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[ Upstream commit09a1f9a168] If an error happens while getting the key or session in the ->calc_signature implementations, 0 (success) is returned. Fix it by returning a proper error code. Since it seems to be highly unlikely to happen wrap the rc check in unlikely() too. Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com> Fixes:32811d242f("cifs: Start using per session key for smb2/3 for signature generation") Signed-off-by: Enzo Matsumiya <ematsumiya@suse.de> Signed-off-by: Steve French <stfrench@microsoft.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 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.