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Go Back   Linux Archive > Redhat > Device-mapper Development

 
 
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Old 06-19-2012, 01:04 AM
Mike Snitzer
 
Default dm transaction manager: fix shadow_info leaks on dm_tm_destroy

Cleanup the shadow table before destroying the transaction manager.

reference: leak was identified with kmemleak when running
test_discard_random_sectors in the thinp-test-suite.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
---
.../md/persistent-data/dm-transaction-manager.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/md/persistent-data/dm-transaction-manager.c b/drivers/md/persistent-data/dm-transaction-manager.c
index 400fe14..02bf78e 100644
--- a/drivers/md/persistent-data/dm-transaction-manager.c
+++ b/drivers/md/persistent-data/dm-transaction-manager.c
@@ -138,6 +138,9 @@ EXPORT_SYMBOL_GPL(dm_tm_create_non_blocking_clone) ;

void dm_tm_destroy(struct dm_transaction_manager *tm)
{
+ if (!tm->is_clone)
+ wipe_shadow_table(tm);
+
kfree(tm);
}
EXPORT_SYMBOL_GPL(dm_tm_destroy);
--
1.7.4.4

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