[PATCH 5.4.y] ice: Fix a null pointer dereference in ice_copy_and_init_pkg()

[Sasha Levin <sashal@kernel.org>]

From: Haoxiang Li <haoxiang_li2024@163.com>

[ Upstream commit 4ff12d82dac119b4b99b5a78b5af3bf2474c0a36 ]

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@vger.kernel.org
Signed-off-by: Haoxiang Li <haoxiang_li2024@163.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
[ applied the patch to ice_flex_pipe.c instead of ice_ddp.c ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/ice/ice_flex_pipe.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
index 6cfe8eb7f47d..14fba20ab7f3 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
@@ -753,6 +753,8 @@ enum ice_status ice_copy_and_init_pkg(struct ice_hw *hw, const u8 *buf, u32 len)
 		return ICE_ERR_PARAM;
 
 	buf_copy = devm_kmemdup(ice_hw_to_dev(hw), buf, len, GFP_KERNEL);
+	if (!buf_copy)
+		return ICE_ERR_NO_MEMORY;
 
 	status = ice_init_pkg(hw, buf_copy, len);
 	if (status) {
-- 
2.39.5