[1/2] sh_eth: fix uninitialized arrays in sh_eth_ring_init()

Commit Message

Sergei Shtylyov Oct. 29, 2015, 9:51 p.m. UTC

sh_eth_ring_free()  called in the sh_eth_ring_init()'s error path  expects
the arrays pointed  by sh_eth_private::[rt]x_skbuff to be initialized with
NULLs  but they are allocated with just kmalloc_array() and so left filled
with random data. Use kcalloc() instead.

Signed-off-by: Sergei Shtylyov <[e-mail]>

---
 drivers/net/ethernet/renesas/sh_eth.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)


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Patch

Index: net/drivers/net/ethernet/renesas/sh_eth.c
===================================================================
--- net.orig/drivers/net/ethernet/renesas/sh_eth.c
+++ net/drivers/net/ethernet/renesas/sh_eth.c
@@ -1212,15 +1212,15 @@  static int sh_eth_ring_init(struct net_d
 		mdp->rx_buf_sz += NET_IP_ALIGN;
 
 	/* Allocate RX and TX skb rings */
-	mdp->rx_skbuff = kmalloc_array(mdp->num_rx_ring,
-				       sizeof(*mdp->rx_skbuff), GFP_KERNEL);
+	mdp->rx_skbuff = kcalloc(mdp->num_rx_ring, sizeof(*mdp->rx_skbuff),
+				 GFP_KERNEL);
 	if (!mdp->rx_skbuff) {
 		ret = -ENOMEM;
 		return ret;
 	}
 
-	mdp->tx_skbuff = kmalloc_array(mdp->num_tx_ring,
-				       sizeof(*mdp->tx_skbuff), GFP_KERNEL);
+	mdp->tx_skbuff = kcalloc(mdp->num_tx_ring, sizeof(*mdp->tx_skbuff),
+				 GFP_KERNEL);
 	if (!mdp->tx_skbuff) {
 		ret = -ENOMEM;
 		goto skb_ring_free;