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find_dev_data() does not check whether the return value alloc_dev_data() is NULL. This was okay once because the pointer was returned once as-is. Since commitdf3f7a6e8e("iommu/amd: Use is_attach_deferred call-back") the pointer may be used within find_dev_data() so a NULL check is required. Cc: Baoquan He <bhe@redhat.com> Fixes:df3f7a6e8e("iommu/amd: Use is_attach_deferred call-back") Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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.