r0 = syz_open_procfs(0xffffffffffffffff, &(0x7f0000000100)='net/ip6_tables_names\x00') preadv(r0, &(0x7f00000000c0)=[{&(0x7f0000000080)=""/46, 0x2e}], 0x1, 0x0, 0x0)