NFSD: Fix trace_nfsd_fh_verify_err() crasher

Now that the nfsd_fh_verify_err() tracepoint is always called on
error, it needs to handle cases where the filehandle is not yet
fully formed.

Fixes: 93c128e709 ("nfsd: ensure we always call fh_verify_error tracepoint")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
This commit is contained in:
Chuck Lever 2022-11-12 15:06:07 -05:00
commit 5a01c80544