From: Arkadi Sharshevsky Date: Thu, 12 Jan 2017 08:10:37 +0000 (+0100) Subject: mlxsw: spectrum: Fix memory leak at skb reallocation X-Git-Tag: v4.10-rc5~32^2~27^2~2 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=36bf38d158d3482119b3e159c0619b3c1539b508;p=karo-tx-linux.git mlxsw: spectrum: Fix memory leak at skb reallocation During transmission the skb is checked for headroom in order to add vendor specific header. In case the skb needs to be re-allocated, skb_realloc_headroom() is called to make a private copy of the original, but doesn't release it. Current code assumes that the original skb is released during reallocation and only releases it at the error path which causes a memory leak. Fix this by adding the original skb release to the main path. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Arkadi Sharshevsky Reviewed-by: Ido Schimmel Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c index d768c7b6c6d6..003093abb170 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/spectrum.c +++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum.c @@ -684,6 +684,7 @@ static netdev_tx_t mlxsw_sp_port_xmit(struct sk_buff *skb, dev_kfree_skb_any(skb_orig); return NETDEV_TX_OK; } + dev_consume_skb_any(skb_orig); } if (eth_skb_pad(skb)) {