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Jakub Kicinski 3249eae7e4 net: ethtool: fix leaking netdev ref if ethnl_default_parse() failed
Ido spotted that I made a mistake in commit under Fixes,
ethnl_default_parse() may acquire a dev reference even when it returns
an error. This may have been driven by the code structure in dumps
(which unconditionally release dev before handling errors), but it's
too much of a trap. Functions should undo what they did before returning
an error, rather than expecting caller to clean up.

Rather than fixing ethnl_default_set_doit() directly make
ethnl_default_parse() clean up errors.

Reported-by: Ido Schimmel <idosch@idosch.org>
Link: https://lore.kernel.org/aGEPszpq9eojNF4Y@shredder
Fixes: 963781bdfe ("net: ethtool: call .parse_request for SET handlers")
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20250630154053.1074664-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
History 2025-07-01 17:27:53 -07:00
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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 reStructuredText 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.