[PATCH 4.9 29/78] scsi: iscsi: Do not put host in iscsi_set_flashnode_param()

From: Greg Kroah-Hartman
Date: Tue Sep 01 2020 - 11:17:02 EST


From: Jing Xiangfeng <jingxiangfeng@xxxxxxxxxx>

[ Upstream commit 68e12e5f61354eb42cfffbc20a693153fc39738e ]

If scsi_host_lookup() fails we will jump to put_host which may cause a
panic. Jump to exit_set_fnode instead.

Link: https://lore.kernel.org/r/20200615081226.183068-1-jingxiangfeng@xxxxxxxxxx
Reviewed-by: Mike Christie <michael.christie@xxxxxxxxxx>
Signed-off-by: Jing Xiangfeng <jingxiangfeng@xxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/scsi_transport_iscsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 42b97f1196232..c2bce3f6eaace 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -3191,7 +3191,7 @@ static int iscsi_set_flashnode_param(struct iscsi_transport *transport,
pr_err("%s could not find host no %u\n",
__func__, ev->u.set_flashnode.host_no);
err = -ENODEV;
- goto put_host;
+ goto exit_set_fnode;
}

idx = ev->u.set_flashnode.flashnode_idx;
--
2.25.1