x4bc/0x6a0 [ 40.578931][ T387] ovl_read_iter+0x1ff/0x270 [ 40.579099][ T387] vfs_read+0x5dd/0xbf0 [ 40.579277][ T387] __x64_sys_pread64+0x197/0x1f0 [ 40.579530][ T387] do_syscall_64+0xc6/0x1e0 [ 40.579711][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.579917][ T387] IN-SOFTIRQ-R at: [ 40.580025][ T387] __lock_acquire+0x797/0x1570 [ 40.580279][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.580452][ T387] _raw_read_lock_bh+0x44/0x80 [ 40.580621][ T387] ipv6_get_lladdr+0xa9/0x3e0 [ 40.580805][ T387] addrconf_rs_timer+0x24a/0x730 [ 40.580978][ T387] call_timer_fn+0x13b/0x230 [ 40.581149][ T387] __run_timers+0x545/0x810 [ 40.581318][ T387] run_timer_softirq+0xe8/0x1b0 [ 40.581486][ T387] __do_softirq+0x1f8/0x5df [ 40.581667][ T387] irq_exit_rcu+0x97/0xc0 [ 40.581838][ T387] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.582129][ T387] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.582330][ T387] _raw_spin_unlock_irqrestore+0x43/0x70 [ 40.582535][ T387] get_partial_node.part.0+0x1c5/0x3a0 [ 40.582844][ T387] ___slab_alloc+0xb70/0x10a0 [ 40.583013][ T387] __kmalloc+0x34c/0x3c0 [ 40.583181][ T387] p9_fcall_init+0x7d/0x1b0 [ 40.583430][ T387] p9_tag_alloc+0x138/0x700 [ 40.583608][ T387] p9_client_prepare_req+0xe6/0x290 [ 40.583790][ T387] p9_client_rpc+0x18d/0x930 [ 40.584039][ T387] p9_client_read_once+0x1f1/0x860 [ 40.584225][ T387] p9_client_read+0xfd/0x160 [ 40.584394][ T387] v9fs_issue_read+0x104/0x1b0 [ 40.584597][ T387] netfs_rreq_submit_slice+0x3da/0x5f0 [ 40.584867][ T387] netfs_begin_read+0x450/0xb20 [ 40.585039][ T387] netfs_unbuffered_read_iter_locked+0x5c4/0x810 [ 40.585242][ T387] netfs_unbuffered_read_iter+0xaa/0xf0 [ 40.585529][ T387] do_iter_readv_writev+0x42f/0x620 [ 40.585712][ T387] vfs_iter_read+0x122/0x450 [ 40.585883][ T387] backing_file_read_iter+0x4bc/0x6a0 [ 40.586143][ T387] ovl_read_iter+0x1ff/0x270 [ 40.586314][ T387] vfs_read+0x5dd/0xbf0 [ 40.586491][ T387] __x64_sys_pread64+0x197/0x1f0 [ 40.586677][ T387] do_syscall_64+0xc6/0x1e0 [ 40.586948][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.587165][ T387] INITIAL USE at: [ 40.587277][ T387] __lock_acquire+0x797/0x1570 [ 40.587532][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.587714][ T387] _raw_write_lock_bh+0x38/0x50 [ 40.587885][ T387] addrconf_permanent_addr+0x6e/0x670 [ 40.588053][ T387] addrconf_notify+0x749/0xd60 [ 40.588395][ T387] notifier_call_chain+0xcd/0x150 [ 40.588570][ T387] __dev_notify_flags+0xe6/0x250 [ 40.588750][ T387] dev_change_flags+0xec/0x160 [ 40.588918][ T387] do_setlink+0x7d6/0x21e0 [ 40.589086][ T387] __rtnl_newlink+0xaa7/0xd80 [ 40.589273][ T387] rtnl_newlink+0x63/0xa0 [ 40.589458][ T387] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.589629][ T387] netlink_rcv_skb+0x130/0x360 [ 40.589813][ T387] netlink_unicast+0x449/0x710 [ 40.589981][ T387] netlink_sendmsg+0x723/0xbe0 [ 40.590235][ T387] ____sys_sendmsg+0x7b2/0xa10 [ 40.590406][ T387] ___sys_sendmsg+0xee/0x170 [ 40.590578][ T387] __sys_sendmsg+0xcd/0x170 [ 40.590847][ T387] do_syscall_64+0xc6/0x1e0 [ 40.591021][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.591229][ T387] INITIAL READ USE at: [ 40.591331][ T387] __lock_acquire+0x797/0x1570 [ 40.591591][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.591786][ T387] _raw_read_lock_bh+0x44/0x80 [ 40.591956][ T387] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.592250][ T387] inet6_fill_link_af+0x5e/0xe0 [ 40.592426][ T387] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.592598][ T387] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.592810][ T387] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.593013][ T387] rtmsg_ifinfo+0x5b/0xa0 [ 40.593181][ T387] register_netdevice+0x1177/0x1690 [ 40.593393][ T387] register_netdev+0x20/0x40 [ 40.593570][ T387] sit_init_net+0x250/0x4f0 [ 40.593751][ T387] ops_init+0x9b/0x560 [ 40.593922][ T387] register_pernet_operations+0x2db/0x710 [ 40.594207][ T387] register_pernet_device+0x2a/0x60 [ 40.594418][ T387] sit_init+0x23/0xe0 [ 40.594588][ T387] do_one_initcall+0x8d/0x1e0 [ 40.594870][ T387] do_initcalls+0x1b2/0x3e0 [ 40.595043][ T387] kernel_init_freeable+0x232/0x310 [ 40.595243][ T387] kernel_init+0x20/0x200 [ 40.595497][ T387] ret_from_fork+0x31/0x70 [ 40.595689][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.595859][ T387] } [ 40.595936][ T387] ... key at: [] __key.37+0x0/0x40 [ 40.596222][ T387] [ 40.596222][ T387] the dependencies between the lock to be acquired [ 40.596224][ T387] and SOFTIRQ-irq-unsafe lock: [ 40.596583][ T387] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.596819][ T387] HARDIRQ-ON-W at: [ 40.596926][ T387] __lock_acquire+0x797/0x1570 [ 40.597098][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.597272][ T387] _raw_spin_lock+0x30/0x40 [ 40.597526][ T387] set_mems_allowed+0x1d/0x210 [ 40.597702][ T387] kernel_init_freeable+0x72/0x310 [ 40.597872][ T387] kernel_init+0x20/0x200 [ 40.598136][ T387] ret_from_fork+0x31/0x70 [ 40.598305][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.598481][ T387] SOFTIRQ-ON-W at: [ 40.598583][ T387] __lock_acquire+0x797/0x1570 [ 40.598931][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.599100][ T387] _raw_spin_lock+0x30/0x40 [ 40.599280][ T387] set_mems_allowed+0x1d/0x210 [ 40.599575][ T387] kernel_init_freeable+0x72/0x310 [ 40.599760][ T387] kernel_init+0x20/0x200 [ 40.599935][ T387] ret_from_fork+0x31/0x70 [ 40.600105][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.600359][ T387] INITIAL USE at: [ 40.600462][ T387] __lock_acquire+0x797/0x1570 [ 40.600634][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.600802][ T387] _raw_spin_lock+0x30/0x40 [ 40.600971][ T387] set_mems_allowed+0x1d/0x210 [ 40.601145][ T387] kernel_init_freeable+0x72/0x310 [ 40.601312][ T387] kernel_init+0x20/0x200 [ 40.601567][ T387] ret_from_fork+0x31/0x70 [ 40.601735][ T387] ret_from_fork_asm+0x1a/0x30 [ 40.601904][ T387] } [ 40.601978][ T387] ... key at: [] __key.387+0x0/0x40 [ 40.602265][ T387] ... acquired at: [ 40.602378][ T387] check_prev_add+0x194/0xce0 [ 40.602513][ T387] validate_chain+0x71d/0x9b0 [ 40.602647][ T387] __lock_acquire+0xaf0/0x1570 [ 40.602796][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.602931][ T387] _raw_spin_lock+0x30/0x40 [ 40.603064][ T387] __get_task_comm+0x27/0x70 [ 40.603201][ T387] ref_tracker_alloc+0x2ee/0x490 [ 40.603422][ T387] netdev_get_by_index+0x5e/0x80 [ 40.603558][ T387] fib6_nh_init+0x3d8/0x15b0 [ 40.603709][ T387] ip6_route_info_create+0xf18/0x17d0 [ 40.603843][ T387] addrconf_f6i_alloc+0x265/0x560 [ 40.603977][ T387] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.604198][ T387] addrconf_join_anycast+0x1c0/0x220 [ 40.604335][ T387] dev_forward_change+0x2a6/0x7b0 [ 40.604469][ T387] addrconf_fixup_forwarding+0x23f/0x460 [ 40.604636][ T387] addrconf_sysctl_forward+0x212/0x2b0 [ 40.604857][ T387] proc_sys_call_handler+0x403/0x5e0 [ 40.604993][ T387] vfs_write+0x9e5/0x10a0 [ 40.605129][ T387] ksys_write+0xf5/0x1e0 [ 40.605274][ T387] do_syscall_64+0xc6/0x1e0 [ 40.605491][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.605659][ T387] [ 40.605729][ T387] [ 40.605729][ T387] stack backtrace: [ 40.605893][ T387] CPU: 1 PID: 387 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.606181][ T387] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.606595][ T387] Call Trace: [ 40.606714][ T387] [ 40.606869][ T387] dump_stack_lvl+0x82/0xd0 [ 40.607010][ T387] print_bad_irq_dependency+0x957/0xd40 [ 40.607146][ T387] ? hlock_class+0x4e/0x130 [ 40.607299][ T387] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.607573][ T387] ? __pfx_usage_skip+0x10/0x10 [ 40.607706][ T387] ? __bfs+0x246/0x650 [ 40.607807][ T387] ? __pfx_usage_match+0x10/0x10 [ 40.607943][ T387] check_irq_usage+0x596/0x850 [ 40.608079][ T387] ? __pfx_check_irq_usage+0x10/0x10 [ 40.608301][ T387] ? __bfs+0x246/0x650 [ 40.608411][ T387] ? __pfx_hlock_conflict+0x10/0x10 [ 40.608546][ T387] ? check_path.constprop.0+0x24/0x50 [ 40.608682][ T387] ? check_noncircular+0x14c/0x3e0 [ 40.608827][ T387] ? __pfx_check_noncircular+0x10/0x10 [ 40.608965][ T387] ? check_prev_add+0x194/0xce0 [ 40.609099][ T387] check_prev_add+0x194/0xce0 [ 40.609237][ T387] ? validate_chain+0x130/0x9b0 [ 40.609384][ T387] validate_chain+0x71d/0x9b0 [ 40.609605][ T387] ? mark_lock+0x38/0x3e0 [ 40.609707][ T387] ? __pfx_validate_chain+0x10/0x10 [ 40.609842][ T387] ? hlock_class+0x4e/0x130 [ 40.609981][ T387] ? mark_lock+0x38/0x3e0 [ 40.610166][ T387] __lock_acquire+0xaf0/0x1570 [ 40.610306][ T387] lock_acquire.part.0+0xeb/0x330 [ 40.610441][ T387] ? __get_task_comm+0x27/0x70 [ 40.610575][ T387] ? mark_lock+0x38/0x3e0 [ 40.610691][ T387] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.610828][ T387] ? trace_lock_acquire+0x135/0x1c0 [ 40.610987][ T387] ? __get_task_comm+0x27/0x70 [ 40.611131][ T387] ? lock_acquire+0x32/0xc0 [ 40.611265][ T387] ? __get_task_comm+0x27/0x70 [ 40.611490][ T387] _raw_spin_lock+0x30/0x40 [ 40.611641][ T387] ? __get_task_comm+0x27/0x70 [ 40.611775][ T387] __get_task_comm+0x27/0x70 [ 40.611914][ T387] ref_tracker_alloc+0x2ee/0x490 [ 40.612138][ T387] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.612282][ T387] ? dev_get_by_index+0x177/0x270 [ 40.612418][ T387] ? netdev_get_by_index+0x5e/0x80 [ 40.612566][ T387] ? fib6_nh_init+0x3d8/0x15b0 [ 40.612701][ T387] ? ip6_route_info_create+0xf18/0x17d0 [ 40.612918][ T387] ? addrconf_f6i_alloc+0x265/0x560 [ 40.613052][ T387] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.613190][ T387] ? addrconf_join_anycast+0x1c0/0x220 [ 40.613331][ T387] ? dev_forward_change+0x2a6/0x7b0 [ 40.613547][ T387] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.613725][ T387] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.613859][ T387] ? proc_sys_call_handler+0x403/0x5e0 [ 40.613995][ T387] ? vfs_write+0x9e5/0x10a0 [ 40.614214][ T387] ? ksys_write+0xf5/0x1e0 [ 40.614347][ T387] ? do_syscall_64+0xc6/0x1e0 [ 40.614487][ T387] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.614655][ T387] ? dev_get_by_index+0x177/0x270 [ 40.614811][ T387] netdev_get_by_index+0x5e/0x80 [ 40.614945][ T387] fib6_nh_init+0x3d8/0x15b0 [ 40.615088][ T387] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.615256][ T387] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.615471][ T387] ? kasan_save_track+0x14/0x30 [ 40.615606][ T387] ? __kasan_kmalloc+0x7f/0x90 [ 40.615741][ T387] ? __kmalloc+0x1d7/0x3c0 [ 40.615875][ T387] ? fib6_get_table+0x116/0x290 [ 40.616096][ T387] ip6_route_info_create+0xf18/0x17d0 [ 40.616230][ T387] ? __lock_release+0x103/0x460 [ 40.616400][ T387] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.616579][ T387] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.616800][ T387] addrconf_f6i_alloc+0x265/0x560 [ 40.616935][ T387] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.617075][ T387] ? do_raw_write_lock+0x122/0x3b0 [ 40.617208][ T387] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.617426][ T387] ? lock_acquire+0x32/0xc0 [ 40.617577][ T387] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.617721][ T387] addrconf_join_anycast+0x1c0/0x220 [ 40.617857][ T387] ? mark_lock+0x38/0x3e0 [ 40.617962][ T387] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.618211][ T387] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.618379][ T387] dev_forward_change+0x2a6/0x7b0 [ 40.618515][ T387] ? __pfx_dev_forward_change+0x10/0x10 [ 40.618654][ T387] addrconf_fixup_forwarding+0x23f/0x460 [ 40.618890][ T387] addrconf_sysctl_forward+0x212/0x2b0 [ 40.619028][ T387] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.619195][ T387] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.619457][ T387] ? trace_kmalloc+0x2a/0xe0 [ 40.619592][ T387] ? __kmalloc_node+0x220/0x400 [ 40.619726][ T387] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.619864][ T387] proc_sys_call_handler+0x403/0x5e0 [ 40.620022][ T387] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.620387][ T387] ? __lock_acquire+0xaf0/0x1570 [ 40.620524][ T387] vfs_write+0x9e5/0x10a0 [ 40.620629][ T387] ? do_user_addr_fault+0x449/0xbe0 [ 40.620763][ T387] ? __pfx_vfs_write+0x10/0x10 [ 40.620904][ T387] ? find_held_lock+0x2c/0x110 [ 40.621043][ T387] ? __pfx___lock_release+0x10/0x10 [ 40.621178][ T387] ? __fget_light+0x53/0x1e0 [ 40.621314][ T387] ksys_write+0xf5/0x1e0 [ 40.621420][ T387] ? __pfx_ksys_write+0x10/0x10 [ 40.621554][ T387] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.621695][ T387] do_syscall_64+0xc6/0x1e0 [ 40.621830][ T387] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.622080][ T387] RIP: 0033:0x7f06ba006957 [ 40.622224][ T387] 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 [ 40.622811][ T387] RSP: 002b:00007ffdb8453558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.623020][ T387] RAX: ffffffffffffffda RBX: 0000564df8dbb360 RCX: 00007f06ba006957 [ 40.623228][ T387] RDX: 0000000000000002 RSI: 0000564df8dbb3a0 RDI: 0000000000000005 [ 40.623519][ T387] RBP: 0000564df8dbd4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.623725][ T387] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.623931][ T387] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f06ba0bd9c0 [ 40.624226][ T387]