[ 34.840064][ T343] [ 34.840180][ T343] ===================================================== [ 34.840367][ T343] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 34.840592][ T343] 6.9.0-rc1-virtme #1 Not tainted [ 34.840749][ T343] ----------------------------------------------------- [ 34.840933][ T343] sysctl/343 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 34.841158][ T343] ffff888005a08968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 34.841433][ T343] [ 34.841433][ T343] and this task is already holding: [ 34.841658][ T343] ffff888004aa2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 34.841936][ T343] which would create a new lock dependency: [ 34.842122][ T343] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 34.842353][ T343] [ 34.842353][ T343] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 34.842609][ T343] (&ndev->lock){++--}-{2:2} [ 34.842613][ T343] [ 34.842613][ T343] ... which became SOFTIRQ-irq-safe at: [ 34.842990][ T343] __lock_acquire+0x797/0x1570 [ 34.843149][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.843300][ T343] _raw_write_lock+0x30/0x40 [ 34.843453][ T343] addrconf_rs_timer+0xa9/0x730 [ 34.843602][ T343] call_timer_fn+0x13b/0x230 [ 34.843758][ T343] __run_timers+0x545/0x810 [ 34.843910][ T343] timer_expire_remote+0x9b/0xe0 [ 34.844062][ T343] tmigr_handle_remote_cpu+0x270/0x430 [ 34.844218][ T343] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.844365][ T343] tmigr_handle_remote+0x21d/0x3a0 [ 34.844513][ T343] __do_softirq+0x1f8/0x5df [ 34.844661][ T343] irq_exit_rcu+0x97/0xc0 [ 34.844817][ T343] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.844965][ T343] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.845154][ T343] _raw_spin_unlock_irqrestore+0x43/0x70 [ 34.845303][ T343] get_partial_node.part.0+0x1c5/0x3a0 [ 34.845458][ T343] ___slab_alloc+0xb70/0x10a0 [ 34.845614][ T343] __kmalloc+0x34c/0x3c0 [ 34.845740][ T343] p9_fcall_init+0x7d/0x1b0 [ 34.845888][ T343] p9_tag_alloc+0x138/0x700 [ 34.846034][ T343] p9_client_prepare_req+0xe6/0x290 [ 34.846181][ T343] p9_client_rpc+0x18d/0x930 [ 34.846328][ T343] p9_client_clunk+0x74/0xe0 [ 34.846481][ T343] v9fs_dentry_release+0xb9/0x140 [ 34.846635][ T343] __dentry_kill+0x1d9/0x4f0 [ 34.846792][ T343] dput.part.0+0x333/0x6c0 [ 34.846941][ T343] walk_component+0x199/0x4f0 [ 34.847095][ T343] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.847282][ T343] path_openat+0x1be/0x440 [ 34.847433][ T343] do_filp_open+0x1b3/0x3e0 [ 34.847582][ T343] do_sys_openat2+0x122/0x160 [ 34.847751][ T343] __x64_sys_openat+0x123/0x1e0 [ 34.847945][ T343] do_syscall_64+0xc6/0x1e0 [ 34.848099][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.848287][ T343] [ 34.848287][ T343] to a SOFTIRQ-irq-unsafe lock: [ 34.848473][ T343] (&p->alloc_lock){+.+.}-{2:2} [ 34.848477][ T343] [ 34.848477][ T343] ... which became SOFTIRQ-irq-unsafe at: [ 34.848850][ T343] ... [ 34.848852][ T343] __lock_acquire+0x797/0x1570 [ 34.849082][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.849233][ T343] _raw_spin_lock+0x30/0x40 [ 34.849389][ T343] set_mems_allowed+0x1d/0x210 [ 34.849543][ T343] kernel_init_freeable+0x72/0x310 [ 34.849718][ T343] kernel_init+0x20/0x200 [ 34.849869][ T343] ret_from_fork+0x31/0x70 [ 34.850019][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.850169][ T343] [ 34.850169][ T343] other info that might help us debug this: [ 34.850169][ T343] [ 34.850464][ T343] Possible interrupt unsafe locking scenario: [ 34.850464][ T343] [ 34.850687][ T343] CPU0 CPU1 [ 34.850845][ T343] ---- ---- [ 34.850995][ T343] lock(&p->alloc_lock); [ 34.851110][ T343] local_irq_disable(); [ 34.851294][ T343] lock(&ndev->lock); [ 34.851479][ T343] lock(&p->alloc_lock); [ 34.851672][ T343] [ 34.851789][ T343] lock(&ndev->lock); [ 34.851901][ T343] [ 34.851901][ T343] *** DEADLOCK *** [ 34.851901][ T343] [ 34.852121][ T343] 3 locks held by sysctl/343: [ 34.852275][ T343] #0: ffff888005f543f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 34.852550][ T343] #1: ffffffffb35969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 34.852900][ T343] #2: ffff888004aa2580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 34.853175][ T343] [ 34.853175][ T343] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 34.853471][ T343] -> (&ndev->lock){++--}-{2:2} { [ 34.853628][ T343] HARDIRQ-ON-W at: [ 34.853751][ T343] __lock_acquire+0x797/0x1570 [ 34.853949][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.854138][ T343] _raw_write_lock_bh+0x38/0x50 [ 34.854417][ T343] addrconf_permanent_addr+0x6e/0x670 [ 34.854601][ T343] addrconf_notify+0x749/0xd60 [ 34.854793][ T343] notifier_call_chain+0xcd/0x150 [ 34.854984][ T343] __dev_notify_flags+0xe6/0x250 [ 34.855256][ T343] dev_change_flags+0xec/0x160 [ 34.855448][ T343] do_setlink+0x7d6/0x21e0 [ 34.855637][ T343] __rtnl_newlink+0xaa7/0xd80 [ 34.855911][ T343] rtnl_newlink+0x63/0xa0 [ 34.856102][ T343] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.856291][ T343] netlink_rcv_skb+0x130/0x360 [ 34.856565][ T343] netlink_unicast+0x449/0x710 [ 34.856756][ T343] netlink_sendmsg+0x723/0xbe0 [ 34.856945][ T343] ____sys_sendmsg+0x7b2/0xa10 [ 34.857135][ T343] ___sys_sendmsg+0xee/0x170 [ 34.857404][ T343] __sys_sendmsg+0xcd/0x170 [ 34.857592][ T343] do_syscall_64+0xc6/0x1e0 [ 34.857788][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.858097][ T343] HARDIRQ-ON-R at: [ 34.858216][ T343] __lock_acquire+0x797/0x1570 [ 34.858408][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.858595][ T343] _raw_read_lock_bh+0x44/0x80 [ 34.858874][ T343] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.859059][ T343] inet6_fill_link_af+0x5e/0xe0 [ 34.859248][ T343] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.859563][ T343] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.859771][ T343] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.859995][ T343] rtmsg_ifinfo+0x5b/0xa0 [ 34.860183][ T343] register_netdevice+0x1177/0x1690 [ 34.860372][ T343] register_netdev+0x20/0x40 [ 34.860559][ T343] sit_init_net+0x250/0x4f0 [ 34.860756][ T343] ops_init+0x9b/0x560 [ 34.860914][ T343] register_pernet_operations+0x2db/0x710 [ 34.861138][ T343] register_pernet_device+0x2a/0x60 [ 34.861326][ T343] sit_init+0x23/0xe0 [ 34.861561][ T343] do_one_initcall+0x8d/0x1e0 [ 34.861757][ T343] do_initcalls+0x1b2/0x3e0 [ 34.861946][ T343] kernel_init_freeable+0x232/0x310 [ 34.862137][ T343] kernel_init+0x20/0x200 [ 34.862414][ T343] ret_from_fork+0x31/0x70 [ 34.862604][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.862796][ T343] IN-SOFTIRQ-W at: [ 34.862912][ T343] __lock_acquire+0x797/0x1570 [ 34.863181][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.863371][ T343] _raw_write_lock+0x30/0x40 [ 34.863566][ T343] addrconf_rs_timer+0xa9/0x730 [ 34.863845][ T343] call_timer_fn+0x13b/0x230 [ 34.864040][ T343] __run_timers+0x545/0x810 [ 34.864232][ T343] timer_expire_remote+0x9b/0xe0 [ 34.864523][ T343] tmigr_handle_remote_cpu+0x270/0x430 [ 34.864720][ T343] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.864913][ T343] tmigr_handle_remote+0x21d/0x3a0 [ 34.865100][ T343] __do_softirq+0x1f8/0x5df [ 34.865289][ T343] irq_exit_rcu+0x97/0xc0 [ 34.865481][ T343] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.865716][ T343] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.865945][ T343] _raw_spin_unlock_irqrestore+0x43/0x70 [ 34.866177][ T343] get_partial_node.part.0+0x1c5/0x3a0 [ 34.866368][ T343] ___slab_alloc+0xb70/0x10a0 [ 34.866638][ T343] __kmalloc+0x34c/0x3c0 [ 34.866832][ T343] p9_fcall_init+0x7d/0x1b0 [ 34.867023][ T343] p9_tag_alloc+0x138/0x700 [ 34.867295][ T343] p9_client_prepare_req+0xe6/0x290 [ 34.867483][ T343] p9_client_rpc+0x18d/0x930 [ 34.867677][ T343] p9_client_clunk+0x74/0xe0 [ 34.867872][ T343] v9fs_dentry_release+0xb9/0x140 [ 34.868142][ T343] __dentry_kill+0x1d9/0x4f0 [ 34.868335][ T343] dput.part.0+0x333/0x6c0 [ 34.868523][ T343] walk_component+0x199/0x4f0 [ 34.868804][ T343] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.869035][ T343] path_openat+0x1be/0x440 [ 34.869221][ T343] do_filp_open+0x1b3/0x3e0 [ 34.869505][ T343] do_sys_openat2+0x122/0x160 [ 34.869703][ T343] __x64_sys_openat+0x123/0x1e0 [ 34.869892][ T343] do_syscall_64+0xc6/0x1e0 [ 34.870081][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.870309][ T343] IN-SOFTIRQ-R at: [ 34.870426][ T343] __lock_acquire+0x797/0x1570 [ 34.870620][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.870814][ T343] _raw_read_lock_bh+0x44/0x80 [ 34.871012][ T343] ipv6_get_lladdr+0xa9/0x3e0 [ 34.871197][ T343] addrconf_rs_timer+0x24a/0x730 [ 34.871383][ T343] call_timer_fn+0x13b/0x230 [ 34.871745][ T343] __run_timers+0x545/0x810 [ 34.871933][ T343] timer_expire_remote+0x9b/0xe0 [ 34.872122][ T343] tmigr_handle_remote_cpu+0x270/0x430 [ 34.872388][ T343] tmigr_handle_remote_up+0x19f/0x2e0 [ 34.872576][ T343] tmigr_handle_remote+0x21d/0x3a0 [ 34.872767][ T343] __do_softirq+0x1f8/0x5df [ 34.872957][ T343] irq_exit_rcu+0x97/0xc0 [ 34.873232][ T343] sysvec_apic_timer_interrupt+0x75/0x80 [ 34.873454][ T343] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 34.873677][ T343] _raw_spin_unlock_irqrestore+0x43/0x70 [ 34.873985][ T343] get_partial_node.part.0+0x1c5/0x3a0 [ 34.874177][ T343] ___slab_alloc+0xb70/0x10a0 [ 34.874369][ T343] __kmalloc+0x34c/0x3c0 [ 34.874641][ T343] p9_fcall_init+0x7d/0x1b0 [ 34.874831][ T343] p9_tag_alloc+0x138/0x700 [ 34.875018][ T343] p9_client_prepare_req+0xe6/0x290 [ 34.875206][ T343] p9_client_rpc+0x18d/0x930 [ 34.875390][ T343] p9_client_clunk+0x74/0xe0 [ 34.875575][ T343] v9fs_dentry_release+0xb9/0x140 [ 34.875779][ T343] __dentry_kill+0x1d9/0x4f0 [ 34.876048][ T343] dput.part.0+0x333/0x6c0 [ 34.876234][ T343] walk_component+0x199/0x4f0 [ 34.876422][ T343] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 34.876730][ T343] path_openat+0x1be/0x440 [ 34.876914][ T343] do_filp_open+0x1b3/0x3e0 [ 34.877106][ T343] do_sys_openat2+0x122/0x160 [ 34.877375][ T343] __x64_sys_openat+0x123/0x1e0 [ 34.877560][ T343] do_syscall_64+0xc6/0x1e0 [ 34.877762][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.878068][ T343] INITIAL USE at: [ 34.878186][ T343] __lock_acquire+0x797/0x1570 [ 34.878376][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.878565][ T343] _raw_write_lock_bh+0x38/0x50 [ 34.878832][ T343] addrconf_permanent_addr+0x6e/0x670 [ 34.879019][ T343] addrconf_notify+0x749/0xd60 [ 34.879204][ T343] notifier_call_chain+0xcd/0x150 [ 34.879393][ T343] __dev_notify_flags+0xe6/0x250 [ 34.879701][ T343] dev_change_flags+0xec/0x160 [ 34.879890][ T343] do_setlink+0x7d6/0x21e0 [ 34.880076][ T343] __rtnl_newlink+0xaa7/0xd80 [ 34.880267][ T343] rtnl_newlink+0x63/0xa0 [ 34.880458][ T343] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 34.880643][ T343] netlink_rcv_skb+0x130/0x360 [ 34.880832][ T343] netlink_unicast+0x449/0x710 [ 34.881016][ T343] netlink_sendmsg+0x723/0xbe0 [ 34.881205][ T343] ____sys_sendmsg+0x7b2/0xa10 [ 34.881401][ T343] ___sys_sendmsg+0xee/0x170 [ 34.881585][ T343] __sys_sendmsg+0xcd/0x170 [ 34.881769][ T343] do_syscall_64+0xc6/0x1e0 [ 34.881952][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.882255][ T343] INITIAL READ USE at: [ 34.882375][ T343] __lock_acquire+0x797/0x1570 [ 34.882566][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.882753][ T343] _raw_read_lock_bh+0x44/0x80 [ 34.883104][ T343] inet6_fill_ifla6_attrs+0x516/0x740 [ 34.883329][ T343] inet6_fill_link_af+0x5e/0xe0 [ 34.883520][ T343] rtnl_fill_ifinfo+0x1612/0x29e0 [ 34.883789][ T343] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 34.884012][ T343] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 34.884238][ T343] rtmsg_ifinfo+0x5b/0xa0 [ 34.884515][ T343] register_netdevice+0x1177/0x1690 [ 34.884739][ T343] register_netdev+0x20/0x40 [ 34.884921][ T343] sit_init_net+0x250/0x4f0 [ 34.885112][ T343] ops_init+0x9b/0x560 [ 34.885297][ T343] register_pernet_operations+0x2db/0x710 [ 34.885522][ T343] register_pernet_device+0x2a/0x60 [ 34.885743][ T343] sit_init+0x23/0xe0 [ 34.885931][ T343] do_one_initcall+0x8d/0x1e0 [ 34.886121][ T343] do_initcalls+0x1b2/0x3e0 [ 34.886311][ T343] kernel_init_freeable+0x232/0x310 [ 34.886625][ T343] kernel_init+0x20/0x200 [ 34.886811][ T343] ret_from_fork+0x31/0x70 [ 34.886998][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.887184][ T343] } [ 34.887262][ T343] ... key at: [] __key.37+0x0/0x40 [ 34.887489][ T343] [ 34.887489][ T343] the dependencies between the lock to be acquired [ 34.887491][ T343] and SOFTIRQ-irq-unsafe lock: [ 34.887928][ T343] -> (&p->alloc_lock){+.+.}-{2:2} { [ 34.888082][ T343] HARDIRQ-ON-W at: [ 34.888199][ T343] __lock_acquire+0x797/0x1570 [ 34.888492][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.888682][ T343] _raw_spin_lock+0x30/0x40 [ 34.888867][ T343] set_mems_allowed+0x1d/0x210 [ 34.889055][ T343] kernel_init_freeable+0x72/0x310 [ 34.889242][ T343] kernel_init+0x20/0x200 [ 34.889426][ T343] ret_from_fork+0x31/0x70 [ 34.889632][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.889836][ T343] SOFTIRQ-ON-W at: [ 34.889947][ T343] __lock_acquire+0x797/0x1570 [ 34.890136][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.890329][ T343] _raw_spin_lock+0x30/0x40 [ 34.890601][ T343] set_mems_allowed+0x1d/0x210 [ 34.890787][ T343] kernel_init_freeable+0x72/0x310 [ 34.890972][ T343] kernel_init+0x20/0x200 [ 34.891159][ T343] ret_from_fork+0x31/0x70 [ 34.891345][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.891537][ T343] INITIAL USE at: [ 34.891649][ T343] __lock_acquire+0x797/0x1570 [ 34.891931][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.892117][ T343] _raw_spin_lock+0x30/0x40 [ 34.892301][ T343] set_mems_allowed+0x1d/0x210 [ 34.892489][ T343] kernel_init_freeable+0x72/0x310 [ 34.892756][ T343] kernel_init+0x20/0x200 [ 34.892948][ T343] ret_from_fork+0x31/0x70 [ 34.893132][ T343] ret_from_fork_asm+0x1a/0x30 [ 34.893402][ T343] } [ 34.893479][ T343] ... key at: [] __key.387+0x0/0x40 [ 34.893705][ T343] ... acquired at: [ 34.893816][ T343] check_prev_add+0x194/0xce0 [ 34.894130][ T343] validate_chain+0x71d/0x9b0 [ 34.894284][ T343] __lock_acquire+0xaf0/0x1570 [ 34.894436][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.894584][ T343] _raw_spin_lock+0x30/0x40 [ 34.894735][ T343] __get_task_comm+0x27/0x70 [ 34.894963][ T343] ref_tracker_alloc+0x2ee/0x490 [ 34.895114][ T343] netdev_get_by_index+0x5e/0x80 [ 34.895261][ T343] fib6_nh_init+0x3d8/0x15b0 [ 34.895429][ T343] ip6_route_info_create+0xf18/0x17d0 [ 34.895659][ T343] addrconf_f6i_alloc+0x265/0x560 [ 34.895814][ T343] __ipv6_dev_ac_inc+0x25f/0xb10 [ 34.895965][ T343] addrconf_join_anycast+0x1c0/0x220 [ 34.896120][ T343] dev_forward_change+0x2a6/0x7b0 [ 34.896351][ T343] addrconf_fixup_forwarding+0x23f/0x460 [ 34.896536][ T343] addrconf_sysctl_forward+0x212/0x2b0 [ 34.896686][ T343] proc_sys_call_handler+0x403/0x5e0 [ 34.896837][ T343] vfs_write+0x9e5/0x10a0 [ 34.897069][ T343] ksys_write+0xf5/0x1e0 [ 34.897216][ T343] do_syscall_64+0xc6/0x1e0 [ 34.897366][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.897553][ T343] [ 34.897629][ T343] [ 34.897629][ T343] stack backtrace: [ 34.897894][ T343] CPU: 1 PID: 343 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 34.898121][ T343] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 34.898550][ T343] Call Trace: [ 34.898662][ T343] [ 34.898740][ T343] dump_stack_lvl+0x82/0xd0 [ 34.898895][ T343] print_bad_irq_dependency+0x957/0xd40 [ 34.899048][ T343] ? hlock_class+0x4e/0x130 [ 34.899198][ T343] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 34.899382][ T343] ? __pfx_usage_skip+0x10/0x10 [ 34.899528][ T343] ? __bfs+0x246/0x650 [ 34.899650][ T343] ? __pfx_usage_match+0x10/0x10 [ 34.899805][ T343] check_irq_usage+0x596/0x850 [ 34.899960][ T343] ? __pfx_check_irq_usage+0x10/0x10 [ 34.900108][ T343] ? __bfs+0x246/0x650 [ 34.900220][ T343] ? __pfx_hlock_conflict+0x10/0x10 [ 34.900372][ T343] ? check_path.constprop.0+0x24/0x50 [ 34.900613][ T343] ? check_noncircular+0x14c/0x3e0 [ 34.900762][ T343] ? __pfx_check_noncircular+0x10/0x10 [ 34.900916][ T343] ? check_prev_add+0x194/0xce0 [ 34.901065][ T343] check_prev_add+0x194/0xce0 [ 34.901214][ T343] ? validate_chain+0x130/0x9b0 [ 34.901364][ T343] validate_chain+0x71d/0x9b0 [ 34.901513][ T343] ? mark_lock+0x38/0x3e0 [ 34.901626][ T343] ? __pfx_validate_chain+0x10/0x10 [ 34.901776][ T343] ? hlock_class+0x4e/0x130 [ 34.901932][ T343] ? mark_lock+0x38/0x3e0 [ 34.902047][ T343] __lock_acquire+0xaf0/0x1570 [ 34.902204][ T343] lock_acquire.part.0+0xeb/0x330 [ 34.902352][ T343] ? __get_task_comm+0x27/0x70 [ 34.902612][ T343] ? mark_lock+0x38/0x3e0 [ 34.902724][ T343] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 34.902877][ T343] ? trace_lock_acquire+0x135/0x1c0 [ 34.903034][ T343] ? __get_task_comm+0x27/0x70 [ 34.903179][ T343] ? lock_acquire+0x32/0xc0 [ 34.903325][ T343] ? __get_task_comm+0x27/0x70 [ 34.903471][ T343] _raw_spin_lock+0x30/0x40 [ 34.903623][ T343] ? __get_task_comm+0x27/0x70 [ 34.903770][ T343] __get_task_comm+0x27/0x70 [ 34.903924][ T343] ref_tracker_alloc+0x2ee/0x490 [ 34.904074][ T343] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 34.904221][ T343] ? dev_get_by_index+0x177/0x270 [ 34.904367][ T343] ? netdev_get_by_index+0x5e/0x80 [ 34.904516][ T343] ? fib6_nh_init+0x3d8/0x15b0 [ 34.904664][ T343] ? ip6_route_info_create+0xf18/0x17d0 [ 34.904818][ T343] ? addrconf_f6i_alloc+0x265/0x560 [ 34.904966][ T343] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 34.905275][ T343] ? addrconf_join_anycast+0x1c0/0x220 [ 34.905422][ T343] ? dev_forward_change+0x2a6/0x7b0 [ 34.905569][ T343] ? addrconf_fixup_forwarding+0x23f/0x460 [ 34.905751][ T343] ? addrconf_sysctl_forward+0x212/0x2b0 [ 34.905984][ T343] ? proc_sys_call_handler+0x403/0x5e0 [ 34.906142][ T343] ? vfs_write+0x9e5/0x10a0 [ 34.906290][ T343] ? ksys_write+0xf5/0x1e0 [ 34.906437][ T343] ? do_syscall_64+0xc6/0x1e0 [ 34.906663][ T343] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.906848][ T343] ? dev_get_by_index+0x177/0x270 [ 34.906998][ T343] netdev_get_by_index+0x5e/0x80 [ 34.907145][ T343] fib6_nh_init+0x3d8/0x15b0 [ 34.907371][ T343] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 34.907555][ T343] ? __pfx_fib6_nh_init+0x10/0x10 [ 34.907707][ T343] ? kasan_save_track+0x14/0x30 [ 34.907856][ T343] ? __kasan_kmalloc+0x7f/0x90 [ 34.908086][ T343] ? __kmalloc+0x1d7/0x3c0 [ 34.908234][ T343] ? fib6_get_table+0x116/0x290 [ 34.908382][ T343] ip6_route_info_create+0xf18/0x17d0 [ 34.908530][ T343] ? __lock_release+0x103/0x460 [ 34.908679][ T343] ? __pfx_ip6_route_info_create+0x10/0x10 [ 34.908942][ T343] ? addrconf_f6i_alloc+0x12d/0x560 [ 34.909096][ T343] addrconf_f6i_alloc+0x265/0x560 [ 34.909254][ T343] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 34.909407][ T343] ? do_raw_write_lock+0x122/0x3b0 [ 34.909645][ T343] ? __pfx_do_raw_write_lock+0x10/0x10 [ 34.909797][ T343] ? lock_acquire+0x32/0xc0 [ 34.909945][ T343] __ipv6_dev_ac_inc+0x25f/0xb10 [ 34.910095][ T343] addrconf_join_anycast+0x1c0/0x220 [ 34.910328][ T343] ? mark_lock+0x38/0x3e0 [ 34.910448][ T343] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 34.910633][ T343] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 34.910821][ T343] dev_forward_change+0x2a6/0x7b0 [ 34.911053][ T343] ? __pfx_dev_forward_change+0x10/0x10 [ 34.911203][ T343] addrconf_fixup_forwarding+0x23f/0x460 [ 34.911354][ T343] addrconf_sysctl_forward+0x212/0x2b0 [ 34.911502][ T343] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 34.911772][ T343] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 34.911958][ T343] ? trace_kmalloc+0x2a/0xe0 [ 34.912104][ T343] ? __kmalloc_node+0x220/0x400 [ 34.912262][ T343] ? proc_sys_call_handler+0x30b/0x5e0 [ 34.912500][ T343] proc_sys_call_handler+0x403/0x5e0 [ 34.912649][ T343] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 34.912832][ T343] ? __lock_acquire+0xaf0/0x1570 [ 34.912982][ T343] vfs_write+0x9e5/0x10a0 [ 34.913102][ T343] ? do_user_addr_fault+0x449/0xbe0 [ 34.913250][ T343] ? __pfx_vfs_write+0x10/0x10 [ 34.913401][ T343] ? find_held_lock+0x2c/0x110 [ 34.913549][ T343] ? __pfx___lock_release+0x10/0x10 [ 34.913698][ T343] ? __fget_light+0x53/0x1e0 [ 34.913848][ T343] ksys_write+0xf5/0x1e0 [ 34.913960][ T343] ? __pfx_ksys_write+0x10/0x10 [ 34.914109][ T343] ? do_user_addr_fault+0x4bd/0xbe0 [ 34.914262][ T343] do_syscall_64+0xc6/0x1e0 [ 34.914494][ T343] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 34.914680][ T343] RIP: 0033:0x7fd28bf52957 [ 34.914836][ T343] 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 [ 34.915368][ T343] RSP: 002b:00007ffec4a89f98 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 34.915600][ T343] RAX: ffffffffffffffda RBX: 0000558534ebf360 RCX: 00007fd28bf52957 [ 34.915824][ T343] RDX: 0000000000000002 RSI: 0000558534ebf3a0 RDI: 0000000000000005 [ 34.916042][ T343] RBP: 0000558534ec14d0 R08: 0000000000000003 R09: 0000000000000077 [ 34.916266][ T343] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 34.916679][ T343] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fd28c0099c0 [ 34.916908][ T343] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr