[ 31.306273][ T314] gre: GRE over IPv4 demultiplexor driver [ 31.325035][ T314] ip_gre: GRE over IPv4 tunneling driver [ 33.365271][ T337] 8021q: 802.1Q VLAN Support v1.8 [ 33.875563][ T342] ip (342) used greatest stack depth: 23488 bytes left [ 37.281303][ T375] GACT probability NOT on [ 37.299845][ T373] tc (373) used greatest stack depth: 23480 bytes left [ 41.306892][ T412] [ 41.307063][ T412] ===================================================== [ 41.307238][ T412] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 41.307446][ T412] 6.9.0-rc1-virtme #1 Not tainted [ 41.307581][ T412] ----------------------------------------------------- [ 41.307747][ T412] sysctl/412 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 41.307948][ T412] ffff88800575cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 41.308192][ T412] [ 41.308192][ T412] and this task is already holding: [ 41.308391][ T412] ffff8880054f6d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.308636][ T412] which would create a new lock dependency: [ 41.308808][ T412] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 41.309016][ T412] [ 41.309016][ T412] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 41.309243][ T412] (&ndev->lock){++--}-{2:2} [ 41.309246][ T412] [ 41.309246][ T412] ... which became SOFTIRQ-irq-safe at: [ 41.309581][ T412] __lock_acquire+0x797/0x1570 [ 41.309721][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.309858][ T412] _raw_write_lock+0x30/0x40 [ 41.309996][ T412] addrconf_rs_timer+0xa9/0x730 [ 41.310134][ T412] call_timer_fn+0x13b/0x230 [ 41.310271][ T412] __run_timers+0x545/0x810 [ 41.310407][ T412] timer_expire_remote+0x9b/0xe0 [ 41.310541][ T412] tmigr_handle_remote_cpu+0x270/0x430 [ 41.310678][ T412] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.310811][ T412] tmigr_handle_remote+0x21d/0x3a0 [ 41.310947][ T412] __do_softirq+0x1f8/0x5df [ 41.311081][ T412] irq_exit_rcu+0x97/0xc0 [ 41.311217][ T412] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.311354][ T412] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.311522][ T412] unwind_next_frame+0x1520/0x1d00 [ 41.311658][ T412] arch_stack_walk+0x8c/0xf0 [ 41.311791][ T412] stack_trace_save+0x94/0xd0 [ 41.311927][ T412] set_track_prepare+0x31/0x70 [ 41.312064][ T412] ___slab_alloc+0xe8b/0x10a0 [ 41.312199][ T412] kmem_cache_alloc+0x243/0x270 [ 41.312334][ T412] vm_area_dup+0x4d/0x150 [ 41.312470][ T412] __split_vma+0x131/0xd10 [ 41.312606][ T412] vma_modify+0x245/0x300 [ 41.312741][ T412] mprotect_fixup+0x195/0xab0 [ 41.312876][ T412] do_mprotect_pkey+0x610/0xa30 [ 41.313012][ T412] __x64_sys_mprotect+0x78/0xc0 [ 41.313147][ T412] do_syscall_64+0xc6/0x1e0 [ 41.313295][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.313467][ T412] [ 41.313467][ T412] to a SOFTIRQ-irq-unsafe lock: [ 41.313634][ T412] (&p->alloc_lock){+.+.}-{2:2} [ 41.313638][ T412] [ 41.313638][ T412] ... which became SOFTIRQ-irq-unsafe at: [ 41.313966][ T412] ... [ 41.313967][ T412] __lock_acquire+0x797/0x1570 [ 41.314171][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.314305][ T412] _raw_spin_lock+0x30/0x40 [ 41.314441][ T412] set_mems_allowed+0x1d/0x210 [ 41.314577][ T412] kernel_init_freeable+0x72/0x310 [ 41.314714][ T412] kernel_init+0x20/0x200 [ 41.314850][ T412] ret_from_fork+0x31/0x70 [ 41.314987][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.315121][ T412] [ 41.315121][ T412] other info that might help us debug this: [ 41.315121][ T412] [ 41.315384][ T412] Possible interrupt unsafe locking scenario: [ 41.315384][ T412] [ 41.315586][ T412] CPU0 CPU1 [ 41.315720][ T412] ---- ---- [ 41.315855][ T412] lock(&p->alloc_lock); [ 41.315958][ T412] local_irq_disable(); [ 41.316125][ T412] lock(&ndev->lock); [ 41.316291][ T412] lock(&p->alloc_lock); [ 41.316465][ T412] [ 41.316566][ T412] lock(&ndev->lock); [ 41.316670][ T412] [ 41.316670][ T412] *** DEADLOCK *** [ 41.316670][ T412] [ 41.316866][ T412] 3 locks held by sysctl/412: [ 41.317004][ T412] #0: ffff888005e613f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 41.317255][ T412] #1: ffffffffab9969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 41.317530][ T412] #2: ffff8880054f6d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.317777][ T412] [ 41.317777][ T412] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 41.318036][ T412] -> (&ndev->lock){++--}-{2:2} { [ 41.318181][ T412] HARDIRQ-ON-W at: [ 41.318449][ T412] __lock_acquire+0x797/0x1570 [ 41.318625][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.318799][ T412] _raw_write_lock_bh+0x38/0x50 [ 41.319051][ T412] addrconf_permanent_addr+0x6e/0x670 [ 41.319220][ T412] addrconf_notify+0x749/0xd60 [ 41.319391][ T412] notifier_call_chain+0xcd/0x150 [ 41.319562][ T412] __dev_notify_flags+0xe6/0x250 [ 41.319815][ T412] dev_change_flags+0xec/0x160 [ 41.319992][ T412] do_setlink+0x7d6/0x21e0 [ 41.320165][ T412] __rtnl_newlink+0xaa7/0xd80 [ 41.320418][ T412] rtnl_newlink+0x63/0xa0 [ 41.320588][ T412] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.320757][ T412] netlink_rcv_skb+0x130/0x360 [ 41.320929][ T412] netlink_unicast+0x449/0x710 [ 41.321179][ T412] netlink_sendmsg+0x723/0xbe0 [ 41.321350][ T412] ____sys_sendmsg+0x7b2/0xa10 [ 41.321521][ T412] ___sys_sendmsg+0xee/0x170 [ 41.321772][ T412] __sys_sendmsg+0xcd/0x170 [ 41.321943][ T412] do_syscall_64+0xc6/0x1e0 [ 41.322116][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.322401][ T412] HARDIRQ-ON-R at: [ 41.322505][ T412] __lock_acquire+0x797/0x1570 [ 41.322681][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.322851][ T412] _raw_read_lock_bh+0x44/0x80 [ 41.323107][ T412] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.323287][ T412] inet6_fill_link_af+0x5e/0xe0 [ 41.323462][ T412] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.323713][ T412] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.323888][ T412] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.324091][ T412] rtmsg_ifinfo+0x5b/0xa0 [ 41.324261][ T412] register_netdevice+0x1177/0x1690 [ 41.324511][ T412] register_netdev+0x20/0x40 [ 41.324682][ T412] sit_init_net+0x250/0x4f0 [ 41.324852][ T412] ops_init+0x9b/0x560 [ 41.325074][ T412] register_pernet_operations+0x2db/0x710 [ 41.325278][ T412] register_pernet_device+0x2a/0x60 [ 41.325450][ T412] sit_init+0x23/0xe0 [ 41.325589][ T412] do_one_initcall+0x8d/0x1e0 [ 41.325841][ T412] do_initcalls+0x1b2/0x3e0 [ 41.326013][ T412] kernel_init_freeable+0x232/0x310 [ 41.326183][ T412] kernel_init+0x20/0x200 [ 41.326439][ T412] ret_from_fork+0x31/0x70 [ 41.326611][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.326781][ T412] IN-SOFTIRQ-W at: [ 41.326884][ T412] __lock_acquire+0x797/0x1570 [ 41.327136][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.327308][ T412] _raw_write_lock+0x30/0x40 [ 41.327479][ T412] addrconf_rs_timer+0xa9/0x730 [ 41.327735][ T412] call_timer_fn+0x13b/0x230 [ 41.327905][ T412] __run_timers+0x545/0x810 [ 41.328077][ T412] timer_expire_remote+0x9b/0xe0 [ 41.328255][ T412] tmigr_handle_remote_cpu+0x270/0x430 [ 41.328510][ T412] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.328680][ T412] tmigr_handle_remote+0x21d/0x3a0 [ 41.328852][ T412] __do_softirq+0x1f8/0x5df [ 41.329185][ T412] irq_exit_rcu+0x97/0xc0 [ 41.329357][ T412] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.329567][ T412] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.329854][ T412] unwind_next_frame+0x1520/0x1d00 [ 41.330025][ T412] arch_stack_walk+0x8c/0xf0 [ 41.330199][ T412] stack_trace_save+0x94/0xd0 [ 41.330455][ T412] set_track_prepare+0x31/0x70 [ 41.330629][ T412] ___slab_alloc+0xe8b/0x10a0 [ 41.330800][ T412] kmem_cache_alloc+0x243/0x270 [ 41.330971][ T412] vm_area_dup+0x4d/0x150 [ 41.331143][ T412] __split_vma+0x131/0xd10 [ 41.331319][ T412] vma_modify+0x245/0x300 [ 41.331492][ T412] mprotect_fixup+0x195/0xab0 [ 41.331746][ T412] do_mprotect_pkey+0x610/0xa30 [ 41.331917][ T412] __x64_sys_mprotect+0x78/0xc0 [ 41.332088][ T412] do_syscall_64+0xc6/0x1e0 [ 41.332258][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.332542][ T412] IN-SOFTIRQ-R at: [ 41.332650][ T412] __lock_acquire+0x797/0x1570 [ 41.332823][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.333074][ T412] _raw_read_lock_bh+0x44/0x80 [ 41.333247][ T412] ipv6_get_lladdr+0xa9/0x3e0 [ 41.333428][ T412] addrconf_rs_timer+0x24a/0x730 [ 41.333598][ T412] call_timer_fn+0x13b/0x230 [ 41.333852][ T412] __run_timers+0x545/0x810 [ 41.334024][ T412] timer_expire_remote+0x9b/0xe0 [ 41.334196][ T412] tmigr_handle_remote_cpu+0x270/0x430 [ 41.334450][ T412] tmigr_handle_remote_up+0x19f/0x2e0 [ 41.334620][ T412] tmigr_handle_remote+0x21d/0x3a0 [ 41.334789][ T412] __do_softirq+0x1f8/0x5df [ 41.335045][ T412] irq_exit_rcu+0x97/0xc0 [ 41.335220][ T412] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.335427][ T412] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.335714][ T412] unwind_next_frame+0x1520/0x1d00 [ 41.335887][ T412] arch_stack_walk+0x8c/0xf0 [ 41.336059][ T412] stack_trace_save+0x94/0xd0 [ 41.336232][ T412] set_track_prepare+0x31/0x70 [ 41.336490][ T412] ___slab_alloc+0xe8b/0x10a0 [ 41.336663][ T412] kmem_cache_alloc+0x243/0x270 [ 41.336834][ T412] vm_area_dup+0x4d/0x150 [ 41.337085][ T412] __split_vma+0x131/0xd10 [ 41.337256][ T412] vma_modify+0x245/0x300 [ 41.337425][ T412] mprotect_fixup+0x195/0xab0 [ 41.337599][ T412] do_mprotect_pkey+0x610/0xa30 [ 41.337849][ T412] __x64_sys_mprotect+0x78/0xc0 [ 41.338017][ T412] do_syscall_64+0xc6/0x1e0 [ 41.338185][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.338470][ T412] INITIAL USE at: [ 41.338572][ T412] __lock_acquire+0x797/0x1570 [ 41.338741][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.338915][ T412] _raw_write_lock_bh+0x38/0x50 [ 41.339166][ T412] addrconf_permanent_addr+0x6e/0x670 [ 41.339336][ T412] addrconf_notify+0x749/0xd60 [ 41.339506][ T412] notifier_call_chain+0xcd/0x150 [ 41.339839][ T412] __dev_notify_flags+0xe6/0x250 [ 41.340009][ T412] dev_change_flags+0xec/0x160 [ 41.340181][ T412] do_setlink+0x7d6/0x21e0 [ 41.340435][ T412] __rtnl_newlink+0xaa7/0xd80 [ 41.340610][ T412] rtnl_newlink+0x63/0xa0 [ 41.340781][ T412] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.340953][ T412] netlink_rcv_skb+0x130/0x360 [ 41.341125][ T412] netlink_unicast+0x449/0x710 [ 41.341294][ T412] netlink_sendmsg+0x723/0xbe0 [ 41.341469][ T412] ____sys_sendmsg+0x7b2/0xa10 [ 41.341721][ T412] ___sys_sendmsg+0xee/0x170 [ 41.341893][ T412] __sys_sendmsg+0xcd/0x170 [ 41.342065][ T412] do_syscall_64+0xc6/0x1e0 [ 41.342235][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.342520][ T412] INITIAL READ USE at: [ 41.342622][ T412] __lock_acquire+0x797/0x1570 [ 41.342798][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.343049][ T412] _raw_read_lock_bh+0x44/0x80 [ 41.343220][ T412] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.343447][ T412] inet6_fill_link_af+0x5e/0xe0 [ 41.343697][ T412] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.343873][ T412] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.344076][ T412] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.344362][ T412] rtmsg_ifinfo+0x5b/0xa0 [ 41.344535][ T412] register_netdevice+0x1177/0x1690 [ 41.344740][ T412] register_netdev+0x20/0x40 [ 41.344910][ T412] sit_init_net+0x250/0x4f0 [ 41.345166][ T412] ops_init+0x9b/0x560 [ 41.345335][ T412] register_pernet_operations+0x2db/0x710 [ 41.345537][ T412] register_pernet_device+0x2a/0x60 [ 41.345819][ T412] sit_init+0x23/0xe0 [ 41.345990][ T412] do_one_initcall+0x8d/0x1e0 [ 41.346162][ T412] do_initcalls+0x1b2/0x3e0 [ 41.346419][ T412] kernel_init_freeable+0x232/0x310 [ 41.346624][ T412] kernel_init+0x20/0x200 [ 41.346794][ T412] ret_from_fork+0x31/0x70 [ 41.347048][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.347217][ T412] } [ 41.347288][ T412] ... key at: [] __key.37+0x0/0x40 [ 41.347496][ T412] [ 41.347496][ T412] the dependencies between the lock to be acquired [ 41.347498][ T412] and SOFTIRQ-irq-unsafe lock: [ 41.347947][ T412] -> (&p->alloc_lock){+.+.}-{2:2} { [ 41.348088][ T412] HARDIRQ-ON-W at: [ 41.348193][ T412] __lock_acquire+0x797/0x1570 [ 41.348447][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.348618][ T412] _raw_spin_lock+0x30/0x40 [ 41.348793][ T412] set_mems_allowed+0x1d/0x210 [ 41.349047][ T412] kernel_init_freeable+0x72/0x310 [ 41.349218][ T412] kernel_init+0x20/0x200 [ 41.349392][ T412] ret_from_fork+0x31/0x70 [ 41.349565][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.349818][ T412] SOFTIRQ-ON-W at: [ 41.349920][ T412] __lock_acquire+0x797/0x1570 [ 41.350094][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.350432][ T412] _raw_spin_lock+0x30/0x40 [ 41.350604][ T412] set_mems_allowed+0x1d/0x210 [ 41.350776][ T412] kernel_init_freeable+0x72/0x310 [ 41.350948][ T412] kernel_init+0x20/0x200 [ 41.351119][ T412] ret_from_fork+0x31/0x70 [ 41.351290][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.351464][ T412] INITIAL USE at: [ 41.351567][ T412] __lock_acquire+0x797/0x1570 [ 41.351820][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.351992][ T412] _raw_spin_lock+0x30/0x40 [ 41.352164][ T412] set_mems_allowed+0x1d/0x210 [ 41.352417][ T412] kernel_init_freeable+0x72/0x310 [ 41.352589][ T412] kernel_init+0x20/0x200 [ 41.352762][ T412] ret_from_fork+0x31/0x70 [ 41.353016][ T412] ret_from_fork_asm+0x1a/0x30 [ 41.353191][ T412] } [ 41.353262][ T412] ... key at: [] __key.387+0x0/0x40 [ 41.353477][ T412] ... acquired at: [ 41.353579][ T412] check_prev_add+0x194/0xce0 [ 41.353795][ T412] validate_chain+0x71d/0x9b0 [ 41.353930][ T412] __lock_acquire+0xaf0/0x1570 [ 41.354075][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.354211][ T412] _raw_spin_lock+0x30/0x40 [ 41.354426][ T412] __get_task_comm+0x27/0x70 [ 41.354562][ T412] ref_tracker_alloc+0x2ee/0x490 [ 41.354698][ T412] netdev_get_by_index+0x5e/0x80 [ 41.354834][ T412] fib6_nh_init+0x3d8/0x15b0 [ 41.355053][ T412] ip6_route_info_create+0xf18/0x17d0 [ 41.355189][ T412] addrconf_f6i_alloc+0x265/0x560 [ 41.355329][ T412] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.355466][ T412] addrconf_join_anycast+0x1c0/0x220 [ 41.355681][ T412] dev_forward_change+0x2a6/0x7b0 [ 41.355819][ T412] addrconf_fixup_forwarding+0x23f/0x460 [ 41.355989][ T412] addrconf_sysctl_forward+0x212/0x2b0 [ 41.356127][ T412] proc_sys_call_handler+0x403/0x5e0 [ 41.356345][ T412] vfs_write+0x9e5/0x10a0 [ 41.356486][ T412] ksys_write+0xf5/0x1e0 [ 41.356623][ T412] do_syscall_64+0xc6/0x1e0 [ 41.356758][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.357008][ T412] [ 41.357078][ T412] [ 41.357078][ T412] stack backtrace: [ 41.357243][ T412] CPU: 0 PID: 412 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 41.357453][ T412] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.357838][ T412] Call Trace: [ 41.357942][ T412] [ 41.358012][ T412] dump_stack_lvl+0x82/0xd0 [ 41.358153][ T412] print_bad_irq_dependency+0x957/0xd40 [ 41.358369][ T412] ? hlock_class+0x4e/0x130 [ 41.358507][ T412] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 41.358676][ T412] ? __pfx_usage_skip+0x10/0x10 [ 41.358812][ T412] ? __bfs+0x246/0x650 [ 41.358999][ T412] ? __pfx_usage_match+0x10/0x10 [ 41.359136][ T412] check_irq_usage+0x596/0x850 [ 41.359274][ T412] ? __pfx_check_irq_usage+0x10/0x10 [ 41.359411][ T412] ? __bfs+0x246/0x650 [ 41.359514][ T412] ? __pfx_hlock_conflict+0x10/0x10 [ 41.359731][ T412] ? check_path.constprop.0+0x24/0x50 [ 41.359867][ T412] ? check_noncircular+0x14c/0x3e0 [ 41.360004][ T412] ? __pfx_check_noncircular+0x10/0x10 [ 41.360147][ T412] ? check_prev_add+0x194/0xce0 [ 41.360362][ T412] check_prev_add+0x194/0xce0 [ 41.360498][ T412] ? validate_chain+0x130/0x9b0 [ 41.360634][ T412] validate_chain+0x71d/0x9b0 [ 41.360772][ T412] ? mark_lock+0x38/0x3e0 [ 41.360874][ T412] ? __pfx_validate_chain+0x10/0x10 [ 41.361166][ T412] ? hlock_class+0x4e/0x130 [ 41.361299][ T412] ? mark_lock+0x38/0x3e0 [ 41.361403][ T412] __lock_acquire+0xaf0/0x1570 [ 41.361547][ T412] lock_acquire.part.0+0xeb/0x330 [ 41.361763][ T412] ? __get_task_comm+0x27/0x70 [ 41.361898][ T412] ? mark_lock+0x38/0x3e0 [ 41.362002][ T412] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.362138][ T412] ? trace_lock_acquire+0x135/0x1c0 [ 41.362274][ T412] ? __get_task_comm+0x27/0x70 [ 41.362487][ T412] ? lock_acquire+0x32/0xc0 [ 41.362622][ T412] ? __get_task_comm+0x27/0x70 [ 41.362756][ T412] _raw_spin_lock+0x30/0x40 [ 41.362893][ T412] ? __get_task_comm+0x27/0x70 [ 41.363109][ T412] __get_task_comm+0x27/0x70 [ 41.363244][ T412] ref_tracker_alloc+0x2ee/0x490 [ 41.363390][ T412] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 41.363527][ T412] ? dev_get_by_index+0x177/0x270 [ 41.363741][ T412] ? netdev_get_by_index+0x5e/0x80 [ 41.363878][ T412] ? fib6_nh_init+0x3d8/0x15b0 [ 41.364012][ T412] ? ip6_route_info_create+0xf18/0x17d0 [ 41.364151][ T412] ? addrconf_f6i_alloc+0x265/0x560 [ 41.364364][ T412] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.364500][ T412] ? addrconf_join_anycast+0x1c0/0x220 [ 41.364636][ T412] ? dev_forward_change+0x2a6/0x7b0 [ 41.364771][ T412] ? addrconf_fixup_forwarding+0x23f/0x460 [ 41.365017][ T412] ? addrconf_sysctl_forward+0x212/0x2b0 [ 41.365153][ T412] ? proc_sys_call_handler+0x403/0x5e0 [ 41.365292][ T412] ? vfs_write+0x9e5/0x10a0 [ 41.365428][ T412] ? ksys_write+0xf5/0x1e0 [ 41.365562][ T412] ? do_syscall_64+0xc6/0x1e0 [ 41.365782][ T412] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.365952][ T412] ? dev_get_by_index+0x177/0x270 [ 41.366089][ T412] netdev_get_by_index+0x5e/0x80 [ 41.366226][ T412] fib6_nh_init+0x3d8/0x15b0 [ 41.366440][ T412] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 41.366616][ T412] ? __pfx_fib6_nh_init+0x10/0x10 [ 41.366752][ T412] ? kasan_save_track+0x14/0x30 [ 41.366891][ T412] ? __kasan_kmalloc+0x7f/0x90 [ 41.367108][ T412] ? __kmalloc+0x1d7/0x3c0 [ 41.367243][ T412] ? fib6_get_table+0x116/0x290 [ 41.367379][ T412] ip6_route_info_create+0xf18/0x17d0 [ 41.367515][ T412] ? __lock_release+0x103/0x460 [ 41.367734][ T412] ? __pfx_ip6_route_info_create+0x10/0x10 [ 41.367903][ T412] ? addrconf_f6i_alloc+0x12d/0x560 [ 41.368044][ T412] addrconf_f6i_alloc+0x265/0x560 [ 41.368181][ T412] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 41.368400][ T412] ? do_raw_write_lock+0x122/0x3b0 [ 41.368536][ T412] ? __pfx_do_raw_write_lock+0x10/0x10 [ 41.368671][ T412] ? lock_acquire+0x32/0xc0 [ 41.368807][ T412] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.369024][ T412] addrconf_join_anycast+0x1c0/0x220 [ 41.369159][ T412] ? mark_lock+0x38/0x3e0 [ 41.369265][ T412] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 41.369434][ T412] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 41.369683][ T412] dev_forward_change+0x2a6/0x7b0 [ 41.369821][ T412] ? __pfx_dev_forward_change+0x10/0x10 [ 41.369959][ T412] addrconf_fixup_forwarding+0x23f/0x460 [ 41.370097][ T412] addrconf_sysctl_forward+0x212/0x2b0 [ 41.370313][ T412] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.370483][ T412] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.370652][ T412] ? trace_kmalloc+0x2a/0xe0 [ 41.370787][ T412] ? __kmalloc_node+0x220/0x400 [ 41.371002][ T412] ? proc_sys_call_handler+0x30b/0x5e0 [ 41.371138][ T412] proc_sys_call_handler+0x403/0x5e0 [ 41.371275][ T412] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 41.371445][ T412] ? __lock_acquire+0xaf0/0x1570 [ 41.371742][ T412] vfs_write+0x9e5/0x10a0 [ 41.371850][ T412] ? do_user_addr_fault+0x449/0xbe0 [ 41.371985][ T412] ? __pfx_vfs_write+0x10/0x10 [ 41.372120][ T412] ? find_held_lock+0x2c/0x110 [ 41.372256][ T412] ? __pfx___lock_release+0x10/0x10 [ 41.372470][ T412] ? __fget_light+0x53/0x1e0 [ 41.372606][ T412] ksys_write+0xf5/0x1e0 [ 41.372708][ T412] ? __pfx_ksys_write+0x10/0x10 [ 41.372850][ T412] ? do_user_addr_fault+0x4bd/0xbe0 [ 41.373065][ T412] do_syscall_64+0xc6/0x1e0 [ 41.373199][ T412] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.373393][ T412] RIP: 0033:0x7f8966f05957 [ 41.373535][ T412] 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 [ 41.374098][ T412] RSP: 002b:00007ffc8c1d1a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 41.374385][ T412] RAX: ffffffffffffffda RBX: 000056031de30360 RCX: 00007f8966f05957 [ 41.374587][ T412] RDX: 0000000000000002 RSI: 000056031de303a0 RDI: 0000000000000005 [ 41.374790][ T412] RBP: 000056031de324d0 R08: 0000000000000003 R09: 0000000000000077 [ 41.375073][ T412] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 41.375274][ T412] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f8966fbc9c0 [ 41.375483][ T412] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr