From b0194cea194b510c675ca05415da15cff57afe47 Mon Sep 17 00:00:00 2001 From: Ana Rey Date: Mon, 2 Dec 2013 11:45:14 +0100 Subject: iptables: nft: fix memory leaks in nft_fini Those errors are shown with valgrind tool: valgrind --leak-check=full xtables -A INPUT -i eth0 -p tcp --dport 80 ==12554== 40 bytes in 1 blocks are still reachable in loss record 1 of 10 ==12554== at 0x4C2935B: malloc (vg_replace_malloc.c:270) ==12554== by 0x574D755: mnl_nlmsg_batch_start (nlmsg.c:447) ==12554== by 0x416520: nft_action (nft.c:2281) ==12554== by 0x41355E: xtables_main (xtables-standalone.c:75) ==12554== by 0x5B87994: (below main) (libc-start.c:260) ==12554== 135,168 bytes in 1 blocks are still reachable in loss record 9 of 10 ==12554== at 0x4C2935B: malloc (vg_replace_malloc.c:270) ==12554== by 0x415A24: mnl_nft_batch_alloc (nft.c:102) ==12554== by 0x416520: nft_action (nft.c:2281) ==12554== by 0x41355E: xtables_main (xtables-standalone.c:75) ==12554== by 0x5B87994: (below main) (libc-start.c:260) These objects are allocated from nft_init but they were not released appropriately in the exit path. Signed-off-by: Ana Rey Signed-off-by: Pablo Neira Ayuso --- iptables/nft.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/iptables/nft.c b/iptables/nft.c index 0599beb8..a015947f 100644 --- a/iptables/nft.c +++ b/iptables/nft.c @@ -618,6 +618,8 @@ int nft_init(struct nft_handle *h, struct builtin_table *t) void nft_fini(struct nft_handle *h) { mnl_socket_close(h->nl); + free(mnl_nlmsg_batch_head(h->batch)); + mnl_nlmsg_batch_stop(h->batch); } int nft_table_add(struct nft_handle *h, const struct nft_table *t) -- cgit v1.2.3