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[ Upstream commit03832a32bf] When type is NFNL_CB_MUTEX and -EAGAIN error occur in nfnetlink_rcv_msg(), it does not execute nfnl_unlock(). That would trigger potential dead lock. Fixes:50f2db9e36("netfilter: nfnetlink: consolidate callback types") Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Signed-off-by: Florian Westphal <fw@strlen.de> 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.
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