[ 46.051476][ T438] gre: GRE over IPv4 demultiplexor driver [ 46.109559][ T438] ip6_gre: GRE over IPv6 tunneling driver [ 48.378736][ T460] 8021q: 802.1Q VLAN Support v1.8 [ 52.623993][ T498] GACT probability NOT on [ 56.637060][ T535] [ 56.637176][ T535] ===================================================== [ 56.637353][ T535] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 56.637556][ T535] 6.9.0-rc1-virtme #1 Not tainted [ 56.637697][ T535] ----------------------------------------------------- [ 56.637873][ T535] sysctl/535 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 56.638079][ T535] ffff888006100968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 56.638338][ T535] [ 56.638338][ T535] and this task is already holding: [ 56.638540][ T535] ffff888007025580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 56.638788][ T535] which would create a new lock dependency: [ 56.638961][ T535] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 56.639188][ T535] [ 56.639188][ T535] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 56.639432][ T535] (&ndev->lock){++--}-{2:2} [ 56.639436][ T535] [ 56.639436][ T535] ... which became SOFTIRQ-irq-safe at: [ 56.639779][ T535] __lock_acquire+0x797/0x1570 [ 56.639925][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.640083][ T535] _raw_write_lock+0x30/0x40 [ 56.640292][ T535] addrconf_rs_timer+0xa9/0x730 [ 56.640493][ T535] call_timer_fn+0x13b/0x230 [ 56.640715][ T535] __run_timers+0x545/0x810 [ 56.640927][ T535] timer_expire_remote+0x9b/0xe0 [ 56.641139][ T535] tmigr_handle_remote_cpu+0x270/0x430 [ 56.641364][ T535] tmigr_handle_remote_up+0x19f/0x2e0 [ 56.641583][ T535] tmigr_handle_remote+0x21d/0x3a0 [ 56.641805][ T535] __do_softirq+0x1f8/0x5df [ 56.642028][ T535] irq_exit_rcu+0x97/0xc0 [ 56.642253][ T535] sysvec_apic_timer_interrupt+0x75/0x80 [ 56.642473][ T535] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 56.642750][ T535] default_idle+0xf/0x20 [ 56.642923][ T535] default_idle_call+0x6d/0xb0 [ 56.643148][ T535] cpuidle_idle_call+0x1f4/0x280 [ 56.643373][ T535] do_idle+0xf9/0x160 [ 56.643542][ T535] cpu_startup_entry+0x54/0x60 [ 56.643764][ T535] start_secondary+0x21c/0x2b0 [ 56.643989][ T535] common_startup_64+0x12c/0x138 [ 56.644213][ T535] [ 56.644213][ T535] to a SOFTIRQ-irq-unsafe lock: [ 56.644494][ T535] (&p->alloc_lock){+.+.}-{2:2} [ 56.644502][ T535] [ 56.644502][ T535] ... which became SOFTIRQ-irq-unsafe at: [ 56.645058][ T535] ... [ 56.645060][ T535] __lock_acquire+0x797/0x1570 [ 56.645395][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.645611][ T535] _raw_spin_lock+0x30/0x40 [ 56.645822][ T535] set_mems_allowed+0x1d/0x210 [ 56.645976][ T535] kernel_init_freeable+0x72/0x310 [ 56.646129][ T535] kernel_init+0x20/0x200 [ 56.646266][ T535] ret_from_fork+0x31/0x70 [ 56.646408][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.646548][ T535] [ 56.646548][ T535] other info that might help us debug this: [ 56.646548][ T535] [ 56.646837][ T535] Possible interrupt unsafe locking scenario: [ 56.646837][ T535] [ 56.647040][ T535] CPU0 CPU1 [ 56.647188][ T535] ---- ---- [ 56.647329][ T535] lock(&p->alloc_lock); [ 56.647445][ T535] local_irq_disable(); [ 56.647616][ T535] lock(&ndev->lock); [ 56.647788][ T535] lock(&p->alloc_lock); [ 56.647956][ T535] [ 56.648068][ T535] lock(&ndev->lock); [ 56.648213][ T535] [ 56.648213][ T535] *** DEADLOCK *** [ 56.648213][ T535] [ 56.648413][ T535] 3 locks held by sysctl/535: [ 56.648580][ T535] #0: ffff888005ee13f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 56.648976][ T535] #1: ffffffffbc9969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 56.649423][ T535] #2: ffff888007025580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 56.649816][ T535] [ 56.649816][ T535] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 56.650255][ T535] -> (&ndev->lock){++--}-{2:2} { [ 56.650489][ T535] HARDIRQ-ON-W at: [ 56.650667][ T535] __lock_acquire+0x797/0x1570 [ 56.650959][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.651243][ T535] _raw_write_lock_bh+0x38/0x50 [ 56.651531][ T535] addrconf_permanent_addr+0x6e/0x670 [ 56.651812][ T535] addrconf_notify+0x749/0xd60 [ 56.652109][ T535] notifier_call_chain+0xcd/0x150 [ 56.652395][ T535] __dev_notify_flags+0xe6/0x250 [ 56.652678][ T535] dev_change_flags+0xec/0x160 [ 56.652959][ T535] do_setlink+0x7d6/0x21e0 [ 56.653245][ T535] __rtnl_newlink+0xaa7/0xd80 [ 56.653530][ T535] rtnl_newlink+0x63/0xa0 [ 56.653798][ T535] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 56.654076][ T535] netlink_rcv_skb+0x130/0x360 [ 56.654357][ T535] netlink_unicast+0x449/0x710 [ 56.654629][ T535] netlink_sendmsg+0x723/0xbe0 [ 56.654906][ T535] ____sys_sendmsg+0x7b2/0xa10 [ 56.655177][ T535] ___sys_sendmsg+0xee/0x170 [ 56.655437][ T535] __sys_sendmsg+0xcd/0x170 [ 56.655706][ T535] do_syscall_64+0xc6/0x1e0 [ 56.655975][ T535] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 56.656291][ T535] HARDIRQ-ON-R at: [ 56.656450][ T535] __lock_acquire+0x797/0x1570 [ 56.656715][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.656982][ T535] _raw_read_lock_bh+0x44/0x80 [ 56.657252][ T535] inet6_fill_ifla6_attrs+0x516/0x740 [ 56.657525][ T535] inet6_fill_link_af+0x5e/0xe0 [ 56.657940][ T535] rtnl_fill_ifinfo+0x1612/0x29e0 [ 56.658202][ T535] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 56.658461][ T535] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 56.658781][ T535] rtmsg_ifinfo+0x5b/0xa0 [ 56.659039][ T535] register_netdevice+0x1177/0x1690 [ 56.659307][ T535] register_netdev+0x20/0x40 [ 56.659571][ T535] sit_init_net+0x250/0x4f0 [ 56.659836][ T535] ops_init+0x9b/0x560 [ 56.660045][ T535] register_pernet_operations+0x2db/0x710 [ 56.660374][ T535] register_pernet_device+0x2a/0x60 [ 56.660773][ T535] sit_init+0x23/0xe0 [ 56.660991][ T535] do_one_initcall+0x8d/0x1e0 [ 56.661257][ T535] do_initcalls+0x1b2/0x3e0 [ 56.661520][ T535] kernel_init_freeable+0x232/0x310 [ 56.662053][ T535] kernel_init+0x20/0x200 [ 56.662323][ T535] ret_from_fork+0x31/0x70 [ 56.662586][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.662856][ T535] IN-SOFTIRQ-W at: [ 56.663024][ T535] __lock_acquire+0x797/0x1570 [ 56.663311][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.663590][ T535] _raw_write_lock+0x30/0x40 [ 56.663876][ T535] addrconf_rs_timer+0xa9/0x730 [ 56.664155][ T535] call_timer_fn+0x13b/0x230 [ 56.664439][ T535] __run_timers+0x545/0x810 [ 56.664881][ T535] timer_expire_remote+0x9b/0xe0 [ 56.665172][ T535] tmigr_handle_remote_cpu+0x270/0x430 [ 56.665455][ T535] tmigr_handle_remote_up+0x19f/0x2e0 [ 56.665733][ T535] tmigr_handle_remote+0x21d/0x3a0 [ 56.666013][ T535] __do_softirq+0x1f8/0x5df [ 56.666297][ T535] irq_exit_rcu+0x97/0xc0 [ 56.666582][ T535] sysvec_apic_timer_interrupt+0x75/0x80 [ 56.666928][ T535] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 56.667249][ T535] default_idle+0xf/0x20 [ 56.667464][ T535] default_idle_call+0x6d/0xb0 [ 56.667724][ T535] cpuidle_idle_call+0x1f4/0x280 [ 56.667897][ T535] do_idle+0xf9/0x160 [ 56.668036][ T535] cpu_startup_entry+0x54/0x60 [ 56.668229][ T535] start_secondary+0x21c/0x2b0 [ 56.668488][ T535] common_startup_64+0x12c/0x138 [ 56.668661][ T535] IN-SOFTIRQ-R at: [ 56.668765][ T535] __lock_acquire+0x797/0x1570 [ 56.668937][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.669204][ T535] _raw_read_lock_bh+0x44/0x80 [ 56.669378][ T535] ipv6_get_lladdr+0xa9/0x3e0 [ 56.669555][ T535] addrconf_rs_timer+0x24a/0x730 [ 56.669812][ T535] call_timer_fn+0x13b/0x230 [ 56.669987][ T535] __run_timers+0x545/0x810 [ 56.670165][ T535] timer_expire_remote+0x9b/0xe0 [ 56.670421][ T535] tmigr_handle_remote_cpu+0x270/0x430 [ 56.670594][ T535] tmigr_handle_remote_up+0x19f/0x2e0 [ 56.670773][ T535] tmigr_handle_remote+0x21d/0x3a0 [ 56.670946][ T535] __do_softirq+0x1f8/0x5df [ 56.671213][ T535] irq_exit_rcu+0x97/0xc0 [ 56.671392][ T535] sysvec_apic_timer_interrupt+0x75/0x80 [ 56.671601][ T535] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 56.671889][ T535] default_idle+0xf/0x20 [ 56.672067][ T535] default_idle_call+0x6d/0xb0 [ 56.672252][ T535] cpuidle_idle_call+0x1f4/0x280 [ 56.672508][ T535] do_idle+0xf9/0x160 [ 56.672648][ T535] cpu_startup_entry+0x54/0x60 [ 56.672827][ T535] start_secondary+0x21c/0x2b0 [ 56.672998][ T535] common_startup_64+0x12c/0x138 [ 56.673273][ T535] INITIAL USE at: [ 56.673378][ T535] __lock_acquire+0x797/0x1570 [ 56.673553][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.673726][ T535] _raw_write_lock_bh+0x38/0x50 [ 56.673981][ T535] addrconf_permanent_addr+0x6e/0x670 [ 56.674173][ T535] addrconf_notify+0x749/0xd60 [ 56.674347][ T535] notifier_call_chain+0xcd/0x150 [ 56.674615][ T535] __dev_notify_flags+0xe6/0x250 [ 56.674803][ T535] dev_change_flags+0xec/0x160 [ 56.674980][ T535] do_setlink+0x7d6/0x21e0 [ 56.675249][ T535] __rtnl_newlink+0xaa7/0xd80 [ 56.675423][ T535] rtnl_newlink+0x63/0xa0 [ 56.675597][ T535] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 56.675772][ T535] netlink_rcv_skb+0x130/0x360 [ 56.676033][ T535] netlink_unicast+0x449/0x710 [ 56.676203][ T535] netlink_sendmsg+0x723/0xbe0 [ 56.676373][ T535] ____sys_sendmsg+0x7b2/0xa10 [ 56.676547][ T535] ___sys_sendmsg+0xee/0x170 [ 56.676720][ T535] __sys_sendmsg+0xcd/0x170 [ 56.676894][ T535] do_syscall_64+0xc6/0x1e0 [ 56.677073][ T535] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 56.677281][ T535] INITIAL READ USE at: [ 56.677385][ T535] __lock_acquire+0x797/0x1570 [ 56.677559][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.677815][ T535] _raw_read_lock_bh+0x44/0x80 [ 56.677988][ T535] inet6_fill_ifla6_attrs+0x516/0x740 [ 56.678199][ T535] inet6_fill_link_af+0x5e/0xe0 [ 56.678460][ T535] rtnl_fill_ifinfo+0x1612/0x29e0 [ 56.678632][ T535] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 56.678840][ T535] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 56.679142][ T535] rtmsg_ifinfo+0x5b/0xa0 [ 56.679318][ T535] register_netdevice+0x1177/0x1690 [ 56.679530][ T535] register_netdev+0x20/0x40 [ 56.679703][ T535] sit_init_net+0x250/0x4f0 [ 56.679877][ T535] ops_init+0x9b/0x560 [ 56.680048][ T535] register_pernet_operations+0x2db/0x710 [ 56.680253][ T535] register_pernet_device+0x2a/0x60 [ 56.680541][ T535] sit_init+0x23/0xe0 [ 56.680718][ T535] do_one_initcall+0x8d/0x1e0 [ 56.680893][ T535] do_initcalls+0x1b2/0x3e0 [ 56.681147][ T535] kernel_init_freeable+0x232/0x310 [ 56.681353][ T535] kernel_init+0x20/0x200 [ 56.681528][ T535] ret_from_fork+0x31/0x70 [ 56.681787][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.681964][ T535] } [ 56.682036][ T535] ... key at: [] __key.37+0x0/0x40 [ 56.682257][ T535] [ 56.682257][ T535] the dependencies between the lock to be acquired [ 56.682259][ T535] and SOFTIRQ-irq-unsafe lock: [ 56.682704][ T535] -> (&p->alloc_lock){+.+.}-{2:2} { [ 56.682848][ T535] HARDIRQ-ON-W at: [ 56.682955][ T535] __lock_acquire+0x797/0x1570 [ 56.683218][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.683391][ T535] _raw_spin_lock+0x30/0x40 [ 56.683564][ T535] set_mems_allowed+0x1d/0x210 [ 56.683819][ T535] kernel_init_freeable+0x72/0x310 [ 56.683992][ T535] kernel_init+0x20/0x200 [ 56.684167][ T535] ret_from_fork+0x31/0x70 [ 56.684341][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.684602][ T535] SOFTIRQ-ON-W at: [ 56.684707][ T535] __lock_acquire+0x797/0x1570 [ 56.684897][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.685236][ T535] _raw_spin_lock+0x30/0x40 [ 56.685411][ T535] set_mems_allowed+0x1d/0x210 [ 56.685583][ T535] kernel_init_freeable+0x72/0x310 [ 56.685757][ T535] kernel_init+0x20/0x200 [ 56.686026][ T535] ret_from_fork+0x31/0x70 [ 56.686202][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.686376][ T535] INITIAL USE at: [ 56.686481][ T535] __lock_acquire+0x797/0x1570 [ 56.686654][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.686827][ T535] _raw_spin_lock+0x30/0x40 [ 56.687001][ T535] set_mems_allowed+0x1d/0x210 [ 56.687179][ T535] kernel_init_freeable+0x72/0x310 [ 56.687353][ T535] kernel_init+0x20/0x200 [ 56.687526][ T535] ret_from_fork+0x31/0x70 [ 56.687782][ T535] ret_from_fork_asm+0x1a/0x30 [ 56.687955][ T535] } [ 56.688025][ T535] ... key at: [] __key.387+0x0/0x40 [ 56.688239][ T535] ... acquired at: [ 56.688347][ T535] check_prev_add+0x194/0xce0 [ 56.688567][ T535] validate_chain+0x71d/0x9b0 [ 56.688705][ T535] __lock_acquire+0xaf0/0x1570 [ 56.688845][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.688983][ T535] _raw_spin_lock+0x30/0x40 [ 56.689202][ T535] __get_task_comm+0x27/0x70 [ 56.689342][ T535] ref_tracker_alloc+0x2ee/0x490 [ 56.689483][ T535] netdev_get_by_index+0x5e/0x80 [ 56.689627][ T535] fib6_nh_init+0x3d8/0x15b0 [ 56.689855][ T535] ip6_route_info_create+0xf18/0x17d0 [ 56.689998][ T535] addrconf_f6i_alloc+0x265/0x560 [ 56.690135][ T535] __ipv6_dev_ac_inc+0x25f/0xb10 [ 56.690274][ T535] addrconf_join_anycast+0x1c0/0x220 [ 56.690492][ T535] dev_forward_change+0x2a6/0x7b0 [ 56.690630][ T535] addrconf_fixup_forwarding+0x23f/0x460 [ 56.690805][ T535] addrconf_sysctl_forward+0x212/0x2b0 [ 56.690945][ T535] proc_sys_call_handler+0x403/0x5e0 [ 56.691164][ T535] vfs_write+0x9e5/0x10a0 [ 56.691304][ T535] ksys_write+0xf5/0x1e0 [ 56.691442][ T535] do_syscall_64+0xc6/0x1e0 [ 56.691581][ T535] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 56.691833][ T535] [ 56.691905][ T535] [ 56.691905][ T535] stack backtrace: [ 56.692075][ T535] CPU: 3 PID: 535 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 56.692285][ T535] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 56.692670][ T535] Call Trace: [ 56.692774][ T535] [ 56.692846][ T535] dump_stack_lvl+0x82/0xd0 [ 56.692990][ T535] print_bad_irq_dependency+0x957/0xd40 [ 56.693212][ T535] ? hlock_class+0x4e/0x130 [ 56.693351][ T535] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 56.693529][ T535] ? __pfx_usage_skip+0x10/0x10 [ 56.693666][ T535] ? __bfs+0x246/0x650 [ 56.693926][ T535] ? __pfx_usage_match+0x10/0x10 [ 56.694066][ T535] check_irq_usage+0x596/0x850 [ 56.694223][ T535] ? __pfx_check_irq_usage+0x10/0x10 [ 56.694360][ T535] ? __bfs+0x246/0x650 [ 56.694464][ T535] ? __pfx_hlock_conflict+0x10/0x10 [ 56.694603][ T535] ? check_path.constprop.0+0x24/0x50 [ 56.694745][ T535] ? check_noncircular+0x14c/0x3e0 [ 56.694892][ T535] ? __pfx_check_noncircular+0x10/0x10 [ 56.695034][ T535] ? check_prev_add+0x194/0xce0 [ 56.695184][ T535] check_prev_add+0x194/0xce0 [ 56.695325][ T535] ? validate_chain+0x130/0x9b0 [ 56.695461][ T535] validate_chain+0x71d/0x9b0 [ 56.695597][ T535] ? mark_lock+0x38/0x3e0 [ 56.695702][ T535] ? __pfx_validate_chain+0x10/0x10 [ 56.696020][ T535] ? hlock_class+0x4e/0x130 [ 56.696164][ T535] ? mark_lock+0x38/0x3e0 [ 56.696278][ T535] __lock_acquire+0xaf0/0x1570 [ 56.696416][ T535] lock_acquire.part.0+0xeb/0x330 [ 56.696552][ T535] ? __get_task_comm+0x27/0x70 [ 56.696689][ T535] ? mark_lock+0x38/0x3e0 [ 56.696791][ T535] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 56.696927][ T535] ? trace_lock_acquire+0x135/0x1c0 [ 56.697063][ T535] ? __get_task_comm+0x27/0x70 [ 56.697215][ T535] ? lock_acquire+0x32/0xc0 [ 56.697350][ T535] ? __get_task_comm+0x27/0x70 [ 56.697485][ T535] _raw_spin_lock+0x30/0x40 [ 56.697619][ T535] ? __get_task_comm+0x27/0x70 [ 56.697833][ T535] __get_task_comm+0x27/0x70 [ 56.697972][ T535] ref_tracker_alloc+0x2ee/0x490 [ 56.698130][ T535] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 56.698266][ T535] ? dev_get_by_index+0x177/0x270 [ 56.698481][ T535] ? netdev_get_by_index+0x5e/0x80 [ 56.698622][ T535] ? fib6_nh_init+0x3d8/0x15b0 [ 56.698757][ T535] ? ip6_route_info_create+0xf18/0x17d0 [ 56.698892][ T535] ? addrconf_f6i_alloc+0x265/0x560 [ 56.699119][ T535] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 56.699256][ T535] ? addrconf_join_anycast+0x1c0/0x220 [ 56.699390][ T535] ? dev_forward_change+0x2a6/0x7b0 [ 56.699525][ T535] ? addrconf_fixup_forwarding+0x23f/0x460 [ 56.699775][ T535] ? addrconf_sysctl_forward+0x212/0x2b0 [ 56.699911][ T535] ? proc_sys_call_handler+0x403/0x5e0 [ 56.700048][ T535] ? vfs_write+0x9e5/0x10a0 [ 56.700190][ T535] ? ksys_write+0xf5/0x1e0 [ 56.700325][ T535] ? do_syscall_64+0xc6/0x1e0 [ 56.700539][ T535] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 56.700705][ T535] ? dev_get_by_index+0x177/0x270 [ 56.700841][ T535] netdev_get_by_index+0x5e/0x80 [ 56.700983][ T535] fib6_nh_init+0x3d8/0x15b0 [ 56.701227][ T535] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 56.701396][ T535] ? __pfx_fib6_nh_init+0x10/0x10 [ 56.701531][ T535] ? kasan_save_track+0x14/0x30 [ 56.701668][ T535] ? __kasan_kmalloc+0x7f/0x90 [ 56.701882][ T535] ? __kmalloc+0x1d7/0x3c0 [ 56.702021][ T535] ? fib6_get_table+0x116/0x290 [ 56.702157][ T535] ip6_route_info_create+0xf18/0x17d0 [ 56.702298][ T535] ? __lock_release+0x103/0x460 [ 56.702517][ T535] ? __pfx_ip6_route_info_create+0x10/0x10 [ 56.702685][ T535] ? addrconf_f6i_alloc+0x12d/0x560 [ 56.702824][ T535] addrconf_f6i_alloc+0x265/0x560 [ 56.702962][ T535] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 56.703193][ T535] ? do_raw_write_lock+0x122/0x3b0 [ 56.703328][ T535] ? __pfx_do_raw_write_lock+0x10/0x10 [ 56.703464][ T535] ? lock_acquire+0x32/0xc0 [ 56.703605][ T535] __ipv6_dev_ac_inc+0x25f/0xb10 [ 56.703822][ T535] addrconf_join_anycast+0x1c0/0x220 [ 56.703960][ T535] ? mark_lock+0x38/0x3e0 [ 56.704066][ T535] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 56.704235][ T535] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 56.704484][ T535] dev_forward_change+0x2a6/0x7b0 [ 56.704620][ T535] ? __pfx_dev_forward_change+0x10/0x10 [ 56.704758][ T535] addrconf_fixup_forwarding+0x23f/0x460 [ 56.704911][ T535] addrconf_sysctl_forward+0x212/0x2b0 [ 56.705126][ T535] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 56.705296][ T535] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 56.705464][ T535] ? trace_kmalloc+0x2a/0xe0 [ 56.705597][ T535] ? __kmalloc_node+0x220/0x400 [ 56.705811][ T535] ? proc_sys_call_handler+0x30b/0x5e0 [ 56.705951][ T535] proc_sys_call_handler+0x403/0x5e0 [ 56.706090][ T535] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 56.706265][ T535] ? __lock_acquire+0xaf0/0x1570 [ 56.706562][ T535] vfs_write+0x9e5/0x10a0 [ 56.706666][ T535] ? do_user_addr_fault+0x449/0xbe0 [ 56.706802][ T535] ? __pfx_vfs_write+0x10/0x10 [ 56.706940][ T535] ? find_held_lock+0x2c/0x110 [ 56.707077][ T535] ? __pfx___lock_release+0x10/0x10 [ 56.707301][ T535] ? __fget_light+0x53/0x1e0 [ 56.707444][ T535] ksys_write+0xf5/0x1e0 [ 56.707547][ T535] ? __pfx_ksys_write+0x10/0x10 [ 56.707681][ T535] ? do_user_addr_fault+0x4bd/0xbe0 [ 56.707904][ T535] do_syscall_64+0xc6/0x1e0 [ 56.708042][ T535] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 56.708209][ T535] RIP: 0033:0x7f9c645a1957 [ 56.708352][ T535] 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 [ 56.708840][ T535] RSP: 002b:00007ffefe4500b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 56.709047][ T535] RAX: ffffffffffffffda RBX: 00005627841fe360 RCX: 00007f9c645a1957 [ 56.709249][ T535] RDX: 0000000000000002 RSI: 00005627841fe3a0 RDI: 0000000000000005 [ 56.709455][ T535] RBP: 00005627842004d0 R08: 0000000000000003 R09: 0000000000000077 [ 56.709746][ T535] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 56.709949][ T535] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f9c646589c0 [ 56.710160][ T535] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr