From: Michał Mirosław Date: Tue, 17 Jan 2012 10:00:40 +0000 (+0000) Subject: net: fix NULL-deref in WARN() in skb_gso_segment() X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=65e9d2faab70d07b9a38ac6ed298f191d24541fc;p=~shefty%2Frdma-dev.git net: fix NULL-deref in WARN() in skb_gso_segment() Bug was introduced in commit c8f44affb7244f2ac3e703cab13d55ede27621bb. Signed-off-by: Michał Mirosław Signed-off-by: David S. Miller --- diff --git a/net/core/dev.c b/net/core/dev.c index 17db2f2e523..115dee1d985 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1889,6 +1889,7 @@ EXPORT_SYMBOL(skb_set_dev); static void skb_warn_bad_offload(const struct sk_buff *skb) { + static const netdev_features_t null_features = 0; struct net_device *dev = skb->dev; const char *driver = ""; @@ -1897,8 +1898,8 @@ static void skb_warn_bad_offload(const struct sk_buff *skb) WARN(1, "%s: caps=(%pNF, %pNF) len=%d data_len=%d gso_size=%d " "gso_type=%d ip_summed=%d\n", - driver, dev ? &dev->features : NULL, - skb->sk ? &skb->sk->sk_route_caps : NULL, + driver, dev ? &dev->features : &null_features, + skb->sk ? &skb->sk->sk_route_caps : &null_features, skb->len, skb->data_len, skb_shinfo(skb)->gso_size, skb_shinfo(skb)->gso_type, skb->ip_summed); }