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commit17175d1a27("xfrm: esp6: fix encapsulation header offset computation") changed esp6_input_done2 to correctly find the size of the IPv6 header that precedes the TCP/UDP encapsulation header, but didn't adjust the final call to skb_set_transport_header, which I assumed was correct in using skb_network_header_len. Xiumei Mu reported that when we create xfrm states that include port numbers in the selector, traffic from the user sockets is dropped. It turns out that we get a state mismatch in __xfrm_policy_check, because we end up trying to compare the encapsulation header's ports with the selector that's based on user traffic ports. Fixes:0146dca70b("xfrm: add support for UDPv6 encapsulation of ESP") Fixes:26333c37fc("xfrm: add IPv6 support for espintcp") Reported-by: Xiumei Mu <xmu@redhat.com> Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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.