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scsi: qedf: Fix NULL dereference in error handling

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[ Upstream commit f025312b089474a54e4859f3453771314d9e3d4f ]

Smatch reported:

drivers/scsi/qedf/qedf_main.c:3056 qedf_alloc_global_queues()
warn: missing unwind goto?

At this point in the function, nothing has been allocated so we can return
directly. In particular the "qedf->global_queues" have not been allocated
so calling qedf_free_global_queues() will lead to a NULL dereference when
we check if (!gl[i]) and "gl" is NULL.

Fixes: 61d8658b4a ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.")
Signed-off-by: Jinhong Zhu <jinhongzhu@hust.edu.cn>
Link: https://lore.kernel.org/r/20230502140022.2852-1-jinhongzhu@hust.edu.cn
Reviewed-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jinhong Zhu 2023-05-02 22:00:21 +08:00 committed by Greg Kroah-Hartman
parent 6f64558b43
commit 961c8370c5
1 changed files with 1 additions and 2 deletions
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3
drivers/scsi/qedf/qedf_main.c
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@ -2914,9 +2914,8 @@ static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
* addresses of our queues * addresses of our queues
*/ */
if (!qedf->p_cpuq) { if (!qedf->p_cpuq) {
status = -EINVAL;
QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n"); QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
goto mem_alloc_failure; return -EINVAL;
} }
qedf->global_queues = kzalloc((sizeof(struct global_queue *) qedf->global_queues = kzalloc((sizeof(struct global_queue *)