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authorAlexander Duyck <alexander.h.duyck@intel.com>2016-11-15 05:46:12 -0500
committerDavid S. Miller <davem@davemloft.net>2016-11-16 13:24:50 -0500
commit3114cdfe66c156345b0ae34e2990472f277e0c1b (patch)
tree356e4a21747a35c5e3347cb7fc6bc75c9397d769 /net
parent3b7093346b326e5d3590c7d49f6aefe6fa5b2c9a (diff)
ipv4: Fix memory leak in exception case for splitting tries
Fix a small memory leak that can occur where we leak a fib_alias in the event of us not being able to insert it into the local table. Fixes: 0ddcf43d5d4a0 ("ipv4: FIB Local/MAIN table collapse") Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv4/fib_trie.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 735edc9d41a2..026f309c51e9 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -1743,8 +1743,10 @@ struct fib_table *fib_trie_unmerge(struct fib_table *oldtb)
local_l = fib_find_node(lt, &local_tp, l->key);
if (fib_insert_alias(lt, local_tp, local_l, new_fa,
- NULL, l->key))
+ NULL, l->key)) {
+ kmem_cache_free(fn_alias_kmem, new_fa);
goto out;
+ }
}
/* stop loop if key wrapped back to 0 */