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Zilin Guan c94fd6e8a7 md/raid1: fix memory leak in raid1_run() 
[ Upstream commit 6abc7d5dcf ]

raid1_run() calls setup_conf() which registers a thread via
md_register_thread(). If raid1_set_limits() fails, the previously
registered thread is not unregistered, resulting in a memory leak
of the md_thread structure and the thread resource itself.

Add md_unregister_thread() to the error path to properly cleanup
the thread, which aligns with the error handling logic of other paths
in this function.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

Link: https://lore.kernel.org/linux-raid/20260126071533.606263-1-zilin@seu.edu.cn
Fixes: 97894f7d3c ("md/raid1: use the atomic queue limit update APIs")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Reviewed-by: Li Nan <linan122@huawei.com>
Signed-off-by: Yu Kuai <yukuai@fnnas.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-03-04 07:19:30 -05:00
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README

README 

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.