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| author | David S. Miller <davem@davemloft.net> | 2005-08-05 04:12:48 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-08-05 04:12:48 -0700 |
| commit | b7656e7f2944984befa3ab99a5b99f99a23b302b (patch) | |
| tree | bd7281aac296d0d0f7eac7989726f540318236fc /net | |
| parent | 2f60f8d3573ff90fe5d75a6d11fd2add1248e7d6 (diff) | |
| download | linux-b7656e7f2944984befa3ab99a5b99f99a23b302b.tar.gz linux-b7656e7f2944984befa3ab99a5b99f99a23b302b.tar.bz2 linux-b7656e7f2944984befa3ab99a5b99f99a23b302b.zip | |
[IPV4]: Fix memory leak during fib_info hash expansion.
When we grow the tables, we forget to free the olds ones
up.
Noticed by Yan Zheng.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/fib_semantics.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c index c886b28ba9f5..e278cb9d0075 100644 --- a/net/ipv4/fib_semantics.c +++ b/net/ipv4/fib_semantics.c @@ -593,10 +593,13 @@ static void fib_hash_move(struct hlist_head *new_info_hash, struct hlist_head *new_laddrhash, unsigned int new_size) { + struct hlist_head *old_info_hash, *old_laddrhash; unsigned int old_size = fib_hash_size; - unsigned int i; + unsigned int i, bytes; write_lock(&fib_info_lock); + old_info_hash = fib_info_hash; + old_laddrhash = fib_info_laddrhash; fib_hash_size = new_size; for (i = 0; i < old_size; i++) { @@ -636,6 +639,10 @@ static void fib_hash_move(struct hlist_head *new_info_hash, fib_info_laddrhash = new_laddrhash; write_unlock(&fib_info_lock); + + bytes = old_size * sizeof(struct hlist_head *); + fib_hash_free(old_info_hash, bytes); + fib_hash_free(old_laddrhash, bytes); } struct fib_info * |