leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pxa168_eth: Allocate receive queue initialized to zero

Browse Source 
Zero pointer in rx_skb or tx_skb is how respective *_deinit() functions find
out that a skb slot is unallocated. If *_init() functions unsuccessfully return
after the allocation (e.g. when subsequent dma_alloc_coherent() is not
successful), this would result in attempt to kfree() invalid pointers.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: Kosta Zertsekel <konszert@marvell.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lubomir Rintel 2013-06-18 19:30:48 +02:00 committed by David S. Miller
parent 776fbcc9cb
commit 451bff2932
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/ethernet/marvell/pxa168_eth.c
View File

@ -1015,7 +1015,7 @@ static int rxq_init(struct net_device *dev)
int rx_desc_num = pep->rx_ring_size;
/* Allocate RX skb rings */
pep->rx_skb = kmalloc(sizeof(*pep->rx_skb) * pep->rx_ring_size,
pep->rx_skb = kzalloc(sizeof(*pep->rx_skb) * pep->rx_ring_size,
GFP_KERNEL);
if (!pep->rx_skb)
return -ENOMEM;
@ -1076,7 +1076,7 @@ static int txq_init(struct net_device *dev)
int size = 0, i = 0;
int tx_desc_num = pep->tx_ring_size;
pep->tx_skb = kmalloc(sizeof(*pep->tx_skb) * pep->tx_ring_size,
pep->tx_skb = kzalloc(sizeof(*pep->tx_skb) * pep->tx_ring_size,
GFP_KERNEL);
if (!pep->tx_skb)
return -ENOMEM;