[PATCH] scsi: qedi: qedi_main.c: modify the code flow in 'qedi_alloc_global_queues'

From: Peizhi Li
Date: Sat Apr 22 2023 - 06:17:48 EST


When goto the mem_alloc_failure, it will result in a null pointer
reference to variable 'gl' in function 'qedi_free_global_queues',
due to the 'qedi->global_queues' not being allocated.

Fix this by returning -EINVAL directly.

Signed-off-by: Peizhi Li <meetlpz@xxxxxxxxxxx>
Reviewed-by: Dongliang Mu <dzm91@xxxxxxxxxxx>
Reviewed-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
The issue is found by static analysis and remains untested. Meanwhile,
this patches is similar with qedf which Jinhong Zhu fixed already.

https://lore.kernel.org/all/20230417135518.184595-1-jinhongzhu@xxxxxxxxxxx/
drivers/scsi/qedi/qedi_main.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/qedi/qedi_main.c b/drivers/scsi/qedi/qedi_main.c
index f2ee49756df8..34f38e0f1c7d 100644
--- a/drivers/scsi/qedi/qedi_main.c
+++ b/drivers/scsi/qedi/qedi_main.c
@@ -1637,8 +1637,7 @@ static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
* addresses of our queues
*/
if (!qedi->p_cpuq) {
- status = -EINVAL;
- goto mem_alloc_failure;
+ return -EINVAL;
}

qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
--
2.25.1