[PATCH 5/7] net/9p/usbg: fix out_req buffer leak in disable_usb9pfs

[Michael Grzeschik <mgr@kernel.org>]

usb9pfs->out_req is allocated with alloc_ep_req(), which also
allocates the request's data buffer (req->buf). disable_usb9pfs()
frees it with plain usb_ep_free_request(), which only frees the
usb_request structure itself and leaks req->buf on every close.

Use free_ep_req() instead, matching the allocator, as documented by
its own comment ("Requests allocated via alloc_ep_req() *must* be
freed by free_ep_req()").

Fixes: a3be076dc174 ("net/9p/usbg: Add new usb gadget function transport")
Cc: stable@vger.kernel.org
Assisted-by: Claude:claude-opus-4.8
Signed-off-by: Michael Grzeschik <mgr@kernel.org>
---
 net/9p/trans_usbg.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/9p/trans_usbg.c b/net/9p/trans_usbg.c
index af113746d2fc..9bcad638d827 100644
--- a/net/9p/trans_usbg.c
+++ b/net/9p/trans_usbg.c
@@ -284,7 +284,7 @@ static void disable_usb9pfs(struct f_usb9pfs *usb9pfs)
 	}
 
 	if (usb9pfs->out_req) {
-		usb_ep_free_request(usb9pfs->out_ep, usb9pfs->out_req);
+		free_ep_req(usb9pfs->out_ep, usb9pfs->out_req);
 		usb9pfs->out_req = NULL;
 	}
 

-- 
2.53.0