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If the same attribute is listed twice by the user in the ioctl attribute list then error unwind can cause the kernel to deref garbage. This happens when an object with WRITE access is sent twice. The second parse properly fails but corrupts the state required for the error unwind it triggers. Fixing this by making duplicates in the attribute list invalid. This is not something we need to support. The ioctl interface is currently recommended to be disabled in kConfig. Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Leon Romanovsky <leon@kernel.org> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.