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Currently, rt_sigreturn does very limited checking on the sigcontext coming from userspace. Future additions to the sigcontext data will increase the potential for surprises. Also, it is not clear whether the sigcontext extension records are supposed to occur in a particular order. To allow the parsing code to be extended more easily, this patch factors out the sigcontext parsing into a separate function, and adds extra checks to validate the well-formedness of the sigcontext structure. Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Dave Martin <Dave.Martin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
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.