In btbcm_get_board_name() devm_kstrdup() can return NULL due to memory
allocation failure.
Add NULL return check to prevent NULL dereference.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 63fac3343b99 ("Bluetooth: btbcm: Support per-board firmware variants")
Signed-off-by: Aleksandr Mishin <amishin@xxxxxxxxxx>
---
drivers/bluetooth/btbcm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/bluetooth/btbcm.c b/drivers/bluetooth/btbcm.c
index f9a7c790d7e2..84273b7f02e1 100644
--- a/drivers/bluetooth/btbcm.c
+++ b/drivers/bluetooth/btbcm.c
@@ -554,6 +554,8 @@ static const char *btbcm_get_board_name(struct device *dev)
/* get rid of any '/' in the compatible string */
board_type = devm_kstrdup(dev, tmp, GFP_KERNEL);
+ if (!board_type)
+ return NULL;
strreplace(board_type, '/', '-');
of_node_put(root);
--
2.30.2
