r0 = syz_open_dev$tty20(0xc, 0x4, 0x1) r1 = syz_open_dev$tty20(0xc, 0x4, 0x1) r2 = dup(r1) ioctl$TCSETSW2(r2, 0x402c542c, &(0x7f00000000c0)={0x0, 0x0, 0x0, 0x0, 0x0, "b2f77be530bcbc2753195c35c7079d7d32fd07"}) r3 = dup(r0) ioctl$TIOCSTI(r3, 0x5412, &(0x7f0000000100)) read(r0, &(0x7f0000000000)=""/182, 0xb6)