From dbd7c08db489dc724a846cb357bfa69efad47c46 Mon Sep 17 00:00:00 2001
From: Battleplus <3559424769@qq.com>
Date: Mon, 24 Aug 2026 13:15:34 +0800
Subject: [PATCH] fix(crawler): clean up Playwright driver on __aenter__
 failure (#2155)

When browser launch fails inside __aenter__, the exception propagated
without closing the partially-initialized crawler, leaking a live
'node run-driver' child process. Each failed attempt grew the process
count linearly.

Add try/except in __aenter__ to call close() on failure before
re-raising.

Closes #2155
---
 crawl4ai/async_webcrawler.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/crawl4ai/async_webcrawler.py b/crawl4ai/async_webcrawler.py
index 8216d19bc..8b61b46e4 100644
--- a/crawl4ai/async_webcrawler.py
+++ b/crawl4ai/async_webcrawler.py
@@ -197,7 +197,17 @@ async def close(self):
         await self.crawler_strategy.__aexit__(None, None, None)
 
     async def __aenter__(self):
-        return await self.start()
+        try:
+            return await self.start()
+        except Exception:
+            # Ensure partially-initialised Playwright driver is cleaned up
+            # when browser launch fails inside __aenter__.  Without this,
+            # each failed attempt leaks a live `node run-driver` child. (#2155)
+            try:
+                await self.close()
+            except Exception:
+                pass
+            raise
 
     async def __aexit__(self, exc_type, exc_val, exc_tb):
         await self.close()