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[ Upstream commit 139512191bd06f1b496117c76372b2ce372c9a41 ] __ip_rt_update_pmtu() must use RCU protection to make sure the net structure it reads does not disappear. Fixes:2fbc6e89b2("ipv4: Update exception handling for multipath routes via same device") Fixes:1de6b15a43("Namespaceify min_pmtu sysctl") Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://patch.msgid.link/20250205155120.1676781-8-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> 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.