r0 = syz_open_procfs(0x0, &(0x7f0000000000)='net/udp6\x00')
preadv(r0, &(0x7f00000001c0)=[{0x0, 0x2}, {&(0x7f0000000080)=""/100, 0x64}], 0x2, 0x0, 0x0)