[ 48.739594][ T465] [ 48.739731][ T465] ===================================================== [ 48.739945][ T465] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 48.740162][ T465] 6.9.0-rc1-virtme #1 Not tainted [ 48.740306][ T465] ----------------------------------------------------- [ 48.740481][ T465] sysctl/465 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 48.740712][ T465] ffff888006708968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 48.740985][ T465] [ 48.740985][ T465] and this task is already holding: [ 48.741207][ T465] ffff88800451d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 48.741477][ T465] which would create a new lock dependency: [ 48.741669][ T465] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 48.741883][ T465] [ 48.741883][ T465] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 48.742135][ T465] (&ndev->lock){++--}-{2:2} [ 48.742139][ T465] [ 48.742139][ T465] ... which became SOFTIRQ-irq-safe at: [ 48.742487][ T465] __lock_acquire+0x797/0x1570 [ 48.742652][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.742790][ T465] _raw_write_lock+0x30/0x40 [ 48.742931][ T465] addrconf_rs_timer+0xa9/0x730 [ 48.743068][ T465] call_timer_fn+0x13b/0x230 [ 48.743210][ T465] __run_timers+0x545/0x810 [ 48.743347][ T465] timer_expire_remote+0x9b/0xe0 [ 48.743482][ T465] tmigr_handle_remote_cpu+0x270/0x430 [ 48.743640][ T465] tmigr_handle_remote_up+0x19f/0x2e0 [ 48.743790][ T465] tmigr_handle_remote+0x21d/0x3a0 [ 48.743938][ T465] __do_softirq+0x1f8/0x5df [ 48.744075][ T465] irq_exit_rcu+0x97/0xc0 [ 48.744237][ T465] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.744373][ T465] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.744583][ T465] default_idle+0xf/0x20 [ 48.744691][ T465] default_idle_call+0x6d/0xb0 [ 48.744841][ T465] cpuidle_idle_call+0x1f4/0x280 [ 48.745012][ T465] do_idle+0xf9/0x160 [ 48.745124][ T465] cpu_startup_entry+0x54/0x60 [ 48.745268][ T465] start_secondary+0x21c/0x2b0 [ 48.745429][ T465] common_startup_64+0x12c/0x138 [ 48.745569][ T465] [ 48.745569][ T465] to a SOFTIRQ-irq-unsafe lock: [ 48.745767][ T465] (&p->alloc_lock){+.+.}-{2:2} [ 48.745772][ T465] [ 48.745772][ T465] ... which became SOFTIRQ-irq-unsafe at: [ 48.746137][ T465] ... [ 48.746138][ T465] __lock_acquire+0x797/0x1570 [ 48.746371][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.746521][ T465] _raw_spin_lock+0x30/0x40 [ 48.746666][ T465] set_mems_allowed+0x1d/0x210 [ 48.746806][ T465] kernel_init_freeable+0x72/0x310 [ 48.746947][ T465] kernel_init+0x20/0x200 [ 48.747118][ T465] ret_from_fork+0x31/0x70 [ 48.747268][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.747407][ T465] [ 48.747407][ T465] other info that might help us debug this: [ 48.747407][ T465] [ 48.747680][ T465] Possible interrupt unsafe locking scenario: [ 48.747680][ T465] [ 48.747898][ T465] CPU0 CPU1 [ 48.748035][ T465] ---- ---- [ 48.748190][ T465] lock(&p->alloc_lock); [ 48.748300][ T465] local_irq_disable(); [ 48.748481][ T465] lock(&ndev->lock); [ 48.748660][ T465] lock(&p->alloc_lock); [ 48.748846][ T465] [ 48.748959][ T465] lock(&ndev->lock); [ 48.749065][ T465] [ 48.749065][ T465] *** DEADLOCK *** [ 48.749065][ T465] [ 48.749279][ T465] 3 locks held by sysctl/465: [ 48.749415][ T465] #0: ffff8880060643f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 48.749682][ T465] #1: ffffffffaad969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 48.749986][ T465] #2: ffff88800451d580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 48.750270][ T465] [ 48.750270][ T465] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 48.750554][ T465] -> (&ndev->lock){++--}-{2:2} { [ 48.750711][ T465] HARDIRQ-ON-W at: [ 48.750827][ T465] __lock_acquire+0x797/0x1570 [ 48.751026][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.751196][ T465] _raw_write_lock_bh+0x38/0x50 [ 48.751374][ T465] addrconf_permanent_addr+0x6e/0x670 [ 48.751547][ T465] addrconf_notify+0x749/0xd60 [ 48.751723][ T465] notifier_call_chain+0xcd/0x150 [ 48.751897][ T465] __dev_notify_flags+0xe6/0x250 [ 48.752078][ T465] dev_change_flags+0xec/0x160 [ 48.752249][ T465] do_setlink+0x7d6/0x21e0 [ 48.752431][ T465] __rtnl_newlink+0xaa7/0xd80 [ 48.752609][ T465] rtnl_newlink+0x63/0xa0 [ 48.752805][ T465] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.752995][ T465] netlink_rcv_skb+0x130/0x360 [ 48.753173][ T465] netlink_unicast+0x449/0x710 [ 48.753361][ T465] netlink_sendmsg+0x723/0xbe0 [ 48.753557][ T465] ____sys_sendmsg+0x7b2/0xa10 [ 48.753738][ T465] ___sys_sendmsg+0xee/0x170 [ 48.753919][ T465] __sys_sendmsg+0xcd/0x170 [ 48.754096][ T465] do_syscall_64+0xc6/0x1e0 [ 48.754287][ T465] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.754535][ T465] HARDIRQ-ON-R at: [ 48.754638][ T465] __lock_acquire+0x797/0x1570 [ 48.754860][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.755053][ T465] _raw_read_lock_bh+0x44/0x80 [ 48.755245][ T465] inet6_fill_ifla6_attrs+0x516/0x740 [ 48.755445][ T465] inet6_fill_link_af+0x5e/0xe0 [ 48.755643][ T465] rtnl_fill_ifinfo+0x1612/0x29e0 [ 48.755844][ T465] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 48.756030][ T465] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 48.756244][ T465] rtmsg_ifinfo+0x5b/0xa0 [ 48.756418][ T465] register_netdevice+0x1177/0x1690 [ 48.756702][ T465] register_netdev+0x20/0x40 [ 48.756909][ T465] sit_init_net+0x250/0x4f0 [ 48.757086][ T465] ops_init+0x9b/0x560 [ 48.757341][ T465] register_pernet_operations+0x2db/0x710 [ 48.757549][ T465] register_pernet_device+0x2a/0x60 [ 48.757740][ T465] sit_init+0x23/0xe0 [ 48.757899][ T465] do_one_initcall+0x8d/0x1e0 [ 48.758175][ T465] do_initcalls+0x1b2/0x3e0 [ 48.758368][ T465] kernel_init_freeable+0x232/0x310 [ 48.758558][ T465] kernel_init+0x20/0x200 [ 48.758837][ T465] ret_from_fork+0x31/0x70 [ 48.759026][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.759211][ T465] IN-SOFTIRQ-W at: [ 48.759321][ T465] __lock_acquire+0x797/0x1570 [ 48.759494][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.759688][ T465] _raw_write_lock+0x30/0x40 [ 48.759861][ T465] addrconf_rs_timer+0xa9/0x730 [ 48.760132][ T465] call_timer_fn+0x13b/0x230 [ 48.760327][ T465] __run_timers+0x545/0x810 [ 48.760500][ T465] timer_expire_remote+0x9b/0xe0 [ 48.760745][ T465] tmigr_handle_remote_cpu+0x270/0x430 [ 48.761030][ T465] tmigr_handle_remote_up+0x19f/0x2e0 [ 48.761207][ T465] tmigr_handle_remote+0x21d/0x3a0 [ 48.761382][ T465] __do_softirq+0x1f8/0x5df [ 48.761650][ T465] irq_exit_rcu+0x97/0xc0 [ 48.761838][ T465] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.762044][ T465] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.762356][ T465] default_idle+0xf/0x20 [ 48.762548][ T465] default_idle_call+0x6d/0xb0 [ 48.762718][ T465] cpuidle_idle_call+0x1f4/0x280 [ 48.762912][ T465] do_idle+0xf9/0x160 [ 48.763136][ T465] cpu_startup_entry+0x54/0x60 [ 48.763329][ T465] start_secondary+0x21c/0x2b0 [ 48.763528][ T465] common_startup_64+0x12c/0x138 [ 48.763836][ T465] IN-SOFTIRQ-R at: [ 48.763939][ T465] __lock_acquire+0x797/0x1570 [ 48.764126][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.764313][ T465] _raw_read_lock_bh+0x44/0x80 [ 48.764504][ T465] ipv6_get_lladdr+0xa9/0x3e0 [ 48.764691][ T465] addrconf_rs_timer+0x24a/0x730 [ 48.764880][ T465] call_timer_fn+0x13b/0x230 [ 48.765074][ T465] __run_timers+0x545/0x810 [ 48.765259][ T465] timer_expire_remote+0x9b/0xe0 [ 48.765449][ T465] tmigr_handle_remote_cpu+0x270/0x430 [ 48.765636][ T465] tmigr_handle_remote_up+0x19f/0x2e0 [ 48.765892][ T465] tmigr_handle_remote+0x21d/0x3a0 [ 48.766067][ T465] __do_softirq+0x1f8/0x5df [ 48.766253][ T465] irq_exit_rcu+0x97/0xc0 [ 48.766425][ T465] sysvec_apic_timer_interrupt+0x75/0x80 [ 48.766643][ T465] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 48.766845][ T465] default_idle+0xf/0x20 [ 48.767041][ T465] default_idle_call+0x6d/0xb0 [ 48.767219][ T465] cpuidle_idle_call+0x1f4/0x280 [ 48.767407][ T465] do_idle+0xf9/0x160 [ 48.767581][ T465] cpu_startup_entry+0x54/0x60 [ 48.767886][ T465] start_secondary+0x21c/0x2b0 [ 48.768055][ T465] common_startup_64+0x12c/0x138 [ 48.768245][ T465] INITIAL USE at: [ 48.768352][ T465] __lock_acquire+0x797/0x1570 [ 48.768553][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.768724][ T465] _raw_write_lock_bh+0x38/0x50 [ 48.768904][ T465] addrconf_permanent_addr+0x6e/0x670 [ 48.769091][ T465] addrconf_notify+0x749/0xd60 [ 48.769264][ T465] notifier_call_chain+0xcd/0x150 [ 48.769453][ T465] __dev_notify_flags+0xe6/0x250 [ 48.769733][ T465] dev_change_flags+0xec/0x160 [ 48.769911][ T465] do_setlink+0x7d6/0x21e0 [ 48.770089][ T465] __rtnl_newlink+0xaa7/0xd80 [ 48.770278][ T465] rtnl_newlink+0x63/0xa0 [ 48.770448][ T465] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 48.770637][ T465] netlink_rcv_skb+0x130/0x360 [ 48.770828][ T465] netlink_unicast+0x449/0x710 [ 48.771101][ T465] netlink_sendmsg+0x723/0xbe0 [ 48.771276][ T465] ____sys_sendmsg+0x7b2/0xa10 [ 48.771454][ T465] ___sys_sendmsg+0xee/0x170 [ 48.771625][ T465] __sys_sendmsg+0xcd/0x170 [ 48.771906][ T465] do_syscall_64+0xc6/0x1e0 [ 48.772092][ T465] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.772310][ T465] INITIAL READ USE at: [ 48.772417][ T465] __lock_acquire+0x797/0x1570 [ 48.772586][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.772755][ T465] _raw_read_lock_bh+0x44/0x80 [ 48.772925][ T465] inet6_fill_ifla6_attrs+0x516/0x740 [ 48.773129][ T465] inet6_fill_link_af+0x5e/0xe0 [ 48.773297][ T465] rtnl_fill_ifinfo+0x1612/0x29e0 [ 48.773472][ T465] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 48.773756][ T465] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 48.773958][ T465] rtmsg_ifinfo+0x5b/0xa0 [ 48.774135][ T465] register_netdevice+0x1177/0x1690 [ 48.774420][ T465] register_netdev+0x20/0x40 [ 48.774589][ T465] sit_init_net+0x250/0x4f0 [ 48.774762][ T465] ops_init+0x9b/0x560 [ 48.775012][ T465] register_pernet_operations+0x2db/0x710 [ 48.775216][ T465] register_pernet_device+0x2a/0x60 [ 48.775418][ T465] sit_init+0x23/0xe0 [ 48.775668][ T465] do_one_initcall+0x8d/0x1e0 [ 48.775838][ T465] do_initcalls+0x1b2/0x3e0 [ 48.776016][ T465] kernel_init_freeable+0x232/0x310 [ 48.776303][ T465] kernel_init+0x20/0x200 [ 48.776473][ T465] ret_from_fork+0x31/0x70 [ 48.776670][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.776846][ T465] } [ 48.776999][ T465] ... key at: [] __key.37+0x0/0x40 [ 48.777213][ T465] [ 48.777213][ T465] the dependencies between the lock to be acquired [ 48.777215][ T465] and SOFTIRQ-irq-unsafe lock: [ 48.777651][ T465] -> (&p->alloc_lock){+.+.}-{2:2} { [ 48.777813][ T465] HARDIRQ-ON-W at: [ 48.777922][ T465] __lock_acquire+0x797/0x1570 [ 48.778100][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.778367][ T465] _raw_spin_lock+0x30/0x40 [ 48.778575][ T465] set_mems_allowed+0x1d/0x210 [ 48.778764][ T465] kernel_init_freeable+0x72/0x310 [ 48.778934][ T465] kernel_init+0x20/0x200 [ 48.779241][ T465] ret_from_fork+0x31/0x70 [ 48.779445][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.779623][ T465] SOFTIRQ-ON-W at: [ 48.779826][ T465] __lock_acquire+0x797/0x1570 [ 48.780032][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.780239][ T465] _raw_spin_lock+0x30/0x40 [ 48.780408][ T465] set_mems_allowed+0x1d/0x210 [ 48.780682][ T465] kernel_init_freeable+0x72/0x310 [ 48.780876][ T465] kernel_init+0x20/0x200 [ 48.781063][ T465] ret_from_fork+0x31/0x70 [ 48.781436][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.781624][ T465] INITIAL USE at: [ 48.781726][ T465] __lock_acquire+0x797/0x1570 [ 48.781895][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.782169][ T465] _raw_spin_lock+0x30/0x40 [ 48.782376][ T465] set_mems_allowed+0x1d/0x210 [ 48.782593][ T465] kernel_init_freeable+0x72/0x310 [ 48.782909][ T465] kernel_init+0x20/0x200 [ 48.783105][ T465] ret_from_fork+0x31/0x70 [ 48.783310][ T465] ret_from_fork_asm+0x1a/0x30 [ 48.783518][ T465] } [ 48.783679][ T465] ... key at: [] __key.387+0x0/0x40 [ 48.783932][ T465] ... acquired at: [ 48.784063][ T465] check_prev_add+0x194/0xce0 [ 48.784214][ T465] validate_chain+0x71d/0x9b0 [ 48.784465][ T465] __lock_acquire+0xaf0/0x1570 [ 48.784620][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.784797][ T465] _raw_spin_lock+0x30/0x40 [ 48.784952][ T465] __get_task_comm+0x27/0x70 [ 48.785110][ T465] ref_tracker_alloc+0x2ee/0x490 [ 48.785360][ T465] netdev_get_by_index+0x5e/0x80 [ 48.785527][ T465] fib6_nh_init+0x3d8/0x15b0 [ 48.785677][ T465] ip6_route_info_create+0xf18/0x17d0 [ 48.785866][ T465] addrconf_f6i_alloc+0x265/0x560 [ 48.786140][ T465] __ipv6_dev_ac_inc+0x25f/0xb10 [ 48.786278][ T465] addrconf_join_anycast+0x1c0/0x220 [ 48.786436][ T465] dev_forward_change+0x2a6/0x7b0 [ 48.786572][ T465] addrconf_fixup_forwarding+0x23f/0x460 [ 48.786867][ T465] addrconf_sysctl_forward+0x212/0x2b0 [ 48.787034][ T465] proc_sys_call_handler+0x403/0x5e0 [ 48.787191][ T465] vfs_write+0x9e5/0x10a0 [ 48.787336][ T465] ksys_write+0xf5/0x1e0 [ 48.787471][ T465] do_syscall_64+0xc6/0x1e0 [ 48.787628][ T465] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.787797][ T465] [ 48.787877][ T465] [ 48.787877][ T465] stack backtrace: [ 48.788053][ T465] CPU: 1 PID: 465 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 48.788264][ T465] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 48.788584][ T465] Call Trace: [ 48.788804][ T465] [ 48.788887][ T465] dump_stack_lvl+0x82/0xd0 [ 48.789039][ T465] print_bad_irq_dependency+0x957/0xd40 [ 48.789175][ T465] ? hlock_class+0x4e/0x130 [ 48.789324][ T465] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 48.789512][ T465] ? __pfx_usage_skip+0x10/0x10 [ 48.789646][ T465] ? __bfs+0x246/0x650 [ 48.789755][ T465] ? __pfx_usage_match+0x10/0x10 [ 48.789893][ T465] check_irq_usage+0x596/0x850 [ 48.790031][ T465] ? __pfx_check_irq_usage+0x10/0x10 [ 48.790165][ T465] ? __bfs+0x246/0x650 [ 48.790266][ T465] ? __pfx_hlock_conflict+0x10/0x10 [ 48.790415][ T465] ? check_path.constprop.0+0x24/0x50 [ 48.790554][ T465] ? check_noncircular+0x14c/0x3e0 [ 48.790792][ T465] ? __pfx_check_noncircular+0x10/0x10 [ 48.790937][ T465] ? check_prev_add+0x194/0xce0 [ 48.791101][ T465] check_prev_add+0x194/0xce0 [ 48.791237][ T465] ? validate_chain+0x130/0x9b0 [ 48.791476][ T465] validate_chain+0x71d/0x9b0 [ 48.791612][ T465] ? mark_lock+0x38/0x3e0 [ 48.791728][ T465] ? __pfx_validate_chain+0x10/0x10 [ 48.791864][ T465] ? hlock_class+0x4e/0x130 [ 48.792097][ T465] ? mark_lock+0x38/0x3e0 [ 48.792206][ T465] __lock_acquire+0xaf0/0x1570 [ 48.792369][ T465] lock_acquire.part.0+0xeb/0x330 [ 48.792511][ T465] ? __get_task_comm+0x27/0x70 [ 48.792651][ T465] ? mark_lock+0x38/0x3e0 [ 48.792946][ T465] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 48.793085][ T465] ? trace_lock_acquire+0x135/0x1c0 [ 48.793220][ T465] ? __get_task_comm+0x27/0x70 [ 48.793384][ T465] ? lock_acquire+0x32/0xc0 [ 48.793631][ T465] ? __get_task_comm+0x27/0x70 [ 48.793775][ T465] _raw_spin_lock+0x30/0x40 [ 48.793936][ T465] ? __get_task_comm+0x27/0x70 [ 48.794088][ T465] __get_task_comm+0x27/0x70 [ 48.794254][ T465] ref_tracker_alloc+0x2ee/0x490 [ 48.794493][ T465] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 48.794646][ T465] ? dev_get_by_index+0x177/0x270 [ 48.794796][ T465] ? netdev_get_by_index+0x5e/0x80 [ 48.794948][ T465] ? fib6_nh_init+0x3d8/0x15b0 [ 48.795193][ T465] ? ip6_route_info_create+0xf18/0x17d0 [ 48.795346][ T465] ? addrconf_f6i_alloc+0x265/0x560 [ 48.795504][ T465] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 48.795659][ T465] ? addrconf_join_anycast+0x1c0/0x220 [ 48.795887][ T465] ? dev_forward_change+0x2a6/0x7b0 [ 48.796044][ T465] ? addrconf_fixup_forwarding+0x23f/0x460 [ 48.796215][ T465] ? addrconf_sysctl_forward+0x212/0x2b0 [ 48.796371][ T465] ? proc_sys_call_handler+0x403/0x5e0 [ 48.796638][ T465] ? vfs_write+0x9e5/0x10a0 [ 48.796776][ T465] ? ksys_write+0xf5/0x1e0 [ 48.796929][ T465] ? do_syscall_64+0xc6/0x1e0 [ 48.797080][ T465] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.797351][ T465] ? dev_get_by_index+0x177/0x270 [ 48.797523][ T465] netdev_get_by_index+0x5e/0x80 [ 48.797676][ T465] fib6_nh_init+0x3d8/0x15b0 [ 48.797824][ T465] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 48.798095][ T465] ? __pfx_fib6_nh_init+0x10/0x10 [ 48.798244][ T465] ? kasan_save_track+0x14/0x30 [ 48.798396][ T465] ? __kasan_kmalloc+0x7f/0x90 [ 48.798561][ T465] ? __kmalloc+0x1d7/0x3c0 [ 48.798804][ T465] ? fib6_get_table+0x116/0x290 [ 48.798969][ T465] ip6_route_info_create+0xf18/0x17d0 [ 48.799137][ T465] ? __lock_release+0x103/0x460 [ 48.799305][ T465] ? __pfx_ip6_route_info_create+0x10/0x10 [ 48.799538][ T465] ? addrconf_f6i_alloc+0x12d/0x560 [ 48.799696][ T465] addrconf_f6i_alloc+0x265/0x560 [ 48.799870][ T465] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 48.800025][ T465] ? do_raw_write_lock+0x122/0x3b0 [ 48.800212][ T465] ? __pfx_do_raw_write_lock+0x10/0x10 [ 48.800358][ T465] ? lock_acquire+0x32/0xc0 [ 48.800529][ T465] __ipv6_dev_ac_inc+0x25f/0xb10 [ 48.800689][ T465] addrconf_join_anycast+0x1c0/0x220 [ 48.800860][ T465] ? mark_lock+0x38/0x3e0 [ 48.801063][ T465] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 48.801263][ T465] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 48.801462][ T465] dev_forward_change+0x2a6/0x7b0 [ 48.801611][ T465] ? __pfx_dev_forward_change+0x10/0x10 [ 48.801878][ T465] addrconf_fixup_forwarding+0x23f/0x460 [ 48.802045][ T465] addrconf_sysctl_forward+0x212/0x2b0 [ 48.802201][ T465] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 48.802386][ T465] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 48.802570][ T465] ? trace_kmalloc+0x2a/0xe0 [ 48.802720][ T465] ? __kmalloc_node+0x220/0x400 [ 48.802869][ T465] ? proc_sys_call_handler+0x30b/0x5e0 [ 48.803018][ T465] proc_sys_call_handler+0x403/0x5e0 [ 48.803166][ T465] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 48.803349][ T465] ? __lock_acquire+0xaf0/0x1570 [ 48.803505][ T465] vfs_write+0x9e5/0x10a0 [ 48.803618][ T465] ? do_user_addr_fault+0x449/0xbe0 [ 48.803850][ T465] ? __pfx_vfs_write+0x10/0x10 [ 48.803998][ T465] ? find_held_lock+0x2c/0x110 [ 48.804147][ T465] ? __pfx___lock_release+0x10/0x10 [ 48.804296][ T465] ? __fget_light+0x53/0x1e0 [ 48.804605][ T465] ksys_write+0xf5/0x1e0 [ 48.804719][ T465] ? __pfx_ksys_write+0x10/0x10 [ 48.804869][ T465] ? do_user_addr_fault+0x4bd/0xbe0 [ 48.805021][ T465] do_syscall_64+0xc6/0x1e0 [ 48.805170][ T465] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 48.805460][ T465] RIP: 0033:0x7f895c397957 [ 48.805622][ T465] 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 [ 48.806229][ T465] RSP: 002b:00007ffdbded9318 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 48.806461][ T465] RAX: ffffffffffffffda RBX: 0000557a8e6f9360 RCX: 00007f895c397957 [ 48.806685][ T465] RDX: 0000000000000002 RSI: 0000557a8e6f93a0 RDI: 0000000000000005 [ 48.806992][ T465] RBP: 0000557a8e6fb4d0 R08: 0000000000000003 R09: 0000000000000077 [ 48.807215][ T465] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 48.807440][ T465] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f895c44e9c0 [ 48.807672][ T465]