Thread (261 messages) 261 messages, 12 authors, 2d ago
WARM2d

[PATCH GSoC RFC v13 01/12] transport-helper: fix memory leak of helper on disconnect

From: Pablo Sabater <hidden>
Date: 2026-06-19 14:56:49
Subsystem: the rest · Maintainer: Linus Torvalds

disconnect_helper() only frees data inside of the if(data->helper)
block [1]. When the transport is disconnected without the helper
being fully started, data->name allocated in transport_helper_init()
is never freed.

Move FREE_AND_NULL(data->name) outside the conditional block so it's
always freed on disconnect.

[1]: https://lore.kernel.org/git/05fbadbae2184479c87c37675dde7bd79b3e32ab.1716465556.git.ps@pks.im/ (local)

Mentored-by: Karthik Nayak [off-list ref]
Mentored-by: Chandra Pratap [off-list ref]
Signed-off-by: Pablo Sabater <redacted>
---
 transport-helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/transport-helper.c b/transport-helper.c
index 0fa0eb2d72..8a71354d50 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -266,9 +266,9 @@ static int disconnect_helper(struct transport *transport)
 		close(data->helper->out);
 		fclose(data->out);
 		res = finish_command(data->helper);
-		FREE_AND_NULL(data->name);
 		FREE_AND_NULL(data->helper);
 	}
+	FREE_AND_NULL(data->name);
 	return res;
 }
 
-- 
2.54.0
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