From: Chuck Lever Date: Tue, 1 Aug 2017 15:59:58 +0000 (-0400) Subject: nfsd: Const-ify NFSv4 encoding and decoding ops arrays X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c1df609d9dcec5dcb89ee3091edc3671da1c9996;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git nfsd: Const-ify NFSv4 encoding and decoding ops arrays Close an attack vector by moving the arrays of encoding and decoding methods to read-only memory. Signed-off-by: Chuck Lever Signed-off-by: J. Bruce Fields --- diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 18b9c2fad29a..0c3b935d100f 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1780,7 +1780,7 @@ nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) 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, @@ -4224,7 +4224,7 @@ typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); * 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,