r0 = syz_open_dev$tty1(0xc, 0x4, 0x1)
ioctl$TIOCVHANGUP(r0, 0x5437, 0x0)
writev(r0, &(0x7f0000000380)=[{&(0x7f0000000080)='y', 0x1}], 0x1)