bpo-41995: Fix null ptr deref in tracemalloc_copy_trace() (GH-22660)

Fix a null pointer dereference in tracemalloc_copy_trace()
of _tracemalloc.
(cherry picked from commit 66c28f50c76e4f23af7146e0e580457c5fd6bde7)

Co-authored-by: Yunlongs <lylgood@foxmail.com>

diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index fc91622d3925b8424880b48bdd8f0f3a411fad9c..04f6c243b5ca4d1fdb539ffadb4ba8244846f875 100644 (file)
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -1199,7 +1199,7 @@ tracemalloc_copy_trace(_Py_hashtable_t *traces,
     trace_t *trace = (trace_t *)value;
 
     trace_t *trace2 = raw_malloc(sizeof(trace_t));
-    if (traces2 == NULL) {
+    if (trace2 == NULL) {
         return -1;
     }
     *trace2 = *trace;