[PATCH 4.14 111/343] staging: r8822be: check kzalloc return or bail

[Greg Kroah-Hartman]

From: Nicholas Mc Guire <hofrat@xxxxxxxxx>

[ Upstream commit e4b08e16b7d9d030b6475ef48f94d734a39f3c81 ]

The kzalloc() in halmac_parse_psd_data_88xx() can fail and return NULL
so check the psd_set->data after allocation and if allocation failed
return HALMAC_CMD_PROCESS_ERROR.

Signed-off-by: Nicholas Mc Guire <hofrat@xxxxxxxxx>
Fixes: 938a0447f094 ("staging: r8822be: Add code for halmac sub-drive")
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 .../staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c b/drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c
index 544f638ed3efb..15091ee587dbf 100644
--- a/drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c
+++ b/drivers/staging/rtlwifi/halmac/halmac_88xx/halmac_func_88xx.c
@@ -2492,8 +2492,11 @@ halmac_parse_psd_data_88xx(struct halmac_adapter *halmac_adapter, u8 *c2h_buf,
 	segment_size = (u8)PSD_DATA_GET_SEGMENT_SIZE(c2h_buf);
 	psd_set->data_size = total_size;
 
-	if (!psd_set->data)
+	if (!psd_set->data) {
 		psd_set->data = kzalloc(psd_set->data_size, GFP_KERNEL);
+		if (!psd_set->data)
+			return HALMAC_CMD_PROCESS_ERROR;
+	}
 
 	if (segment_id == 0)
 		psd_set->segment_size = segment_size;
-- 
2.20.1