Thread (840 messages) 840 messages, 15 authors, 2021-07-20
STALE1810d REVIEWED: 2 (2M)

[PATCH 5.13 526/800] net: mana: Fix a memory leak in an error handling path in mana_create_txq()

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-12 08:50:44
Also in: lkml
Subsystem: hyper-v/azure core and drivers, networking drivers, the rest · Maintainers: "K. Y. Srinivasan", Haiyang Zhang, Wei Liu, Dexuan Cui, Long Li, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

From: Christophe JAILLET <redacted>

[ Upstream commit b90788459cd6d140171b046f0b37fad341ade0a3 ]

If this test fails we must free some resources as in all the other error
handling paths of this function.

Fixes: ca9c54d2d6a5 ("net: mana: Add a driver for Microsoft Azure Network Adapter (MANA)")
Signed-off-by: Christophe JAILLET <redacted>
Reviewed-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/microsoft/mana/mana_en.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/microsoft/mana/mana_en.c b/drivers/net/ethernet/microsoft/mana/mana_en.c
index 04d067243457..1ed25e48f616 100644
--- a/drivers/net/ethernet/microsoft/mana/mana_en.c
+++ b/drivers/net/ethernet/microsoft/mana/mana_en.c
@@ -1230,8 +1230,10 @@ static int mana_create_txq(struct mana_port_context *apc,
 
 		cq->gdma_id = cq->gdma_cq->id;
 
-		if (WARN_ON(cq->gdma_id >= gc->max_num_cqs))
-			return -EINVAL;
+		if (WARN_ON(cq->gdma_id >= gc->max_num_cqs)) {
+			err = -EINVAL;
+			goto out;
+		}
 
 		gc->cq_table[cq->gdma_id] = cq->gdma_cq;
 
-- 
2.30.2


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