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The problem is that "req->actual" is a u32, "req->status" is an int, and iocb->ki_complete() takes a long. We would expect that a negative error code in "req->status" would translate to a negative long value. But what actually happens is that because "req->actual" is a u32, the error codes is type promoted to a high positive value and then remains a positive value when it is cast to long. (No sign expansion). We can fix this by casting "req->status" to long. Acked-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/YIE7RrBPLWc3XtMg@mwanda Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.