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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+0xef3/0x1240 mm/slub.c:3823
CPU: 0 PID: 4602 Comm: syz-executor4 Not tainted 4.18.0-rc5+ #29
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+0x185/0x1e0 lib/dump_stack.c:113
 kmsan_report+0x195/0x2c0 mm/kmsan/kmsan.c:982
 __msan_warning+0x7d/0xe0 mm/kmsan/kmsan_instr.c:645
 prefetch_freepointer mm/slub.c:276 [inline]
 slab_alloc_node mm/slub.c:2713 [inline]
 __kmalloc_node+0xef3/0x1240 mm/slub.c:3823
 kmalloc_node include/linux/slab.h:555 [inline]
 kzalloc_node include/linux/slab.h:718 [inline]
 __get_vm_area_node+0x289/0x810 mm/vmalloc.c:1390
 __vmalloc_node_range+0x332/0x1170 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+0x99/0x920 net/ipv6/netfilter/ip6_tables.c:819
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:841 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline]
 do_ip6t_get_ctl+0x87c/0x11f0 net/ipv6/netfilter/ip6_tables.c:1712
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122
 ipv6_getsockopt+0x268/0x4a0 net/ipv6/ipv6_sockglue.c:1370
 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3545
 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2999
 __sys_getsockopt+0x48c/0x550 net/socket.c:1948
 __do_sys_getsockopt net/socket.c:1959 [inline]
 __se_sys_getsockopt net/socket.c:1956 [inline]
 __x64_sys_getsockopt+0x15d/0x1c0 net/socket.c:1956
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x4585aa
Code: b8 34 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 1d 8f 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 fa 8e fb ff c3 66 0f 1f 84 00 00 00 00 00 
RSP: 002b:0000000000a3e328 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000a3e350 RCX: 00000000004585aa
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000013
RBP: 0000000000705d60 R08: 0000000000a3e34c R09: 0000000000004000
R10: 0000000000a3e450 R11: 0000000000000212 R12: 0000000000000013
R13: 0000000000000000 R14: 0000000000000029 R15: 0000000000704fe0

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_poison_shadow+0xc8/0x1d0 mm/kmsan/kmsan.c:181
 kmsan_kmalloc+0xa1/0x120 mm/kmsan/kmsan_hooks.c:91
 __kmalloc+0x147/0x370 mm/slub.c:3782
 kmalloc include/linux/slab.h:518 [inline]
 tipc_topsrv_queue_evt+0x4b0/0x9a0 net/tipc/topsrv.c:333
 tipc_sub_send_event net/tipc/subscr.c:54 [inline]
 tipc_sub_timeout+0x2db/0x400 net/tipc/subscr.c:109
 call_timer_fn+0x296/0x5f0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xde6/0x1220 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x55f/0x934 kernel/softirq.c:288
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