On Friday 09 May 2014 12:19:16 Josh Triplett wrote: > + if (!access_ok(VERIFY_WRITE, buf, count)) > + return -EFAULT; > + if (port > 65535) > + return 0; This should probably test against IO_SPACE_LIMIT, which may be zero, something larger than 65536 or even ULONG_MAX, depending on the architecture. In cases where this IO_SPACE_LIMIT is zero or ULONG_MAX, we should probably disallow access completely. The former case is for architectures that don't have any I/O ports, the other is either a mistake, or is used when inb is defined as readb, and the port numbers are just virtual addresses. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
