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authorKashyap, Desai <kashyap.desai@lsi.com>2010-03-18 19:22:45 +0530
committerJames Bottomley <James.Bottomley@suse.de>2010-04-11 09:24:10 -0500
commit08f5c5c23d52aa385ff304becffb0e0c37cedfe5 (patch)
tree5e6b65987b69ee4c240b413fc682b37935bd13e5
parentf8c23bde85091b696e72d00bc6aa16216a9862f7 (diff)
[SCSI] mptfusion: sanity check for vdevice pointer is added
Added sanity checks before accessing vdevice and added vdevice->deleted setting for mptfc. Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
-rw-r--r--drivers/message/fusion/mptctl.c7
-rw-r--r--drivers/message/fusion/mptfc.c17
-rw-r--r--drivers/message/fusion/mptscsih.c2
3 files changed, 26 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptctl.c b/drivers/message/fusion/mptctl.c
index e7fab5de16e7..f06b29193b4e 100644
--- a/drivers/message/fusion/mptctl.c
+++ b/drivers/message/fusion/mptctl.c
@@ -1329,6 +1329,8 @@ mptctl_getiocinfo (unsigned long arg, unsigned int data_size)
if (ioc->sh) {
shost_for_each_device(sdev, ioc->sh) {
vdevice = sdev->hostdata;
+ if (vdevice == NULL || vdevice->vtarget == NULL)
+ continue;
if (vdevice->vtarget->tflags &
MPT_TARGET_FLAGS_RAID_COMPONENT)
continue;
@@ -1450,6 +1452,8 @@ mptctl_gettargetinfo (unsigned long arg)
if (!maxWordsLeft)
continue;
vdevice = sdev->hostdata;
+ if (vdevice == NULL || vdevice->vtarget == NULL)
+ continue;
if (vdevice->vtarget->tflags &
MPT_TARGET_FLAGS_RAID_COMPONENT)
continue;
@@ -1978,6 +1982,9 @@ mptctl_do_mpt_command (struct mpt_ioctl_command karg, void __user *mfPtr)
struct scsi_target *starget = scsi_target(sdev);
VirtTarget *vtarget = starget->hostdata;
+ if (vtarget == NULL)
+ continue;
+
if ((pScsiReq->TargetID == vtarget->id) &&
(pScsiReq->Bus == vtarget->channel) &&
(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index 8b3ff2d43fb3..b5f03ad81568 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -482,6 +482,7 @@ mptfc_register_dev(MPT_ADAPTER *ioc, int channel, FCDevicePage0_t *pg0)
if (vtarget) {
vtarget->id = pg0->CurrentTargetID;
vtarget->channel = pg0->CurrentBus;
+ vtarget->deleted = 0;
}
}
*((struct mptfc_rport_info **)rport->dd_data) = ri;
@@ -1092,6 +1093,8 @@ mptfc_setup_reset(struct work_struct *work)
container_of(work, MPT_ADAPTER, fc_setup_reset_work);
u64 pn;
struct mptfc_rport_info *ri;
+ struct scsi_target *starget;
+ VirtTarget *vtarget;
/* reset about to happen, delete (block) all rports */
list_for_each_entry(ri, &ioc->fc_rports, list) {
@@ -1099,6 +1102,12 @@ mptfc_setup_reset(struct work_struct *work)
ri->flags &= ~MPT_RPORT_INFO_FLAGS_REGISTERED;
fc_remote_port_delete(ri->rport); /* won't sleep */
ri->rport = NULL;
+ starget = ri->starget;
+ if (starget) {
+ vtarget = starget->hostdata;
+ if (vtarget)
+ vtarget->deleted = 1;
+ }
pn = (u64)ri->pg0.WWPN.High << 32 |
(u64)ri->pg0.WWPN.Low;
@@ -1119,6 +1128,8 @@ mptfc_rescan_devices(struct work_struct *work)
int ii;
u64 pn;
struct mptfc_rport_info *ri;
+ struct scsi_target *starget;
+ VirtTarget *vtarget;
/* start by tagging all ports as missing */
list_for_each_entry(ri, &ioc->fc_rports, list) {
@@ -1146,6 +1157,12 @@ mptfc_rescan_devices(struct work_struct *work)
MPT_RPORT_INFO_FLAGS_MISSING);
fc_remote_port_delete(ri->rport); /* won't sleep */
ri->rport = NULL;
+ starget = ri->starget;
+ if (starget) {
+ vtarget = starget->hostdata;
+ if (vtarget)
+ vtarget->deleted = 1;
+ }
pn = (u64)ri->pg0.WWPN.High << 32 |
(u64)ri->pg0.WWPN.Low;
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index b966678e4419..90a1dff7eb84 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -2339,6 +2339,8 @@ mptscsih_slave_destroy(struct scsi_device *sdev)
starget = scsi_target(sdev);
vtarget = starget->hostdata;
vdevice = sdev->hostdata;
+ if (!vdevice)
+ return;
mptscsih_search_running_cmds(hd, vdevice);
vtarget->num_luns--;