Commit 4c23efb4 authored Feb 27, 2015 by Nicholas Bellinger Committed by Sasha Levin Mar 28, 2015

target/pscsi: Fix NULL pointer dereference in get_device_type



[ Upstream commit 215a8fe4198f607f34ecdbc9969dae783d8b5a61 ]

This patch fixes a NULL pointer dereference OOPs with pSCSI backends
within target_core_stat.c code.  The bug is caused by a configfs attr
read if no pscsi_dev_virt->pdv_sd has been configured.

Reported-by: Olaf Hering <olaf@aepfle.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

parent af8524b0

drivers/target/target_core_pscsi.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1120,7 +1120,7 @@ static u32 pscsi_get_device_type(struct se_device *dev)
		struct pscsi_dev_virt *pdv = PSCSI_DEV(dev);
		struct scsi_device *sd = pdv->pdv_sd;

		return sd->type;
		return (sd) ? sd->type : TYPE_NO_LUN;
		}

		static sector_t pscsi_get_blocks(struct se_device *dev)