diff options
Diffstat (limited to 'drivers/net/wan/x25_asy.c')
| -rw-r--r-- | drivers/net/wan/x25_asy.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c index 44db8b75a53..fa9fdfa128c 100644 --- a/drivers/net/wan/x25_asy.c +++ b/drivers/net/wan/x25_asy.c @@ -122,13 +122,16 @@ static int x25_asy_change_mtu(struct net_device *dev, int newmtu) { struct x25_asy *sl = netdev_priv(dev); unsigned char *xbuff, *rbuff; - int len = 2 * newmtu; + int len; + if (newmtu > 65534) + return -EINVAL; + + len = 2 * newmtu; xbuff = kmalloc(len + 4, GFP_ATOMIC); rbuff = kmalloc(len + 4, GFP_ATOMIC); if (xbuff == NULL || rbuff == NULL) { - netdev_warn(dev, "unable to grow X.25 buffers, MTU change cancelled\n"); kfree(xbuff); kfree(rbuff); return -ENOMEM; |