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[ Upstream commit9a3763e873] In rxe_net.c a received packet, from udp or loopback, is passed to rxe_rcv() in rxe_recv.c as a udp packet. I.e. skb->data is pointing at the udp header. But rxe_rcv() makes length checks to verify the packet is long enough to hold the roce headers as if it were a roce packet. I.e. skb->data pointing at the bth header. A runt packet would appear to have 8 more bytes than it actually does which may lead to incorrect behavior. This patch calls skb_pull() to adjust the skb to point at the bth header before calling rxe_rcv() which fixes this error. Fixes:8700e3e7c4("Soft RoCE driver") Link: https://lore.kernel.org/r/20230517172242.1806340-1-rpearsonhpe@gmail.com Signed-off-by: Bob Pearson <rpearsonhpe@gmail.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Sasha Levin <sashal@kernel.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.