This is a note to let you know that I've just added the patch titled ipv4: Fix memory leak in exception case for splitting tries to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: ipv4-fix-memory-leak-in-exception-case-for-splitting-tries.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 3114cdfe66c156345b0ae34e2990472f277e0c1b Mon Sep 17 00:00:00 2001 From: Alexander Duyck <alexander.h.duyck@xxxxxxxxx> Date: Tue, 15 Nov 2016 05:46:12 -0500 Subject: ipv4: Fix memory leak in exception case for splitting tries From: Alexander Duyck <alexander.h.duyck@xxxxxxxxx> commit 3114cdfe66c156345b0ae34e2990472f277e0c1b upstream. 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@xxxxxxxxxx> Signed-off-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxx> Acked-by: Eric Dumazet <edumazet@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- net/ipv4/fib_trie.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -1714,8 +1714,10 @@ struct fib_table *fib_trie_unmerge(struc 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 */ Patches currently in stable-queue which might be from alexander.h.duyck@xxxxxxxxx are queue-4.4/ipv4-fix-memory-leak-in-exception-case-for-splitting-tries.patch