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authorJoe Thornber <ejt@redhat.com>2012-07-27 15:08:05 +0100
committerAlasdair G Kergon <agk@redhat.com>2012-07-27 15:08:05 +0100
commit905386f82d08f66726912f303f3e6605248c60a3 (patch)
tree183673431e4a0b76b90488447287cdcf53e1b695
parentc66029f4d4226452e9a7f468650aa1d553525b81 (diff)
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 <ejt@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
-rw-r--r--drivers/md/dm-thin.c5
1 files 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);
}