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53991aedcd
unpack_profile() sets a default error on entry but this gets overridden
by error assignment by functions called in its body. If an error
check that was relying on the default value is triggered after one
of these error assignments then zero will be passed to ERR_PTR.
Fix this by setting up a default -EPROTO assignment in the error
path and while we are at it make sure the correct error is returned
in non-default cases.
Fixes: 217af7e2f4 ("apparmor: refactor profile rules and attachments")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>
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.