2017-04-24 07:05:56

by Pan Bian

[permalink] [raw]
Subject: [PATCH 1/2] net: team: fix memory leak in team_nl_send_port_list_get

In function team_nl_send_port_list_get(), pointer skb keeps the return
value of nlmsg_new(). When the call to genlmsg_put() fails, the memory
is not freed. This will result in a memory leak bug. This patch fixes
it.

Fixes: fbd69cda90e7 ("team: fix memory leak")

Signed-off-by: Pan Bian <[email protected]>
---
drivers/net/team/team.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index f8c81f1..dd3a2e9 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2634,8 +2634,10 @@ static int team_nl_send_port_list_get(struct team *team, u32 portid, u32 seq,

hdr = genlmsg_put(skb, portid, seq, &team_nl_family, flags | NLM_F_MULTI,
TEAM_CMD_PORT_LIST_GET);
- if (!hdr)
+ if (!hdr) {
+ nlmsg_free(skb);
return -EMSGSIZE;
+ }

if (nla_put_u32(skb, TEAM_ATTR_TEAM_IFINDEX, team->dev->ifindex))
goto nla_put_failure;
--
1.9.1