[PATCH 6.0 0473/1073] NFSv4.2: Set the correct size scratch buffer for decoding READ_PLUS

Greg Kroah-Hartman
2022-12-28T15:55:59Z

From: Anna Schumaker <Anna.Schumaker@Netapp.com>

[ Upstream commit 36357fe74ef736524a29fbd3952948768510a8b9 ]

The scratch_buf array is 16 bytes, but I was passing 32 to the
xdr_set_scratch_buffer() function. Fix this by using sizeof(), which is
what I probably should have been doing this whole time.

Fixes: d3b00a802c84 ("NFS: Replace the READ_PLUS decoding code")
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/nfs/nfs42xdr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/nfs42xdr.c b/fs/nfs/nfs42xdr.c
index b56f05113d36..f742c7a5745e 100644
--- a/fs/nfs/nfs42xdr.c
+++ b/fs/nfs/nfs42xdr.c
@@ -1134,7 +1134,7 @@ static int decode_read_plus(struct xdr_stream *xdr, struct nfs_pgio_res *res)
if (!segs)
return -ENOMEM;

- xdr_set_scratch_buffer(xdr, &scratch_buf, 32);
+ xdr_set_scratch_buffer(xdr, &scratch_buf, sizeof(scratch_buf));
status = -EIO;
for (i = 0; i < segments; i++) {
status = decode_read_plus_segment(xdr, &segs[i]);
--
2.35.1