This is a note to let you know that I've just added the patch titled NFSD: Replace READ* macros in nfsd4_decode_write() to the 5.10-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nfsd-replace-read-macros-in-nfsd4_decode_write.patch and it can be found in the queue-5.10 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 9fc31de8ae23b51f974e510eb86c01de25e64395 Author: Chuck Lever <chuck.lever@xxxxxxxxxx> Date: Tue Nov 3 14:44:28 2020 -0500 NFSD: Replace READ* macros in nfsd4_decode_write() [ Upstream commit 244e2befcba80f42c65293b6c56282bb78f9f417 ] Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 231a2628e3e6f..26744b7f0e35c 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1396,22 +1396,23 @@ nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify static __be32 nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) { - DECODE_HEAD; + __be32 status; - status = nfsd4_decode_stateid(argp, &write->wr_stateid); + status = nfsd4_decode_stateid4(argp, &write->wr_stateid); if (status) return status; - READ_BUF(16); - p = xdr_decode_hyper(p, &write->wr_offset); - write->wr_stable_how = be32_to_cpup(p++); + if (xdr_stream_decode_u64(argp->xdr, &write->wr_offset) < 0) + return nfserr_bad_xdr; + if (xdr_stream_decode_u32(argp->xdr, &write->wr_stable_how) < 0) + return nfserr_bad_xdr; if (write->wr_stable_how > NFS_FILE_SYNC) - goto xdr_error; - write->wr_buflen = be32_to_cpup(p++); - + return nfserr_bad_xdr; + if (xdr_stream_decode_u32(argp->xdr, &write->wr_buflen) < 0) + return nfserr_bad_xdr; if (!xdr_stream_subsegment(argp->xdr, &write->wr_payload, write->wr_buflen)) - goto xdr_error; + return nfserr_bad_xdr; - DECODE_TAIL; + return nfs_ok; } static __be32