IPVS: ftp: loaded support on port[0] = 21
==================================================================
BUG: KMSAN: uninit-value in rcu_cpu_has_callbacks kernel/rcu/tree.c:3420 [inline]
BUG: KMSAN: uninit-value in rcu_needs_cpu+0x160/0x1d0 kernel/rcu/tree_plugin.h:1314
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.17.0-rc5+ #96
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1084
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
 rcu_cpu_has_callbacks kernel/rcu/tree.c:3420 [inline]
 rcu_needs_cpu+0x160/0x1d0 kernel/rcu/tree_plugin.h:1314
 tick_nohz_next_event+0x24f/0x790 kernel/time/tick-sched.c:672
 __tick_nohz_idle_stop_tick kernel/time/tick-sched.c:930 [inline]
 tick_nohz_idle_stop_tick+0x135/0xd90 kernel/time/tick-sched.c:960
 cpuidle_idle_call kernel/sched/idle.c:150 [inline]
 do_idle+0x290/0x850 kernel/sched/idle.c:262
 cpu_startup_entry+0x45/0x50 kernel/sched/idle.c:368
 start_secondary+0x39d/0x470 arch/x86/kernel/smpboot.c:269
 secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:294 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:685
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528
 rcu_segcblist_enqueue+0x24c/0x2d0 kernel/rcu/rcu_segcblist.c:150
 __call_rcu+0x227/0xef0 kernel/rcu/tree.c:3057
 call_rcu_sched+0x32/0x40 kernel/rcu/tree.c:3097
 destroy_pid_namespace kernel/pid_namespace.c:146 [inline]
 free_pid_ns kernel/pid_namespace.c:164 [inline]
 kref_put include/linux/kref.h:70 [inline]
 put_pid_ns+0x17b/0x240 kernel/pid_namespace.c:173
 free_nsproxy+0x28b/0x4c0 kernel/nsproxy.c:182
 switch_task_namespaces kernel/nsproxy.c:229 [inline]
 exit_task_namespaces+0x174/0x200 kernel/nsproxy.c:234
 do_exit+0x10dc/0x38d0 kernel/exit.c:866
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 get_signal+0x1320/0x1f20 kernel/signal.c:2482
 do_signal+0xb8/0x1c80 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196
 syscall_return_slowpath+0xe9/0x700 arch/x86/entry/common.c:265
 do_syscall_64+0x1a6/0x220 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
 kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:189
 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:315
 kmem_cache_alloc+0xad3/0xb90 mm/slub.c:2772
 create_nsproxy kernel/nsproxy.c:53 [inline]
 create_new_namespaces+0xfb/0xe80 kernel/nsproxy.c:71
 unshare_nsproxy_namespaces+0x23b/0x320 kernel/nsproxy.c:206
 ksys_unshare+0x889/0x10f0 kernel/fork.c:2409
 __do_sys_unshare kernel/fork.c:2477 [inline]
 __se_sys_unshare kernel/fork.c:2475 [inline]
 __x64_sys_unshare+0x59/0x80 kernel/fork.c:2475
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
==================================================================