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authorFugang Duan <fugang.duan@nxp.com>2021-05-12 04:43:59 +0200
committerDavid S. Miller <davem@davemloft.net>2021-05-12 23:01:50 +0200
commit619fee9eb13b5d29e4267cb394645608088c28a8 (patch)
tree388b92d947a8a7d161bbe727b8247d8b68e1da79 /drivers/net/ethernet/freescale
parentnet: packetmmap: fix only tx timestamp on request (diff)
downloadlinux-619fee9eb13b5d29e4267cb394645608088c28a8.tar.xz
linux-619fee9eb13b5d29e4267cb394645608088c28a8.zip
net: fec: fix the potential memory leak in fec_enet_init()
If the memory allocated for cbd_base is failed, it should free the memory allocated for the queues, otherwise it causes memory leak. And if the memory allocated for the queues is failed, it can return error directly. Fixes: 59d0f7465644 ("net: fec: init multi queue date structure") Signed-off-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale')
-rw-r--r--drivers/net/ethernet/freescale/fec_main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index f2065f9d02e6..a2ada39c22d7 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -3290,7 +3290,9 @@ static int fec_enet_init(struct net_device *ndev)
return ret;
}
- fec_enet_alloc_queue(ndev);
+ ret = fec_enet_alloc_queue(ndev);
+ if (ret)
+ return ret;
bd_size = (fep->total_tx_ring_size + fep->total_rx_ring_size) * dsize;
@@ -3298,7 +3300,8 @@ static int fec_enet_init(struct net_device *ndev)
cbd_base = dmam_alloc_coherent(&fep->pdev->dev, bd_size, &bd_dma,
GFP_KERNEL);
if (!cbd_base) {
- return -ENOMEM;
+ ret = -ENOMEM;
+ goto free_queue_mem;
}
/* Get the Ethernet address */
@@ -3376,6 +3379,10 @@ static int fec_enet_init(struct net_device *ndev)
fec_enet_update_ethtool_stats(ndev);
return 0;
+
+free_queue_mem:
+ fec_enet_free_queue(ndev);
+ return ret;
}
#ifdef CONFIG_OF