When realloc()ing the hashtable for expanding it, zero out all the new
bytes at the end of the table, not only one byte for each new element.

Fixes: 186f0e02a1c ("Added hashtable implementation")
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
---
This might be a backport candidate
---
 tools/xenstore/hashtable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/xenstore/hashtable.c b/tools/xenstore/hashtable.c
index 39fb3ed338..6ac336eff1 100644
--- a/tools/xenstore/hashtable.c
+++ b/tools/xenstore/hashtable.c
@@ -136,7 +136,8 @@ hashtable_expand(struct hashtable *h)
                    realloc(h->table, newsize * sizeof(struct entry *));
         if (NULL == newtable) { (h->primeindex)--; return 0; }
         h->table = newtable;
-        memset(newtable[h->tablelength], 0, newsize - h->tablelength);
+        memset(newtable + h->tablelength, 0,
+               (newsize - h->tablelength) * sizeof(*newtable));
         for (i = 0; i < h->tablelength; i++) {
             for (pE = &(newtable[i]), e = *pE; e != NULL; e = *pE) {
                 index = indexFor(newsize,e->h);
-- 
2.31.1