scsi: mpt3sas: Fix error return code of mpt3sas_base_attach()

When kzalloc() returns NULL, no error return code of mpt3sas_base_attach()
is assigned. To fix this bug, r is assigned with -ENOMEM in this case.

Link: https://lore.kernel.org/r/20210308035241.3288-1-baijiaju1990@gmail.com
Fixes: c696f7b83ede ("scsi: mpt3sas: Implement device_remove_in_progress check in IOCTL path")
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index ac066f8..ac0eef9 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -7806,14 +7806,18 @@ mpt3sas_base_attach(struct MPT3SAS_ADAPTER *ioc)
                ioc->pend_os_device_add_sz++;
        ioc->pend_os_device_add = kzalloc(ioc->pend_os_device_add_sz,
            GFP_KERNEL);
-       if (!ioc->pend_os_device_add)
+       if (!ioc->pend_os_device_add) {
+               r = -ENOMEM;
                goto out_free_resources;
+       }
 
        ioc->device_remove_in_progress_sz = ioc->pend_os_device_add_sz;
        ioc->device_remove_in_progress =
                kzalloc(ioc->device_remove_in_progress_sz, GFP_KERNEL);
-       if (!ioc->device_remove_in_progress)
+       if (!ioc->device_remove_in_progress) {
+               r = -ENOMEM;
                goto out_free_resources;
+       }
 
        ioc->fwfault_debug = mpt3sas_fwfault_debug;