[ 28.365405][ T235] ip (235) used greatest stack depth: 23616 bytes left [ 28.975210][ T247] ip (247) used greatest stack depth: 23472 bytes left [ 34.877465][ T309] gre: GRE over IPv4 demultiplexor driver [ 34.930195][ T309] ip6_gre: GRE over IPv6 tunneling driver [ 37.208201][ T330] 8021q: 802.1Q VLAN Support v1.8 [ 41.460448][ T368] GACT probability NOT on [ 45.295723][ T402] [ 45.295839][ T402] ===================================================== [ 45.296047][ T402] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 45.296257][ T402] 6.9.0-rc1-virtme #1 Not tainted [ 45.296397][ T402] ----------------------------------------------------- [ 45.296591][ T402] sysctl/402 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 45.296804][ T402] ffff8880051d2c28 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 45.297082][ T402] [ 45.297082][ T402] and this task is already holding: [ 45.297387][ T402] ffff88800294ed80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.297671][ T402] which would create a new lock dependency: [ 45.297849][ T402] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 45.298074][ T402] [ 45.298074][ T402] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 45.298313][ T402] (&ndev->lock){++--}-{2:2} [ 45.298317][ T402] [ 45.298317][ T402] ... which became SOFTIRQ-irq-safe at: [ 45.298672][ T402] __lock_acquire+0x797/0x1570 [ 45.298819][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.298961][ T402] _raw_write_lock+0x30/0x40 [ 45.299119][ T402] addrconf_rs_timer+0xa9/0x730 [ 45.299257][ T402] call_timer_fn+0x13b/0x230 [ 45.299398][ T402] __run_timers+0x545/0x810 [ 45.299538][ T402] timer_expire_remote+0x9b/0xe0 [ 45.299678][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 45.299817][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.299955][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 45.300094][ T402] __do_softirq+0x1f8/0x5df [ 45.300237][ T402] irq_exit_rcu+0x97/0xc0 [ 45.300382][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.300523][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.300709][ T402] default_idle+0xf/0x20 [ 45.300837][ T402] default_idle_call+0x6d/0xb0 [ 45.300977][ T402] cpuidle_idle_call+0x1f4/0x280 [ 45.301133][ T402] do_idle+0xf9/0x160 [ 45.301239][ T402] cpu_startup_entry+0x54/0x60 [ 45.301382][ T402] start_secondary+0x21c/0x2b0 [ 45.301534][ T402] common_startup_64+0x12c/0x138 [ 45.301682][ T402] [ 45.301682][ T402] to a SOFTIRQ-irq-unsafe lock: [ 45.301855][ T402] (&p->alloc_lock){+.+.}-{2:2} [ 45.301860][ T402] [ 45.301860][ T402] ... which became SOFTIRQ-irq-unsafe at: [ 45.302202][ T402] ... [ 45.302203][ T402] __lock_acquire+0x797/0x1570 [ 45.302420][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.302574][ T402] _raw_spin_lock+0x30/0x40 [ 45.302714][ T402] set_mems_allowed+0x1d/0x210 [ 45.302859][ T402] kernel_init_freeable+0x72/0x310 [ 45.303015][ T402] kernel_init+0x20/0x200 [ 45.303153][ T402] ret_from_fork+0x31/0x70 [ 45.303296][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.303435][ T402] [ 45.303435][ T402] other info that might help us debug this: [ 45.303435][ T402] [ 45.303713][ T402] Possible interrupt unsafe locking scenario: [ 45.303713][ T402] [ 45.303919][ T402] CPU0 CPU1 [ 45.304060][ T402] ---- ---- [ 45.304196][ T402] lock(&p->alloc_lock); [ 45.304311][ T402] local_irq_disable(); [ 45.304485][ T402] lock(&ndev->lock); [ 45.304662][ T402] lock(&p->alloc_lock); [ 45.304833][ T402] [ 45.304941][ T402] lock(&ndev->lock); [ 45.305050][ T402] [ 45.305050][ T402] *** DEADLOCK *** [ 45.305050][ T402] [ 45.305252][ T402] 3 locks held by sysctl/402: [ 45.305405][ T402] #0: ffff8880063e43f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 45.305658][ T402] #1: ffffffffa5d969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 45.305949][ T402] #2: ffff88800294ed80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 45.306193][ T402] [ 45.306193][ T402] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 45.306494][ T402] -> (&ndev->lock){++--}-{2:2} { [ 45.306639][ T402] HARDIRQ-ON-W at: [ 45.306745][ T402] __lock_acquire+0x797/0x1570 [ 45.306947][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.307126][ T402] _raw_write_lock_bh+0x38/0x50 [ 45.307307][ T402] addrconf_permanent_addr+0x6e/0x670 [ 45.307485][ T402] addrconf_notify+0x749/0xd60 [ 45.307661][ T402] notifier_call_chain+0xcd/0x150 [ 45.307862][ T402] __dev_notify_flags+0xe6/0x250 [ 45.308055][ T402] dev_change_flags+0xec/0x160 [ 45.308236][ T402] do_setlink+0x7d6/0x21e0 [ 45.308416][ T402] __rtnl_newlink+0xaa7/0xd80 [ 45.308593][ T402] rtnl_newlink+0x63/0xa0 [ 45.308766][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.308942][ T402] netlink_rcv_skb+0x130/0x360 [ 45.309116][ T402] netlink_unicast+0x449/0x710 [ 45.309303][ T402] netlink_sendmsg+0x723/0xbe0 [ 45.309482][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 45.309659][ T402] ___sys_sendmsg+0xee/0x170 [ 45.309834][ T402] __sys_sendmsg+0xcd/0x170 [ 45.310007][ T402] do_syscall_64+0xc6/0x1e0 [ 45.310183][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.310395][ T402] HARDIRQ-ON-R at: [ 45.310515][ T402] __lock_acquire+0x797/0x1570 [ 45.310689][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.310865][ T402] _raw_read_lock_bh+0x44/0x80 [ 45.311043][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.311220][ T402] inet6_fill_link_af+0x5e/0xe0 [ 45.311395][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.311581][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.311757][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.311969][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 45.312143][ T402] register_netdevice+0x1177/0x1690 [ 45.312317][ T402] register_netdev+0x20/0x40 [ 45.312493][ T402] sit_init_net+0x250/0x4f0 [ 45.312677][ T402] ops_init+0x9b/0x560 [ 45.312835][ T402] register_pernet_operations+0x2db/0x710 [ 45.313056][ T402] register_pernet_device+0x2a/0x60 [ 45.313245][ T402] sit_init+0x23/0xe0 [ 45.313403][ T402] do_one_initcall+0x8d/0x1e0 [ 45.313591][ T402] do_initcalls+0x1b2/0x3e0 [ 45.313773][ T402] kernel_init_freeable+0x232/0x310 [ 45.313957][ T402] kernel_init+0x20/0x200 [ 45.314135][ T402] ret_from_fork+0x31/0x70 [ 45.314312][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.314508][ T402] IN-SOFTIRQ-W at: [ 45.314618][ T402] __lock_acquire+0x797/0x1570 [ 45.314791][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.314974][ T402] _raw_write_lock+0x30/0x40 [ 45.315158][ T402] addrconf_rs_timer+0xa9/0x730 [ 45.315334][ T402] call_timer_fn+0x13b/0x230 [ 45.315546][ T402] __run_timers+0x545/0x810 [ 45.315721][ T402] timer_expire_remote+0x9b/0xe0 [ 45.315897][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 45.316077][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.316262][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 45.316436][ T402] __do_softirq+0x1f8/0x5df [ 45.316615][ T402] irq_exit_rcu+0x97/0xc0 [ 45.316795][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.317024][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.317236][ T402] default_idle+0xf/0x20 [ 45.317425][ T402] default_idle_call+0x6d/0xb0 [ 45.317609][ T402] cpuidle_idle_call+0x1f4/0x280 [ 45.317789][ T402] do_idle+0xf9/0x160 [ 45.317939][ T402] cpu_startup_entry+0x54/0x60 [ 45.318124][ T402] start_secondary+0x21c/0x2b0 [ 45.318390][ T402] common_startup_64+0x12c/0x138 [ 45.318584][ T402] IN-SOFTIRQ-R at: [ 45.318691][ T402] __lock_acquire+0x797/0x1570 [ 45.318872][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.319137][ T402] _raw_read_lock_bh+0x44/0x80 [ 45.319339][ T402] ipv6_get_lladdr+0xa9/0x3e0 [ 45.319528][ T402] addrconf_rs_timer+0x24a/0x730 [ 45.319788][ T402] call_timer_fn+0x13b/0x230 [ 45.319980][ T402] __run_timers+0x545/0x810 [ 45.320155][ T402] timer_expire_remote+0x9b/0xe0 [ 45.320427][ T402] tmigr_handle_remote_cpu+0x270/0x430 [ 45.320606][ T402] tmigr_handle_remote_up+0x19f/0x2e0 [ 45.320796][ T402] tmigr_handle_remote+0x21d/0x3a0 [ 45.320977][ T402] __do_softirq+0x1f8/0x5df [ 45.321167][ T402] irq_exit_rcu+0x97/0xc0 [ 45.321344][ T402] sysvec_apic_timer_interrupt+0x75/0x80 [ 45.321571][ T402] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 45.321872][ T402] default_idle+0xf/0x20 [ 45.322043][ T402] default_idle_call+0x6d/0xb0 [ 45.322219][ T402] cpuidle_idle_call+0x1f4/0x280 [ 45.322498][ T402] do_idle+0xf9/0x160 [ 45.322639][ T402] cpu_startup_entry+0x54/0x60 [ 45.322828][ T402] start_secondary+0x21c/0x2b0 [ 45.323015][ T402] common_startup_64+0x12c/0x138 [ 45.323200][ T402] INITIAL USE at: [ 45.323310][ T402] __lock_acquire+0x797/0x1570 [ 45.323501][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.323687][ T402] _raw_write_lock_bh+0x38/0x50 [ 45.323953][ T402] addrconf_permanent_addr+0x6e/0x670 [ 45.324130][ T402] addrconf_notify+0x749/0xd60 [ 45.324309][ T402] notifier_call_chain+0xcd/0x150 [ 45.324576][ T402] __dev_notify_flags+0xe6/0x250 [ 45.324757][ T402] dev_change_flags+0xec/0x160 [ 45.324935][ T402] do_setlink+0x7d6/0x21e0 [ 45.325119][ T402] __rtnl_newlink+0xaa7/0xd80 [ 45.325298][ T402] rtnl_newlink+0x63/0xa0 [ 45.325477][ T402] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 45.325656][ T402] netlink_rcv_skb+0x130/0x360 [ 45.325918][ T402] netlink_unicast+0x449/0x710 [ 45.326090][ T402] netlink_sendmsg+0x723/0xbe0 [ 45.326268][ T402] ____sys_sendmsg+0x7b2/0xa10 [ 45.326534][ T402] ___sys_sendmsg+0xee/0x170 [ 45.326708][ T402] __sys_sendmsg+0xcd/0x170 [ 45.326897][ T402] do_syscall_64+0xc6/0x1e0 [ 45.327074][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.327363][ T402] INITIAL READ USE at: [ 45.327481][ T402] __lock_acquire+0x797/0x1570 [ 45.327664][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.327932][ T402] _raw_read_lock_bh+0x44/0x80 [ 45.328105][ T402] inet6_fill_ifla6_attrs+0x516/0x740 [ 45.328321][ T402] inet6_fill_link_af+0x5e/0xe0 [ 45.328586][ T402] rtnl_fill_ifinfo+0x1612/0x29e0 [ 45.328768][ T402] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 45.328982][ T402] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 45.329280][ T402] rtmsg_ifinfo+0x5b/0xa0 [ 45.329458][ T402] register_netdevice+0x1177/0x1690 [ 45.329674][ T402] register_netdev+0x20/0x40 [ 45.329848][ T402] sit_init_net+0x250/0x4f0 [ 45.330114][ T402] ops_init+0x9b/0x560 [ 45.330290][ T402] register_pernet_operations+0x2db/0x710 [ 45.330497][ T402] register_pernet_device+0x2a/0x60 [ 45.330799][ T402] sit_init+0x23/0xe0 [ 45.330973][ T402] do_one_initcall+0x8d/0x1e0 [ 45.331149][ T402] do_initcalls+0x1b2/0x3e0 [ 45.331418][ T402] kernel_init_freeable+0x232/0x310 [ 45.331622][ T402] kernel_init+0x20/0x200 [ 45.331792][ T402] ret_from_fork+0x31/0x70 [ 45.332063][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.332234][ T402] } [ 45.332307][ T402] ... key at: [] __key.37+0x0/0x40 [ 45.332528][ T402] [ 45.332528][ T402] the dependencies between the lock to be acquired [ 45.332530][ T402] and SOFTIRQ-irq-unsafe lock: [ 45.333002][ T402] -> (&p->alloc_lock){+.+.}-{2:2} { [ 45.333157][ T402] HARDIRQ-ON-W at: [ 45.333265][ T402] __lock_acquire+0x797/0x1570 [ 45.333539][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.333713][ T402] _raw_spin_lock+0x30/0x40 [ 45.333886][ T402] set_mems_allowed+0x1d/0x210 [ 45.334067][ T402] kernel_init_freeable+0x72/0x310 [ 45.334239][ T402] kernel_init+0x20/0x200 [ 45.334418][ T402] ret_from_fork+0x31/0x70 [ 45.334592][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.334851][ T402] SOFTIRQ-ON-W at: [ 45.334959][ T402] __lock_acquire+0x797/0x1570 [ 45.335133][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.335403][ T402] _raw_spin_lock+0x30/0x40 [ 45.335588][ T402] set_mems_allowed+0x1d/0x210 [ 45.335762][ T402] kernel_init_freeable+0x72/0x310 [ 45.335940][ T402] kernel_init+0x20/0x200 [ 45.336190][ T402] ret_from_fork+0x31/0x70 [ 45.336376][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.336562][ T402] INITIAL USE at: [ 45.336670][ T402] __lock_acquire+0x797/0x1570 [ 45.336937][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.337120][ T402] _raw_spin_lock+0x30/0x40 [ 45.337304][ T402] set_mems_allowed+0x1d/0x210 [ 45.337561][ T402] kernel_init_freeable+0x72/0x310 [ 45.337736][ T402] kernel_init+0x20/0x200 [ 45.337914][ T402] ret_from_fork+0x31/0x70 [ 45.338175][ T402] ret_from_fork_asm+0x1a/0x30 [ 45.338347][ T402] } [ 45.338418][ T402] ... key at: [] __key.387+0x0/0x40 [ 45.338643][ T402] ... acquired at: [ 45.338747][ T402] check_prev_add+0x194/0xce0 [ 45.338974][ T402] validate_chain+0x71d/0x9b0 [ 45.339113][ T402] __lock_acquire+0xaf0/0x1570 [ 45.339265][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.339404][ T402] _raw_spin_lock+0x30/0x40 [ 45.339624][ T402] __get_task_comm+0x27/0x70 [ 45.339773][ T402] ref_tracker_alloc+0x2ee/0x490 [ 45.339916][ T402] netdev_get_by_index+0x5e/0x80 [ 45.340054][ T402] fib6_nh_init+0x3d8/0x15b0 [ 45.340279][ T402] ip6_route_info_create+0xf18/0x17d0 [ 45.340417][ T402] addrconf_f6i_alloc+0x265/0x560 [ 45.340565][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.340706][ T402] addrconf_join_anycast+0x1c0/0x220 [ 45.340940][ T402] dev_forward_change+0x2a6/0x7b0 [ 45.341081][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 45.341254][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 45.341398][ T402] proc_sys_call_handler+0x403/0x5e0 [ 45.341630][ T402] vfs_write+0x9e5/0x10a0 [ 45.341790][ T402] ksys_write+0xf5/0x1e0 [ 45.341929][ T402] do_syscall_64+0xc6/0x1e0 [ 45.342069][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.342326][ T402] [ 45.342401][ T402] [ 45.342401][ T402] stack backtrace: [ 45.342578][ T402] CPU: 1 PID: 402 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 45.342795][ T402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 45.343209][ T402] Call Trace: [ 45.343320][ T402] [ 45.343399][ T402] dump_stack_lvl+0x82/0xd0 [ 45.343548][ T402] print_bad_irq_dependency+0x957/0xd40 [ 45.343773][ T402] ? hlock_class+0x4e/0x130 [ 45.343921][ T402] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 45.344092][ T402] ? __pfx_usage_skip+0x10/0x10 [ 45.344226][ T402] ? __bfs+0x246/0x650 [ 45.344417][ T402] ? __pfx_usage_match+0x10/0x10 [ 45.344562][ T402] check_irq_usage+0x596/0x850 [ 45.344700][ T402] ? __pfx_check_irq_usage+0x10/0x10 [ 45.344839][ T402] ? __bfs+0x246/0x650 [ 45.344944][ T402] ? __pfx_hlock_conflict+0x10/0x10 [ 45.345162][ T402] ? check_path.constprop.0+0x24/0x50 [ 45.345304][ T402] ? check_noncircular+0x14c/0x3e0 [ 45.345446][ T402] ? __pfx_check_noncircular+0x10/0x10 [ 45.345594][ T402] ? check_prev_add+0x194/0xce0 [ 45.345822][ T402] check_prev_add+0x194/0xce0 [ 45.345958][ T402] ? validate_chain+0x130/0x9b0 [ 45.346099][ T402] validate_chain+0x71d/0x9b0 [ 45.346244][ T402] ? mark_lock+0x38/0x3e0 [ 45.346347][ T402] ? __pfx_validate_chain+0x10/0x10 [ 45.346574][ T402] ? hlock_class+0x4e/0x130 [ 45.346712][ T402] ? mark_lock+0x38/0x3e0 [ 45.346819][ T402] __lock_acquire+0xaf0/0x1570 [ 45.346972][ T402] lock_acquire.part.0+0xeb/0x330 [ 45.347113][ T402] ? __get_task_comm+0x27/0x70 [ 45.347253][ T402] ? mark_lock+0x38/0x3e0 [ 45.347359][ T402] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 45.347508][ T402] ? trace_lock_acquire+0x135/0x1c0 [ 45.347649][ T402] ? __get_task_comm+0x27/0x70 [ 45.347870][ T402] ? lock_acquire+0x32/0xc0 [ 45.348015][ T402] ? __get_task_comm+0x27/0x70 [ 45.348154][ T402] _raw_spin_lock+0x30/0x40 [ 45.348299][ T402] ? __get_task_comm+0x27/0x70 [ 45.348534][ T402] __get_task_comm+0x27/0x70 [ 45.348678][ T402] ref_tracker_alloc+0x2ee/0x490 [ 45.348823][ T402] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 45.348958][ T402] ? dev_get_by_index+0x177/0x270 [ 45.349178][ T402] ? netdev_get_by_index+0x5e/0x80 [ 45.349314][ T402] ? fib6_nh_init+0x3d8/0x15b0 [ 45.349463][ T402] ? ip6_route_info_create+0xf18/0x17d0 [ 45.349608][ T402] ? addrconf_f6i_alloc+0x265/0x560 [ 45.349826][ T402] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.349967][ T402] ? addrconf_join_anycast+0x1c0/0x220 [ 45.350104][ T402] ? dev_forward_change+0x2a6/0x7b0 [ 45.350246][ T402] ? addrconf_fixup_forwarding+0x23f/0x460 [ 45.350510][ T402] ? addrconf_sysctl_forward+0x212/0x2b0 [ 45.350652][ T402] ? proc_sys_call_handler+0x403/0x5e0 [ 45.350800][ T402] ? vfs_write+0x9e5/0x10a0 [ 45.350948][ T402] ? ksys_write+0xf5/0x1e0 [ 45.351085][ T402] ? do_syscall_64+0xc6/0x1e0 [ 45.351224][ T402] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.351402][ T402] ? dev_get_by_index+0x177/0x270 [ 45.351545][ T402] netdev_get_by_index+0x5e/0x80 [ 45.351683][ T402] fib6_nh_init+0x3d8/0x15b0 [ 45.351912][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 45.352086][ T402] ? __pfx_fib6_nh_init+0x10/0x10 [ 45.352234][ T402] ? kasan_save_track+0x14/0x30 [ 45.352380][ T402] ? __kasan_kmalloc+0x7f/0x90 [ 45.352623][ T402] ? __kmalloc+0x1d7/0x3c0 [ 45.352770][ T402] ? fib6_get_table+0x116/0x290 [ 45.352928][ T402] ip6_route_info_create+0xf18/0x17d0 [ 45.353068][ T402] ? __lock_release+0x103/0x460 [ 45.353208][ T402] ? __pfx_ip6_route_info_create+0x10/0x10 [ 45.353386][ T402] ? addrconf_f6i_alloc+0x12d/0x560 [ 45.353531][ T402] addrconf_f6i_alloc+0x265/0x560 [ 45.353670][ T402] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 45.353904][ T402] ? do_raw_write_lock+0x122/0x3b0 [ 45.354047][ T402] ? __pfx_do_raw_write_lock+0x10/0x10 [ 45.354191][ T402] ? lock_acquire+0x32/0xc0 [ 45.354337][ T402] __ipv6_dev_ac_inc+0x25f/0xb10 [ 45.354571][ T402] addrconf_join_anycast+0x1c0/0x220 [ 45.354753][ T402] ? mark_lock+0x38/0x3e0 [ 45.354879][ T402] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 45.355052][ T402] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 45.355228][ T402] dev_forward_change+0x2a6/0x7b0 [ 45.355372][ T402] ? __pfx_dev_forward_change+0x10/0x10 [ 45.355513][ T402] addrconf_fixup_forwarding+0x23f/0x460 [ 45.355653][ T402] addrconf_sysctl_forward+0x212/0x2b0 [ 45.355881][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.356063][ T402] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 45.356243][ T402] ? trace_kmalloc+0x2a/0xe0 [ 45.356383][ T402] ? __kmalloc_node+0x220/0x400 [ 45.356614][ T402] ? proc_sys_call_handler+0x30b/0x5e0 [ 45.356758][ T402] proc_sys_call_handler+0x403/0x5e0 [ 45.356907][ T402] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 45.357091][ T402] ? __lock_acquire+0xaf0/0x1570 [ 45.357244][ T402] vfs_write+0x9e5/0x10a0 [ 45.357364][ T402] ? do_user_addr_fault+0x449/0xbe0 [ 45.357514][ T402] ? __pfx_vfs_write+0x10/0x10 [ 45.357661][ T402] ? find_held_lock+0x2c/0x110 [ 45.357805][ T402] ? __pfx___lock_release+0x10/0x10 [ 45.358029][ T402] ? __fget_light+0x53/0x1e0 [ 45.358169][ T402] ksys_write+0xf5/0x1e0 [ 45.358274][ T402] ? __pfx_ksys_write+0x10/0x10 [ 45.358421][ T402] ? do_user_addr_fault+0x4bd/0xbe0 [ 45.358648][ T402] do_syscall_64+0xc6/0x1e0 [ 45.358796][ T402] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 45.358976][ T402] RIP: 0033:0x7f9730b8d957 [ 45.359124][ 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 [ 45.359732][ T402] RSP: 002b:00007ffd04f93e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 45.360153][ T402] RAX: ffffffffffffffda RBX: 00005563b0cb2360 RCX: 00007f9730b8d957 [ 45.360360][ T402] RDX: 0000000000000002 RSI: 00005563b0cb23a0 RDI: 0000000000000005 [ 45.360565][ T402] RBP: 00005563b0cb44d0 R08: 0000000000000003 R09: 0000000000000077 [ 45.360855][ T402] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 45.361059][ T402] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f9730c449c0 [ 45.361273][ T402]