netdev - [PATCH net-next] net/ipv6: stop leaking percpu memory in fib6 info

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Message-Id: <1539000363-25333-1-git-send-email-rppt@linux.vnet.ibm.com>
Date:   Mon,  8 Oct 2018 15:06:03 +0300
From:   Mike Rapoport <rppt@...ux.vnet.ibm.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     David Ahern <dsahern@...il.com>, netdev@...r.kernel.org,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>, stable@...r.kernel.org
Subject: [PATCH net-next] net/ipv6: stop leaking percpu memory in fib6 info

The fib6_info_alloc() function allocates percpu memory to hold per CPU
pointers to rt6_info, but this memory is never freed. Fix it.

Fixes: a64efe142f5e ("net/ipv6: introduce fib6_info struct and helpers")

Signed-off-by: Mike Rapoport <rppt@...ux.vnet.ibm.com>
Cc: stable@...r.kernel.org
---
 net/ipv6/ip6_fib.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index cf709eadc932..cc7de7eb8b9c 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -194,6 +194,8 @@ void fib6_info_destroy_rcu(struct rcu_head *head)
 				*ppcpu_rt = NULL;
 			}
 		}
+
+		free_percpu(f6i->rt6i_pcpu);
 	}
 
 	lwtstate_put(f6i->fib6_nh.nh_lwtstate);
-- 
2.7.4