linux-kernel - [PATCH] scsi: libsas: Fix error path in sas_notify_lldd_dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 5 Sep 2020 15:58:36 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Dan Williams <dan.j.williams@...el.com>
Cc:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        John Garry <john.garry@...wei.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Jason Yan <yanaijie@...wei.com>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] scsi: libsas: Fix error path in sas_notify_lldd_dev_found()

In sas_notify_lldd_dev_found(), if we can't find a device, then it seems
like the wrong thing to mark the device as found and to increment the
reference count.  None of the callers ever drop the reference in that
situation.

Fixes: 735f7d2fedf5 ("[SCSI] libsas: fix domain_device leak")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/scsi/libsas/sas_discover.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/libsas/sas_discover.c b/drivers/scsi/libsas/sas_discover.c
index cd7c7d269f6f..d0f9e90e3279 100644
--- a/drivers/scsi/libsas/sas_discover.c
+++ b/drivers/scsi/libsas/sas_discover.c
@@ -182,10 +182,11 @@ int sas_notify_lldd_dev_found(struct domain_device *dev)
 		pr_warn("driver on host %s cannot handle device %016llx, error:%d\n",
 			dev_name(sas_ha->dev),
 			SAS_ADDR(dev->sas_addr), res);
+		return res;
 	}
 	set_bit(SAS_DEV_FOUND, &dev->state);
 	kref_get(&dev->kref);
-	return res;
+	return 0;
 }
 
 
-- 
2.28.0