Close an attack vector by moving the arrays of encoding and decoding
methods to read-only memory.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/nfs4xdr.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 20fbcab..51e729a 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1780,7 +1780,7 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str
typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
-static nfsd4_dec nfsd4_dec_ops[] = {
+static const nfsd4_dec nfsd4_dec_ops[] = {
[OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
[OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
[OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
@@ -4332,7 +4332,7 @@ static __be32 nfsd4_encode_readv(struct nfsd4_compoundres *resp,
* since we don't need to filter out obsolete ops as this is
* done in the decoding phase.
*/
-static nfsd4_enc nfsd4_enc_ops[] = {
+static const nfsd4_enc nfsd4_enc_ops[] = {
[OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access,
[OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close,
[OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit,
--
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