[PATCH XENSTORE v1 01/10] xenstore: add missing NULL check

[Norbert Manthey]

In case of allocation error, we should not dereference the obtained
NULL pointer. Hence, fail early.

This bug was discovered and resolved using Coverity Static Analysis
Security Testing (SAST) by Synopsys, Inc.

Signed-off-by: Norbert Manthey <nmant...@amazon.de>
Reviewed-by: Thomas Friebel <frieb...@amazon.de>
Reviewed-by: Julien Grall <jgr...@amazon.co.uk>

---
 tools/xenstore/xenstored_core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/xenstore/xenstored_core.c b/tools/xenstore/xenstored_core.c
--- a/tools/xenstore/xenstored_core.c
+++ b/tools/xenstore/xenstored_core.c
@@ -1818,6 +1818,10 @@ static int check_store_(const char *name, struct 
hashtable *reachable)
 
                struct hashtable * children =
                        create_hashtable(16, hash_from_key_fn, keys_equal_fn);
+               if (!children) {
+                       log("check_store create table: ENOMEM");
+                       return ENOMEM;
+               }
 
                if (!remember_string(reachable, name)) {
                        hashtable_destroy(children, 0);
-- 
2.17.1




Amazon Development Center Germany GmbH
Krausenstr. 38
10117 Berlin
Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss
Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B
Sitz: Berlin
Ust-ID: DE 289 237 879