[ 33.902774][ T314] gre: GRE over IPv4 demultiplexor driver [ 33.980372][ T314] ip6_gre: GRE over IPv6 tunneling driver [ 36.416731][ T336] 8021q: 802.1Q VLAN Support v1.8 [ 40.897411][ T374] GACT probability NOT on [ 42.872453][ T391] ip (391) used greatest stack depth: 23872 bytes left [ 45.284824][ T411] [ 45.284938][ T411] ===================================================== [ 45.285133][ T411] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 45.285362][ T411] 6.9.0-rc1-virtme #1 Not tainted [ 45.285514][ T411] ----------------------------------------------------- [ 45.285713][ T411] sysctl/411 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 45.285913][ T411] ffff888005972c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 45.286165][ T411] [ 45.286165][ T411] and this task is already holding: [ 45.286375][ T411] ffff888005ba5580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.286642][ T411] which would create a new lock dependency: [ 45.286814][ T411] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 45.287051][ T411] [ 45.287051][ T411] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 45.287298][ T411] (&ndev->lock){++--}-{2:2} [ 45.287302][ T411] [ 45.287302][ T411] ... which became SOFTIRQ-irq-safe at: [ 45.287636][ T411] __lock_acquire+0x797/0x1570 [ 45.287793][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.287937][ T411] _raw_write_lock+0x30/0x40 [ 45.288080][ T411] addrconf_rs_timer+0xa9/0x730 [ 45.288217][ T411] call_timer_fn+0x13b/0x230 [ 45.288360][ T411] __run_timers+0x545/0x810 [ 45.288496][ T411] timer_expire_remote+0x9b/0xe0 [ 45.288636][ T411] tmigr_handle_remote_cpu+0x270/0x430 [ 45.288804][ T411] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.288941][ T411] tmigr_handle_remote+0x21d/0x3a0 [ 45.289090][ T411] __do_softirq+0x1f8/0x5df [ 45.289226][ T411] irq_exit_rcu+0x97/0xc0 [ 45.289374][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.289511][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.289685][ T411] default_idle+0xf/0x20 [ 45.289789][ T411] default_idle_call+0x6d/0xb0 [ 45.289926][ T411] cpuidle_idle_call+0x1f4/0x280 [ 45.290070][ T411] do_idle+0xf9/0x160 [ 45.290177][ T411] cpu_startup_entry+0x54/0x60 [ 45.290314][ T411] start_secondary+0x21c/0x2b0 [ 45.290450][ T411] common_startup_64+0x12c/0x138 [ 45.290588][ T411] [ 45.290588][ T411] to a SOFTIRQ-irq-unsafe lock: [ 45.290757][ T411] (&p->alloc_lock){+.+.}-{2:2} [ 45.290763][ T411] [ 45.290763][ T411] ... which became SOFTIRQ-irq-unsafe at: [ 45.291145][ T411] ... [ 45.291147][ T411] __lock_acquire+0x797/0x1570 [ 45.291360][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.291496][ T411] _raw_spin_lock+0x30/0x40 [ 45.291658][ T411] set_mems_allowed+0x1d/0x210 [ 45.291809][ T411] kernel_init_freeable+0x72/0x310 [ 45.291964][ T411] kernel_init+0x20/0x200 [ 45.292104][ T411] ret_from_fork+0x31/0x70 [ 45.292243][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.292394][ T411] [ 45.292394][ T411] other info that might help us debug this: [ 45.292394][ T411] [ 45.292669][ T411] Possible interrupt unsafe locking scenario: [ 45.292669][ T411] [ 45.292927][ T411] CPU0 CPU1 [ 45.293070][ T411] ---- ---- [ 45.293206][ T411] lock(&p->alloc_lock); [ 45.293316][ T411] local_irq_disable(); [ 45.293487][ T411] lock(&ndev->lock); [ 45.293664][ T411] lock(&p->alloc_lock); [ 45.293848][ T411] [ 45.293951][ T411] lock(&ndev->lock); [ 45.294061][ T411] [ 45.294061][ T411] *** DEADLOCK *** [ 45.294061][ T411] [ 45.294260][ T411] 3 locks held by sysctl/411: [ 45.294405][ T411] #0: ffff88800606c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 45.294660][ T411] #1: ffffffff8bd969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 45.294971][ T411] #2: ffff888005ba5580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.295253][ T411] [ 45.295253][ T411] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 45.295538][ T411] -> (&ndev->lock){++--}-{2:2} { [ 45.295698][ T411] HARDIRQ-ON-W at: [ 45.295820][ T411] __lock_acquire+0x797/0x1570 [ 45.296026][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.296216][ T411] _raw_write_lock_bh+0x38/0x50 [ 45.296417][ T411] addrconf_permanent_addr+0x6e/0x670 [ 45.296610][ T411] addrconf_notify+0x749/0xd60 [ 45.296826][ T411] notifier_call_chain+0xcd/0x150 [ 45.297025][ T411] __dev_notify_flags+0xe6/0x250 [ 45.297221][ T411] dev_change_flags+0xec/0x160 [ 45.297417][ T411] do_setlink+0x7d6/0x21e0 [ 45.297611][ T411] __rtnl_newlink+0xaa7/0xd80 [ 45.297803][ T411] rtnl_newlink+0x63/0xa0 [ 45.298001][ T411] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.298196][ T411] netlink_rcv_skb+0x130/0x360 [ 45.298389][ T411] netlink_unicast+0x449/0x710 [ 45.298586][ T411] netlink_sendmsg+0x723/0xbe0 [ 45.298774][ T411] ____sys_sendmsg+0x7b2/0xa10 [ 45.298997][ T411] ___sys_sendmsg+0xee/0x170 [ 45.299190][ T411] __sys_sendmsg+0xcd/0x170 [ 45.299393][ T411] do_syscall_64+0xc6/0x1e0 [ 45.299585][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.299829][ T411] HARDIRQ-ON-R at: [ 45.299956][ T411] __lock_acquire+0x797/0x1570 [ 45.300148][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.300349][ T411] _raw_read_lock_bh+0x44/0x80 [ 45.300544][ T411] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.300748][ T411] inet6_fill_link_af+0x5e/0xe0 [ 45.300952][ T411] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.301155][ T411] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.301352][ T411] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.301584][ T411] rtmsg_ifinfo+0x5b/0xa0 [ 45.301778][ T411] register_netdevice+0x1177/0x1690 [ 45.301971][ T411] register_netdev+0x20/0x40 [ 45.302168][ T411] sit_init_net+0x250/0x4f0 [ 45.302370][ T411] ops_init+0x9b/0x560 [ 45.302524][ T411] register_pernet_operations+0x2db/0x710 [ 45.302761][ T411] register_pernet_device+0x2a/0x60 [ 45.302996][ T411] sit_init+0x23/0xe0 [ 45.303155][ T411] do_one_initcall+0x8d/0x1e0 [ 45.303349][ T411] do_initcalls+0x1b2/0x3e0 [ 45.303546][ T411] kernel_init_freeable+0x232/0x310 [ 45.303747][ T411] kernel_init+0x20/0x200 [ 45.303942][ T411] ret_from_fork+0x31/0x70 [ 45.304149][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.304347][ T411] IN-SOFTIRQ-W at: [ 45.304462][ T411] __lock_acquire+0x797/0x1570 [ 45.304650][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.304865][ T411] _raw_write_lock+0x30/0x40 [ 45.305061][ T411] addrconf_rs_timer+0xa9/0x730 [ 45.305256][ T411] call_timer_fn+0x13b/0x230 [ 45.305448][ T411] __run_timers+0x545/0x810 [ 45.305628][ T411] timer_expire_remote+0x9b/0xe0 [ 45.305813][ T411] tmigr_handle_remote_cpu+0x270/0x430 [ 45.306030][ T411] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.306219][ T411] tmigr_handle_remote+0x21d/0x3a0 [ 45.306409][ T411] __do_softirq+0x1f8/0x5df [ 45.306601][ T411] irq_exit_rcu+0x97/0xc0 [ 45.306798][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.307053][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.307301][ T411] default_idle+0xf/0x20 [ 45.307492][ T411] default_idle_call+0x6d/0xb0 [ 45.307681][ T411] cpuidle_idle_call+0x1f4/0x280 [ 45.307874][ T411] do_idle+0xf9/0x160 [ 45.308027][ T411] cpu_startup_entry+0x54/0x60 [ 45.308219][ T411] start_secondary+0x21c/0x2b0 [ 45.308410][ T411] common_startup_64+0x12c/0x138 [ 45.308605][ T411] IN-SOFTIRQ-R at: [ 45.308722][ T411] __lock_acquire+0x797/0x1570 [ 45.308934][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.309125][ T411] _raw_read_lock_bh+0x44/0x80 [ 45.309411][ T411] ipv6_get_lladdr+0xa9/0x3e0 [ 45.309602][ T411] addrconf_rs_timer+0x24a/0x730 [ 45.309798][ T411] call_timer_fn+0x13b/0x230 [ 45.310080][ T411] __run_timers+0x545/0x810 [ 45.310271][ T411] timer_expire_remote+0x9b/0xe0 [ 45.310464][ T411] tmigr_handle_remote_cpu+0x270/0x430 [ 45.310660][ T411] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.310956][ T411] tmigr_handle_remote+0x21d/0x3a0 [ 45.311157][ T411] __do_softirq+0x1f8/0x5df [ 45.311350][ T411] irq_exit_rcu+0x97/0xc0 [ 45.311623][ T411] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.311859][ T411] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.312087][ T411] default_idle+0xf/0x20 [ 45.312440][ T411] default_idle_call+0x6d/0xb0 [ 45.312633][ T411] cpuidle_idle_call+0x1f4/0x280 [ 45.312852][ T411] do_idle+0xf9/0x160 [ 45.313006][ T411] cpu_startup_entry+0x54/0x60 [ 45.313279][ T411] start_secondary+0x21c/0x2b0 [ 45.313468][ T411] common_startup_64+0x12c/0x138 [ 45.313659][ T411] INITIAL USE at: [ 45.313782][ T411] __lock_acquire+0x797/0x1570 [ 45.314040][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.314226][ T411] _raw_write_lock_bh+0x38/0x50 [ 45.314399][ T411] addrconf_permanent_addr+0x6e/0x670 [ 45.314660][ T411] addrconf_notify+0x749/0xd60 [ 45.314836][ T411] notifier_call_chain+0xcd/0x150 [ 45.315039][ T411] __dev_notify_flags+0xe6/0x250 [ 45.315292][ T411] dev_change_flags+0xec/0x160 [ 45.315465][ T411] do_setlink+0x7d6/0x21e0 [ 45.315638][ T411] __rtnl_newlink+0xaa7/0xd80 [ 45.315807][ T411] rtnl_newlink+0x63/0xa0 [ 45.316057][ T411] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.316226][ T411] netlink_rcv_skb+0x130/0x360 [ 45.316395][ T411] netlink_unicast+0x449/0x710 [ 45.316651][ T411] netlink_sendmsg+0x723/0xbe0 [ 45.316847][ T411] ____sys_sendmsg+0x7b2/0xa10 [ 45.317020][ T411] ___sys_sendmsg+0xee/0x170 [ 45.317191][ T411] __sys_sendmsg+0xcd/0x170 [ 45.317441][ T411] do_syscall_64+0xc6/0x1e0 [ 45.317614][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.317817][ T411] INITIAL READ USE at: [ 45.318004][ T411] __lock_acquire+0x797/0x1570 [ 45.318174][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.318344][ T411] _raw_read_lock_bh+0x44/0x80 [ 45.318518][ T411] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.318806][ T411] inet6_fill_link_af+0x5e/0xe0 [ 45.319002][ T411] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.319177][ T411] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.319465][ T411] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.319670][ T411] rtmsg_ifinfo+0x5b/0xa0 [ 45.319838][ T411] register_netdevice+0x1177/0x1690 [ 45.320123][ T411] register_netdev+0x20/0x40 [ 45.320291][ T411] sit_init_net+0x250/0x4f0 [ 45.320464][ T411] ops_init+0x9b/0x560 [ 45.320731][ T411] register_pernet_operations+0x2db/0x710 [ 45.320953][ T411] register_pernet_device+0x2a/0x60 [ 45.321155][ T411] sit_init+0x23/0xe0 [ 45.321406][ T411] do_one_initcall+0x8d/0x1e0 [ 45.321578][ T411] do_initcalls+0x1b2/0x3e0 [ 45.321752][ T411] kernel_init_freeable+0x232/0x310 [ 45.322038][ T411] kernel_init+0x20/0x200 [ 45.322211][ T411] ret_from_fork+0x31/0x70 [ 45.322383][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.322554][ T411] } [ 45.322705][ T411] ... key at: [] __key.37+0x0/0x40 [ 45.322923][ T411] [ 45.322923][ T411] the dependencies between the lock to be acquired [ 45.322925][ T411] and SOFTIRQ-irq-unsafe lock: [ 45.323455][ T411] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.323600][ T411] HARDIRQ-ON-W at: [ 45.323718][ T411] __lock_acquire+0x797/0x1570 [ 45.323921][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.324172][ T411] _raw_spin_lock+0x30/0x40 [ 45.324344][ T411] set_mems_allowed+0x1d/0x210 [ 45.324514][ T411] kernel_init_freeable+0x72/0x310 [ 45.324686][ T411] kernel_init+0x20/0x200 [ 45.324983][ T411] ret_from_fork+0x31/0x70 [ 45.325188][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.325358][ T411] SOFTIRQ-ON-W at: [ 45.325554][ T411] __lock_acquire+0x797/0x1570 [ 45.325730][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.325900][ T411] _raw_spin_lock+0x30/0x40 [ 45.326069][ T411] set_mems_allowed+0x1d/0x210 [ 45.326320][ T411] kernel_init_freeable+0x72/0x310 [ 45.326489][ T411] kernel_init+0x20/0x200 [ 45.326662][ T411] ret_from_fork+0x31/0x70 [ 45.326914][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.327086][ T411] INITIAL USE at: [ 45.327188][ T411] __lock_acquire+0x797/0x1570 [ 45.327360][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.327627][ T411] _raw_spin_lock+0x30/0x40 [ 45.327817][ T411] set_mems_allowed+0x1d/0x210 [ 45.327987][ T411] kernel_init_freeable+0x72/0x310 [ 45.328243][ T411] kernel_init+0x20/0x200 [ 45.328413][ T411] ret_from_fork+0x31/0x70 [ 45.328591][ T411] ret_from_fork_asm+0x1a/0x30 [ 45.328803][ T411] } [ 45.328996][ T411] ... key at: [] __key.387+0x0/0x40 [ 45.329212][ T411] ... acquired at: [ 45.329313][ T411] check_prev_add+0x194/0xce0 [ 45.329459][ T411] validate_chain+0x71d/0x9b0 [ 45.329689][ T411] __lock_acquire+0xaf0/0x1570 [ 45.329846][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.329991][ T411] _raw_spin_lock+0x30/0x40 [ 45.330139][ T411] __get_task_comm+0x27/0x70 [ 45.330293][ T411] ref_tracker_alloc+0x2ee/0x490 [ 45.330526][ T411] netdev_get_by_index+0x5e/0x80 [ 45.330674][ T411] fib6_nh_init+0x3d8/0x15b0 [ 45.330826][ T411] ip6_route_info_create+0xf18/0x17d0 [ 45.330978][ T411] addrconf_f6i_alloc+0x265/0x560 [ 45.331209][ T411] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.331359][ T411] addrconf_join_anycast+0x1c0/0x220 [ 45.331507][ T411] dev_forward_change+0x2a6/0x7b0 [ 45.331657][ T411] addrconf_fixup_forwarding+0x23f/0x460 [ 45.331926][ T411] addrconf_sysctl_forward+0x212/0x2b0 [ 45.332075][ T411] proc_sys_call_handler+0x403/0x5e0 [ 45.332229][ T411] vfs_write+0x9e5/0x10a0 [ 45.332379][ T411] ksys_write+0xf5/0x1e0 [ 45.332609][ T411] do_syscall_64+0xc6/0x1e0 [ 45.332788][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.333049][ T411] [ 45.333155][ T411] [ 45.333155][ T411] stack backtrace: [ 45.333534][ T411] CPU: 1 PID: 411 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 45.333957][ T411] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.334311][ T411] Call Trace: [ 45.334502][ T411] [ 45.334574][ T411] dump_stack_lvl+0x82/0xd0 [ 45.334716][ T411] print_bad_irq_dependency+0x957/0xd40 [ 45.334879][ T411] ? hlock_class+0x4e/0x130 [ 45.335091][ T411] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 45.335616][ T411] ? __pfx_usage_skip+0x10/0x10 [ 45.335850][ T411] ? __bfs+0x246/0x650 [ 45.336036][ T411] ? __pfx_usage_match+0x10/0x10 [ 45.336268][ T411] check_irq_usage+0x596/0x850 [ 45.336646][ T411] ? __pfx_check_irq_usage+0x10/0x10 [ 45.336871][ T411] ? __bfs+0x246/0x650 [ 45.337046][ T411] ? __pfx_hlock_conflict+0x10/0x10 [ 45.337276][ T411] ? check_path.constprop.0+0x24/0x50 [ 45.337509][ T411] ? check_noncircular+0x14c/0x3e0 [ 45.337887][ T411] ? __pfx_check_noncircular+0x10/0x10 [ 45.338126][ T411] ? check_prev_add+0x194/0xce0 [ 45.338348][ T411] check_prev_add+0x194/0xce0 [ 45.338563][ T411] ? validate_chain+0x130/0x9b0 [ 45.338920][ T411] validate_chain+0x71d/0x9b0 [ 45.339135][ T411] ? mark_lock+0x38/0x3e0 [ 45.339302][ T411] ? __pfx_validate_chain+0x10/0x10 [ 45.339521][ T411] ? hlock_class+0x4e/0x130 [ 45.339877][ T411] ? mark_lock+0x38/0x3e0 [ 45.340050][ T411] __lock_acquire+0xaf0/0x1570 [ 45.340285][ T411] lock_acquire.part.0+0xeb/0x330 [ 45.340500][ T411] ? __get_task_comm+0x27/0x70 [ 45.340725][ T411] ? mark_lock+0x38/0x3e0 [ 45.341035][ T411] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.341259][ T411] ? trace_lock_acquire+0x135/0x1c0 [ 45.341484][ T411] ? __get_task_comm+0x27/0x70 [ 45.341706][ T411] ? lock_acquire+0x32/0xc0 [ 45.342069][ T411] ? __get_task_comm+0x27/0x70 [ 45.342308][ T411] _raw_spin_lock+0x30/0x40 [ 45.342546][ T411] ? __get_task_comm+0x27/0x70 [ 45.342778][ T411] __get_task_comm+0x27/0x70 [ 45.343004][ T411] ref_tracker_alloc+0x2ee/0x490 [ 45.343354][ T411] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 45.343560][ T411] ? dev_get_by_index+0x177/0x270 [ 45.343783][ T411] ? netdev_get_by_index+0x5e/0x80 [ 45.343999][ T411] ? fib6_nh_init+0x3d8/0x15b0 [ 45.344348][ T411] ? ip6_route_info_create+0xf18/0x17d0 [ 45.344559][ T411] ? addrconf_f6i_alloc+0x265/0x560 [ 45.344798][ T411] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.345020][ T411] ? addrconf_join_anycast+0x1c0/0x220 [ 45.345380][ T411] ? dev_forward_change+0x2a6/0x7b0 [ 45.345602][ T411] ? addrconf_fixup_forwarding+0x23f/0x460 [ 45.345878][ T411] ? addrconf_sysctl_forward+0x212/0x2b0 [ 45.346100][ T411] ? proc_sys_call_handler+0x403/0x5e0 [ 45.346474][ T411] ? vfs_write+0x9e5/0x10a0 [ 45.346706][ T411] ? ksys_write+0xf5/0x1e0 [ 45.346927][ T411] ? do_syscall_64+0xc6/0x1e0 [ 45.347168][ T411] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.347596][ T411] ? dev_get_by_index+0x177/0x270 [ 45.347828][ T411] netdev_get_by_index+0x5e/0x80 [ 45.348063][ T411] fib6_nh_init+0x3d8/0x15b0 [ 45.348290][ T411] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.348723][ T411] ? __pfx_fib6_nh_init+0x10/0x10 [ 45.348994][ T411] ? kasan_save_track+0x14/0x30 [ 45.349217][ T411] ? __kasan_kmalloc+0x7f/0x90 [ 45.349429][ T411] ? __kmalloc+0x1d7/0x3c0 [ 45.349787][ T411] ? fib6_get_table+0x116/0x290 [ 45.350007][ T411] ip6_route_info_create+0xf18/0x17d0 [ 45.350227][ T411] ? __lock_release+0x103/0x460 [ 45.350449][ T411] ? __pfx_ip6_route_info_create+0x10/0x10 [ 45.350856][ T411] ? addrconf_f6i_alloc+0x12d/0x560 [ 45.351083][ T411] addrconf_f6i_alloc+0x265/0x560 [ 45.351311][ T411] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 45.351549][ T411] ? do_raw_write_lock+0x122/0x3b0 [ 45.351785][ T411] ? __pfx_do_raw_write_lock+0x10/0x10 [ 45.352160][ T411] ? lock_acquire+0x32/0xc0 [ 45.352384][ T411] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.352604][ T411] addrconf_join_anycast+0x1c0/0x220 [ 45.352844][ T411] ? mark_lock+0x38/0x3e0 [ 45.353315][ T411] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 45.353595][ T411] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 45.354018][ T411] dev_forward_change+0x2a6/0x7b0 [ 45.354232][ T411] ? __pfx_dev_forward_change+0x10/0x10 [ 45.354611][ T411] addrconf_fixup_forwarding+0x23f/0x460 [ 45.354830][ T411] addrconf_sysctl_forward+0x212/0x2b0 [ 45.355050][ T411] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.355331][ T411] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.355748][ T411] ? trace_kmalloc+0x2a/0xe0 [ 45.355972][ T411] ? __kmalloc_node+0x220/0x400 [ 45.356187][ T411] ? proc_sys_call_handler+0x30b/0x5e0 [ 45.356413][ T411] proc_sys_call_handler+0x403/0x5e0 [ 45.356771][ T411] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 45.357045][ T411] ? __lock_acquire+0xaf0/0x1570 [ 45.357274][ T411] vfs_write+0x9e5/0x10a0 [ 45.357447][ T411] ? do_user_addr_fault+0x449/0xbe0 [ 45.357806][ T411] ? __pfx_vfs_write+0x10/0x10 [ 45.358023][ T411] ? find_held_lock+0x2c/0x110 [ 45.358248][ T411] ? __pfx___lock_release+0x10/0x10 [ 45.358459][ T411] ? __fget_light+0x53/0x1e0 [ 45.358820][ T411] ksys_write+0xf5/0x1e0 [ 45.358994][ T411] ? __pfx_ksys_write+0x10/0x10 [ 45.359216][ T411] ? do_user_addr_fault+0x4bd/0xbe0 [ 45.359435][ T411] do_syscall_64+0xc6/0x1e0 [ 45.359654][ T411] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.360059][ T411] RIP: 0033:0x7f180698c957 [ 45.360287][ T411] 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 [ 45.361231][ T411] RSP: 002b:00007ffcda0f6bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 45.361577][ T411] RAX: ffffffffffffffda RBX: 00005591bd752360 RCX: 00007f180698c957 [ 45.361899][ T411] RDX: 0000000000000002 RSI: 00005591bd7523a0 RDI: 0000000000000005 [ 45.362373][ T411] RBP: 00005591bd7544d0 R08: 0000000000000003 R09: 0000000000000077 [ 45.362710][ T411] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 45.363184][ T411] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f1806a439c0 [ 45.363515][ T411] WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr