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40b8b826a6
The commit079ad2fb4b("kobject: Avoid premature parent object freeing in kobject_cleanup()") inadvertently dropped a possibility to call kobject_del() with NULL pointer. Restore the old behaviour. Fixes:079ad2fb4b("kobject: Avoid premature parent object freeing in kobject_cleanup()") Cc: stable <stable@vger.kernel.org> Reported-by: Qu Wenruo <quwenruo.btrfs@gmx.com> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Qu Wenruo <wqu@suse.com> Link: https://lore.kernel.org/r/20200803082706.65347-1-andriy.shevchenko@linux.intel.com 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.