From: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
Code in qla24xx_report_id_acquisition() incorrectly assumed that
upon completion of list iteration (with no match), the 'pos'
(vp) variable passed to list_for_each_entry() would be set to
NULL. In this context, if the firmware were to return an
unrecognized vp_idx, the follow-on assignments to vp-members
could result in corruption of the structure.
Signed-off-by: Andrew Vasquez <andrew.vasquez@xxxxxxxxxx>
Signed-off-by: Saurav Kashyap <saurav.kashyap@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_mbx.c | 11 ++++++++---
1 files changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 2b6782d..dc0fe52 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -3141,6 +3141,7 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *vp;
unsigned long flags;
+ int found;
ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x10b6,
"Entered %s.\n", __func__);
@@ -3176,13 +3177,17 @@ qla24xx_report_id_acquisition(scsi_qla_host_t *vha,
return;
}
+ found = 0;
spin_lock_irqsave(&ha->vport_slock, flags);
- list_for_each_entry(vp, &ha->vp_list, list)
- if (vp_idx == vp->vp_idx)
+ list_for_each_entry(vp, &ha->vp_list, list) {
+ if (vp_idx == vp->vp_idx) {
+ found = 1;
break;
+ }
+ }
spin_unlock_irqrestore(&ha->vport_slock, flags);
- if (!vp)
+ if (!found)
return;
vp->d_id.b.domain = rptid_entry->port_id[2];
--
1.7.7
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