[PATCH] nfs: fix bitmap decoder to handle a 3rd word

[Jeff Layton]

It only decodes the first two words at this point. Have it decode the
third word as well. Without this, the client doesn't send delegated
timestamps in the CB_GETATTR response.

Fixes: 43df7110f4a9 ("NFSv4: Add CB_GETATTR support for delegated attributes")
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
---
Found this while working on the delstid patches for nfsd.
---
 fs/nfs/callback_xdr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 29c49a7e5fe1..246470306172 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -118,7 +118,9 @@ static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap)
 	if (likely(attrlen > 0))
 		bitmap[0] = ntohl(*p++);
 	if (attrlen > 1)
-		bitmap[1] = ntohl(*p);
+		bitmap[1] = ntohl(*p++);
+	if (attrlen > 2)
+		bitmap[2] = ntohl(*p);
 	return 0;
 }
 

---
base-commit: b311c1b497e51a628aa89e7cb954481e5f9dced2
change-id: 20240821-nfs-6-11-188bb4e1f1dd

Best regards,
-- 
Jeff Layton <jlayton@xxxxxxxxxx>