From: Patrick McHardy <kaber@trash.net>
To: "David S. Miller" <davem@davemloft.net>
Cc: Linux Netdev List <netdev@vger.kernel.org>
Subject: net: fix network drivers ndo_start_xmit() return values (part 6)
Date: Fri, 12 Jun 2009 17:20:01 +0200 [thread overview]
Message-ID: <4A327221.5040306@trash.net> (raw)
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A single hamradio driver that appears to be unmaintained.
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commit 2a3f9e1eb41a809168916bd70d3c24707d89a34b
Author: Patrick McHardy <kaber@trash.net>
Date: Fri Jun 12 17:19:15 2009 +0200
net: fix network drivers ndo_start_xmit() return values (part 6)
Fix up hamradio drivers that return an errno value to dev_queue_xmit(), causing
it to print a warning an free the skb.
- bpqether: skb is freed: use after free
Compile tested only.
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/drivers/net/hamradio/bpqether.c b/drivers/net/hamradio/bpqether.c
index d509b37..5105548 100644
--- a/drivers/net/hamradio/bpqether.c
+++ b/drivers/net/hamradio/bpqether.c
@@ -274,7 +274,7 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
if ((newskb = skb_realloc_headroom(skb, AX25_BPQ_HEADER_LEN)) == NULL) {
printk(KERN_WARNING "bpqether: out of memory\n");
kfree_skb(skb);
- return -ENOMEM;
+ return NETDEV_TX_OK;
}
if (skb->sk != NULL)
@@ -294,7 +294,7 @@ static int bpq_xmit(struct sk_buff *skb, struct net_device *dev)
if ((dev = bpq_get_ether_dev(dev)) == NULL) {
dev->stats.tx_dropped++;
kfree_skb(skb);
- return -ENODEV;
+ return NETDEV_TX_OK;
}
skb->protocol = ax25_type_trans(skb, dev);
reply other threads:[~2009-06-12 15:20 UTC|newest]
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