From: William Dean <williamsukatube@gmail.com>
Date: Sat, 23 Jul 2022 14:40:27 +0800
Subject: scsi: lpfc: Check the return value of alloc_workqueue()
Git-commit: f00e0d7714895d10790e2bac4df00727ddb9abff
Patch-mainline: v6.0-rc1
References: git-fixes

The function alloc_workqueue() in lpfc_sli4_driver_resource_setup() can
fail, but there is no check of its return value. The return value should be
checked.

Link: https://lore.kernel.org/r/20220723064027.2956623-1-williamsukatube@163.com
Fixes: 3cee98db2610 ("scsi: lpfc: Fix crash on driver unload in wq free")
Reported-by: Hacash Robot <hacashRobot@santino.com>
Reviewed-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: William Dean <williamsukatube@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
 drivers/scsi/lpfc/lpfc_init.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 4a0eadd1c22c..c69c5a0979ec 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -7948,6 +7948,8 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
 
 	/* The lpfc_wq workqueue for deferred irq use */
 	phba->wq = alloc_workqueue("lpfc_wq", WQ_MEM_RECLAIM, 0);
+	if (!phba->wq)
+		return -ENOMEM;
 
 	/*
 	 * Initialize timers used by driver