Paul Moore 6a9e261cbb selinux: don't sleep when CONFIG_SECURITY_SELINUX_CHECKREQPROT_VALUE is true
Unfortunately commit 81200b0265 ("selinux: checkreqprot is
deprecated, add some ssleep() discomfort") added a five second sleep
during early kernel boot, e.g. start_kernel(), which could cause a
"scheduling while atomic" panic.  This patch fixes this problem by
moving the sleep out of checkreqprot_set() and into
sel_write_checkreqprot() so that we only sleep when the checkreqprot
setting is set during runtime, after the kernel has booted.  The
error message remains the same in both cases.

Fixes: 81200b0265 ("selinux: checkreqprot is deprecated, add some ssleep() discomfort")
Reported-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Paul Moore <paul@paul-moore.com>
2022-04-14 16:44:21 -04:00
2022-04-01 11:46:09 -07:00
2022-04-03 14:08:21 -07:00

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.
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