stacktrace: Protect clear_stackmap with hook_guard

This patch is to prevent from unexpected crash when clearing stackmap. Signed-off-by: Honggyu Kim <[email protected]>
honggyukim · Dec 3, 2022 · 18bf46f · 18bf46f
1 parent 18c2b05
commit 18bf46f
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/stacktrace.cc b/stacktrace.cc
@@ -373,7 +373,12 @@ void dump_stackmap(enum alloc_sort_order order, bool flamegraph)
 void clear_stackmap(void)
 {
 	std::lock_guard<std::recursive_mutex> lock(container_mutex);
+	auto* tfs = &thread_flags;
+
+	tfs->hook_guard = true;
 
 	stackmap.clear();
 	addrmap.clear();
+
+	tfs->hook_guard = false;
 }