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BUG: KMSAN: uninit-value in prefetch_freepointer mm/slub.c:276 [inline]
BUG: KMSAN: uninit-value in slab_alloc_node mm/slub.c:2713 [inline]
BUG: KMSAN: uninit-value in __kmalloc_node+0xec4/0x1220 mm/slub.c:3823
CPU: 1 PID: 4506 Comm: syz-executor3 Not tainted 4.18.0-rc8+ #33
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+0x17c/0x1c0 lib/dump_stack.c:113
 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:982
 __msan_warning+0x70/0xc0 mm/kmsan/kmsan_instr.c:645
 prefetch_freepointer mm/slub.c:276 [inline]
 slab_alloc_node mm/slub.c:2713 [inline]
 __kmalloc_node+0xec4/0x1220 mm/slub.c:3823
 kmalloc_node include/linux/slab.h:555 [inline]
 kzalloc_node include/linux/slab.h:718 [inline]
 __get_vm_area_node+0x27b/0x790 mm/vmalloc.c:1390
 __vmalloc_node_range+0x32a/0x1140 mm/vmalloc.c:1749
 __vmalloc_node mm/vmalloc.c:1799 [inline]
 __vmalloc_node_flags mm/vmalloc.c:1813 [inline]
 vzalloc+0xd8/0xf0 mm/vmalloc.c:1852
 alloc_counters+0x99/0x8f0 net/ipv6/netfilter/ip6_tables.c:819
 copy_entries_to_user net/ipv4/netfilter/arp_tables.c:674 [inline]
 get_entries net/ipv4/netfilter/arp_tables.c:861 [inline]
 do_arpt_get_ctl+0x7cd/0xe50 net/ipv4/netfilter/arp_tables.c:1482
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122
 ip_getsockopt+0x36b/0x4e0 net/ipv4/ip_sockglue.c:1577
 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3550
 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2999
 __sys_getsockopt+0x48c/0x550 net/socket.c:1949
 __do_sys_getsockopt net/socket.c:1960 [inline]
 __se_sys_getsockopt net/socket.c:1957 [inline]
 __x64_sys_getsockopt+0x15d/0x1c0 net/socket.c:1957
 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x459b7a
Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 da 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 
RSP: 002b:0000000000a3f678 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000a3f780 RCX: 0000000000459b7a
RDX: 0000000000000061 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000a3f68c R09: 000000000000000a
R10: 0000000000a3f780 R11: 0000000000000212 R12: 0000000000000000
R13: 0000000000031e9d R14: 000000000000000b R15: badc0ffeebadface

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:181
 kmsan_kmalloc+0x98/0x100 mm/kmsan/kmsan_hooks.c:91
 __kmalloc+0x13a/0x350 mm/slub.c:3782
 kmalloc include/linux/slab.h:518 [inline]
 tipc_topsrv_queue_evt+0x49f/0x970 net/tipc/topsrv.c:333
 tipc_sub_send_event net/tipc/subscr.c:54 [inline]
 tipc_sub_timeout+0x28f/0x400 net/tipc/subscr.c:109
 call_timer_fn+0x270/0x5c0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd74/0x1170 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x582/0x969 kernel/softirq.c:292
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