[V2,1/2] block/nfs: fix NULL pointer dereference in URI parsing

Commit Message

Peter Lieven Jan. 31, 2017, 3:56 p.m. UTC

parse_uint_full wants to put the parsed value into the
variable passed via its second argument which is NULL.

Fixes: 94d6a7a76e9df9919629428f6c598e2b97d9426c
Cc: [e-mail]
Signed-off-by: Peter Lieven <[e-mail]>
Reviewed-by: Eric Blake <[e-mail]>
---
 block/nfs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Patch

diff --git a/block/nfs.c b/block/nfs.c
index a564340..baaecff 100644
--- a/block/nfs.c
+++ b/block/nfs.c
@@ -108,12 +108,13 @@  static int nfs_parse_uri(const char *filename, QDict *options, Error **errp)
     qdict_put(options, "path", qstring_from_str(uri->path));
 
     for (i = 0; i < qp->n; i++) {
+        unsigned long long val;
         if (!qp->p[i].value) {
             error_setg(errp, "Value for NFS parameter expected: %s",
                        qp->p[i].name);
             goto out;
         }
-        if (parse_uint_full(qp->p[i].value, NULL, 0)) {
+        if (parse_uint_full(qp->p[i].value, &val, 0)) {
             error_setg(errp, "Illegal value for NFS parameter: %s",
                        qp->p[i].name);
             goto out;