diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-04-21 13:39:09 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-03-24 10:57:33 +0100 |
| commit | 21bdd575943daef3c951ecd3dd70ef62bb9f065e (patch) | |
| tree | 3c2a19c61d97cddcfcb4c2aa43a192788359dd3b | |
| parent | bff38ff05503e2161d6fe2d6e1979db4e9b80e46 (diff) | |
HSI: ssi_protocol: double free in ssip_pn_xmit()
[ Upstream commit 3026050179a3a9a6f5c892c414b5e36ecf092081 ]
If skb_pad() fails then it frees skb and we don't need to free it again
at the end of the function.
Fixes: dc7bf5d7 ("HSI: Introduce driver for SSI Protocol")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/hsi/clients/ssi_protocol.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/hsi/clients/ssi_protocol.c b/drivers/hsi/clients/ssi_protocol.c index e5c7a969f28b..0cb78f30696b 100644 --- a/drivers/hsi/clients/ssi_protocol.c +++ b/drivers/hsi/clients/ssi_protocol.c @@ -976,7 +976,7 @@ static int ssip_pn_xmit(struct sk_buff *skb, struct net_device *dev) goto drop; /* Pad to 32-bits - FIXME: Revisit*/ if ((skb->len & 3) && skb_pad(skb, 4 - (skb->len & 3))) - goto drop; + goto inc_dropped; /* * Modem sends Phonet messages over SSI with its own endianess... @@ -1028,8 +1028,9 @@ static int ssip_pn_xmit(struct sk_buff *skb, struct net_device *dev) drop2: hsi_free_msg(msg); drop: - dev->stats.tx_dropped++; dev_kfree_skb(skb); +inc_dropped: + dev->stats.tx_dropped++; return 0; } |