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BUG: KMSAN: uninit-value in ip_vs_lblc_check_expire+0xe62/0xf10 net/netfilter/ipvs/ip_vs_lblc.c:315
CPU: 1 PID: 14012 Comm: udevd Not tainted 4.17.0+ #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1476
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:651
 ip_vs_lblc_check_expire+0xe62/0xf10 net/netfilter/ipvs/ip_vs_lblc.c:315
 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x592/0x979 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:366 [inline]
 irq_exit+0x207/0x240 kernel/softirq.c:407
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868
 </IRQ>
RIP: 0010:msan_get_shadow_origin_ptr+0x25e/0x2e0 mm/kmsan/kmsan_instr.c:320
RSP: 0018:ffff8801bcf1f6c8 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff13
RAX: ffffffff8b5fe000 RBX: ffff8801bf24a620 RCX: 0000000000000000
RDX: ffffffff8b5ff000 RSI: 0000000000000001 RDI: ffffea000632ba40
RBP: ffff8801bcf1f6e8 R08: 0000000000000000 R09: ffff88021fd39050
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801bf249d40 R14: ffffffff8b5fe000 R15: ffffea000632ba40
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:361
 page_to_nid include/linux/mm.h:910 [inline]
 page_zone include/linux/mm.h:1026 [inline]
 inc_zone_page_state+0x41/0x2f0 mm/vmstat.c:526
 pgtable_page_ctor include/linux/mm.h:1845 [inline]
 pte_alloc_one+0xc3/0x100 arch/x86/mm/pgtable.c:33
 __pte_alloc+0x86/0x410 mm/memory.c:655
 copy_pte_range mm/memory.c:1077 [inline]
 copy_pmd_range mm/memory.c:1153 [inline]
 copy_pud_range mm/memory.c:1187 [inline]
 copy_p4d_range mm/memory.c:1209 [inline]
 copy_page_range+0x3030/0x3f50 mm/memory.c:1271
 dup_mmap kernel/fork.c:512 [inline]
 dup_mm kernel/fork.c:1235 [inline]
 copy_mm kernel/fork.c:1289 [inline]
 copy_process+0x6dd8/0x9c20 kernel/fork.c:1795
 _do_fork+0x353/0xf60 kernel/fork.c:2089
 __do_sys_clone kernel/fork.c:2196 [inline]
 __se_sys_clone kernel/fork.c:2190 [inline]
 __x64_sys_clone+0x15e/0x1b0 kernel/fork.c:2190
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x7f09e69bcf46
RSP: 002b:00007fff6ba64d10 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff6ba64d10 RCX: 00007f09e69bcf46
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007fff6ba64d70 R08: 00000000000036bc R09: 00000000000036bc
R10: 00007f09e72d9a70 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6ba64d30 R14: 0000000000000005 R15: 0000000000000005

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:323 [inline]
 kmsan_internal_alloc_meta_for_pages+0x15c/0x710 mm/kmsan/kmsan.c:862
 kmsan_alloc_page+0x87/0xe0 mm/kmsan/kmsan.c:1175
 __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4404
 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:494 [inline]
 kmalloc_order mm/slab_common.c:1148 [inline]
 kmalloc_order_trace+0xbb/0x390 mm/slab_common.c:1159
 kmalloc_large include/linux/slab.h:446 [inline]
 __kmalloc+0x335/0x350 mm/slub.c:3805
 kmalloc include/linux/slab.h:517 [inline]
 ip_vs_lblc_init_svc+0x57/0x310 net/netfilter/ipvs/ip_vs_lblc.c:355
 ip_vs_bind_scheduler+0xa9/0x1f0 net/netfilter/ipvs/ip_vs_sched.c:51
 ip_vs_add_service+0xa9d/0x1d90 net/netfilter/ipvs/ip_vs_ctl.c:1265
 do_ip_vs_set_ctl+0x2aa9/0x2cd0 net/netfilter/ipvs/ip_vs_ctl.c:2462
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x47c/0x4e0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x24b/0x2b0 net/ipv4/ip_sockglue.c:1251
 udp_setsockopt+0x108/0x1b0 net/ipv4/udp.c:2416
 sock_common_setsockopt+0x13b/0x170 net/core/sock.c:3039
 __sys_setsockopt+0x496/0x540 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1911
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
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