From 905386f82d08f66726912f303f3e6605248c60a3 Mon Sep 17 00:00:00 2001 From: Joe Thornber Date: Fri, 27 Jul 2012 15:08:05 +0100 Subject: [PATCH] dm thin: fix memory leak in process_prepared_mapping error paths Fix memory leak in process_prepared_mapping by always freeing the dm_thin_new_mapping structs from the mapping_pool mempool on the error paths. Signed-off-by: Joe Thornber Cc: stable@vger.kernel.org Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-thin.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c index 93e3e542cff9..423df92f1c19 100644 --- a/drivers/md/dm-thin.c +++ b/drivers/md/dm-thin.c @@ -870,7 +870,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m) if (m->err) { cell_error(m->cell); - return; + goto out; } /* @@ -882,7 +882,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m) if (r) { DMERR("dm_thin_insert_block() failed"); cell_error(m->cell); - return; + goto out; } /* @@ -897,6 +897,7 @@ static void process_prepared_mapping(struct dm_thin_new_mapping *m) } else cell_defer(tc, m->cell, m->data_block); +out: list_del(&m->list); mempool_free(m, tc->pool->mapping_pool); }