Merge tag 'usb-serial-5.8-rc6' of... (c7300cdf) · Commits · 戴 / test

Merge tag 'usb-serial-5.8-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus Johan writes: USB-serial fixes for 5.8-rc6 Here's a fix for 5.8 addressing a long-standing bug in iuu_phoenix. * tag 'usb-serial-5.8-rc6' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial: USB: serial: iuu_phoenix: fix memory corruption

drivers/usb/serial/iuu_phoenix.c

+5 −3

Original line number	Diff line number	Diff line
		@@ -697,14 +697,16 @@ static int iuu_uart_write(struct tty_struct tty, struct usb_serial_port port,
		struct iuu_private *priv = usb_get_serial_port_data(port);
		unsigned long flags;

		if (count > 256)
		return -ENOMEM;

		spin_lock_irqsave(&priv->lock, flags);

		count = min(count, 256 - priv->writelen);
		if (count == 0)
		goto out;

		/* fill the buffer */
		memcpy(priv->writebuf + priv->writelen, buf, count);
		priv->writelen += count;
		out:
		spin_unlock_irqrestore(&priv->lock, flags);

		return count;