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| author | Eric Dumazet <edumazet@google.com> | 2012-06-07 22:59:59 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-16 09:03:47 -0700 |
| commit | a459fdd31c96993f6fcee4879eb20bc1e7bac2ed (patch) | |
| tree | ba2b87f0ad2a6d714d299b9902236018f9c6485d /drivers | |
| parent | 43d950abdab622bf97d0a0c233809f88a3eb6240 (diff) | |
| download | linux-3.10-a459fdd31c96993f6fcee4879eb20bc1e7bac2ed.tar.gz linux-3.10-a459fdd31c96993f6fcee4879eb20bc1e7bac2ed.tar.bz2 linux-3.10-a459fdd31c96993f6fcee4879eb20bc1e7bac2ed.zip | |
be2net: fix a race in be_xmit()
[ Upstream commit cd8f76c0a0c6fce0b2cf23c9bd0123f91453f46d ]
As soon as hardware is notified of a transmit, we no longer can assume
skb can be dereferenced, as TX completion might have freed the packet.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Sathya Perla <sathya.perla@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 528a886bc2c..1bbf6b3eca9 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -731,6 +731,8 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, copied = make_tx_wrbs(adapter, txq, skb, wrb_cnt, dummy_wrb); if (copied) { + int gso_segs = skb_shinfo(skb)->gso_segs; + /* record the sent skb in the sent_skb table */ BUG_ON(txo->sent_skb_list[start]); txo->sent_skb_list[start] = skb; @@ -748,8 +750,7 @@ static netdev_tx_t be_xmit(struct sk_buff *skb, be_txq_notify(adapter, txq->id, wrb_cnt); - be_tx_stats_update(txo, wrb_cnt, copied, - skb_shinfo(skb)->gso_segs, stopped); + be_tx_stats_update(txo, wrb_cnt, copied, gso_segs, stopped); } else { txq->head = start; dev_kfree_skb_any(skb); |