[ 35.184079][ T309] ip (309) used greatest stack depth: 23680 bytes left [ 39.015349][ T342] [ 39.015472][ T342] ===================================================== [ 39.015681][ T342] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.015922][ T342] 6.9.0-rc1-virtme #1 Not tainted [ 39.016082][ T342] ----------------------------------------------------- [ 39.016268][ T342] sysctl/342 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.016510][ T342] ffff888005a0cee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.016802][ T342] [ 39.016802][ T342] and this task is already holding: [ 39.017039][ T342] ffff8880061dd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.017334][ T342] which would create a new lock dependency: [ 39.017537][ T342] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.017789][ T342] [ 39.017789][ T342] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.018068][ T342] (&ndev->lock){++--}-{2:2} [ 39.018073][ T342] [ 39.018073][ T342] ... which became SOFTIRQ-irq-safe at: [ 39.018462][ T342] __lock_acquire+0x797/0x1570 [ 39.018617][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.018765][ T342] _raw_write_lock+0x30/0x40 [ 39.018929][ T342] addrconf_rs_timer+0xa9/0x730 [ 39.019080][ T342] call_timer_fn+0x13b/0x230 [ 39.019229][ T342] __run_timers+0x545/0x810 [ 39.019375][ T342] run_timer_softirq+0xe8/0x1b0 [ 39.019530][ T342] __do_softirq+0x1f8/0x5df [ 39.019689][ T342] irq_exit_rcu+0x97/0xc0 [ 39.019847][ T342] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.019998][ T342] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.020169][ T342] default_idle+0xf/0x20 [ 39.020272][ T342] default_idle_call+0x6d/0xb0 [ 39.020415][ T342] cpuidle_idle_call+0x1f4/0x280 [ 39.020566][ T342] do_idle+0xf9/0x160 [ 39.020674][ T342] cpu_startup_entry+0x54/0x60 [ 39.020815][ T342] start_secondary+0x21c/0x2b0 [ 39.020959][ T342] common_startup_64+0x12c/0x138 [ 39.021113][ T342] [ 39.021113][ T342] to a SOFTIRQ-irq-unsafe lock: [ 39.021300][ T342] (&p->alloc_lock){+.+.}-{2:2} [ 39.021305][ T342] [ 39.021305][ T342] ... which became SOFTIRQ-irq-unsafe at: [ 39.021684][ T342] ... [ 39.021685][ T342] __lock_acquire+0x797/0x1570 [ 39.021914][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.022083][ T342] _raw_spin_lock+0x30/0x40 [ 39.022244][ T342] set_mems_allowed+0x1d/0x210 [ 39.022405][ T342] kernel_init_freeable+0x72/0x310 [ 39.022565][ T342] kernel_init+0x20/0x200 [ 39.022722][ T342] ret_from_fork+0x31/0x70 [ 39.022890][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.023045][ T342] [ 39.023045][ T342] other info that might help us debug this: [ 39.023045][ T342] [ 39.023357][ T342] Possible interrupt unsafe locking scenario: [ 39.023357][ T342] [ 39.023589][ T342] CPU0 CPU1 [ 39.023750][ T342] ---- ---- [ 39.023910][ T342] lock(&p->alloc_lock); [ 39.024032][ T342] local_irq_disable(); [ 39.024227][ T342] lock(&ndev->lock); [ 39.024424][ T342] lock(&p->alloc_lock); [ 39.024630][ T342] [ 39.024750][ T342] lock(&ndev->lock); [ 39.024883][ T342] [ 39.024883][ T342] *** DEADLOCK *** [ 39.024883][ T342] [ 39.025111][ T342] 3 locks held by sysctl/342: [ 39.025272][ T342] #0: ffff888005ba43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.025558][ T342] #1: ffffffff88b969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.025902][ T342] #2: ffff8880061dd580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.026179][ T342] [ 39.026179][ T342] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.026494][ T342] -> (&ndev->lock){++--}-{2:2} { [ 39.026672][ T342] HARDIRQ-ON-W at: [ 39.026800][ T342] __lock_acquire+0x797/0x1570 [ 39.027027][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.027228][ T342] _raw_write_lock_bh+0x38/0x50 [ 39.027428][ T342] addrconf_permanent_addr+0x6e/0x670 [ 39.027632][ T342] addrconf_notify+0x749/0xd60 [ 39.027835][ T342] notifier_call_chain+0xcd/0x150 [ 39.028043][ T342] __dev_notify_flags+0xe6/0x250 [ 39.028248][ T342] dev_change_flags+0xec/0x160 [ 39.028438][ T342] do_setlink+0x7d6/0x21e0 [ 39.028634][ T342] __rtnl_newlink+0xaa7/0xd80 [ 39.028838][ T342] rtnl_newlink+0x63/0xa0 [ 39.029044][ T342] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.029233][ T342] netlink_rcv_skb+0x130/0x360 [ 39.029405][ T342] netlink_unicast+0x449/0x710 [ 39.029584][ T342] netlink_sendmsg+0x723/0xbe0 [ 39.029753][ T342] ____sys_sendmsg+0x7b2/0xa10 [ 39.029928][ T342] ___sys_sendmsg+0xee/0x170 [ 39.030099][ T342] __sys_sendmsg+0xcd/0x170 [ 39.030271][ T342] do_syscall_64+0xc6/0x1e0 [ 39.030454][ T342] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.030666][ T342] HARDIRQ-ON-R at: [ 39.030774][ T342] __lock_acquire+0x797/0x1570 [ 39.030968][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.031142][ T342] _raw_read_lock_bh+0x44/0x80 [ 39.031315][ T342] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.031490][ T342] inet6_fill_link_af+0x5e/0xe0 [ 39.031665][ T342] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.031841][ T342] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.032011][ T342] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.032220][ T342] rtmsg_ifinfo+0x5b/0xa0 [ 39.032395][ T342] register_netdevice+0x1177/0x1690 [ 39.032573][ T342] register_netdev+0x20/0x40 [ 39.032750][ T342] sit_init_net+0x250/0x4f0 [ 39.032933][ T342] ops_init+0x9b/0x560 [ 39.033072][ T342] register_pernet_operations+0x2db/0x710 [ 39.033305][ T342] register_pernet_device+0x2a/0x60 [ 39.033479][ T342] sit_init+0x23/0xe0 [ 39.033616][ T342] do_one_initcall+0x8d/0x1e0 [ 39.033793][ T342] do_initcalls+0x1b2/0x3e0 [ 39.033965][ T342] kernel_init_freeable+0x232/0x310 [ 39.034147][ T342] kernel_init+0x20/0x200 [ 39.034317][ T342] ret_from_fork+0x31/0x70 [ 39.034490][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.034664][ T342] IN-SOFTIRQ-W at: [ 39.034775][ T342] __lock_acquire+0x797/0x1570 [ 39.034978][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.035156][ T342] _raw_write_lock+0x30/0x40 [ 39.035340][ T342] addrconf_rs_timer+0xa9/0x730 [ 39.035515][ T342] call_timer_fn+0x13b/0x230 [ 39.035692][ T342] __run_timers+0x545/0x810 [ 39.035872][ T342] run_timer_softirq+0xe8/0x1b0 [ 39.036056][ T342] __do_softirq+0x1f8/0x5df [ 39.036227][ T342] irq_exit_rcu+0x97/0xc0 [ 39.036404][ T342] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.036610][ T342] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.036824][ T342] default_idle+0xf/0x20 [ 39.036996][ T342] default_idle_call+0x6d/0xb0 [ 39.037203][ T342] cpuidle_idle_call+0x1f4/0x280 [ 39.037394][ T342] do_idle+0xf9/0x160 [ 39.037535][ T342] cpu_startup_entry+0x54/0x60 [ 39.037709][ T342] start_secondary+0x21c/0x2b0 [ 39.037885][ T342] common_startup_64+0x12c/0x138 [ 39.038055][ T342] IN-SOFTIRQ-R at: [ 39.038156][ T342] __lock_acquire+0x797/0x1570 [ 39.038329][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.038531][ T342] _raw_read_lock_bh+0x44/0x80 [ 39.038731][ T342] ipv6_get_lladdr+0xa9/0x3e0 [ 39.038928][ T342] addrconf_rs_timer+0x24a/0x730 [ 39.039102][ T342] call_timer_fn+0x13b/0x230 [ 39.039273][ T342] __run_timers+0x545/0x810 [ 39.039444][ T342] run_timer_softirq+0xe8/0x1b0 [ 39.039616][ T342] __do_softirq+0x1f8/0x5df [ 39.039811][ T342] irq_exit_rcu+0x97/0xc0 [ 39.039985][ T342] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.040195][ T342] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.040399][ T342] default_idle+0xf/0x20 [ 39.040569][ T342] default_idle_call+0x6d/0xb0 [ 39.040738][ T342] cpuidle_idle_call+0x1f4/0x280 [ 39.040917][ T342] do_idle+0xf9/0x160 [ 39.041063][ T342] cpu_startup_entry+0x54/0x60 [ 39.041238][ T342] start_secondary+0x21c/0x2b0 [ 39.041411][ T342] common_startup_64+0x12c/0x138 [ 39.041582][ T342] INITIAL USE at: [ 39.041685][ T342] __lock_acquire+0x797/0x1570 [ 39.041855][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.042043][ T342] _raw_write_lock_bh+0x38/0x50 [ 39.042226][ T342] addrconf_permanent_addr+0x6e/0x670 [ 39.042395][ T342] addrconf_notify+0x749/0xd60 [ 39.042567][ T342] notifier_call_chain+0xcd/0x150 [ 39.042738][ T342] __dev_notify_flags+0xe6/0x250 [ 39.042909][ T342] dev_change_flags+0xec/0x160 [ 39.043109][ T342] do_setlink+0x7d6/0x21e0 [ 39.043389][ T342] __rtnl_newlink+0xaa7/0xd80 [ 39.043584][ T342] rtnl_newlink+0x63/0xa0 [ 39.043760][ T342] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.044014][ T342] netlink_rcv_skb+0x130/0x360 [ 39.044187][ T342] netlink_unicast+0x449/0x710 [ 39.044359][ T342] netlink_sendmsg+0x723/0xbe0 [ 39.044534][ T342] ____sys_sendmsg+0x7b2/0xa10 [ 39.044800][ T342] ___sys_sendmsg+0xee/0x170 [ 39.044972][ T342] __sys_sendmsg+0xcd/0x170 [ 39.045147][ T342] do_syscall_64+0xc6/0x1e0 [ 39.045327][ T342] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.045532][ T342] INITIAL READ USE at: [ 39.045636][ T342] __lock_acquire+0x797/0x1570 [ 39.045817][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.045990][ T342] _raw_read_lock_bh+0x44/0x80 [ 39.046173][ T342] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.046378][ T342] inet6_fill_link_af+0x5e/0xe0 [ 39.046723][ T342] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.046917][ T342] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.047128][ T342] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.047337][ T342] rtmsg_ifinfo+0x5b/0xa0 [ 39.047516][ T342] register_netdevice+0x1177/0x1690 [ 39.047761][ T342] register_netdev+0x20/0x40 [ 39.047962][ T342] sit_init_net+0x250/0x4f0 [ 39.048164][ T342] ops_init+0x9b/0x560 [ 39.048370][ T342] register_pernet_operations+0x2db/0x710 [ 39.048729][ T342] register_pernet_device+0x2a/0x60 [ 39.048968][ T342] sit_init+0x23/0xe0 [ 39.049170][ T342] do_one_initcall+0x8d/0x1e0 [ 39.049373][ T342] do_initcalls+0x1b2/0x3e0 [ 39.049578][ T342] kernel_init_freeable+0x232/0x310 [ 39.049822][ T342] kernel_init+0x20/0x200 [ 39.050022][ T342] ret_from_fork+0x31/0x70 [ 39.050229][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.050439][ T342] } [ 39.050522][ T342] ... key at: [] __key.37+0x0/0x40 [ 39.050764][ T342] [ 39.050764][ T342] the dependencies between the lock to be acquired [ 39.050767][ T342] and SOFTIRQ-irq-unsafe lock: [ 39.051282][ T342] -> (&p->alloc_lock){+.+.}-{2:2} { [ 39.051458][ T342] HARDIRQ-ON-W at: [ 39.051675][ T342] __lock_acquire+0x797/0x1570 [ 39.051881][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.052087][ T342] _raw_spin_lock+0x30/0x40 [ 39.052320][ T342] set_mems_allowed+0x1d/0x210 [ 39.052511][ T342] kernel_init_freeable+0x72/0x310 [ 39.052696][ T342] kernel_init+0x20/0x200 [ 39.052887][ T342] ret_from_fork+0x31/0x70 [ 39.053073][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.053279][ T342] SOFTIRQ-ON-W at: [ 39.053396][ T342] __lock_acquire+0x797/0x1570 [ 39.053578][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.053886][ T342] _raw_spin_lock+0x30/0x40 [ 39.054076][ T342] set_mems_allowed+0x1d/0x210 [ 39.054257][ T342] kernel_init_freeable+0x72/0x310 [ 39.054527][ T342] kernel_init+0x20/0x200 [ 39.054711][ T342] ret_from_fork+0x31/0x70 [ 39.054941][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.055113][ T342] INITIAL USE at: [ 39.055307][ T342] __lock_acquire+0x797/0x1570 [ 39.055503][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.055678][ T342] _raw_spin_lock+0x30/0x40 [ 39.055864][ T342] set_mems_allowed+0x1d/0x210 [ 39.056117][ T342] kernel_init_freeable+0x72/0x310 [ 39.056295][ T342] kernel_init+0x20/0x200 [ 39.056467][ T342] ret_from_fork+0x31/0x70 [ 39.056742][ T342] ret_from_fork_asm+0x1a/0x30 [ 39.056917][ T342] } [ 39.056988][ T342] ... key at: [] __key.387+0x0/0x40 [ 39.057200][ T342] ... acquired at: [ 39.057312][ T342] check_prev_add+0x194/0xce0 [ 39.057465][ T342] validate_chain+0x71d/0x9b0 [ 39.057613][ T342] __lock_acquire+0xaf0/0x1570 [ 39.057759][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.057980][ T342] _raw_spin_lock+0x30/0x40 [ 39.058116][ T342] __get_task_comm+0x27/0x70 [ 39.058254][ T342] ref_tracker_alloc+0x2ee/0x490 [ 39.058393][ T342] netdev_get_by_index+0x5e/0x80 [ 39.058528][ T342] fib6_nh_init+0x3d8/0x15b0 [ 39.058765][ T342] ip6_route_info_create+0xf18/0x17d0 [ 39.058923][ T342] addrconf_f6i_alloc+0x265/0x560 [ 39.059061][ T342] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.059207][ T342] addrconf_join_anycast+0x1c0/0x220 [ 39.059344][ T342] dev_forward_change+0x2a6/0x7b0 [ 39.059481][ T342] addrconf_fixup_forwarding+0x23f/0x460 [ 39.059654][ T342] addrconf_sysctl_forward+0x212/0x2b0 [ 39.059791][ T342] proc_sys_call_handler+0x403/0x5e0 [ 39.060009][ T342] vfs_write+0x9e5/0x10a0 [ 39.060148][ T342] ksys_write+0xf5/0x1e0 [ 39.060286][ T342] do_syscall_64+0xc6/0x1e0 [ 39.060423][ T342] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.060710][ T342] [ 39.060782][ T342] [ 39.060782][ T342] stack backtrace: [ 39.060948][ T342] CPU: 1 PID: 342 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 39.061155][ T342] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 39.061489][ T342] Call Trace: [ 39.061595][ T342] [ 39.061666][ T342] dump_stack_lvl+0x82/0xd0 [ 39.061807][ T342] print_bad_irq_dependency+0x957/0xd40 [ 39.061946][ T342] ? hlock_class+0x4e/0x130 [ 39.062093][ T342] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 39.062262][ T342] ? __pfx_usage_skip+0x10/0x10 [ 39.062404][ T342] ? __bfs+0x246/0x650 [ 39.062590][ T342] ? __pfx_usage_match+0x10/0x10 [ 39.062726][ T342] check_irq_usage+0x596/0x850 [ 39.062891][ T342] ? __pfx_check_irq_usage+0x10/0x10 [ 39.063029][ T342] ? __bfs+0x246/0x650 [ 39.063211][ T342] ? __pfx_hlock_conflict+0x10/0x10 [ 39.063353][ T342] ? check_path.constprop.0+0x24/0x50 [ 39.063489][ T342] ? check_noncircular+0x14c/0x3e0 [ 39.063626][ T342] ? __pfx_check_noncircular+0x10/0x10 [ 39.063803][ T342] ? check_prev_add+0x194/0xce0 [ 39.064037][ T342] check_prev_add+0x194/0xce0 [ 39.064184][ T342] ? validate_chain+0x130/0x9b0 [ 39.064332][ T342] validate_chain+0x71d/0x9b0 [ 39.064481][ T342] ? mark_lock+0x38/0x3e0 [ 39.064669][ T342] ? __pfx_validate_chain+0x10/0x10 [ 39.064806][ T342] ? hlock_class+0x4e/0x130 [ 39.064942][ T342] ? mark_lock+0x38/0x3e0 [ 39.065047][ T342] __lock_acquire+0xaf0/0x1570 [ 39.065191][ T342] lock_acquire.part.0+0xeb/0x330 [ 39.065409][ T342] ? __get_task_comm+0x27/0x70 [ 39.065546][ T342] ? mark_lock+0x38/0x3e0 [ 39.065654][ T342] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 39.065791][ T342] ? trace_lock_acquire+0x135/0x1c0 [ 39.066009][ T342] ? __get_task_comm+0x27/0x70 [ 39.066152][ T342] ? lock_acquire+0x32/0xc0 [ 39.066290][ T342] ? __get_task_comm+0x27/0x70 [ 39.066427][ T342] _raw_spin_lock+0x30/0x40 [ 39.066643][ T342] ? __get_task_comm+0x27/0x70 [ 39.066789][ T342] __get_task_comm+0x27/0x70 [ 39.066948][ T342] ref_tracker_alloc+0x2ee/0x490 [ 39.067084][ T342] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 39.067222][ T342] ? dev_get_by_index+0x177/0x270 [ 39.067359][ T342] ? netdev_get_by_index+0x5e/0x80 [ 39.067494][ T342] ? fib6_nh_init+0x3d8/0x15b0 [ 39.067630][ T342] ? ip6_route_info_create+0xf18/0x17d0 [ 39.067767][ T342] ? addrconf_f6i_alloc+0x265/0x560 [ 39.067909][ T342] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.068048][ T342] ? addrconf_join_anycast+0x1c0/0x220 [ 39.068187][ T342] ? dev_forward_change+0x2a6/0x7b0 [ 39.068324][ T342] ? addrconf_fixup_forwarding+0x23f/0x460 [ 39.068657][ T342] ? addrconf_sysctl_forward+0x212/0x2b0 [ 39.068807][ T342] ? proc_sys_call_handler+0x403/0x5e0 [ 39.069005][ T342] ? vfs_write+0x9e5/0x10a0 [ 39.069236][ T342] ? ksys_write+0xf5/0x1e0 [ 39.069625][ T342] ? do_syscall_64+0xc6/0x1e0 [ 39.069858][ T342] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.070148][ T342] ? dev_get_by_index+0x177/0x270 [ 39.070377][ T342] netdev_get_by_index+0x5e/0x80 [ 39.070753][ T342] fib6_nh_init+0x3d8/0x15b0 [ 39.070979][ T342] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 39.071258][ T342] ? __pfx_fib6_nh_init+0x10/0x10 [ 39.071479][ T342] ? kasan_save_track+0x14/0x30 [ 39.071704][ T342] ? __kasan_kmalloc+0x7f/0x90 [ 39.071921][ T342] ? __kmalloc+0x1d7/0x3c0 [ 39.072138][ T342] ? fib6_get_table+0x116/0x290 [ 39.072391][ T342] ip6_route_info_create+0xf18/0x17d0 [ 39.072617][ T342] ? __lock_release+0x103/0x460 [ 39.072835][ T342] ? __pfx_ip6_route_info_create+0x10/0x10 [ 39.073106][ T342] ? addrconf_f6i_alloc+0x12d/0x560 [ 39.073337][ T342] addrconf_f6i_alloc+0x265/0x560 [ 39.073730][ T342] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 39.073958][ T342] ? do_raw_write_lock+0x122/0x3b0 [ 39.074173][ T342] ? __pfx_do_raw_write_lock+0x10/0x10 [ 39.074395][ T342] ? lock_acquire+0x32/0xc0 [ 39.074624][ T342] __ipv6_dev_ac_inc+0x25f/0xb10 [ 39.074846][ T342] addrconf_join_anycast+0x1c0/0x220 [ 39.075072][ T342] ? mark_lock+0x38/0x3e0 [ 39.075244][ T342] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 39.075529][ T342] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 39.075805][ T342] dev_forward_change+0x2a6/0x7b0 [ 39.076039][ T342] ? __pfx_dev_forward_change+0x10/0x10 [ 39.076270][ T342] addrconf_fixup_forwarding+0x23f/0x460 [ 39.076498][ T342] addrconf_sysctl_forward+0x212/0x2b0 [ 39.076881][ T342] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.077161][ T342] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 39.077446][ T342] ? trace_kmalloc+0x2a/0xe0 [ 39.077670][ T342] ? __kmalloc_node+0x220/0x400 [ 39.077889][ T342] ? proc_sys_call_handler+0x30b/0x5e0 [ 39.078115][ T342] proc_sys_call_handler+0x403/0x5e0 [ 39.078343][ T342] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 39.078621][ T342] ? __lock_acquire+0xaf0/0x1570 [ 39.078865][ T342] vfs_write+0x9e5/0x10a0 [ 39.079039][ T342] ? do_user_addr_fault+0x449/0xbe0 [ 39.079272][ T342] ? __pfx_vfs_write+0x10/0x10 [ 39.079492][ T342] ? find_held_lock+0x2c/0x110 [ 39.079878][ T342] ? __pfx___lock_release+0x10/0x10 [ 39.080093][ T342] ? __fget_light+0x53/0x1e0 [ 39.080314][ T342] ksys_write+0xf5/0x1e0 [ 39.080479][ T342] ? __pfx_ksys_write+0x10/0x10 [ 39.080746][ T342] ? do_user_addr_fault+0x4bd/0xbe0 [ 39.080971][ T342] do_syscall_64+0xc6/0x1e0 [ 39.081223][ T342] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.081520][ T342] RIP: 0033:0x7f8444f8c957 [ 39.081789][ T342] 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 [ 39.082603][ T342] RSP: 002b:00007ffc5e78a158 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 39.083100][ T342] RAX: ffffffffffffffda RBX: 00005562ed361360 RCX: 00007f8444f8c957 [ 39.083458][ T342] RDX: 0000000000000002 RSI: 00005562ed3613a0 RDI: 0000000000000005 [ 39.083799][ T342] RBP: 00005562ed3634d0 R08: 0000000000000003 R09: 0000000000000077 [ 39.084291][ T342] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 39.084653][ T342] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f84450439c0 [ 39.084999][ T342] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr