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Jesper Dangaard Brouer says: ==================== virtio_net: several bugs in XDP code for driver virtio_net The virtio_net driver actually violates the original memory model of XDP causing hard to debug crashes. Per request of John Fastabend, instead of removing the XDP feature I'm fixing as much as possible. While testing virtio_net with XDP_REDIRECT I found 4 different bugs. Patch-1: not enough tail-room for build_skb in receive_mergeable() only option is to disable XDP_REDIRECT in receive_mergeable() Patch-2: XDP in receive_small() basically never worked (check wrong flag) Patch-3: fix memory leak for XDP_REDIRECT in error cases Patch-4: avoid crash when ndo_xdp_xmit is called on dev not ready for XDP In the longer run, we should consider introducing a separate receive function when attaching an XDP program, and also change the memory model to be compatible with XDP when attaching an XDP prog. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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.