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dm btree: fix a recursion depth bug in btree walking code
[firefly-linux-kernel-4.4.55.git]
/
drivers
/
md
/
dm-table.c
diff --git
a/drivers/md/dm-table.c
b/drivers/md/dm-table.c
index 9e3a045eb7a229a1b084a205799e16c0e51c54d9..bd88d3dade1ee7ce0dbbe3f9259109575b0a5837 100644
(file)
--- a/
drivers/md/dm-table.c
+++ b/
drivers/md/dm-table.c
@@
-215,6
+215,11
@@
int dm_table_create(struct dm_table **result, fmode_t mode,
num_targets = dm_round_up(num_targets, KEYS_PER_NODE);
+ if (!num_targets) {
+ kfree(t);
+ return -ENOMEM;
+ }
+
if (alloc_targets(t, num_targets)) {
kfree(t);
return -ENOMEM;