1 files changed, 7 insertions, 1 deletions
diff --git a/js/src/vm/GeckoProfiler.cpp b/js/src/vm/GeckoProfiler.cpp
index 330bcd1fa6..dbf1eb9081 100644
--- a/js/src/vm/GeckoProfiler.cpp
+++ b/js/src/vm/GeckoProfiler.cpp
@@ -57,9 +57,15 @@ static jit::JitFrameLayout* GetTopProfilingJitFrame(jit::JitActivation* act) {
     return nullptr;
   }
 
+  // Skip if the activation has no JS frames. This can happen if there's only a
+  // TrampolineNative frame because these are skipped by the profiling frame
+  // iterator.
   jit::JSJitProfilingFrameIterator jitIter(
       (jit::CommonFrameLayout*)iter.frame().fp());
-  MOZ_ASSERT(!jitIter.done());
+  if (jitIter.done()) {
+    return nullptr;
+  }
+
   return jitIter.framePtr();
 }