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Chuck Lever b2b18a9f68 NFSD: Fix CB_GETATTR status fix 
commit 4990d09843 upstream.

Jeff says:

Now that I look, 1b3e26a5cc is wrong. The patch on the ml was correct, but
the one that got committed is different. It should be:

    status = decode_cb_op_status(xdr, OP_CB_GETATTR, &cb->cb_status);
    if (unlikely(status || cb->cb_status))

If "status" is non-zero, decoding failed (usu. BADXDR), but we also want to
bail out and not decode the rest of the call if the decoded cb_status is
non-zero. That's not happening here, cb_seq_status has already been checked and
is non-zero, so this ends up trying to decode the rest of the CB_GETATTR reply
when it doesn't exist.

Reported-by: Jeff Layton <jlayton@kernel.org>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219737
Fixes: 1b3e26a5cc ("NFSD: fix decoding in nfs4_xdr_dec_cb_getattr")
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-04-20 10:16:01 +02:00
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README 

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 reStructuredText 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.