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After complete(&setup_done), devtmpfs_init proceeds and may actually return, invalidating the *err pointer, before devtmpfsd() proceeds to reading back *err. This is of course completely theoretical since the error conditions never trigger in practice, and even if they did, nobody cares about the exit value from a kernel thread, so it doesn't matter if we happen to read back some garbage from some other stack frame. Still, this isn't a pattern that should be copy-pasted, so fix it. Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20200115184154.3492-2-linux@rasmusvillemoes.dk Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.