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commit38a2204f52upstream. The legacy client tracking infrastructure of nfsd makes use of MD5 to derive a client's recovery directory name. As the nfsd module doesn't declare any dependency on CRYPTO_MD5, though, it may fail to allocate the hash if the kernel was compiled without it. As a result, generation of client recovery directories will fail with the following error: NFSD: unable to generate recoverydir name The explicit dependency on CRYPTO_MD5 was removed as redundant back in6aaa67b5f3(NFSD: Remove redundant "select" clauses in fs/Kconfig 2008-02-11) as it was already implicitly selected via RPCSEC_GSS_KRB5. This broke when RPCSEC_GSS_KRB5 was made optional for NFSv4 in commitdf486a2590(NFS: Fix the selection of security flavours in Kconfig) at a later point. Fix the issue by adding back an explicit dependency on CRYPTO_MD5. Fixes:df486a2590(NFS: Fix the selection of security flavours in Kconfig) Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: J. Bruce Fields <bfields@redhat.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.