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| author | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-04-01 14:03:26 -0400 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@hammerspace.com> | 2021-04-14 09:36:29 -0400 |
| commit | eb3d58c68e39fad68d8054e0324eb06d82dcedbb (patch) | |
| tree | bebaae6d3ad6fad610fc1ac0e1662327f39ca823 /fs/nfs/nfs3xdr.c | |
| parent | 3d66bae156a652be18e278f3c88bc3e069ae824b (diff) | |
| download | linux-eb3d58c68e39fad68d8054e0324eb06d82dcedbb.tar.gz | |
NFSv4: Catch and trace server filehandle encoding errors
If the server returns a filehandle with an invalid length, then trace that, and return an EREMOTEIO error. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs/nfs/nfs3xdr.c')
| -rw-r--r-- | fs/nfs/nfs3xdr.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/nfs/nfs3xdr.c b/fs/nfs/nfs3xdr.c index 83ad62c81fc7..e6eca1d7481b 100644 --- a/fs/nfs/nfs3xdr.c +++ b/fs/nfs/nfs3xdr.c @@ -433,7 +433,7 @@ static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) if (unlikely(!p)) return -EIO; length = be32_to_cpup(p++); - if (unlikely(length > NFS3_FHSIZE)) + if (unlikely(length > NFS3_FHSIZE || length == 0)) goto out_toobig; p = xdr_inline_decode(xdr, length); if (unlikely(!p)) @@ -442,7 +442,7 @@ static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) memcpy(fh->data, p, length); return 0; out_toobig: - dprintk("NFS: file handle size (%u) too big\n", length); + trace_nfs_xdr_bad_filehandle(xdr, NFSERR_BADHANDLE); return -E2BIG; } |