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BUG: KMSAN: uninit-value in ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479
CPU: 0 PID: 25073 Comm: udevd Not tainted 4.17.0+ #22
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:990
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:640
 ip_vs_lblcr_check_expire+0x1551/0x1600 net/netfilter/ipvs/ip_vs_lblcr.c:479
 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:native_restore_fl arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:78 [inline]
RIP: 0010:__msan_chain_origin+0x82/0xc0 mm/kmsan/kmsan_instr.c:484
RSP: 0018:ffff8800b71bf948 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 00000000a420007a RBX: ffff88013f4557c0 RCX: ffff8800b71bf6b0
RDX: 0000000000000003 RSI: 0000000000000003 RDI: 0000000072ed3434
RBP: ffff8800b71bf978 R08: 0000000001080020 R09: 0000000000000003
R10: 0000000000000002 R11: ffffffff8200f000 R12: 0000000000000202
R13: ffff8800b268fc00 R14: 00000000d7600008 R15: 00000000a420007a
 step_into+0x741/0x1b50 fs/namei.c:1737
 walk_component+0x1d0/0xbb0 fs/namei.c:1788
 lookup_last fs/namei.c:2237 [inline]
 path_lookupat+0x3b4/0x1150 fs/namei.c:2287
 filename_lookup+0x2bb/0xa60 fs/namei.c:2321
 user_path_at_empty+0x123/0x140 fs/namei.c:2555
 do_readlinkat+0x163/0x4e0 fs/stat.c:394
 __do_sys_readlink fs/stat.c:427 [inline]
 __se_sys_readlink fs/stat.c:424 [inline]
 __x64_sys_readlink+0xe5/0x130 fs/stat.c:424
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x7fa75f8cd577
RSP: 002b:00007ffc95e50b68 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 000000000237d250 RCX: 00007fa75f8cd577
RDX: 0000000000000400 RSI: 00007ffc95e50b70 RDI: 00007ffc95e51050
RBP: 00007ffc95e51890 R08: 00007ffc95e51890 R09: 00007fa75f921dc0
R10: 7665642f7379732f R11: 0000000000000246 R12: 00007ffc95e51050
R13: 0000000000000400 R14: 000000000237d250 R15: 0000000002382e10

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_alloc_meta_for_pages+0x146/0x700 mm/kmsan/kmsan.c:702
 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250
 __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_lblcr_init_svc+0x57/0x310 net/netfilter/ipvs/ip_vs_lblcr.c:518
 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
 tcp_setsockopt+0x1c0/0x1f0 net/ipv4/tcp.c:2891
 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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