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BUG: KMSAN: uninit-value in do_ip_vs_set_ctl+0x15ac/0x2760 net/netfilter/ipvs/ip_vs_ctl.c:2424
CPU: 1 PID: 6530 Comm: syz-executor7 Not tainted 4.17.0-rc3+ #94
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
 do_ip_vs_set_ctl+0x15ac/0x2760 net/netfilter/ipvs/ip_vs_ctl.c:2424
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x476/0x4d0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x24b/0x2b0 net/ipv4/ip_sockglue.c:1253
 raw_setsockopt+0x2e5/0x350 net/ipv4/raw.c:868
 sock_common_setsockopt+0x136/0x170 net/core/sock.c:3039
 __sys_setsockopt+0x4af/0x560 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+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455a09
RSP: 002b:00007f2467e95c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007f2467e966d4 RCX: 0000000000455a09
RDX: 0000000000000480 RSI: 0000000000000000 RDI: 0000000000000014
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000005d3 R14: 00000000006fcc68 R15: 0000000000000000

Local variable description: ----arg@do_ip_vs_set_ctl
Variable was created at:
 read_pnet include/net/net_namespace.h:288 [inline]
 sock_net include/net/sock.h:2306 [inline]
 do_ip_vs_set_ctl+0x93/0x2760 net/netfilter/ipvs/ip_vs_ctl.c:2347
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x476/0x4d0 net/netfilter/nf_sockopt.c:115
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