[ 31.508010][ T311] gre: GRE over IPv4 demultiplexor driver [ 31.530089][ T311] ip_gre: GRE over IPv4 tunneling driver [ 33.777909][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 37.911269][ T371] GACT probability NOT on [ 41.639824][ T404] [ 41.639941][ T404] ===================================================== [ 41.640124][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 41.640335][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 41.640472][ T404] ----------------------------------------------------- [ 41.640648][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 41.640851][ T404] ffff888006b98968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 41.641119][ T404] [ 41.641119][ T404] and this task is already holding: [ 41.641335][ T404] ffff888005c15580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.641598][ T404] which would create a new lock dependency: [ 41.641770][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 41.642010][ T404] [ 41.642010][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 41.642251][ T404] (&ndev->lock){++--}-{2:2} [ 41.642255][ T404] [ 41.642255][ T404] ... which became SOFTIRQ-irq-safe at: [ 41.642603][ T404] __lock_acquire+0x797/0x1570 [ 41.642747][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.642888][ T404] _raw_write_lock+0x30/0x40 [ 41.643038][ T404] addrconf_rs_timer+0xa9/0x730 [ 41.643181][ T404] call_timer_fn+0x13b/0x230 [ 41.643321][ T404] __run_timers+0x545/0x810 [ 41.643457][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.643599][ T404] __do_softirq+0x1f8/0x5df [ 41.643739][ T404] irq_exit_rcu+0x97/0xc0 [ 41.643883][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.644031][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.644206][ T404] default_idle+0xf/0x20 [ 41.644315][ T404] default_idle_call+0x6d/0xb0 [ 41.644453][ T404] cpuidle_idle_call+0x1f4/0x280 [ 41.644594][ T404] do_idle+0xf9/0x160 [ 41.644698][ T404] cpu_startup_entry+0x54/0x60 [ 41.644834][ T404] rest_init+0x14f/0x260 [ 41.644943][ T404] start_kernel+0x318/0x3d0 [ 41.645120][ T404] x86_64_start_reservations+0x18/0x30 [ 41.645259][ T404] x86_64_start_kernel+0xba/0x110 [ 41.645394][ T404] common_startup_64+0x12c/0x138 [ 41.645534][ T404] [ 41.645534][ T404] to a SOFTIRQ-irq-unsafe lock: [ 41.645701][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 41.645706][ T404] [ 41.645706][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 41.646042][ T404] ... [ 41.646044][ T404] __lock_acquire+0x797/0x1570 [ 41.646255][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.646392][ T404] _raw_spin_lock+0x30/0x40 [ 41.646529][ T404] set_mems_allowed+0x1d/0x210 [ 41.646669][ T404] kernel_init_freeable+0x72/0x310 [ 41.646804][ T404] kernel_init+0x20/0x200 [ 41.646938][ T404] ret_from_fork+0x31/0x70 [ 41.647076][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.647212][ T404] [ 41.647212][ T404] other info that might help us debug this: [ 41.647212][ T404] [ 41.647477][ T404] Possible interrupt unsafe locking scenario: [ 41.647477][ T404] [ 41.647677][ T404] CPU0 CPU1 [ 41.647813][ T404] ---- ---- [ 41.647947][ T404] lock(&p->alloc_lock); [ 41.648049][ T404] local_irq_disable(); [ 41.648217][ T404] lock(&ndev->lock); [ 41.648392][ T404] lock(&p->alloc_lock); [ 41.648569][ T404] [ 41.648673][ T404] lock(&ndev->lock); [ 41.648779][ T404] [ 41.648779][ T404] *** DEADLOCK *** [ 41.648779][ T404] [ 41.648984][ T404] 3 locks held by sysctl/404: [ 41.649121][ T404] #0: ffff8880060e43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 41.649375][ T404] #1: ffffffffa29969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 41.649655][ T404] #2: ffff888005c15580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.649898][ T404] [ 41.649898][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 41.650165][ T404] -> (&ndev->lock){++--}-{2:2} { [ 41.650307][ T404] HARDIRQ-ON-W at: [ 41.650422][ T404] __lock_acquire+0x797/0x1570 [ 41.650602][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.650779][ T404] _raw_write_lock_bh+0x38/0x50 [ 41.650955][ T404] addrconf_permanent_addr+0x6e/0x670 [ 41.651128][ T404] addrconf_notify+0x749/0xd60 [ 41.651305][ T404] notifier_call_chain+0xcd/0x150 [ 41.651489][ T404] __dev_notify_flags+0xe6/0x250 [ 41.651670][ T404] dev_change_flags+0xec/0x160 [ 41.651862][ T404] do_setlink+0x7d6/0x21e0 [ 41.652046][ T404] __rtnl_newlink+0xaa7/0xd80 [ 41.652221][ T404] rtnl_newlink+0x63/0xa0 [ 41.652393][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.652563][ T404] netlink_rcv_skb+0x130/0x360 [ 41.652758][ T404] netlink_unicast+0x449/0x710 [ 41.652936][ T404] netlink_sendmsg+0x723/0xbe0 [ 41.653110][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 41.653293][ T404] ___sys_sendmsg+0xee/0x170 [ 41.653465][ T404] __sys_sendmsg+0xcd/0x170 [ 41.653638][ T404] do_syscall_64+0xc6/0x1e0 [ 41.653815][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.654028][ T404] HARDIRQ-ON-R at: [ 41.654133][ T404] __lock_acquire+0x797/0x1570 [ 41.654312][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.654487][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.654660][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.654834][ T404] inet6_fill_link_af+0x5e/0xe0 [ 41.655010][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.655183][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.655356][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.655566][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 41.655741][ T404] register_netdevice+0x1177/0x1690 [ 41.655914][ T404] register_netdev+0x20/0x40 [ 41.656086][ T404] sit_init_net+0x250/0x4f0 [ 41.656261][ T404] ops_init+0x9b/0x560 [ 41.656400][ T404] register_pernet_operations+0x2db/0x710 [ 41.656606][ T404] register_pernet_device+0x2a/0x60 [ 41.656780][ T404] sit_init+0x23/0xe0 [ 41.656921][ T404] do_one_initcall+0x8d/0x1e0 [ 41.657099][ T404] do_initcalls+0x1b2/0x3e0 [ 41.657278][ T404] kernel_init_freeable+0x232/0x310 [ 41.657452][ T404] kernel_init+0x20/0x200 [ 41.657627][ T404] ret_from_fork+0x31/0x70 [ 41.657801][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.657975][ T404] IN-SOFTIRQ-W at: [ 41.658079][ T404] __lock_acquire+0x797/0x1570 [ 41.658250][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.658430][ T404] _raw_write_lock+0x30/0x40 [ 41.658605][ T404] addrconf_rs_timer+0xa9/0x730 [ 41.658777][ T404] call_timer_fn+0x13b/0x230 [ 41.658956][ T404] __run_timers+0x545/0x810 [ 41.659131][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.659308][ T404] __do_softirq+0x1f8/0x5df [ 41.659482][ T404] irq_exit_rcu+0x97/0xc0 [ 41.659652][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.659859][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.660062][ T404] default_idle+0xf/0x20 [ 41.660231][ T404] default_idle_call+0x6d/0xb0 [ 41.660404][ T404] cpuidle_idle_call+0x1f4/0x280 [ 41.660581][ T404] do_idle+0xf9/0x160 [ 41.660719][ T404] cpu_startup_entry+0x54/0x60 [ 41.660891][ T404] rest_init+0x14f/0x260 [ 41.661067][ T404] start_kernel+0x318/0x3d0 [ 41.661238][ T404] x86_64_start_reservations+0x18/0x30 [ 41.661410][ T404] x86_64_start_kernel+0xba/0x110 [ 41.661669][ T404] common_startup_64+0x12c/0x138 [ 41.661861][ T404] IN-SOFTIRQ-R at: [ 41.661966][ T404] __lock_acquire+0x797/0x1570 [ 41.662137][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.662392][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.662564][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 41.662735][ T404] addrconf_rs_timer+0x24a/0x730 [ 41.662992][ T404] call_timer_fn+0x13b/0x230 [ 41.663165][ T404] __run_timers+0x545/0x810 [ 41.663341][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.663514][ T404] __do_softirq+0x1f8/0x5df [ 41.663766][ T404] irq_exit_rcu+0x97/0xc0 [ 41.663935][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.664140][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.664433][ T404] default_idle+0xf/0x20 [ 41.664604][ T404] default_idle_call+0x6d/0xb0 [ 41.664780][ T404] cpuidle_idle_call+0x1f4/0x280 [ 41.665044][ T404] do_idle+0xf9/0x160 [ 41.665181][ T404] cpu_startup_entry+0x54/0x60 [ 41.665356][ T404] rest_init+0x14f/0x260 [ 41.665535][ T404] start_kernel+0x318/0x3d0 [ 41.665710][ T404] x86_64_start_reservations+0x18/0x30 [ 41.665884][ T404] x86_64_start_kernel+0xba/0x110 [ 41.666057][ T404] common_startup_64+0x12c/0x138 [ 41.666310][ T404] INITIAL USE at: [ 41.666413][ T404] __lock_acquire+0x797/0x1570 [ 41.666587][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.666763][ T404] _raw_write_lock_bh+0x38/0x50 [ 41.667019][ T404] addrconf_permanent_addr+0x6e/0x670 [ 41.667189][ T404] addrconf_notify+0x749/0xd60 [ 41.667358][ T404] notifier_call_chain+0xcd/0x150 [ 41.667530][ T404] __dev_notify_flags+0xe6/0x250 [ 41.667702][ T404] dev_change_flags+0xec/0x160 [ 41.667880][ T404] do_setlink+0x7d6/0x21e0 [ 41.668057][ T404] __rtnl_newlink+0xaa7/0xd80 [ 41.668316][ T404] rtnl_newlink+0x63/0xa0 [ 41.668490][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.668663][ T404] netlink_rcv_skb+0x130/0x360 [ 41.668921][ T404] netlink_unicast+0x449/0x710 [ 41.669099][ T404] netlink_sendmsg+0x723/0xbe0 [ 41.669272][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 41.669448][ T404] ___sys_sendmsg+0xee/0x170 [ 41.669702][ T404] __sys_sendmsg+0xcd/0x170 [ 41.669875][ T404] do_syscall_64+0xc6/0x1e0 [ 41.670050][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.670342][ T404] INITIAL READ USE at: [ 41.670449][ T404] __lock_acquire+0x797/0x1570 [ 41.670624][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.670803][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.671073][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.671280][ T404] inet6_fill_link_af+0x5e/0xe0 [ 41.671451][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.671628][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.671838][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.672046][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 41.672299][ T404] register_netdevice+0x1177/0x1690 [ 41.672506][ T404] register_netdev+0x20/0x40 [ 41.672679][ T404] sit_init_net+0x250/0x4f0 [ 41.672943][ T404] ops_init+0x9b/0x560 [ 41.673116][ T404] register_pernet_operations+0x2db/0x710 [ 41.673322][ T404] register_pernet_device+0x2a/0x60 [ 41.673530][ T404] sit_init+0x23/0xe0 [ 41.673704][ T404] do_one_initcall+0x8d/0x1e0 [ 41.673883][ T404] do_initcalls+0x1b2/0x3e0 [ 41.674143][ T404] kernel_init_freeable+0x232/0x310 [ 41.674351][ T404] kernel_init+0x20/0x200 [ 41.674523][ T404] ret_from_fork+0x31/0x70 [ 41.674696][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.674951][ T404] } [ 41.675024][ T404] ... key at: [] __key.37+0x0/0x40 [ 41.675242][ T404] [ 41.675242][ T404] the dependencies between the lock to be acquired [ 41.675243][ T404] and SOFTIRQ-irq-unsafe lock: [ 41.675691][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 41.675836][ T404] HARDIRQ-ON-W at: [ 41.675942][ T404] __lock_acquire+0x797/0x1570 [ 41.676199][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.676372][ T404] _raw_spin_lock+0x30/0x40 [ 41.676552][ T404] set_mems_allowed+0x1d/0x210 [ 41.676725][ T404] kernel_init_freeable+0x72/0x310 [ 41.676983][ T404] kernel_init+0x20/0x200 [ 41.677156][ T404] ret_from_fork+0x31/0x70 [ 41.677328][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.677582][ T404] SOFTIRQ-ON-W at: [ 41.677685][ T404] __lock_acquire+0x797/0x1570 [ 41.677862][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.678031][ T404] _raw_spin_lock+0x30/0x40 [ 41.678287][ T404] set_mems_allowed+0x1d/0x210 [ 41.678459][ T404] kernel_init_freeable+0x72/0x310 [ 41.678630][ T404] kernel_init+0x20/0x200 [ 41.678882][ T404] ret_from_fork+0x31/0x70 [ 41.679057][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.679234][ T404] INITIAL USE at: [ 41.679336][ T404] __lock_acquire+0x797/0x1570 [ 41.679513][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.679687][ T404] _raw_spin_lock+0x30/0x40 [ 41.679869][ T404] set_mems_allowed+0x1d/0x210 [ 41.680204][ T404] kernel_init_freeable+0x72/0x310 [ 41.680383][ T404] kernel_init+0x20/0x200 [ 41.680558][ T404] ret_from_fork+0x31/0x70 [ 41.680735][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.681005][ T404] } [ 41.681078][ T404] ... key at: [] __key.387+0x0/0x40 [ 41.681287][ T404] ... acquired at: [ 41.681394][ T404] check_prev_add+0x194/0xce0 [ 41.681537][ T404] validate_chain+0x71d/0x9b0 [ 41.681682][ T404] __lock_acquire+0xaf0/0x1570 [ 41.681831][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.681980][ T404] _raw_spin_lock+0x30/0x40 [ 41.682206][ T404] __get_task_comm+0x27/0x70 [ 41.682348][ T404] ref_tracker_alloc+0x2ee/0x490 [ 41.682492][ T404] netdev_get_by_index+0x5e/0x80 [ 41.682628][ T404] fib6_nh_init+0x3d8/0x15b0 [ 41.682765][ T404] ip6_route_info_create+0xf18/0x17d0 [ 41.682989][ T404] addrconf_f6i_alloc+0x265/0x560 [ 41.683125][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.683263][ T404] addrconf_join_anycast+0x1c0/0x220 [ 41.683398][ T404] dev_forward_change+0x2a6/0x7b0 [ 41.683544][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 41.683711][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 41.683847][ T404] proc_sys_call_handler+0x403/0x5e0 [ 41.683988][ T404] vfs_write+0x9e5/0x10a0 [ 41.684204][ T404] ksys_write+0xf5/0x1e0 [ 41.684338][ T404] do_syscall_64+0xc6/0x1e0 [ 41.684481][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.684650][ T404] [ 41.684799][ T404] [ 41.684799][ T404] stack backtrace: [ 41.684966][ T404] CPU: 1 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 41.685173][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.685557][ T404] Call Trace: [ 41.685660][ T404] [ 41.685731][ T404] dump_stack_lvl+0x82/0xd0 [ 41.685870][ T404] print_bad_irq_dependency+0x957/0xd40 [ 41.686007][ T404] ? hlock_class+0x4e/0x130 [ 41.686225][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 41.686395][ T404] ? __pfx_usage_skip+0x10/0x10 [ 41.686529][ T404] ? __bfs+0x246/0x650 [ 41.686635][ T404] ? __pfx_usage_match+0x10/0x10 [ 41.686851][ T404] check_irq_usage+0x596/0x850 [ 41.686990][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 41.687126][ T404] ? __bfs+0x246/0x650 [ 41.687232][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 41.687451][ T404] ? check_path.constprop.0+0x24/0x50 [ 41.687585][ T404] ? check_noncircular+0x14c/0x3e0 [ 41.687721][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 41.687862][ T404] ? check_prev_add+0x194/0xce0 [ 41.688001][ T404] check_prev_add+0x194/0xce0 [ 41.688218][ T404] ? validate_chain+0x130/0x9b0 [ 41.688357][ T404] validate_chain+0x71d/0x9b0 [ 41.688493][ T404] ? mark_lock+0x38/0x3e0 [ 41.688595][ T404] ? __pfx_validate_chain+0x10/0x10 [ 41.688808][ T404] ? hlock_class+0x4e/0x130 [ 41.688943][ T404] ? mark_lock+0x38/0x3e0 [ 41.689047][ T404] __lock_acquire+0xaf0/0x1570 [ 41.689190][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.689328][ T404] ? __get_task_comm+0x27/0x70 [ 41.689541][ T404] ? mark_lock+0x38/0x3e0 [ 41.689644][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.689779][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 41.689913][ T404] ? __get_task_comm+0x27/0x70 [ 41.690125][ T404] ? lock_acquire+0x32/0xc0 [ 41.690262][ T404] ? __get_task_comm+0x27/0x70 [ 41.690401][ T404] _raw_spin_lock+0x30/0x40 [ 41.690541][ T404] ? __get_task_comm+0x27/0x70 [ 41.690834][ T404] __get_task_comm+0x27/0x70 [ 41.690968][ T404] ref_tracker_alloc+0x2ee/0x490 [ 41.691104][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 41.691241][ T404] ? dev_get_by_index+0x177/0x270 [ 41.691376][ T404] ? netdev_get_by_index+0x5e/0x80 [ 41.691590][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 41.691727][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 41.691877][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 41.692013][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.692228][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 41.692366][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 41.692499][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 41.692666][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 41.692881][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 41.693020][ T404] ? vfs_write+0x9e5/0x10a0 [ 41.693154][ T404] ? ksys_write+0xf5/0x1e0 [ 41.693292][ T404] ? do_syscall_64+0xc6/0x1e0 [ 41.693508][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.693674][ T404] ? dev_get_by_index+0x177/0x270 [ 41.693810][ T404] netdev_get_by_index+0x5e/0x80 [ 41.693944][ T404] fib6_nh_init+0x3d8/0x15b0 [ 41.694159][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 41.694335][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 41.694474][ T404] ? kasan_save_track+0x14/0x30 [ 41.694611][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 41.694826][ T404] ? __kmalloc+0x1d7/0x3c0 [ 41.694962][ T404] ? fib6_get_table+0x116/0x290 [ 41.695097][ T404] ip6_route_info_create+0xf18/0x17d0 [ 41.695234][ T404] ? __lock_release+0x103/0x460 [ 41.695451][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 41.695619][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 41.695762][ T404] addrconf_f6i_alloc+0x265/0x560 [ 41.695897][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 41.696116][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 41.696253][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 41.696387][ T404] ? lock_acquire+0x32/0xc0 [ 41.696529][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.696666][ T404] addrconf_join_anycast+0x1c0/0x220 [ 41.696886][ T404] ? mark_lock+0x38/0x3e0 [ 41.696989][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 41.697161][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 41.697331][ T404] dev_forward_change+0x2a6/0x7b0 [ 41.697548][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 41.697686][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 41.697822][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 41.697957][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.698212][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.698380][ T404] ? trace_kmalloc+0x2a/0xe0 [ 41.698518][ T404] ? __kmalloc_node+0x220/0x400 [ 41.698654][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 41.698869][ T404] proc_sys_call_handler+0x403/0x5e0 [ 41.699005][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 41.699176][ T404] ? __lock_acquire+0xaf0/0x1570 [ 41.699318][ T404] vfs_write+0x9e5/0x10a0 [ 41.699505][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 41.699642][ T404] ? __pfx_vfs_write+0x10/0x10 [ 41.699777][ T404] ? find_held_lock+0x2c/0x110 [ 41.699913][ T404] ? __pfx___lock_release+0x10/0x10 [ 41.700132][ T404] ? __fget_light+0x53/0x1e0 [ 41.700270][ T404] ksys_write+0xf5/0x1e0 [ 41.700372][ T404] ? __pfx_ksys_write+0x10/0x10 [ 41.700506][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 41.700647][ T404] do_syscall_64+0xc6/0x1e0 [ 41.700870][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.701039][ T404] RIP: 0033:0x7faff1ce0957 [ 41.701181][ T404] 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 [ 41.701840][ T404] RSP: 002b:00007ffe0e877f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 41.702058][ T404] RAX: ffffffffffffffda RBX: 000055b1c50d6360 RCX: 00007faff1ce0957 [ 41.702343][ T404] RDX: 0000000000000002 RSI: 000055b1c50d63a0 RDI: 0000000000000005 [ 41.702548][ T404] RBP: 000055b1c50d84d0 R08: 0000000000000003 R09: 0000000000000077 [ 41.702750][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 41.703054][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007faff1d979c0 [ 41.703262][ T404]