scsi: iscsi: Fix reference count leak in iscsi_boot_create_kobj

[ Upstream commit 0267ffce562c8bbf9b57ebe0e38445ad04972890 ]

kobject_init_and_add() takes reference even when it fails. If this
function returns an error, kobject_put() must be called to properly
clean up the memory associated with the object.

Link: https://lore.kernel.org/r/20200528201353.14849-1-wu000273@umn.edu
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/iscsi_boot_sysfs.c b/drivers/scsi/iscsi_boot_sysfs.c
index e4857b7..a64abe3 100644 (file)
--- a/drivers/scsi/iscsi_boot_sysfs.c
+++ b/drivers/scsi/iscsi_boot_sysfs.c
@@ -352,7 +352,7 @@ iscsi_boot_create_kobj(struct iscsi_boot_kset *boot_kset,
        boot_kobj->kobj.kset = boot_kset->kset;
        if (kobject_init_and_add(&boot_kobj->kobj, &iscsi_boot_ktype,
                                 NULL, name, index)) {
-               kfree(boot_kobj);
+               kobject_put(&boot_kobj->kobj);
                return NULL;
        }
        boot_kobj->data = data;