MXS-3200 Ensure that passed in p to buffer remains valid

The pointer to pointer to GWBUF must in all cases be updated. Otherwise it will lead to 1) access to free data, and 2) a double delete.
2020-10-06 16:43:59 +03:00 · 2020-10-06 16:43:59 +03:00 · 147ed8ef22
commit 147ed8ef22
parent 95792c8185
1 changed files with 1 additions and 0 deletions
--- a/server/modules/routing/schemarouter/schemaroutersession.cc
+++ b/server/modules/routing/schemarouter/schemaroutersession.cc
@ -1026,6 +1026,7 @@ int SchemaRouterSession::inspect_mapping_states(SSRBackend& bref,
            }
            else if (rc == SHOWDB_FATAL_ERROR)
            {
+                *wbuf = writebuf;
                return -1;
            }
            else