netdev - [PATCH v3] myri10ge: fix an incorrect free for skb in myri10ge_sw

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Message-Id: <20220406035556.730-1-xiam0nd.tong@gmail.com>
Date:   Wed,  6 Apr 2022 11:55:56 +0800
From:   Xiaomeng Tong <xiam0nd.tong@...il.com>
To:     christopher.lee@...i.com, davem@...emloft.net, kuba@...nel.org,
        pabeni@...hat.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xiaomeng Tong <xiam0nd.tong@...il.com>
Subject: [PATCH v3] myri10ge: fix an incorrect free for skb in myri10ge_sw_tso

All remaining skbs should be released when myri10ge_xmit fails to
transmit a packet. Fix it within another skb_list_walk_safe.

Signed-off-by: Xiaomeng Tong <xiam0nd.tong@...il.com>
---

changes since v2:
 - free all remaining skbs. (Xiaomeng Tong)

changes since v1:
 - remove the unneeded assignmnets. (Xiaomeng Tong)

v2:https://lore.kernel.org/lkml/20220405000553.21856-1-xiam0nd.tong@gmail.com/
v1:https://lore.kernel.org/lkml/20220319052350.26535-1-xiam0nd.tong@gmail.com/

---
 drivers/net/ethernet/myricom/myri10ge/myri10ge.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index 50ac3ee2577a..21d2645885ce 100644
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -2903,11 +2903,9 @@ static netdev_tx_t myri10ge_sw_tso(struct sk_buff *skb,
 		status = myri10ge_xmit(curr, dev);
 		if (status != 0) {
 			dev_kfree_skb_any(curr);
-			if (segs != NULL) {
-				curr = segs;
-				segs = next;
+			skb_list_walk_safe(next, curr, next) {
 				curr->next = NULL;
-				dev_kfree_skb_any(segs);
+				dev_kfree_skb_any(curr);
 			}
 			goto drop;
 		}
-- 
2.17.1