[PATCH 4.18 057/135] net/ipv6: stop leaking percpu memory in fib6 info

Greg Kroah-Hartman
2018-10-16T17:12:45Z

From: Mike Rapoport <rppt@linux.vnet.ibm.com>

[ Upstream commit 7abab7b9b498650404800a08765f44929fee8f31 ]

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@linux.vnet.ibm.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/ipv6/ip6_fib.c | 2 ++
1 file changed, 2 insertions(+)

--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -196,6 +196,8 @@ void fib6_info_destroy_rcu(struct rcu_he
*ppcpu_rt = NULL;
}
}
+
+ free_percpu(f6i->rt6i_pcpu);
}

lwtstate_put(f6i->fib6_nh.nh_lwtstate);