[ 24.979679][ T258] ip (258) used greatest stack depth: 24032 bytes left [ 30.116332][ T309] gre: GRE over IPv4 demultiplexor driver [ 30.141588][ T309] ip_gre: GRE over IPv4 tunneling driver [ 32.291178][ T331] 8021q: 802.1Q VLAN Support v1.8 [ 36.376982][ T369] GACT probability NOT on [ 39.984407][ T402] [ 39.984582][ T402] ===================================================== [ 39.984759][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 39.984966][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 39.985102][ T402] ----------------------------------------------------- [ 39.985277][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 39.985480][ T402] ffff888005404ee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 39.985734][ T402] [ 39.985734][ T402] and this task is already holding: [ 39.985931][ T402] ffff888007e10d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.986176][ T402] which would create a new lock dependency: [ 39.986343][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 39.986556][ T402] [ 39.986556][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 39.986786][ T402] (&ndev->lock){++--}-{2:2} [ 39.986790][ T402] [ 39.986790][ T402] ... which became SOFTIRQ-irq-safe at: [ 39.987117][ T402] __lock_acquire+0x797/0x1570 [ 39.987255][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.987389][ T402] _raw_write_lock+0x30/0x40 [ 39.987527][ T402] addrconf_rs_timer+0xa9/0x730 [ 39.987663][ T402] call_timer_fn+0x13b/0x230 [ 39.987800][ T402] __run_timers+0x545/0x810 [ 39.987937][ T402] run_timer_softirq+0xe8/0x1b0 [ 39.988072][ T402] __do_softirq+0x1f8/0x5df [ 39.988208][ T402] irq_exit_rcu+0x97/0xc0 [ 39.988342][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 39.988475][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 39.988646][ T402] default_idle+0xf/0x20 [ 39.988750][ T402] default_idle_call+0x6d/0xb0 [ 39.988884][ T402] cpuidle_idle_call+0x1f4/0x280 [ 39.989020][ T402] do_idle+0xf9/0x160 [ 39.989126][ T402] cpu_startup_entry+0x54/0x60 [ 39.989263][ T402] start_secondary+0x21c/0x2b0 [ 39.989401][ T402] common_startup_64+0x12c/0x138 [ 39.989537][ T402] [ 39.989537][ T402] to a SOFTIRQ-irq-unsafe lock: [ 39.989701][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 39.989705][ T402] [ 39.989705][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 39.990039][ T402] ... [ 39.990040][ T402] __lock_acquire+0x797/0x1570 [ 39.990247][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.990385][ T402] _raw_spin_lock+0x30/0x40 [ 39.990519][ T402] set_mems_allowed+0x1d/0x210 [ 39.990654][ T402] kernel_init_freeable+0x72/0x310 [ 39.990791][ T402] kernel_init+0x20/0x200 [ 39.990926][ T402] ret_from_fork+0x31/0x70 [ 39.991074][ T402] ret_from_fork_asm+0x1a/0x30 [ 39.991207][ T402] [ 39.991207][ T402] other info that might help us debug this: [ 39.991207][ T402] [ 39.991475][ T402] Possible interrupt unsafe locking scenario: [ 39.991475][ T402] [ 39.991674][ T402] CPU0 CPU1 [ 39.991807][ T402] ---- ---- [ 39.991942][ T402] lock(&p->alloc_lock); [ 39.992047][ T402] local_irq_disable(); [ 39.992212][ T402] lock(&ndev->lock); [ 39.992384][ T402] lock(&p->alloc_lock); [ 39.992551][ T402] [ 39.992656][ T402] lock(&ndev->lock); [ 39.992759][ T402] [ 39.992759][ T402] *** DEADLOCK *** [ 39.992759][ T402] [ 39.992954][ T402] 3 locks held by sysctl/402: [ 39.993092][ T402] #0: ffff8880044613f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 39.993341][ T402] #1: ffffffffa95969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 39.993616][ T402] #2: ffff888007e10d80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 39.993858][ T402] [ 39.993858][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 39.994120][ T402] -> (&ndev->lock){++--}-{2:2} { [ 39.994261][ T402] HARDIRQ-ON-W at: [ 39.994369][ T402] __lock_acquire+0x797/0x1570 [ 39.994546][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.994719][ T402] _raw_write_lock_bh+0x38/0x50 [ 39.994891][ T402] addrconf_permanent_addr+0x6e/0x670 [ 39.995063][ T402] addrconf_notify+0x749/0xd60 [ 39.995236][ T402] notifier_call_chain+0xcd/0x150 [ 39.995409][ T402] __dev_notify_flags+0xe6/0x250 [ 39.995589][ T402] dev_change_flags+0xec/0x160 [ 39.995761][ T402] do_setlink+0x7d6/0x21e0 [ 39.995937][ T402] __rtnl_newlink+0xaa7/0xd80 [ 39.996108][ T402] rtnl_newlink+0x63/0xa0 [ 39.996285][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 39.996455][ T402] netlink_rcv_skb+0x130/0x360 [ 39.996631][ T402] netlink_unicast+0x449/0x710 [ 39.996805][ T402] netlink_sendmsg+0x723/0xbe0 [ 39.996977][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 39.997148][ T402] ___sys_sendmsg+0xee/0x170 [ 39.997328][ T402] __sys_sendmsg+0xcd/0x170 [ 39.997498][ T402] do_syscall_64+0xc6/0x1e0 [ 39.997669][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 39.997879][ T402] HARDIRQ-ON-R at: [ 39.997985][ T402] __lock_acquire+0x797/0x1570 [ 39.998157][ T402] lock_acquire.part.0+0xeb/0x330 [ 39.998332][ T402] _raw_read_lock_bh+0x44/0x80 [ 39.998504][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 39.998675][ T402] inet6_fill_link_af+0x5e/0xe0 [ 39.998849][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 39.999019][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 39.999192][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 39.999395][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 39.999566][ T402] register_netdevice+0x1177/0x1690 [ 39.999737][ T402] register_netdev+0x20/0x40 [ 39.999908][ T402] sit_init_net+0x250/0x4f0 [ 40.000081][ T402] ops_init+0x9b/0x560 [ 40.000219][ T402] register_pernet_operations+0x2db/0x710 [ 40.000432][ T402] register_pernet_device+0x2a/0x60 [ 40.000602][ T402] sit_init+0x23/0xe0 [ 40.000740][ T402] do_one_initcall+0x8d/0x1e0 [ 40.000915][ T402] do_initcalls+0x1b2/0x3e0 [ 40.001106][ T402] kernel_init_freeable+0x232/0x310 [ 40.001277][ T402] kernel_init+0x20/0x200 [ 40.001447][ T402] ret_from_fork+0x31/0x70 [ 40.001617][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.001786][ T402] IN-SOFTIRQ-W at: [ 40.001890][ T402] __lock_acquire+0x797/0x1570 [ 40.002061][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.002236][ T402] _raw_write_lock+0x30/0x40 [ 40.002408][ T402] addrconf_rs_timer+0xa9/0x730 [ 40.002579][ T402] call_timer_fn+0x13b/0x230 [ 40.002752][ T402] __run_timers+0x545/0x810 [ 40.002922][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.003091][ T402] __do_softirq+0x1f8/0x5df [ 40.003362][ T402] irq_exit_rcu+0x97/0xc0 [ 40.003534][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.003739][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.004027][ T402] default_idle+0xf/0x20 [ 40.004197][ T402] default_idle_call+0x6d/0xb0 [ 40.004366][ T402] cpuidle_idle_call+0x1f4/0x280 [ 40.004539][ T402] do_idle+0xf9/0x160 [ 40.004760][ T402] cpu_startup_entry+0x54/0x60 [ 40.004931][ T402] start_secondary+0x21c/0x2b0 [ 40.005102][ T402] common_startup_64+0x12c/0x138 [ 40.005353][ T402] IN-SOFTIRQ-R at: [ 40.005457][ T402] __lock_acquire+0x797/0x1570 [ 40.005627][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.005801][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.006055][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 40.006224][ T402] addrconf_rs_timer+0x24a/0x730 [ 40.006393][ T402] call_timer_fn+0x13b/0x230 [ 40.006726][ T402] __run_timers+0x545/0x810 [ 40.006897][ T402] run_timer_softirq+0xe8/0x1b0 [ 40.007067][ T402] __do_softirq+0x1f8/0x5df [ 40.007242][ T402] irq_exit_rcu+0x97/0xc0 [ 40.007493][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 40.007698][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 40.007906][ T402] default_idle+0xf/0x20 [ 40.008157][ T402] default_idle_call+0x6d/0xb0 [ 40.008326][ T402] cpuidle_idle_call+0x1f4/0x280 [ 40.008504][ T402] do_idle+0xf9/0x160 [ 40.008723][ T402] cpu_startup_entry+0x54/0x60 [ 40.008897][ T402] start_secondary+0x21c/0x2b0 [ 40.009069][ T402] common_startup_64+0x12c/0x138 [ 40.009238][ T402] INITIAL USE at: [ 40.009421][ T402] __lock_acquire+0x797/0x1570 [ 40.009593][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.009768][ T402] _raw_write_lock_bh+0x38/0x50 [ 40.009941][ T402] addrconf_permanent_addr+0x6e/0x670 [ 40.010192][ T402] addrconf_notify+0x749/0xd60 [ 40.010363][ T402] notifier_call_chain+0xcd/0x150 [ 40.010532][ T402] __dev_notify_flags+0xe6/0x250 [ 40.010785][ T402] dev_change_flags+0xec/0x160 [ 40.010962][ T402] do_setlink+0x7d6/0x21e0 [ 40.011150][ T402] __rtnl_newlink+0xaa7/0xd80 [ 40.011402][ T402] rtnl_newlink+0x63/0xa0 [ 40.011572][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 40.011742][ T402] netlink_rcv_skb+0x130/0x360 [ 40.011913][ T402] netlink_unicast+0x449/0x710 [ 40.012165][ T402] netlink_sendmsg+0x723/0xbe0 [ 40.012341][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 40.012513][ T402] ___sys_sendmsg+0xee/0x170 [ 40.012766][ T402] __sys_sendmsg+0xcd/0x170 [ 40.012937][ T402] do_syscall_64+0xc6/0x1e0 [ 40.013108][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.013397][ T402] INITIAL READ USE at: [ 40.013499][ T402] __lock_acquire+0x797/0x1570 [ 40.013676][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.013847][ T402] _raw_read_lock_bh+0x44/0x80 [ 40.014098][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 40.014301][ T402] inet6_fill_link_af+0x5e/0xe0 [ 40.014470][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 40.014725][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 40.014929][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 40.015132][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 40.015383][ T402] register_netdevice+0x1177/0x1690 [ 40.015585][ T402] register_netdev+0x20/0x40 [ 40.015753][ T402] sit_init_net+0x250/0x4f0 [ 40.015928][ T402] ops_init+0x9b/0x560 [ 40.016183][ T402] register_pernet_operations+0x2db/0x710 [ 40.016386][ T402] register_pernet_device+0x2a/0x60 [ 40.016588][ T402] sit_init+0x23/0xe0 [ 40.016849][ T402] do_one_initcall+0x8d/0x1e0 [ 40.017021][ T402] do_initcalls+0x1b2/0x3e0 [ 40.017196][ T402] kernel_init_freeable+0x232/0x310 [ 40.017565][ T402] kernel_init+0x20/0x200 [ 40.017736][ T402] ret_from_fork+0x31/0x70 [ 40.017915][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.018170][ T402] } [ 40.018241][ T402] ... key at: [] __key.37+0x0/0x40 [ 40.018447][ T402] [ 40.018447][ T402] the dependencies between the lock to be acquired [ 40.018449][ T402] and SOFTIRQ-irq-unsafe lock: [ 40.018897][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 40.019045][ T402] HARDIRQ-ON-W at: [ 40.019151][ T402] __lock_acquire+0x797/0x1570 [ 40.019325][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.019579][ T402] _raw_spin_lock+0x30/0x40 [ 40.019756][ T402] set_mems_allowed+0x1d/0x210 [ 40.019927][ T402] kernel_init_freeable+0x72/0x310 [ 40.020179][ T402] kernel_init+0x20/0x200 [ 40.020350][ T402] ret_from_fork+0x31/0x70 [ 40.020521][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.020693][ T402] SOFTIRQ-ON-W at: [ 40.020874][ T402] __lock_acquire+0x797/0x1570 [ 40.021059][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.021229][ T402] _raw_spin_lock+0x30/0x40 [ 40.021481][ T402] set_mems_allowed+0x1d/0x210 [ 40.021650][ T402] kernel_init_freeable+0x72/0x310 [ 40.021819][ T402] kernel_init+0x20/0x200 [ 40.021988][ T402] ret_from_fork+0x31/0x70 [ 40.022237][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.022410][ T402] INITIAL USE at: [ 40.022513][ T402] __lock_acquire+0x797/0x1570 [ 40.022683][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.022937][ T402] _raw_spin_lock+0x30/0x40 [ 40.023107][ T402] set_mems_allowed+0x1d/0x210 [ 40.023275][ T402] kernel_init_freeable+0x72/0x310 [ 40.023444][ T402] kernel_init+0x20/0x200 [ 40.023618][ T402] ret_from_fork+0x31/0x70 [ 40.023788][ T402] ret_from_fork_asm+0x1a/0x30 [ 40.024040][ T402] } [ 40.024110][ T402] ... key at: [] __key.387+0x0/0x40 [ 40.024311][ T402] ... acquired at: [ 40.024414][ T402] check_prev_add+0x194/0xce0 [ 40.024550][ T402] validate_chain+0x71d/0x9b0 [ 40.024766][ T402] __lock_acquire+0xaf0/0x1570 [ 40.024905][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.025040][ T402] _raw_spin_lock+0x30/0x40 [ 40.025175][ T402] __get_task_comm+0x27/0x70 [ 40.025391][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.025534][ T402] netdev_get_by_index+0x5e/0x80 [ 40.025668][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.025807][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.026021][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.026162][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.026299][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.026442][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.026577][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.026826][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.026963][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.027101][ T402] vfs_write+0x9e5/0x10a0 [ 40.027245][ T402] ksys_write+0xf5/0x1e0 [ 40.027459][ T402] do_syscall_64+0xc6/0x1e0 [ 40.027595][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.027765][ T402] [ 40.027835][ T402] [ 40.027835][ T402] stack backtrace: [ 40.028160][ T402] CPU: 2 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 40.028362][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 40.028747][ T402] Call Trace: [ 40.028850][ T402] [ 40.028921][ T402] dump_stack_lvl+0x82/0xd0 [ 40.029059][ T402] print_bad_irq_dependency+0x957/0xd40 [ 40.029196][ T402] ? hlock_class+0x4e/0x130 [ 40.029411][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 40.029587][ T402] ? __pfx_usage_skip+0x10/0x10 [ 40.029721][ T402] ? __bfs+0x246/0x650 [ 40.029826][ T402] ? __pfx_usage_match+0x10/0x10 [ 40.029964][ T402] check_irq_usage+0x596/0x850 [ 40.030181][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 40.030317][ T402] ? __bfs+0x246/0x650 [ 40.030425][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 40.030570][ T402] ? check_path.constprop.0+0x24/0x50 [ 40.030784][ T402] ? check_noncircular+0x14c/0x3e0 [ 40.030919][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 40.031079][ T402] ? check_prev_add+0x194/0xce0 [ 40.031219][ T402] check_prev_add+0x194/0xce0 [ 40.031436][ T402] ? validate_chain+0x130/0x9b0 [ 40.031573][ T402] validate_chain+0x71d/0x9b0 [ 40.031711][ T402] ? mark_lock+0x38/0x3e0 [ 40.031815][ T402] ? __pfx_validate_chain+0x10/0x10 [ 40.031953][ T402] ? hlock_class+0x4e/0x130 [ 40.032170][ T402] ? mark_lock+0x38/0x3e0 [ 40.032273][ T402] __lock_acquire+0xaf0/0x1570 [ 40.032414][ T402] lock_acquire.part.0+0xeb/0x330 [ 40.032550][ T402] ? __get_task_comm+0x27/0x70 [ 40.032768][ T402] ? mark_lock+0x38/0x3e0 [ 40.032870][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 40.033007][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 40.033142][ T402] ? __get_task_comm+0x27/0x70 [ 40.033276][ T402] ? lock_acquire+0x32/0xc0 [ 40.033491][ T402] ? __get_task_comm+0x27/0x70 [ 40.033628][ T402] _raw_spin_lock+0x30/0x40 [ 40.033768][ T402] ? __get_task_comm+0x27/0x70 [ 40.033903][ T402] __get_task_comm+0x27/0x70 [ 40.034123][ T402] ref_tracker_alloc+0x2ee/0x490 [ 40.034260][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 40.034397][ T402] ? dev_get_by_index+0x177/0x270 [ 40.034533][ T402] ? netdev_get_by_index+0x5e/0x80 [ 40.034747][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 40.034883][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 40.035023][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 40.035161][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.035297][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 40.035515][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 40.035651][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 40.035821][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 40.035956][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 40.036177][ T402] ? vfs_write+0x9e5/0x10a0 [ 40.036312][ T402] ? ksys_write+0xf5/0x1e0 [ 40.036447][ T402] ? do_syscall_64+0xc6/0x1e0 [ 40.036583][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.036831][ T402] ? dev_get_by_index+0x177/0x270 [ 40.036966][ T402] netdev_get_by_index+0x5e/0x80 [ 40.037101][ T402] fib6_nh_init+0x3d8/0x15b0 [ 40.037237][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 40.037490][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 40.037626][ T402] ? kasan_save_track+0x14/0x30 [ 40.037763][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 40.037897][ T402] ? __kmalloc+0x1d7/0x3c0 [ 40.038114][ T402] ? fib6_get_table+0x116/0x290 [ 40.038249][ T402] ip6_route_info_create+0xf18/0x17d0 [ 40.038384][ T402] ? __lock_release+0x103/0x460 [ 40.038521][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 40.038851][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 40.038992][ T402] addrconf_f6i_alloc+0x265/0x560 [ 40.039130][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 40.039270][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 40.039487][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 40.039623][ T402] ? lock_acquire+0x32/0xc0 [ 40.039761][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 40.039897][ T402] addrconf_join_anycast+0x1c0/0x220 [ 40.040113][ T402] ? mark_lock+0x38/0x3e0 [ 40.040221][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 40.040392][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 40.040560][ T402] dev_forward_change+0x2a6/0x7b0 [ 40.040776][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 40.040914][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 40.041069][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 40.041207][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.041461][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 40.041632][ T402] ? trace_kmalloc+0x2a/0xe0 [ 40.041769][ T402] ? __kmalloc_node+0x220/0x400 [ 40.041905][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 40.042122][ T402] proc_sys_call_handler+0x403/0x5e0 [ 40.042259][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 40.042431][ T402] ? __lock_acquire+0xaf0/0x1570 [ 40.042571][ T402] vfs_write+0x9e5/0x10a0 [ 40.042679][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 40.042894][ T402] ? __pfx_vfs_write+0x10/0x10 [ 40.043030][ T402] ? find_held_lock+0x2c/0x110 [ 40.043167][ T402] ? __pfx___lock_release+0x10/0x10 [ 40.043302][ T402] ? __fget_light+0x53/0x1e0 [ 40.043523][ T402] ksys_write+0xf5/0x1e0 [ 40.043625][ T402] ? __pfx_ksys_write+0x10/0x10 [ 40.043760][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 40.043899][ T402] do_syscall_64+0xc6/0x1e0 [ 40.044116][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 40.044289][ T402] RIP: 0033:0x7fd319212957 [ 40.044434][ T402] 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 [ 40.045008][ T402] RSP: 002b:00007ffd4e2cd488 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 40.045218][ T402] RAX: ffffffffffffffda RBX: 00005620cd96b360 RCX: 00007fd319212957 [ 40.045504][ T402] RDX: 0000000000000002 RSI: 00005620cd96b3a0 RDI: 0000000000000005 [ 40.045710][ T402] RBP: 00005620cd96d4d0 R08: 0000000000000003 R09: 0000000000000077 [ 40.045915][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 40.046202][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fd3192c99c0 [ 40.046416][ T402]