[ 24.817886][ T237] ip (237) used greatest stack depth: 24240 bytes left [ 31.158407][ T311] gre: GRE over IPv4 demultiplexor driver [ 31.188331][ T311] ip_gre: GRE over IPv4 tunneling driver [ 33.390482][ T333] 8021q: 802.1Q VLAN Support v1.8 [ 37.583049][ T371] GACT probability NOT on [ 37.603297][ T369] tc (369) used greatest stack depth: 23288 bytes left [ 41.429057][ T404] [ 41.429202][ T404] ===================================================== [ 41.429414][ T404] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 41.429663][ T404] 6.9.0-rc1-virtme #1 Not tainted [ 41.429833][ T404] ----------------------------------------------------- [ 41.430040][ T404] sysctl/404 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 41.430286][ T404] ffff8880233dcee8 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 41.430598][ T404] [ 41.430598][ T404] and this task is already holding: [ 41.430859][ T404] ffff888005505580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.431113][ T404] which would create a new lock dependency: [ 41.431287][ T404] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 41.431502][ T404] [ 41.431502][ T404] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 41.431752][ T404] (&ndev->lock){++--}-{2:2} [ 41.431756][ T404] [ 41.431756][ T404] ... which became SOFTIRQ-irq-safe at: [ 41.432106][ T404] __lock_acquire+0x797/0x1570 [ 41.432269][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.432418][ T404] _raw_write_lock+0x30/0x40 [ 41.432578][ T404] addrconf_rs_timer+0xa9/0x730 [ 41.432717][ T404] call_timer_fn+0x13b/0x230 [ 41.432864][ T404] __run_timers+0x545/0x810 [ 41.433014][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.433158][ T404] __do_softirq+0x1f8/0x5df [ 41.433300][ T404] irq_exit_rcu+0x97/0xc0 [ 41.433449][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.433593][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.433783][ T404] orc_find.part.0+0xad/0x370 [ 41.433974][ T404] unwind_next_frame+0x1d2/0x1d00 [ 41.434157][ T404] arch_stack_walk+0x8c/0xf0 [ 41.434338][ T404] stack_trace_save+0x94/0xd0 [ 41.434510][ T404] kasan_save_stack+0x24/0x50 [ 41.434676][ T404] kasan_save_track+0x14/0x30 [ 41.434839][ T404] __kasan_slab_alloc+0x59/0x70 [ 41.435002][ T404] kmem_cache_alloc+0xef/0x270 [ 41.435168][ T404] __alloc_object+0x39/0x6f0 [ 41.435333][ T404] __create_object+0x22/0xb0 [ 41.435523][ T404] kmem_cache_alloc+0x208/0x270 [ 41.435700][ T404] p9_tag_alloc+0x99/0x700 [ 41.435876][ T404] p9_client_prepare_req+0xe6/0x290 [ 41.436041][ T404] p9_client_rpc+0x18d/0x930 [ 41.436205][ T404] p9_client_walk+0x1b0/0x650 [ 41.436373][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 41.436540][ T404] __lookup_slow+0x209/0x3c0 [ 41.436705][ T404] walk_component+0x2ab/0x4f0 [ 41.436872][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 41.437078][ T404] path_openat+0x1be/0x440 [ 41.437242][ T404] do_filp_open+0x1b3/0x3e0 [ 41.437415][ T404] do_sys_openat2+0x122/0x160 [ 41.437579][ T404] __x64_sys_openat+0x123/0x1e0 [ 41.437746][ T404] do_syscall_64+0xc6/0x1e0 [ 41.437911][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.438119][ T404] [ 41.438119][ T404] to a SOFTIRQ-irq-unsafe lock: [ 41.438321][ T404] (&p->alloc_lock){+.+.}-{2:2} [ 41.438327][ T404] [ 41.438327][ T404] ... which became SOFTIRQ-irq-unsafe at: [ 41.438752][ T404] ... [ 41.438753][ T404] __lock_acquire+0x797/0x1570 [ 41.439005][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.439170][ T404] _raw_spin_lock+0x30/0x40 [ 41.439340][ T404] set_mems_allowed+0x1d/0x210 [ 41.439504][ T404] kernel_init_freeable+0x72/0x310 [ 41.439670][ T404] kernel_init+0x20/0x200 [ 41.439838][ T404] ret_from_fork+0x31/0x70 [ 41.440003][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.440172][ T404] [ 41.440172][ T404] other info that might help us debug this: [ 41.440172][ T404] [ 41.440486][ T404] Possible interrupt unsafe locking scenario: [ 41.440486][ T404] [ 41.440728][ T404] CPU0 CPU1 [ 41.440893][ T404] ---- ---- [ 41.441054][ T404] lock(&p->alloc_lock); [ 41.441183][ T404] local_irq_disable(); [ 41.441391][ T404] lock(&ndev->lock); [ 41.441598][ T404] lock(&p->alloc_lock); [ 41.441798][ T404] [ 41.441922][ T404] lock(&ndev->lock); [ 41.442045][ T404] [ 41.442045][ T404] *** DEADLOCK *** [ 41.442045][ T404] [ 41.442283][ T404] 3 locks held by sysctl/404: [ 41.442445][ T404] #0: ffff88802316c3f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 41.442752][ T404] #1: ffffffff94d969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 41.443079][ T404] #2: ffff888005505580 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 41.443388][ T404] [ 41.443388][ T404] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 41.443662][ T404] -> (&ndev->lock){++--}-{2:2} { [ 41.443842][ T404] HARDIRQ-ON-W at: [ 41.443956][ T404] __lock_acquire+0x797/0x1570 [ 41.444144][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.444325][ T404] _raw_write_lock_bh+0x38/0x50 [ 41.444503][ T404] addrconf_permanent_addr+0x6e/0x670 [ 41.444680][ T404] addrconf_notify+0x749/0xd60 [ 41.444872][ T404] notifier_call_chain+0xcd/0x150 [ 41.445059][ T404] __dev_notify_flags+0xe6/0x250 [ 41.445243][ T404] dev_change_flags+0xec/0x160 [ 41.445423][ T404] do_setlink+0x7d6/0x21e0 [ 41.445607][ T404] __rtnl_newlink+0xaa7/0xd80 [ 41.445795][ T404] rtnl_newlink+0x63/0xa0 [ 41.445974][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.446163][ T404] netlink_rcv_skb+0x130/0x360 [ 41.446352][ T404] netlink_unicast+0x449/0x710 [ 41.446544][ T404] netlink_sendmsg+0x723/0xbe0 [ 41.446734][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 41.446935][ T404] ___sys_sendmsg+0xee/0x170 [ 41.447124][ T404] __sys_sendmsg+0xcd/0x170 [ 41.447315][ T404] do_syscall_64+0xc6/0x1e0 [ 41.447511][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.447739][ T404] HARDIRQ-ON-R at: [ 41.447856][ T404] __lock_acquire+0x797/0x1570 [ 41.448046][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.448234][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.448421][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.448611][ T404] inet6_fill_link_af+0x5e/0xe0 [ 41.448804][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.448994][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.449183][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.449410][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 41.449595][ T404] register_netdevice+0x1177/0x1690 [ 41.449787][ T404] register_netdev+0x20/0x40 [ 41.449977][ T404] sit_init_net+0x250/0x4f0 [ 41.450169][ T404] ops_init+0x9b/0x560 [ 41.450323][ T404] register_pernet_operations+0x2db/0x710 [ 41.450551][ T404] register_pernet_device+0x2a/0x60 [ 41.450740][ T404] sit_init+0x23/0xe0 [ 41.450894][ T404] do_one_initcall+0x8d/0x1e0 [ 41.451093][ T404] do_initcalls+0x1b2/0x3e0 [ 41.451281][ T404] kernel_init_freeable+0x232/0x310 [ 41.451471][ T404] kernel_init+0x20/0x200 [ 41.451662][ T404] ret_from_fork+0x31/0x70 [ 41.451852][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.452045][ T404] IN-SOFTIRQ-W at: [ 41.452160][ T404] __lock_acquire+0x797/0x1570 [ 41.452357][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.452631][ T404] _raw_write_lock+0x30/0x40 [ 41.452821][ T404] addrconf_rs_timer+0xa9/0x730 [ 41.453008][ T404] call_timer_fn+0x13b/0x230 [ 41.453293][ T404] __run_timers+0x545/0x810 [ 41.453483][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.453678][ T404] __do_softirq+0x1f8/0x5df [ 41.453961][ T404] irq_exit_rcu+0x97/0xc0 [ 41.454157][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.454383][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.454690][ T404] orc_find.part.0+0xad/0x370 [ 41.454882][ T404] unwind_next_frame+0x1d2/0x1d00 [ 41.455076][ T404] arch_stack_walk+0x8c/0xf0 [ 41.455265][ T404] stack_trace_save+0x94/0xd0 [ 41.455540][ T404] kasan_save_stack+0x24/0x50 [ 41.455730][ T404] kasan_save_track+0x14/0x30 [ 41.455918][ T404] __kasan_slab_alloc+0x59/0x70 [ 41.456105][ T404] kmem_cache_alloc+0xef/0x270 [ 41.456296][ T404] __alloc_object+0x39/0x6f0 [ 41.456493][ T404] __create_object+0x22/0xb0 [ 41.456684][ T404] kmem_cache_alloc+0x208/0x270 [ 41.456956][ T404] p9_tag_alloc+0x99/0x700 [ 41.457147][ T404] p9_client_prepare_req+0xe6/0x290 [ 41.457336][ T404] p9_client_rpc+0x18d/0x930 [ 41.457605][ T404] p9_client_walk+0x1b0/0x650 [ 41.457793][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 41.457976][ T404] __lookup_slow+0x209/0x3c0 [ 41.458239][ T404] walk_component+0x2ab/0x4f0 [ 41.458420][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 41.458631][ T404] path_openat+0x1be/0x440 [ 41.458807][ T404] do_filp_open+0x1b3/0x3e0 [ 41.458982][ T404] do_sys_openat2+0x122/0x160 [ 41.459160][ T404] __x64_sys_openat+0x123/0x1e0 [ 41.459348][ T404] do_syscall_64+0xc6/0x1e0 [ 41.459624][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.459851][ T404] IN-SOFTIRQ-R at: [ 41.459965][ T404] __lock_acquire+0x797/0x1570 [ 41.460153][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.460423][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.460600][ T404] ipv6_get_lladdr+0xa9/0x3e0 [ 41.460774][ T404] addrconf_rs_timer+0x24a/0x730 [ 41.460949][ T404] call_timer_fn+0x13b/0x230 [ 41.461128][ T404] __run_timers+0x545/0x810 [ 41.461307][ T404] run_timer_softirq+0xe8/0x1b0 [ 41.461565][ T404] __do_softirq+0x1f8/0x5df [ 41.461745][ T404] irq_exit_rcu+0x97/0xc0 [ 41.461920][ T404] sysvec_apic_timer_interrupt+0x75/0x80 [ 41.462136][ T404] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 41.462519][ T404] orc_find.part.0+0xad/0x370 [ 41.462693][ T404] unwind_next_frame+0x1d2/0x1d00 [ 41.462871][ T404] arch_stack_walk+0x8c/0xf0 [ 41.463047][ T404] stack_trace_save+0x94/0xd0 [ 41.463221][ T404] kasan_save_stack+0x24/0x50 [ 41.463392][ T404] kasan_save_track+0x14/0x30 [ 41.463647][ T404] __kasan_slab_alloc+0x59/0x70 [ 41.463837][ T404] kmem_cache_alloc+0xef/0x270 [ 41.464012][ T404] __alloc_object+0x39/0x6f0 [ 41.464203][ T404] __create_object+0x22/0xb0 [ 41.464468][ T404] kmem_cache_alloc+0x208/0x270 [ 41.464642][ T404] p9_tag_alloc+0x99/0x700 [ 41.464821][ T404] p9_client_prepare_req+0xe6/0x290 [ 41.465001][ T404] p9_client_rpc+0x18d/0x930 [ 41.465172][ T404] p9_client_walk+0x1b0/0x650 [ 41.465346][ T404] v9fs_vfs_lookup.part.0+0x12f/0x390 [ 41.465625][ T404] __lookup_slow+0x209/0x3c0 [ 41.465804][ T404] walk_component+0x2ab/0x4f0 [ 41.465983][ T404] link_path_walk.part.0.constprop.0+0x56a/0x9f0 [ 41.466193][ T404] path_openat+0x1be/0x440 [ 41.466456][ T404] do_filp_open+0x1b3/0x3e0 [ 41.466628][ T404] do_sys_openat2+0x122/0x160 [ 41.466815][ T404] __x64_sys_openat+0x123/0x1e0 [ 41.466988][ T404] do_syscall_64+0xc6/0x1e0 [ 41.467163][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.467390][ T404] INITIAL USE at: [ 41.467503][ T404] __lock_acquire+0x797/0x1570 [ 41.467775][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.467976][ T404] _raw_write_lock_bh+0x38/0x50 [ 41.468177][ T404] addrconf_permanent_addr+0x6e/0x670 [ 41.468445][ T404] addrconf_notify+0x749/0xd60 [ 41.468634][ T404] notifier_call_chain+0xcd/0x150 [ 41.468824][ T404] __dev_notify_flags+0xe6/0x250 [ 41.469091][ T404] dev_change_flags+0xec/0x160 [ 41.469278][ T404] do_setlink+0x7d6/0x21e0 [ 41.469465][ T404] __rtnl_newlink+0xaa7/0xd80 [ 41.469637][ T404] rtnl_newlink+0x63/0xa0 [ 41.469895][ T404] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 41.470067][ T404] netlink_rcv_skb+0x130/0x360 [ 41.470242][ T404] netlink_unicast+0x449/0x710 [ 41.470499][ T404] netlink_sendmsg+0x723/0xbe0 [ 41.470671][ T404] ____sys_sendmsg+0x7b2/0xa10 [ 41.470850][ T404] ___sys_sendmsg+0xee/0x170 [ 41.471025][ T404] __sys_sendmsg+0xcd/0x170 [ 41.471282][ T404] do_syscall_64+0xc6/0x1e0 [ 41.471460][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.471675][ T404] INITIAL READ USE at: [ 41.471866][ T404] __lock_acquire+0x797/0x1570 [ 41.472038][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.472219][ T404] _raw_read_lock_bh+0x44/0x80 [ 41.472391][ T404] inet6_fill_ifla6_attrs+0x516/0x740 [ 41.472688][ T404] inet6_fill_link_af+0x5e/0xe0 [ 41.472861][ T404] rtnl_fill_ifinfo+0x1612/0x29e0 [ 41.473033][ T404] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 41.473408][ T404] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 41.473621][ T404] rtmsg_ifinfo+0x5b/0xa0 [ 41.473804][ T404] register_netdevice+0x1177/0x1690 [ 41.474017][ T404] register_netdev+0x20/0x40 [ 41.474191][ T404] sit_init_net+0x250/0x4f0 [ 41.474366][ T404] ops_init+0x9b/0x560 [ 41.474624][ T404] register_pernet_operations+0x2db/0x710 [ 41.474834][ T404] register_pernet_device+0x2a/0x60 [ 41.475043][ T404] sit_init+0x23/0xe0 [ 41.475306][ T404] do_one_initcall+0x8d/0x1e0 [ 41.475495][ T404] do_initcalls+0x1b2/0x3e0 [ 41.475671][ T404] kernel_init_freeable+0x232/0x310 [ 41.475882][ T404] kernel_init+0x20/0x200 [ 41.476053][ T404] ret_from_fork+0x31/0x70 [ 41.476233][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.476408][ T404] } [ 41.476561][ T404] ... key at: [] __key.37+0x0/0x40 [ 41.476843][ T404] [ 41.476843][ T404] the dependencies between the lock to be acquired [ 41.476845][ T404] and SOFTIRQ-irq-unsafe lock: [ 41.477367][ T404] -> (&p->alloc_lock){+.+.}-{2:2} { [ 41.477536][ T404] HARDIRQ-ON-W at: [ 41.477663][ T404] __lock_acquire+0x797/0x1570 [ 41.477871][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.478079][ T404] _raw_spin_lock+0x30/0x40 [ 41.478285][ T404] set_mems_allowed+0x1d/0x210 [ 41.478489][ T404] kernel_init_freeable+0x72/0x310 [ 41.478695][ T404] kernel_init+0x20/0x200 [ 41.478982][ T404] ret_from_fork+0x31/0x70 [ 41.479191][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.479394][ T404] SOFTIRQ-ON-W at: [ 41.479597][ T404] __lock_acquire+0x797/0x1570 [ 41.479804][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.480007][ T404] _raw_spin_lock+0x30/0x40 [ 41.480217][ T404] set_mems_allowed+0x1d/0x210 [ 41.480503][ T404] kernel_init_freeable+0x72/0x310 [ 41.480705][ T404] kernel_init+0x20/0x200 [ 41.480906][ T404] ret_from_fork+0x31/0x70 [ 41.481190][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.481398][ T404] INITIAL USE at: [ 41.481521][ T404] __lock_acquire+0x797/0x1570 [ 41.481726][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.482013][ T404] _raw_spin_lock+0x30/0x40 [ 41.482216][ T404] set_mems_allowed+0x1d/0x210 [ 41.482419][ T404] kernel_init_freeable+0x72/0x310 [ 41.482705][ T404] kernel_init+0x20/0x200 [ 41.482907][ T404] ret_from_fork+0x31/0x70 [ 41.483113][ T404] ret_from_fork_asm+0x1a/0x30 [ 41.483315][ T404] } [ 41.483481][ T404] ... key at: [] __key.387+0x0/0x40 [ 41.483728][ T404] ... acquired at: [ 41.483956][ T404] check_prev_add+0x194/0xce0 [ 41.484123][ T404] validate_chain+0x71d/0x9b0 [ 41.484364][ T404] __lock_acquire+0xaf0/0x1570 [ 41.484527][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.484693][ T404] _raw_spin_lock+0x30/0x40 [ 41.484861][ T404] __get_task_comm+0x27/0x70 [ 41.485024][ T404] ref_tracker_alloc+0x2ee/0x490 [ 41.485348][ T404] netdev_get_by_index+0x5e/0x80 [ 41.485512][ T404] fib6_nh_init+0x3d8/0x15b0 [ 41.485677][ T404] ip6_route_info_create+0xf18/0x17d0 [ 41.485839][ T404] addrconf_f6i_alloc+0x265/0x560 [ 41.486002][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.486177][ T404] addrconf_join_anycast+0x1c0/0x220 [ 41.486341][ T404] dev_forward_change+0x2a6/0x7b0 [ 41.486505][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 41.486787][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 41.486953][ T404] proc_sys_call_handler+0x403/0x5e0 [ 41.487119][ T404] vfs_write+0x9e5/0x10a0 [ 41.487290][ T404] ksys_write+0xf5/0x1e0 [ 41.487531][ T404] do_syscall_64+0xc6/0x1e0 [ 41.487701][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.487902][ T404] [ 41.487986][ T404] [ 41.487986][ T404] stack backtrace: [ 41.488264][ T404] CPU: 3 PID: 404 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 41.488516][ T404] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 41.488878][ T404] Call Trace: [ 41.489005][ T404] [ 41.489091][ T404] dump_stack_lvl+0x82/0xd0 [ 41.489259][ T404] print_bad_irq_dependency+0x957/0xd40 [ 41.489429][ T404] ? hlock_class+0x4e/0x130 [ 41.489595][ T404] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 41.489878][ T404] ? __pfx_usage_skip+0x10/0x10 [ 41.490041][ T404] ? __bfs+0x246/0x650 [ 41.490163][ T404] ? __pfx_usage_match+0x10/0x10 [ 41.490326][ T404] check_irq_usage+0x596/0x850 [ 41.490579][ T404] ? __pfx_check_irq_usage+0x10/0x10 [ 41.490742][ T404] ? __bfs+0x246/0x650 [ 41.490865][ T404] ? __pfx_hlock_conflict+0x10/0x10 [ 41.491027][ T404] ? check_path.constprop.0+0x24/0x50 [ 41.491190][ T404] ? check_noncircular+0x14c/0x3e0 [ 41.491437][ T404] ? __pfx_check_noncircular+0x10/0x10 [ 41.491604][ T404] ? check_prev_add+0x194/0xce0 [ 41.491773][ T404] check_prev_add+0x194/0xce0 [ 41.491938][ T404] ? validate_chain+0x130/0x9b0 [ 41.492104][ T404] validate_chain+0x71d/0x9b0 [ 41.492268][ T404] ? mark_lock+0x38/0x3e0 [ 41.492391][ T404] ? __pfx_validate_chain+0x10/0x10 [ 41.492552][ T404] ? hlock_class+0x4e/0x130 [ 41.492799][ T404] ? mark_lock+0x38/0x3e0 [ 41.492924][ T404] __lock_acquire+0xaf0/0x1570 [ 41.493088][ T404] lock_acquire.part.0+0xeb/0x330 [ 41.493250][ T404] ? __get_task_comm+0x27/0x70 [ 41.493415][ T404] ? mark_lock+0x38/0x3e0 [ 41.493617][ T404] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 41.493790][ T404] ? trace_lock_acquire+0x135/0x1c0 [ 41.493968][ T404] ? __get_task_comm+0x27/0x70 [ 41.494130][ T404] ? lock_acquire+0x32/0xc0 [ 41.494372][ T404] ? __get_task_comm+0x27/0x70 [ 41.494535][ T404] _raw_spin_lock+0x30/0x40 [ 41.494697][ T404] ? __get_task_comm+0x27/0x70 [ 41.494857][ T404] __get_task_comm+0x27/0x70 [ 41.495026][ T404] ref_tracker_alloc+0x2ee/0x490 [ 41.495269][ T404] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 41.495429][ T404] ? dev_get_by_index+0x177/0x270 [ 41.495592][ T404] ? netdev_get_by_index+0x5e/0x80 [ 41.495756][ T404] ? fib6_nh_init+0x3d8/0x15b0 [ 41.496004][ T404] ? ip6_route_info_create+0xf18/0x17d0 [ 41.496166][ T404] ? addrconf_f6i_alloc+0x265/0x560 [ 41.496335][ T404] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.496500][ T404] ? addrconf_join_anycast+0x1c0/0x220 [ 41.496741][ T404] ? dev_forward_change+0x2a6/0x7b0 [ 41.496904][ T404] ? addrconf_fixup_forwarding+0x23f/0x460 [ 41.497105][ T404] ? addrconf_sysctl_forward+0x212/0x2b0 [ 41.497267][ T404] ? proc_sys_call_handler+0x403/0x5e0 [ 41.497598][ T404] ? vfs_write+0x9e5/0x10a0 [ 41.497760][ T404] ? ksys_write+0xf5/0x1e0 [ 41.497923][ T404] ? do_syscall_64+0xc6/0x1e0 [ 41.498085][ T404] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.498369][ T404] ? dev_get_by_index+0x177/0x270 [ 41.498533][ T404] netdev_get_by_index+0x5e/0x80 [ 41.498705][ T404] fib6_nh_init+0x3d8/0x15b0 [ 41.498868][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 41.499070][ T404] ? __pfx_fib6_nh_init+0x10/0x10 [ 41.499230][ T404] ? kasan_save_track+0x14/0x30 [ 41.499399][ T404] ? __kasan_kmalloc+0x7f/0x90 [ 41.499562][ T404] ? __kmalloc+0x1d7/0x3c0 [ 41.499810][ T404] ? fib6_get_table+0x116/0x290 [ 41.499974][ T404] ip6_route_info_create+0xf18/0x17d0 [ 41.500143][ T404] ? __lock_release+0x103/0x460 [ 41.500307][ T404] ? __pfx_ip6_route_info_create+0x10/0x10 [ 41.500588][ T404] ? addrconf_f6i_alloc+0x12d/0x560 [ 41.500749][ T404] addrconf_f6i_alloc+0x265/0x560 [ 41.500922][ T404] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 41.501091][ T404] ? do_raw_write_lock+0x122/0x3b0 [ 41.501254][ T404] ? __pfx_do_raw_write_lock+0x10/0x10 [ 41.501494][ T404] ? lock_acquire+0x32/0xc0 [ 41.501658][ T404] __ipv6_dev_ac_inc+0x25f/0xb10 [ 41.501821][ T404] addrconf_join_anycast+0x1c0/0x220 [ 41.501985][ T404] ? mark_lock+0x38/0x3e0 [ 41.502189][ T404] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 41.502394][ T404] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 41.502596][ T404] dev_forward_change+0x2a6/0x7b0 [ 41.502758][ T404] ? __pfx_dev_forward_change+0x10/0x10 [ 41.503003][ T404] addrconf_fixup_forwarding+0x23f/0x460 [ 41.503169][ T404] addrconf_sysctl_forward+0x212/0x2b0 [ 41.503332][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.503534][ T404] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 41.503844][ T404] ? trace_kmalloc+0x2a/0xe0 [ 41.504014][ T404] ? __kmalloc_node+0x220/0x400 [ 41.504189][ T404] ? proc_sys_call_handler+0x30b/0x5e0 [ 41.504356][ T404] proc_sys_call_handler+0x403/0x5e0 [ 41.504600][ T404] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 41.504799][ T404] ? __lock_acquire+0xaf0/0x1570 [ 41.504962][ T404] vfs_write+0x9e5/0x10a0 [ 41.505084][ T404] ? do_user_addr_fault+0x449/0xbe0 [ 41.505340][ T404] ? __pfx_vfs_write+0x10/0x10 [ 41.505508][ T404] ? find_held_lock+0x2c/0x110 [ 41.505671][ T404] ? __pfx___lock_release+0x10/0x10 [ 41.505834][ T404] ? __fget_light+0x53/0x1e0 [ 41.505998][ T404] ksys_write+0xf5/0x1e0 [ 41.506122][ T404] ? __pfx_ksys_write+0x10/0x10 [ 41.506284][ T404] ? do_user_addr_fault+0x4bd/0xbe0 [ 41.506450][ T404] do_syscall_64+0xc6/0x1e0 [ 41.506611][ T404] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 41.506894][ T404] RIP: 0033:0x7fba21732957 [ 41.507066][ 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 [ 41.507720][ T404] RSP: 002b:00007ffd6b6e4be8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 41.507965][ T404] RAX: ffffffffffffffda RBX: 0000558127fbe360 RCX: 00007fba21732957 [ 41.508210][ T404] RDX: 0000000000000002 RSI: 0000558127fbe3a0 RDI: 0000000000000005 [ 41.508539][ T404] RBP: 0000558127fc04d0 R08: 0000000000000003 R09: 0000000000000077 [ 41.508783][ T404] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 41.509025][ T404] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fba217e99c0 [ 41.509270][ T404]