dm persistent data: fix shadow_info_leak 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 <[email protected]> Cc: [email protected] Signed-off-by: Alasdair G Kergon <[email protected]>
joekychen · Jul 3, 2012 · 25d7cd6 · 25d7cd6
1 parent 0d200ae
commit 25d7cd6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git 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);