diff --git a/libs/utils/src/CallStack.cpp b/libs/utils/src/CallStack.cpp
index 94c70ba259..798fd64285 100644
--- a/libs/utils/src/CallStack.cpp
+++ b/libs/utils/src/CallStack.cpp
@@ -149,14 +149,16 @@ io::ostream& operator<<(io::ostream& stream, CallStack const& UTILS_UNUSED calls
         void* pc = (void*)callstack[i];
 #if HAS_DLADDR
         if (::dladdr(pc, &info)) {
-            char const* exe = strrchr(info.dli_fname, '/');
+            char const* fname = info.dli_fname ? info.dli_fname : "<unknown>";
+            char const* sname = info.dli_sname ? info.dli_sname : "<unknown>";
+            char const* exe = strrchr(fname, '/');
             snprintf(buf, sizeof(buf), "#%u\t%-31s %*p %s + %zd\n",
                     unsigned(i),
-                    exe ? exe + 1 : info.dli_fname,
+                    exe ? exe + 1 : fname,
                     int(2 + sizeof(void*)*2),
                     pc,
-                    CallStack::demangle(info.dli_sname).c_str(),
-                    (char *)callstack[i] - (char *)info.dli_saddr);
+                    CallStack::demangle(sname).c_str(),
+                    (char *)callstack[i] - (char *)(info.dli_saddr ? info.dli_saddr : pc));
             stream << buf;
         } else
 #endif