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[ Upstream commit 6510b62fe9303aaf48ff136ff69186bcfc32172d ] snprintf() returns the number of characters that *would* have been written, which can overestimate how much you actually wrote to the buffer in case of truncation. That leads to 'data += this' advancing the pointer past the end of the buffer and size going negative. Switching to scnprintf() prevents potential buffer overflows and ensures consistent behavior when building the output string. Signed-off-by: Seyediman Seyedarab <ImanDevel@gmail.com> Link: https://lore.kernel.org/r/20250724195913.60742-1-ImanDevel@gmail.com Signed-off-by: Danilo Krummrich <dakr@kernel.org> 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.