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authorSubash Abhinov Kasiviswanathan <subashab@codeaurora.org>2017-12-05 13:41:17 -0700
committerDavid S. Miller <davem@davemloft.net>2017-12-05 18:03:53 -0500
commitc20a548792f15f8d8e38cd74356301c6db0d241f (patch)
tree6cac4cb3e41c0a55f25e1e7c35af6c168c8b432a /drivers/net/ethernet/qualcomm
parentc9d3fe9da094a9a7a3d3cd365b334b822e05f5e8 (diff)
downloadlinux-c20a548792f15f8d8e38cd74356301c6db0d241f.tar.bz2
net: qualcomm: rmnet: Fix leak on transmit failure
If a skb in transmit path does not have sufficient headroom to add the map header, the skb is not sent out and is never freed. Fixes: ceed73a2cf4a ("drivers: net: ethernet: qualcomm: rmnet: Initial implementation") Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qualcomm')
-rw-r--r--drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
index 29842ccc91a9..08e4afc0ab39 100644
--- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
+++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
@@ -126,12 +126,12 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
if (skb_headroom(skb) < required_headroom) {
if (pskb_expand_head(skb, required_headroom, 0, GFP_KERNEL))
- return RMNET_MAP_CONSUMED;
+ goto fail;
}
map_header = rmnet_map_add_map_header(skb, additional_header_len, 0);
if (!map_header)
- return RMNET_MAP_CONSUMED;
+ goto fail;
if (port->egress_data_format & RMNET_EGRESS_FORMAT_MUXING) {
if (mux_id == 0xff)
@@ -143,6 +143,10 @@ static int rmnet_map_egress_handler(struct sk_buff *skb,
skb->protocol = htons(ETH_P_MAP);
return RMNET_MAP_SUCCESS;
+
+fail:
+ kfree_skb(skb);
+ return RMNET_MAP_CONSUMED;
}
static void