[PATCH v2] ice: Fix a null pointer dereference in ice_copy_and_init_pkg()

[Haoxiang Li]

Add check for the return value of devm_kmemdup()
to prevent potential null pointer dereference.

Fixes: c76488109616 ("ice: Implement Dynamic Device Personalization (DDP) download")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Haoxiang Li <haoxiang_li2024@xxxxxxx>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@xxxxxxxxxxxxxxx>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@xxxxxxxxx>
---
Changes in v2:
- modify the Fixes commit number. Thanks, Michal!
---
 drivers/net/ethernet/intel/ice/ice_ddp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_ddp.c b/drivers/net/ethernet/intel/ice/ice_ddp.c
index 59323c019544..351824dc3c62 100644
--- a/drivers/net/ethernet/intel/ice/ice_ddp.c
+++ b/drivers/net/ethernet/intel/ice/ice_ddp.c
@@ -2301,6 +2301,8 @@ enum ice_ddp_state ice_copy_and_init_pkg(struct ice_hw *hw, const u8 *buf,
 		return ICE_DDP_PKG_ERR;
 
 	buf_copy = devm_kmemdup(ice_hw_to_dev(hw), buf, len, GFP_KERNEL);
+	if (!buf_copy)
+		return ICE_DDP_PKG_ERR;
 
 	state = ice_init_pkg(hw, buf_copy, len);
 	if (!ice_is_init_pkg_successful(state)) {
-- 
2.25.1