[ 30.875233][ T309] gre: GRE over IPv4 demultiplexor driver [ 30.927883][ T309] ip6_gre: GRE over IPv6 tunneling driver [ 31.214116][ T315] ip (315) used greatest stack depth: 23424 bytes left [ 33.060552][ T331] 8021q: 802.1Q VLAN Support v1.8 [ 37.104396][ T369] GACT probability NOT on [ 40.876358][ T402] [ 40.876557][ T402] ===================================================== [ 40.876821][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 40.877039][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 40.877184][ T402] ----------------------------------------------------- [ 40.877367][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 40.877588][ T402] ffff888002460968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 40.877845][ T402] [ 40.877845][ T402] and this task is already holding: [ 40.878066][ T402] ffff8880059d6d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.878328][ T402] which would create a new lock dependency: [ 40.878507][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 40.878737][ T402] [ 40.878737][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 40.878989][ T402] (&ndev->lock){++--}-{2:2} [ 40.878993][ T402] [ 40.878993][ T402] ... which became SOFTIRQ-irq-safe at: [ 40.879346][ T402] __lock_acquire+0x797/0x1570 [ 40.879496][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.879650][ T402] _raw_write_lock+0x30/0x40 [ 40.879804][ T402] addrconf_rs_timer+0xa9/0x730 [ 40.879940][ T402] call_timer_fn+0x13b/0x230 [ 40.880092][ T402] __run_timers+0x545/0x810 [ 40.880229][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.880381][ T402] __do_softirq+0x1f8/0x5df [ 40.880516][ T402] irq_exit_rcu+0x97/0xc0 [ 40.880679][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.880820][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.880989][ T402] unwind_next_frame+0xb1/0x1d00 [ 40.881128][ T402] arch_stack_walk+0x8c/0xf0 [ 40.881270][ T402] stack_trace_save+0x94/0xd0 [ 40.881406][ T402] set_track_prepare+0x31/0x70 [ 40.881543][ T402] free_to_partial_list+0x1db/0x340 [ 40.881687][ T402] qlist_free_all+0x4c/0x140 [ 40.881851][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.881992][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.882142][ T402] kmem_cache_alloc+0xef/0x270 [ 40.882279][ T402] p9_tag_alloc+0x99/0x700 [ 40.882416][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.882550][ T402] p9_client_rpc+0x18d/0x930 [ 40.882704][ T402] p9_client_clunk+0x74/0xe0 [ 40.882841][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.882977][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.883119][ T402] dput.part.0+0x333/0x6c0 [ 40.883264][ T402] walk_component+0x199/0x4f0 [ 40.883399][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.883576][ T402] path_openat+0x1be/0x440 [ 40.883795][ T402] do_filp_open+0x1b3/0x3e0 [ 40.883952][ T402] do_sys_openat2+0x122/0x160 [ 40.884089][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.884226][ T402] do_syscall_64+0xc6/0x1e0 [ 40.884364][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.884533][ T402] [ 40.884533][ T402] to a SOFTIRQ-irq-unsafe lock: [ 40.884710][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 40.884715][ T402] [ 40.884715][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 40.885048][ T402] ... [ 40.885049][ T402] __lock_acquire+0x797/0x1570 [ 40.885257][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.885393][ T402] _raw_spin_lock+0x30/0x40 [ 40.885530][ T402] set_mems_allowed+0x1d/0x210 [ 40.885681][ T402] kernel_init_freeable+0x72/0x310 [ 40.885819][ T402] kernel_init+0x20/0x200 [ 40.885954][ T402] ret_from_fork+0x31/0x70 [ 40.886094][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.886232][ T402] [ 40.886232][ T402] other info that might help us debug this: [ 40.886232][ T402] [ 40.886493][ T402] Possible interrupt unsafe locking scenario: [ 40.886493][ T402] [ 40.886718][ T402] CPU0 CPU1 [ 40.886857][ T402] ---- ---- [ 40.886993][ T402] lock(&p->alloc_lock); [ 40.887098][ T402] local_irq_disable(); [ 40.887268][ T402] lock(&ndev->lock); [ 40.887437][ T402] lock(&p->alloc_lock); [ 40.887612][ T402] [ 40.887714][ T402] lock(&ndev->lock); [ 40.887824][ T402] [ 40.887824][ T402] *** DEADLOCK *** [ 40.887824][ T402] [ 40.888033][ T402] 3 locks held by sysctl/402: [ 40.888169][ T402] #0: ffff888026dec3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 40.888432][ T402] #1: ffffffffbd7969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 40.888729][ T402] #2: ffff8880059d6d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 40.889003][ T402] [ 40.889003][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 40.889290][ T402] -> (&ndev->lock){++--}-{2:2} { [ 40.889434][ T402] HARDIRQ-ON-W at: [ 40.889551][ T402] __lock_acquire+0x797/0x1570 [ 40.889743][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.889936][ T402] _raw_write_lock_bh+0x38/0x50 [ 40.890134][ T402] addrconf_permanent_addr+0x6e/0x670 [ 40.890306][ T402] addrconf_notify+0x749/0xd60 [ 40.890480][ T402] notifier_call_chain+0xcd/0x150 [ 40.890670][ T402] __dev_notify_flags+0xe6/0x250 [ 40.890844][ T402] dev_change_flags+0xec/0x160 [ 40.891017][ T402] do_setlink+0x7d6/0x21e0 [ 40.891210][ T402] __rtnl_newlink+0xaa7/0xd80 [ 40.891401][ T402] rtnl_newlink+0x63/0xa0 [ 40.891590][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.891857][ T402] netlink_rcv_skb+0x130/0x360 [ 40.892031][ T402] netlink_unicast+0x449/0x710 [ 40.892203][ T402] netlink_sendmsg+0x723/0xbe0 [ 40.892376][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 40.892556][ T402] ___sys_sendmsg+0xee/0x170 [ 40.892756][ T402] __sys_sendmsg+0xcd/0x170 [ 40.892930][ T402] do_syscall_64+0xc6/0x1e0 [ 40.893119][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.893338][ T402] HARDIRQ-ON-R at: [ 40.893445][ T402] __lock_acquire+0x797/0x1570 [ 40.893651][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.893832][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.894021][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.894205][ T402] inet6_fill_link_af+0x5e/0xe0 [ 40.894378][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.894578][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.894759][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.894971][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 40.895144][ T402] register_netdevice+0x1177/0x1690 [ 40.895317][ T402] register_netdev+0x20/0x40 [ 40.895502][ T402] sit_init_net+0x250/0x4f0 [ 40.895695][ T402] ops_init+0x9b/0x560 [ 40.895847][ T402] register_pernet_operations+0x2db/0x710 [ 40.896070][ T402] register_pernet_device+0x2a/0x60 [ 40.896250][ T402] sit_init+0x23/0xe0 [ 40.896404][ T402] do_one_initcall+0x8d/0x1e0 [ 40.896601][ T402] do_initcalls+0x1b2/0x3e0 [ 40.896786][ T402] kernel_init_freeable+0x232/0x310 [ 40.896977][ T402] kernel_init+0x20/0x200 [ 40.897163][ T402] ret_from_fork+0x31/0x70 [ 40.897346][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.897538][ T402] IN-SOFTIRQ-W at: [ 40.897655][ T402] __lock_acquire+0x797/0x1570 [ 40.897849][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.898051][ T402] _raw_write_lock+0x30/0x40 [ 40.898225][ T402] addrconf_rs_timer+0xa9/0x730 [ 40.898402][ T402] call_timer_fn+0x13b/0x230 [ 40.898584][ T402] __run_timers+0x545/0x810 [ 40.898871][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.899044][ T402] __do_softirq+0x1f8/0x5df [ 40.899232][ T402] irq_exit_rcu+0x97/0xc0 [ 40.899505][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.899765][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.899989][ T402] unwind_next_frame+0xb1/0x1d00 [ 40.900245][ T402] arch_stack_walk+0x8c/0xf0 [ 40.900417][ T402] stack_trace_save+0x94/0xd0 [ 40.900613][ T402] set_track_prepare+0x31/0x70 [ 40.900897][ T402] free_to_partial_list+0x1db/0x340 [ 40.901072][ T402] qlist_free_all+0x4c/0x140 [ 40.901266][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.901438][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.901720][ T402] kmem_cache_alloc+0xef/0x270 [ 40.901913][ T402] p9_tag_alloc+0x99/0x700 [ 40.902101][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.902355][ T402] p9_client_rpc+0x18d/0x930 [ 40.902542][ T402] p9_client_clunk+0x74/0xe0 [ 40.902732][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.902924][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.903180][ T402] dput.part.0+0x333/0x6c0 [ 40.903350][ T402] walk_component+0x199/0x4f0 [ 40.903534][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.903766][ T402] path_openat+0x1be/0x440 [ 40.903970][ T402] do_filp_open+0x1b3/0x3e0 [ 40.904172][ T402] do_sys_openat2+0x122/0x160 [ 40.904361][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.904565][ T402] do_syscall_64+0xc6/0x1e0 [ 40.904790][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.905127][ T402] IN-SOFTIRQ-R at: [ 40.905256][ T402] __lock_acquire+0x797/0x1570 [ 40.905464][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.905684][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.905872][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 40.906067][ T402] addrconf_rs_timer+0x24a/0x730 [ 40.906238][ T402] call_timer_fn+0x13b/0x230 [ 40.906427][ T402] __run_timers+0x545/0x810 [ 40.906615][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.906792][ T402] __do_softirq+0x1f8/0x5df [ 40.906964][ T402] irq_exit_rcu+0x97/0xc0 [ 40.907229][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.907436][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.907675][ T402] unwind_next_frame+0xb1/0x1d00 [ 40.907852][ T402] arch_stack_walk+0x8c/0xf0 [ 40.908035][ T402] stack_trace_save+0x94/0xd0 [ 40.908208][ T402] set_track_prepare+0x31/0x70 [ 40.908470][ T402] free_to_partial_list+0x1db/0x340 [ 40.908649][ T402] qlist_free_all+0x4c/0x140 [ 40.908824][ T402] kasan_quarantine_reduce+0x192/0x1e0 [ 40.908999][ T402] __kasan_slab_alloc+0x49/0x70 [ 40.909260][ T402] kmem_cache_alloc+0xef/0x270 [ 40.909432][ T402] p9_tag_alloc+0x99/0x700 [ 40.909611][ T402] p9_client_prepare_req+0xe6/0x290 [ 40.909785][ T402] p9_client_rpc+0x18d/0x930 [ 40.909957][ T402] p9_client_clunk+0x74/0xe0 [ 40.910128][ T402] v9fs_dentry_release+0xb9/0x140 [ 40.910307][ T402] __dentry_kill+0x1d9/0x4f0 [ 40.910480][ T402] dput.part.0+0x333/0x6c0 [ 40.910668][ T402] walk_component+0x199/0x4f0 [ 40.910841][ T402] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 40.911130][ T402] path_openat+0x1be/0x440 [ 40.911302][ T402] do_filp_open+0x1b3/0x3e0 [ 40.911478][ T402] do_sys_openat2+0x122/0x160 [ 40.911744][ T402] __x64_sys_openat+0x123/0x1e0 [ 40.911916][ T402] do_syscall_64+0xc6/0x1e0 [ 40.912090][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.912379][ T402] INITIAL USE at: [ 40.912483][ T402] __lock_acquire+0x797/0x1570 [ 40.912679][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.912857][ T402] _raw_write_lock_bh+0x38/0x50 [ 40.913141][ T402] addrconf_permanent_addr+0x6e/0x670 [ 40.913323][ T402] addrconf_notify+0x749/0xd60 [ 40.913507][ T402] notifier_call_chain+0xcd/0x150 [ 40.913691][ T402] __dev_notify_flags+0xe6/0x250 [ 40.913883][ T402] dev_change_flags+0xec/0x160 [ 40.914069][ T402] do_setlink+0x7d6/0x21e0 [ 40.914249][ T402] __rtnl_newlink+0xaa7/0xd80 [ 40.914434][ T402] rtnl_newlink+0x63/0xa0 [ 40.914622][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.914812][ T402] netlink_rcv_skb+0x130/0x360 [ 40.915086][ T402] netlink_unicast+0x449/0x710 [ 40.915259][ T402] netlink_sendmsg+0x723/0xbe0 [ 40.915435][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 40.915638][ T402] ___sys_sendmsg+0xee/0x170 [ 40.915835][ T402] __sys_sendmsg+0xcd/0x170 [ 40.916005][ T402] do_syscall_64+0xc6/0x1e0 [ 40.916175][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.916383][ T402] INITIAL READ USE at: [ 40.916486][ T402] __lock_acquire+0x797/0x1570 [ 40.916671][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.916843][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.917100][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.917304][ T402] inet6_fill_link_af+0x5e/0xe0 [ 40.917473][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.917737][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.917942][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.918177][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 40.918512][ T402] register_netdevice+0x1177/0x1690 [ 40.918734][ T402] register_netdev+0x20/0x40 [ 40.918906][ T402] sit_init_net+0x250/0x4f0 [ 40.919175][ T402] ops_init+0x9b/0x560 [ 40.919364][ T402] register_pernet_operations+0x2db/0x710 [ 40.919587][ T402] register_pernet_device+0x2a/0x60 [ 40.919793][ T402] sit_init+0x23/0xe0 [ 40.919981][ T402] do_one_initcall+0x8d/0x1e0 [ 40.920156][ T402] do_initcalls+0x1b2/0x3e0 [ 40.920352][ T402] kernel_init_freeable+0x232/0x310 [ 40.920563][ T402] kernel_init+0x20/0x200 [ 40.920752][ T402] ret_from_fork+0x31/0x70 [ 40.920926][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.921190][ T402] } [ 40.921261][ T402] ... key at: [] __key.37+0x0/0x40 [ 40.921466][ T402] [ 40.921466][ T402] the dependencies between the lock to be acquired [ 40.921468][ T402] and SOFTIRQ-irq-unsafe lock: [ 40.921845][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.921988][ T402] HARDIRQ-ON-W at: [ 40.922092][ T402] __lock_acquire+0x797/0x1570 [ 40.922266][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.922435][ T402] _raw_spin_lock+0x30/0x40 [ 40.922621][ T402] set_mems_allowed+0x1d/0x210 [ 40.922793][ T402] kernel_init_freeable+0x72/0x310 [ 40.923047][ T402] kernel_init+0x20/0x200 [ 40.923221][ T402] ret_from_fork+0x31/0x70 [ 40.923391][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.923658][ T402] SOFTIRQ-ON-W at: [ 40.923762][ T402] __lock_acquire+0x797/0x1570 [ 40.923937][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.924106][ T402] _raw_spin_lock+0x30/0x40 [ 40.924359][ T402] set_mems_allowed+0x1d/0x210 [ 40.924540][ T402] kernel_init_freeable+0x72/0x310 [ 40.924773][ T402] kernel_init+0x20/0x200 [ 40.925037][ T402] ret_from_fork+0x31/0x70 [ 40.925218][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.925395][ T402] INITIAL USE at: [ 40.925498][ T402] __lock_acquire+0x797/0x1570 [ 40.925767][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.925961][ T402] _raw_spin_lock+0x30/0x40 [ 40.926133][ T402] set_mems_allowed+0x1d/0x210 [ 40.926328][ T402] kernel_init_freeable+0x72/0x310 [ 40.926621][ T402] kernel_init+0x20/0x200 [ 40.926797][ T402] ret_from_fork+0x31/0x70 [ 40.926982][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.927265][ T402] } [ 40.927344][ T402] ... key at: [] __key.387+0x0/0x40 [ 40.927552][ T402] ... acquired at: [ 40.927684][ T402] check_prev_add+0x194/0xce0 [ 40.927826][ T402] validate_chain+0x71d/0x9b0 [ 40.927979][ T402] __lock_acquire+0xaf0/0x1570 [ 40.928131][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.928296][ T402] _raw_spin_lock+0x30/0x40 [ 40.928434][ T402] __get_task_comm+0x27/0x70 [ 40.928682][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.928822][ T402] netdev_get_by_index+0x5e/0x80 [ 40.928979][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.929128][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.929468][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.929640][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.929820][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.929960][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.930215][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.930407][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.930569][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.930726][ T402] vfs_write+0x9e5/0x10a0 [ 40.930967][ T402] ksys_write+0xf5/0x1e0 [ 40.931105][ T402] do_syscall_64+0xc6/0x1e0 [ 40.931256][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.931427][ T402] [ 40.931498][ T402] [ 40.931498][ T402] stack backtrace: [ 40.931784][ T402] CPU: 1 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.931990][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.932392][ T402] Call Trace: [ 40.932512][ T402] [ 40.932596][ T402] dump_stack_lvl+0x82/0xd0 [ 40.932738][ T402] print_bad_irq_dependency+0x957/0xd40 [ 40.932876][ T402] ? hlock_class+0x4e/0x130 [ 40.933113][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.933285][ T402] ? __pfx_usage_skip+0x10/0x10 [ 40.933431][ T402] ? __bfs+0x246/0x650 [ 40.933541][ T402] ? __pfx_usage_match+0x10/0x10 [ 40.933773][ T402] check_irq_usage+0x596/0x850 [ 40.933923][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 40.934060][ T402] ? __bfs+0x246/0x650 [ 40.934174][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 40.934313][ T402] ? check_path.constprop.0+0x24/0x50 [ 40.934547][ T402] ? check_noncircular+0x14c/0x3e0 [ 40.934703][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 40.934847][ T402] ? check_prev_add+0x194/0xce0 [ 40.934992][ T402] check_prev_add+0x194/0xce0 [ 40.935229][ T402] ? validate_chain+0x130/0x9b0 [ 40.935366][ T402] validate_chain+0x71d/0x9b0 [ 40.935504][ T402] ? mark_lock+0x38/0x3e0 [ 40.935631][ T402] ? __pfx_validate_chain+0x10/0x10 [ 40.935770][ T402] ? hlock_class+0x4e/0x130 [ 40.935929][ T402] ? mark_lock+0x38/0x3e0 [ 40.936050][ T402] __lock_acquire+0xaf0/0x1570 [ 40.936206][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.936356][ T402] ? __get_task_comm+0x27/0x70 [ 40.936509][ T402] ? mark_lock+0x38/0x3e0 [ 40.936633][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.936784][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 40.936936][ T402] ? __get_task_comm+0x27/0x70 [ 40.937174][ T402] ? lock_acquire+0x32/0xc0 [ 40.937332][ T402] ? __get_task_comm+0x27/0x70 [ 40.937482][ T402] _raw_spin_lock+0x30/0x40 [ 40.937649][ T402] ? __get_task_comm+0x27/0x70 [ 40.937810][ T402] __get_task_comm+0x27/0x70 [ 40.938053][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.938219][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.938372][ T402] ? dev_get_by_index+0x177/0x270 [ 40.938521][ T402] ? netdev_get_by_index+0x5e/0x80 [ 40.938861][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 40.939085][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 40.939307][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 40.939531][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.939899][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 40.940120][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 40.940343][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.940618][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.940992][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 40.941222][ T402] ? vfs_write+0x9e5/0x10a0 [ 40.941446][ T402] ? ksys_write+0xf5/0x1e0 [ 40.941656][ T402] ? do_syscall_64+0xc6/0x1e0 [ 40.942126][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.942301][ T402] ? dev_get_by_index+0x177/0x270 [ 40.942456][ T402] netdev_get_by_index+0x5e/0x80 [ 40.942608][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.942747][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.942938][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.943074][ T402] ? kasan_save_track+0x14/0x30 [ 40.943212][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 40.943350][ T402] ? __kmalloc+0x1d7/0x3c0 [ 40.943500][ T402] ? fib6_get_table+0x116/0x290 [ 40.943653][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.943791][ T402] ? __lock_release+0x103/0x460 [ 40.943940][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.944211][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.944352][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.944821][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.944982][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 40.945118][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.945270][ T402] ? lock_acquire+0x32/0xc0 [ 40.945408][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.945563][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.945747][ T402] ? mark_lock+0x38/0x3e0 [ 40.945872][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.946048][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.946233][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.946718][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 40.946858][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.946996][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.947134][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.947388][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.947556][ T402] ? trace_kmalloc+0x2a/0xe0 [ 40.947700][ T402] ? __kmalloc_node+0x220/0x400 [ 40.947837][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.948073][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.948219][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.948393][ T402] ? __lock_acquire+0xaf0/0x1570 [ 40.948532][ T402] vfs_write+0x9e5/0x10a0 [ 40.948728][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 40.948884][ T402] ? __pfx_vfs_write+0x10/0x10 [ 40.949020][ T402] ? find_held_lock+0x2c/0x110 [ 40.949158][ T402] ? __pfx___lock_release+0x10/0x10 [ 40.949388][ T402] ? __fget_light+0x53/0x1e0 [ 40.949524][ T402] ksys_write+0xf5/0x1e0 [ 40.949636][ T402] ? __pfx_ksys_write+0x10/0x10 [ 40.949771][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.949941][ T402] do_syscall_64+0xc6/0x1e0 [ 40.950172][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.950361][ T402] RIP: 0033:0x7f88cc9a0957 [ 40.950510][ 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 [ 40.951017][ T402] RSP: 002b:00007ffc94c613a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.951234][ T402] RAX: ffffffffffffffda RBX: 000055c9afd9e360 RCX: 00007f88cc9a0957 [ 40.951441][ T402] RDX: 0000000000000002 RSI: 000055c9afd9e3a0 RDI: 0000000000000005 [ 40.951651][ T402] RBP: 000055c9afda04d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.951864][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.952168][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f88cca579c0 [ 40.952388][ T402]