5.10-stable review patch. If anyone has any objections, please let me know.
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From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit a73bed98413b1d9eb4466f776a56d2fde8b3b2c9 ]
Signed-off-by: Chuck Lever chuck.lever@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/nfsd/nfs4xdr.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index 95c755473899f..149948393ccb1 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -1190,16 +1190,21 @@ nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_d static __be32 nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) { - DECODE_HEAD; + __be32 *p;
- READ_BUF(4); - putfh->pf_fhlen = be32_to_cpup(p++); + if (xdr_stream_decode_u32(argp->xdr, &putfh->pf_fhlen) < 0) + return nfserr_bad_xdr; if (putfh->pf_fhlen > NFS4_FHSIZE) - goto xdr_error; - READ_BUF(putfh->pf_fhlen); - SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); + return nfserr_bad_xdr; + p = xdr_inline_decode(argp->xdr, putfh->pf_fhlen); + if (!p) + return nfserr_bad_xdr; + putfh->pf_fhval = svcxdr_tmpalloc(argp, putfh->pf_fhlen); + if (!putfh->pf_fhval) + return nfserr_jukebox; + memcpy(putfh->pf_fhval, p, putfh->pf_fhlen);
- DECODE_TAIL; + return nfs_ok; }
static __be32