[Devel] [PATCH rh7] net: udpv6: release memcg on destroy

[Vladimir Davydov]

In case of udpv6 we never release the memcg reference taken in
udpv6_prot->init. This leads to memcg leak. Fix it by calling
sock_release_memcg from udpv6_prot->destroy.

https://jira.sw.ru/browse/PSBM-39084

Fixes: ee3396bb65bf ("udp: Charge ingress buffers into cg memory")
Signed-off-by: Vladimir Davydov <vdavydov at parallels.com>
---
 net/ipv6/udp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 4d3754df8737..780e823f9142 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1352,6 +1352,7 @@ void udpv6_destroy_sock(struct sock *sk)
 	}
 
 	inet6_destroy_sock(sk);
+	sock_release_memcg(sk);
 }
 
 /*
-- 
2.1.4