Avoid beyond bounds copy while caching ACL
When attempting to cache ACLs returned from the server, if the bitmap
size + the ACL size is greater than a PAGE_SIZE but the ACL size itself
is smaller than a PAGE_SIZE, we can read past the buffer page boundary.
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reported-by: Jian Li <jiali@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 9312dd7..203c096 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4940,7 +4940,7 @@
res->acl_len = attrlen;
goto out;
}
- dprintk("NFS: acl reply: attrlen %zu > page_len %u\n",
+ dprintk("NFS: acl reply: attrlen %u > page_len %zu\n",
attrlen, page_len);
return -EINVAL;
}