linux-kernel - [PATCH] RDMA/cxgb4: fix dst refcount leak in pass_accept

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Message-Id: <20251215153356.1783489-1-vulab@iscas.ac.cn>
Date: Mon, 15 Dec 2025 15:33:56 +0000
From: Wentao Liang <vulab@...as.ac.cn>
To: bharat@...lsio.com,
	jgg@...pe.ca,
	leon@...nel.org
Cc: linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Wentao Liang <vulab@...as.ac.cn>,
	stable@...r.kernel.org
Subject: [PATCH] RDMA/cxgb4: fix dst refcount leak in pass_accept_req() error path

Add missing dst_release() when alloc_ep_skb_list() fails to prevent
reference count leak of the dst obtained from route lookup.

Fixes: 4a740838bf44 ("RDMA/iw_cxgb4: Low resource fixes for connection manager")
Cc: stable@...r.kernel.org
Signed-off-by: Wentao Liang <vulab@...as.ac.cn>
---
 drivers/infiniband/hw/cxgb4/cm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index b3b45c49077d..3490b8920cf0 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -2665,6 +2665,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
 	}
 	goto out;
 fail:
+	dst_release(dst);
 	c4iw_put_ep(&child_ep->com);
 reject:
 	reject_cr(dev, hwtid, skb);
-- 
2.34.1