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The zstd compression code seems to have a bug where it will write just past the end of the destination buffer - probably only when the compressed output isn't going to fit in the destination buffer, which will never happen if you're always allocating a bigger buffer than the source buffer which would explain other users not hitting it. But, we size the buffer according to how much contiguous space on disk we have, so... generally, bugs like this don't write more than a word past the end of the buffer, so an easy workaround is to subtract a fudge factor from the buffer size. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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.