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[ Upstream commit 69b0194ccec033c208b071e019032c1919c2822d ] simple_malloc() will return NULL when there is not enough memory left. Check pointer 'new' before using it to copy the old data. Signed-off-by: Li zeming <zeming@nfschina.com> [mpe: Reword subject, use change log from Christophe] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://msgid.link/20221219021816.3012-1-zeming@nfschina.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.