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[ Upstream commit9a5a85972c] Pointer mddev is being dereferenced with a test_bit call before mddev is being null checked, this may cause a null pointer dereference. Fix this by moving the null pointer checks to sanity check mddev before it is dereferenced. Addresses-Coverity: ("Dereference before null check") Fixes:62f7b1989c("md raid0/linear: Mark array as 'broken' and fail BIOs if a member is gone") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Guilherme G. Piccoli <gpiccoli@canonical.com> Signed-off-by: Song Liu <songliubraving@fb.com> 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.