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drivers: net: xen-netfront: fix array initialization bug

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This patch fixes the initialization of an array used in the TX
datapath that was mistakenly initialized together with the
RX datapath arrays. An out of range array access could happen
when RX and TX rings had different sizes.

Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vincenzo Maffione 2014-04-12 11:55:40 +02:00 committed by David S. Miller
parent dcfba949ba
commit 810d8cedcc
1 changed files with 1 additions and 1 deletions
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2
drivers/net/xen-netfront.c
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@ -1291,13 +1291,13 @@ static struct net_device *xennet_create_dev(struct xenbus_device *dev)
for (i = 0; i < NET_TX_RING_SIZE; i++) {
skb_entry_set_link(&np->tx_skbs[i], i+1);
np->grant_tx_ref[i] = GRANT_INVALID_REF;
np->grant_tx_page[i] = NULL;
}
/* Clear out rx_skbs */
for (i = 0; i < NET_RX_RING_SIZE; i++) {
np->rx_skbs[i] = NULL;
np->grant_rx_ref[i] = GRANT_INVALID_REF;
np->grant_tx_page[i] = NULL;
}
/* A grant for every tx ring slot */