[ 28.530869][ T295] 8021q: 802.1Q VLAN Support v1.8 [ 29.608859][ T306] gre: GRE over IPv4 demultiplexor driver [ 29.630482][ T306] ip_gre: GRE over IPv4 tunneling driver [ 36.677976][ T372] GACT probability NOT on [ 38.478620][ T388] [ 38.478728][ T388] ===================================================== [ 38.478901][ T388] WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected [ 38.479107][ T388] 6.9.0-rc1-virtme #1 Not tainted [ 38.479249][ T388] ----------------------------------------------------- [ 38.479427][ T388] sysctl/388 [HC0[0]:SC0[2]:HE1:SE0] is trying to acquire: [ 38.479636][ T388] ffff888007f88968 (&p->alloc_lock){+.+.}-{2:2}, at: __get_task_comm+0x27/0x70 [ 38.479890][ T388] [ 38.479890][ T388] and this task is already holding: [ 38.480117][ T388] ffff888003fdbd80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.480375][ T388] which would create a new lock dependency: [ 38.480556][ T388] (&ndev->lock){++--}-{2:2} -> (&p->alloc_lock){+.+.}-{2:2} [ 38.480772][ T388] [ 38.480772][ T388] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 38.481007][ T388] (&ndev->lock){++--}-{2:2} [ 38.481011][ T388] [ 38.481011][ T388] ... which became SOFTIRQ-irq-safe at: [ 38.481355][ T388] __lock_acquire+0x797/0x1570 [ 38.481498][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.481644][ T388] _raw_write_lock+0x30/0x40 [ 38.481785][ T388] addrconf_rs_timer+0xa9/0x730 [ 38.481923][ T388] call_timer_fn+0x13b/0x230 [ 38.482063][ T388] __run_timers+0x545/0x810 [ 38.482226][ T388] timer_expire_remote+0x9b/0xe0 [ 38.482365][ T388] tmigr_handle_remote_cpu+0x270/0x430 [ 38.482503][ T388] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.482643][ T388] tmigr_handle_remote+0x21d/0x3a0 [ 38.482784][ T388] __do_softirq+0x1f8/0x5df [ 38.482925][ T388] irq_exit_rcu+0x97/0xc0 [ 38.483065][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.483205][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.483388][ T388] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.483527][ T388] get_partial_node.part.0+0x1c5/0x3a0 [ 38.483670][ T388] ___slab_alloc+0xb70/0x10a0 [ 38.483811][ T388] __kmalloc+0x34c/0x3c0 [ 38.483919][ T388] p9_fcall_init+0x7d/0x1b0 [ 38.484061][ T388] p9_tag_alloc+0x1bd/0x700 [ 38.484199][ T388] p9_client_prepare_req+0xe6/0x290 [ 38.484344][ T388] p9_client_rpc+0x18d/0x930 [ 38.484487][ T388] p9_client_clunk+0x74/0xe0 [ 38.484622][ T388] v9fs_dentry_release+0xb9/0x140 [ 38.484765][ T388] __dentry_kill+0x1d9/0x4f0 [ 38.484906][ T388] dput.part.0+0x333/0x6c0 [ 38.485050][ T388] walk_component+0x199/0x4f0 [ 38.485194][ T388] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.485374][ T388] path_openat+0x1be/0x440 [ 38.485513][ T388] do_filp_open+0x1b3/0x3e0 [ 38.485651][ T388] do_sys_openat2+0x122/0x160 [ 38.485789][ T388] __x64_sys_openat+0x123/0x1e0 [ 38.485931][ T388] do_syscall_64+0xc6/0x1e0 [ 38.486072][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.486273][ T388] [ 38.486273][ T388] to a SOFTIRQ-irq-unsafe lock: [ 38.486450][ T388] (&p->alloc_lock){+.+.}-{2:2} [ 38.486455][ T388] [ 38.486455][ T388] ... which became SOFTIRQ-irq-unsafe at: [ 38.486792][ T388] ... [ 38.486793][ T388] __lock_acquire+0x797/0x1570 [ 38.487003][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.487141][ T388] _raw_spin_lock+0x30/0x40 [ 38.487279][ T388] set_mems_allowed+0x1d/0x210 [ 38.487419][ T388] kernel_init_freeable+0x72/0x310 [ 38.487562][ T388] kernel_init+0x20/0x200 [ 38.487702][ T388] ret_from_fork+0x31/0x70 [ 38.487841][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.487981][ T388] [ 38.487981][ T388] other info that might help us debug this: [ 38.487981][ T388] [ 38.488255][ T388] Possible interrupt unsafe locking scenario: [ 38.488255][ T388] [ 38.488465][ T388] CPU0 CPU1 [ 38.488604][ T388] ---- ---- [ 38.488748][ T388] lock(&p->alloc_lock); [ 38.488853][ T388] local_irq_disable(); [ 38.489022][ T388] lock(&ndev->lock); [ 38.489197][ T388] lock(&p->alloc_lock); [ 38.489372][ T388] [ 38.489476][ T388] lock(&ndev->lock); [ 38.489583][ T388] [ 38.489583][ T388] *** DEADLOCK *** [ 38.489583][ T388] [ 38.489790][ T388] 3 locks held by sysctl/388: [ 38.489929][ T388] #0: ffff88800eaf93f0 (sb_writers#7){.+.+}-{0:0}, at: ksys_write+0xf5/0x1e0 [ 38.490199][ T388] #1: ffffffffaed969c8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_fixup_forwarding+0x20/0x460 [ 38.490505][ T388] #2: ffff888003fdbd80 (&ndev->lock){++--}-{2:2}, at: __ipv6_dev_ac_inc+0x42/0xb10 [ 38.490753][ T388] [ 38.490753][ T388] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 38.491027][ T388] -> (&ndev->lock){++--}-{2:2} { [ 38.491171][ T388] HARDIRQ-ON-W at: [ 38.491280][ T388] __lock_acquire+0x797/0x1570 [ 38.491458][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.491636][ T388] _raw_write_lock_bh+0x38/0x50 [ 38.491813][ T388] addrconf_permanent_addr+0x6e/0x670 [ 38.491993][ T388] addrconf_notify+0x749/0xd60 [ 38.492170][ T388] notifier_call_chain+0xcd/0x150 [ 38.492346][ T388] __dev_notify_flags+0xe6/0x250 [ 38.492521][ T388] dev_change_flags+0xec/0x160 [ 38.492694][ T388] do_setlink+0x7d6/0x21e0 [ 38.492871][ T388] __rtnl_newlink+0xaa7/0xd80 [ 38.493055][ T388] rtnl_newlink+0x63/0xa0 [ 38.493234][ T388] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.493416][ T388] netlink_rcv_skb+0x130/0x360 [ 38.493592][ T388] netlink_unicast+0x449/0x710 [ 38.493767][ T388] netlink_sendmsg+0x723/0xbe0 [ 38.493943][ T388] ____sys_sendmsg+0x7b2/0xa10 [ 38.494142][ T388] ___sys_sendmsg+0xee/0x170 [ 38.494335][ T388] __sys_sendmsg+0xcd/0x170 [ 38.494520][ T388] do_syscall_64+0xc6/0x1e0 [ 38.494697][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.494908][ T388] HARDIRQ-ON-R at: [ 38.495018][ T388] __lock_acquire+0x797/0x1570 [ 38.495193][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.495375][ T388] _raw_read_lock_bh+0x44/0x80 [ 38.495557][ T388] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.495744][ T388] inet6_fill_link_af+0x5e/0xe0 [ 38.495936][ T388] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.496129][ T388] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.496318][ T388] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.496551][ T388] rtmsg_ifinfo+0x5b/0xa0 [ 38.496742][ T388] register_netdevice+0x1177/0x1690 [ 38.496932][ T388] register_netdev+0x20/0x40 [ 38.497124][ T388] sit_init_net+0x250/0x4f0 [ 38.497317][ T388] ops_init+0x9b/0x560 [ 38.497471][ T388] register_pernet_operations+0x2db/0x710 [ 38.497702][ T388] register_pernet_device+0x2a/0x60 [ 38.497899][ T388] sit_init+0x23/0xe0 [ 38.498055][ T388] do_one_initcall+0x8d/0x1e0 [ 38.498267][ T388] do_initcalls+0x1b2/0x3e0 [ 38.498459][ T388] kernel_init_freeable+0x232/0x310 [ 38.498655][ T388] kernel_init+0x20/0x200 [ 38.498848][ T388] ret_from_fork+0x31/0x70 [ 38.499047][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.499244][ T388] IN-SOFTIRQ-W at: [ 38.499360][ T388] __lock_acquire+0x797/0x1570 [ 38.499552][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.499742][ T388] _raw_write_lock+0x30/0x40 [ 38.499939][ T388] addrconf_rs_timer+0xa9/0x730 [ 38.500115][ T388] call_timer_fn+0x13b/0x230 [ 38.500300][ T388] __run_timers+0x545/0x810 [ 38.500491][ T388] timer_expire_remote+0x9b/0xe0 [ 38.500667][ T388] tmigr_handle_remote_cpu+0x270/0x430 [ 38.500847][ T388] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.501024][ T388] tmigr_handle_remote+0x21d/0x3a0 [ 38.501200][ T388] __do_softirq+0x1f8/0x5df [ 38.501388][ T388] irq_exit_rcu+0x97/0xc0 [ 38.501565][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.501867][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.502083][ T388] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.502313][ T388] get_partial_node.part.0+0x1c5/0x3a0 [ 38.502577][ T388] ___slab_alloc+0xb70/0x10a0 [ 38.502760][ T388] __kmalloc+0x34c/0x3c0 [ 38.502937][ T388] p9_fcall_init+0x7d/0x1b0 [ 38.503196][ T388] p9_tag_alloc+0x1bd/0x700 [ 38.503372][ T388] p9_client_prepare_req+0xe6/0x290 [ 38.503548][ T388] p9_client_rpc+0x18d/0x930 [ 38.503726][ T388] p9_client_clunk+0x74/0xe0 [ 38.503983][ T388] v9fs_dentry_release+0xb9/0x140 [ 38.504167][ T388] __dentry_kill+0x1d9/0x4f0 [ 38.504344][ T388] dput.part.0+0x333/0x6c0 [ 38.504606][ T388] walk_component+0x199/0x4f0 [ 38.504784][ T388] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.504992][ T388] path_openat+0x1be/0x440 [ 38.505248][ T388] do_filp_open+0x1b3/0x3e0 [ 38.505428][ T388] do_sys_openat2+0x122/0x160 [ 38.505605][ T388] __x64_sys_openat+0x123/0x1e0 [ 38.505778][ T388] do_syscall_64+0xc6/0x1e0 [ 38.506033][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.506268][ T388] IN-SOFTIRQ-R at: [ 38.506375][ T388] __lock_acquire+0x797/0x1570 [ 38.506630][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.506809][ T388] _raw_read_lock_bh+0x44/0x80 [ 38.506985][ T388] ipv6_get_lladdr+0xa9/0x3e0 [ 38.507158][ T388] addrconf_rs_timer+0x24a/0x730 [ 38.507416][ T388] call_timer_fn+0x13b/0x230 [ 38.507595][ T388] __run_timers+0x545/0x810 [ 38.507771][ T388] timer_expire_remote+0x9b/0xe0 [ 38.508038][ T388] tmigr_handle_remote_cpu+0x270/0x430 [ 38.508223][ T388] tmigr_handle_remote_up+0x19f/0x2e0 [ 38.508402][ T388] tmigr_handle_remote+0x21d/0x3a0 [ 38.508585][ T388] __do_softirq+0x1f8/0x5df [ 38.508761][ T388] irq_exit_rcu+0x97/0xc0 [ 38.508936][ T388] sysvec_apic_timer_interrupt+0x75/0x80 [ 38.509151][ T388] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 38.509366][ T388] _raw_spin_unlock_irqrestore+0x43/0x70 [ 38.509574][ T388] get_partial_node.part.0+0x1c5/0x3a0 [ 38.509748][ T388] ___slab_alloc+0xb70/0x10a0 [ 38.510008][ T388] __kmalloc+0x34c/0x3c0 [ 38.510205][ T388] p9_fcall_init+0x7d/0x1b0 [ 38.510388][ T388] p9_tag_alloc+0x1bd/0x700 [ 38.510742][ T388] p9_client_prepare_req+0xe6/0x290 [ 38.510917][ T388] p9_client_rpc+0x18d/0x930 [ 38.511091][ T388] p9_client_clunk+0x74/0xe0 [ 38.511268][ T388] v9fs_dentry_release+0xb9/0x140 [ 38.511525][ T388] __dentry_kill+0x1d9/0x4f0 [ 38.511702][ T388] dput.part.0+0x333/0x6c0 [ 38.511881][ T388] walk_component+0x199/0x4f0 [ 38.512174][ T388] link_path_walk.part.0.constprop.0+0x494/0x9f0 [ 38.512386][ T388] path_openat+0x1be/0x440 [ 38.512561][ T388] do_filp_open+0x1b3/0x3e0 [ 38.512743][ T388] do_sys_openat2+0x122/0x160 [ 38.512916][ T388] __x64_sys_openat+0x123/0x1e0 [ 38.513099][ T388] do_syscall_64+0xc6/0x1e0 [ 38.513284][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.513497][ T388] INITIAL USE at: [ 38.513603][ T388] __lock_acquire+0x797/0x1570 [ 38.513780][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.513956][ T388] _raw_write_lock_bh+0x38/0x50 [ 38.514156][ T388] addrconf_permanent_addr+0x6e/0x670 [ 38.514340][ T388] addrconf_notify+0x749/0xd60 [ 38.514516][ T388] notifier_call_chain+0xcd/0x150 [ 38.514774][ T388] __dev_notify_flags+0xe6/0x250 [ 38.514949][ T388] dev_change_flags+0xec/0x160 [ 38.515123][ T388] do_setlink+0x7d6/0x21e0 [ 38.515382][ T388] __rtnl_newlink+0xaa7/0xd80 [ 38.515560][ T388] rtnl_newlink+0x63/0xa0 [ 38.515733][ T388] rtnetlink_rcv_msg+0x2fb/0xbf0 [ 38.515994][ T388] netlink_rcv_skb+0x130/0x360 [ 38.516175][ T388] netlink_unicast+0x449/0x710 [ 38.516354][ T388] netlink_sendmsg+0x723/0xbe0 [ 38.516530][ T388] ____sys_sendmsg+0x7b2/0xa10 [ 38.516708][ T388] ___sys_sendmsg+0xee/0x170 [ 38.516892][ T388] __sys_sendmsg+0xcd/0x170 [ 38.517066][ T388] do_syscall_64+0xc6/0x1e0 [ 38.517250][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.517467][ T388] INITIAL READ USE at: [ 38.517574][ T388] __lock_acquire+0x797/0x1570 [ 38.517752][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.518015][ T388] _raw_read_lock_bh+0x44/0x80 [ 38.518219][ T388] inet6_fill_ifla6_attrs+0x516/0x740 [ 38.518434][ T388] inet6_fill_link_af+0x5e/0xe0 [ 38.518697][ T388] rtnl_fill_ifinfo+0x1612/0x29e0 [ 38.518872][ T388] rtmsg_ifinfo_build_skb+0x13c/0x240 [ 38.519082][ T388] rtmsg_ifinfo_event.part.0+0x2d/0x120 [ 38.519391][ T388] rtmsg_ifinfo+0x5b/0xa0 [ 38.519567][ T388] register_netdevice+0x1177/0x1690 [ 38.519777][ T388] register_netdev+0x20/0x40 [ 38.520047][ T388] sit_init_net+0x250/0x4f0 [ 38.520233][ T388] ops_init+0x9b/0x560 [ 38.520424][ T388] register_pernet_operations+0x2db/0x710 [ 38.520656][ T388] register_pernet_device+0x2a/0x60 [ 38.520870][ T388] sit_init+0x23/0xe0 [ 38.521047][ T388] do_one_initcall+0x8d/0x1e0 [ 38.521226][ T388] do_initcalls+0x1b2/0x3e0 [ 38.521482][ T388] kernel_init_freeable+0x232/0x310 [ 38.521689][ T388] kernel_init+0x20/0x200 [ 38.521865][ T388] ret_from_fork+0x31/0x70 [ 38.522162][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.522341][ T388] } [ 38.522414][ T388] ... key at: [] __key.37+0x0/0x40 [ 38.522630][ T388] [ 38.522630][ T388] the dependencies between the lock to be acquired [ 38.522631][ T388] and SOFTIRQ-irq-unsafe lock: [ 38.523003][ T388] -> (&p->alloc_lock){+.+.}-{2:2} { [ 38.523157][ T388] HARDIRQ-ON-W at: [ 38.523270][ T388] __lock_acquire+0x797/0x1570 [ 38.523448][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.523621][ T388] _raw_spin_lock+0x30/0x40 [ 38.523795][ T388] set_mems_allowed+0x1d/0x210 [ 38.524057][ T388] kernel_init_freeable+0x72/0x310 [ 38.524241][ T388] kernel_init+0x20/0x200 [ 38.524414][ T388] ret_from_fork+0x31/0x70 [ 38.524668][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.524844][ T388] SOFTIRQ-ON-W at: [ 38.524948][ T388] __lock_acquire+0x797/0x1570 [ 38.525157][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.525413][ T388] _raw_spin_lock+0x30/0x40 [ 38.525589][ T388] set_mems_allowed+0x1d/0x210 [ 38.525760][ T388] kernel_init_freeable+0x72/0x310 [ 38.526024][ T388] kernel_init+0x20/0x200 [ 38.526225][ T388] ret_from_fork+0x31/0x70 [ 38.526400][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.526575][ T388] INITIAL USE at: [ 38.526685][ T388] __lock_acquire+0x797/0x1570 [ 38.526865][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.527042][ T388] _raw_spin_lock+0x30/0x40 [ 38.527219][ T388] set_mems_allowed+0x1d/0x210 [ 38.527394][ T388] kernel_init_freeable+0x72/0x310 [ 38.527569][ T388] kernel_init+0x20/0x200 [ 38.527742][ T388] ret_from_fork+0x31/0x70 [ 38.528001][ T388] ret_from_fork_asm+0x1a/0x30 [ 38.528180][ T388] } [ 38.528255][ T388] ... key at: [] __key.387+0x0/0x40 [ 38.528465][ T388] ... acquired at: [ 38.528649][ T388] check_prev_add+0x194/0xce0 [ 38.528792][ T388] validate_chain+0x71d/0x9b0 [ 38.528934][ T388] __lock_acquire+0xaf0/0x1570 [ 38.529074][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.529296][ T388] _raw_spin_lock+0x30/0x40 [ 38.529441][ T388] __get_task_comm+0x27/0x70 [ 38.529581][ T388] ref_tracker_alloc+0x2ee/0x490 [ 38.529720][ T388] netdev_get_by_index+0x5e/0x80 [ 38.529860][ T388] fib6_nh_init+0x3d8/0x15b0 [ 38.530097][ T388] ip6_route_info_create+0xf18/0x17d0 [ 38.530248][ T388] addrconf_f6i_alloc+0x265/0x560 [ 38.530387][ T388] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.530537][ T388] addrconf_join_anycast+0x1c0/0x220 [ 38.530685][ T388] dev_forward_change+0x2a6/0x7b0 [ 38.530827][ T388] addrconf_fixup_forwarding+0x23f/0x460 [ 38.531009][ T388] addrconf_sysctl_forward+0x212/0x2b0 [ 38.531148][ T388] proc_sys_call_handler+0x403/0x5e0 [ 38.531288][ T388] vfs_write+0x9e5/0x10a0 [ 38.531426][ T388] ksys_write+0xf5/0x1e0 [ 38.531562][ T388] do_syscall_64+0xc6/0x1e0 [ 38.531699][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.532040][ T388] [ 38.532110][ T388] [ 38.532110][ T388] stack backtrace: [ 38.532278][ T388] CPU: 1 PID: 388 Comm: sysctl Not tainted 6.9.0-rc1-virtme #1 [ 38.532484][ T388] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 38.532868][ T388] Call Trace: [ 38.532972][ T388] [ 38.533051][ T388] dump_stack_lvl+0x82/0xd0 [ 38.533195][ T388] print_bad_irq_dependency+0x957/0xd40 [ 38.533415][ T388] ? hlock_class+0x4e/0x130 [ 38.533553][ T388] ? __pfx_print_bad_irq_dependency+0x10/0x10 [ 38.533724][ T388] ? __pfx_usage_skip+0x10/0x10 [ 38.533864][ T388] ? __bfs+0x246/0x650 [ 38.534052][ T388] ? __pfx_usage_match+0x10/0x10 [ 38.534213][ T388] check_irq_usage+0x596/0x850 [ 38.534356][ T388] ? __pfx_check_irq_usage+0x10/0x10 [ 38.534499][ T388] ? __bfs+0x246/0x650 [ 38.534607][ T388] ? __pfx_hlock_conflict+0x10/0x10 [ 38.534748][ T388] ? check_path.constprop.0+0x24/0x50 [ 38.534887][ T388] ? check_noncircular+0x14c/0x3e0 [ 38.535026][ T388] ? __pfx_check_noncircular+0x10/0x10 [ 38.535167][ T388] ? check_prev_add+0x194/0xce0 [ 38.535305][ T388] check_prev_add+0x194/0xce0 [ 38.535442][ T388] ? validate_chain+0x130/0x9b0 [ 38.535581][ T388] validate_chain+0x71d/0x9b0 [ 38.535720][ T388] ? mark_lock+0x38/0x3e0 [ 38.535907][ T388] ? __pfx_validate_chain+0x10/0x10 [ 38.536048][ T388] ? hlock_class+0x4e/0x130 [ 38.536183][ T388] ? mark_lock+0x38/0x3e0 [ 38.536288][ T388] __lock_acquire+0xaf0/0x1570 [ 38.536427][ T388] lock_acquire.part.0+0xeb/0x330 [ 38.536648][ T388] ? __get_task_comm+0x27/0x70 [ 38.536787][ T388] ? mark_lock+0x38/0x3e0 [ 38.536896][ T388] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 38.537035][ T388] ? trace_lock_acquire+0x135/0x1c0 [ 38.537254][ T388] ? __get_task_comm+0x27/0x70 [ 38.537389][ T388] ? lock_acquire+0x32/0xc0 [ 38.537528][ T388] ? __get_task_comm+0x27/0x70 [ 38.537666][ T388] _raw_spin_lock+0x30/0x40 [ 38.537883][ T388] ? __get_task_comm+0x27/0x70 [ 38.538024][ T388] __get_task_comm+0x27/0x70 [ 38.538180][ T388] ref_tracker_alloc+0x2ee/0x490 [ 38.538324][ T388] ? __pfx_ref_tracker_alloc+0x10/0x10 [ 38.538464][ T388] ? dev_get_by_index+0x177/0x270 [ 38.538682][ T388] ? netdev_get_by_index+0x5e/0x80 [ 38.538817][ T388] ? fib6_nh_init+0x3d8/0x15b0 [ 38.538953][ T388] ? ip6_route_info_create+0xf18/0x17d0 [ 38.539090][ T388] ? addrconf_f6i_alloc+0x265/0x560 [ 38.539311][ T388] ? __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.539449][ T388] ? addrconf_join_anycast+0x1c0/0x220 [ 38.539586][ T388] ? dev_forward_change+0x2a6/0x7b0 [ 38.539725][ T388] ? addrconf_fixup_forwarding+0x23f/0x460 [ 38.539974][ T388] ? addrconf_sysctl_forward+0x212/0x2b0 [ 38.540112][ T388] ? proc_sys_call_handler+0x403/0x5e0 [ 38.540249][ T388] ? vfs_write+0x9e5/0x10a0 [ 38.540385][ T388] ? ksys_write+0xf5/0x1e0 [ 38.540614][ T388] ? do_syscall_64+0xc6/0x1e0 [ 38.540756][ T388] ? entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.540925][ T388] ? dev_get_by_index+0x177/0x270 [ 38.541063][ T388] netdev_get_by_index+0x5e/0x80 [ 38.541281][ T388] fib6_nh_init+0x3d8/0x15b0 [ 38.541418][ T388] ? lockdep_hardirqs_on_prepare.part.0+0x14f/0x370 [ 38.541592][ T388] ? __pfx_fib6_nh_init+0x10/0x10 [ 38.541727][ T388] ? kasan_save_track+0x14/0x30 [ 38.541948][ T388] ? __kasan_kmalloc+0x7f/0x90 [ 38.542095][ T388] ? __kmalloc+0x1d7/0x3c0 [ 38.542247][ T388] ? fib6_get_table+0x116/0x290 [ 38.542389][ T388] ip6_route_info_create+0xf18/0x17d0 [ 38.542687][ T388] ? __lock_release+0x103/0x460 [ 38.542828][ T388] ? __pfx_ip6_route_info_create+0x10/0x10 [ 38.542999][ T388] ? addrconf_f6i_alloc+0x12d/0x560 [ 38.543137][ T388] addrconf_f6i_alloc+0x265/0x560 [ 38.543355][ T388] ? __pfx_addrconf_f6i_alloc+0x10/0x10 [ 38.543500][ T388] ? do_raw_write_lock+0x122/0x3b0 [ 38.543638][ T388] ? __pfx_do_raw_write_lock+0x10/0x10 [ 38.543775][ T388] ? lock_acquire+0x32/0xc0 [ 38.543913][ T388] __ipv6_dev_ac_inc+0x25f/0xb10 [ 38.544157][ T388] addrconf_join_anycast+0x1c0/0x220 [ 38.544297][ T388] ? mark_lock+0x38/0x3e0 [ 38.544402][ T388] ? __pfx_addrconf_join_anycast+0x10/0x10 [ 38.544574][ T388] ? lockdep_hardirqs_on_prepare.part.0+0x1af/0x370 [ 38.544758][ T388] dev_forward_change+0x2a6/0x7b0 [ 38.544896][ T388] ? __pfx_dev_forward_change+0x10/0x10 [ 38.545038][ T388] addrconf_fixup_forwarding+0x23f/0x460 [ 38.545178][ T388] addrconf_sysctl_forward+0x212/0x2b0 [ 38.545318][ T388] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.545492][ T388] ? __pfx_addrconf_sysctl_forward+0x10/0x10 [ 38.545665][ T388] ? trace_kmalloc+0x2a/0xe0 [ 38.545803][ T388] ? __kmalloc_node+0x220/0x400 [ 38.546022][ T388] ? proc_sys_call_handler+0x30b/0x5e0 [ 38.546179][ T388] proc_sys_call_handler+0x403/0x5e0 [ 38.546317][ T388] ? __pfx_proc_sys_call_handler+0x10/0x10 [ 38.546489][ T388] ? __lock_acquire+0xaf0/0x1570 [ 38.546709][ T388] vfs_write+0x9e5/0x10a0 [ 38.546813][ T388] ? do_user_addr_fault+0x449/0xbe0 [ 38.546950][ T388] ? __pfx_vfs_write+0x10/0x10 [ 38.547091][ T388] ? find_held_lock+0x2c/0x110 [ 38.547309][ T388] ? __pfx___lock_release+0x10/0x10 [ 38.547446][ T388] ? __fget_light+0x53/0x1e0 [ 38.547587][ T388] ksys_write+0xf5/0x1e0 [ 38.547691][ T388] ? __pfx_ksys_write+0x10/0x10 [ 38.547828][ T388] ? do_user_addr_fault+0x4bd/0xbe0 [ 38.548047][ T388] do_syscall_64+0xc6/0x1e0 [ 38.548184][ T388] entry_SYSCALL_64_after_hwframe+0x6d/0x75 [ 38.548353][ T388] RIP: 0033:0x7f629c8df957 [ 38.548505][ T388] 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 [ 38.549072][ T388] RSP: 002b:00007ffce88e6558 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 38.549370][ T388] RAX: ffffffffffffffda RBX: 000056085bdf7360 RCX: 00007f629c8df957 [ 38.549582][ T388] RDX: 0000000000000002 RSI: 000056085bdf73a0 RDI: 0000000000000005 [ 38.549787][ T388] RBP: 000056085bdf94d0 R08: 0000000000000003 R09: 0000000000000077 [ 38.550077][ T388] R10: 000000000000006b R11: 0000000000000246 R12: 0000000000000002 [ 38.550304][ T388] R13: 0000000000000002 R14: 0000000000000002 R15: 00007f629c9969c0 [ 38.550524][ T388]