[PATCH 9/11] lpfc 8.3.37: Fixed crash due to SLI Port invalid resource count

[PATCH 9/11] lpfc 8.3.37: Fixed crash due to SLI Port invalid resource count

[James Smart]

Fixed system crash due to SLI Port provisioning of invalid resource count


Signed-off-by: James Smart <james.smart@emulex.com>

 ---

 lpfc_sli.c |   28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)


diff -upNr a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
--- a/drivers/scsi/lpfc/lpfc_sli.c	2013-01-02 13:13:08.951087785 -0500
+++ b/drivers/scsi/lpfc/lpfc_sli.c	2013-01-02 13:13:10.046087810 -0500
@@ -5639,6 +5639,13 @@ lpfc_sli4_alloc_resource_identifiers(str
 		}
 		/* RPIs. */
 		count = phba->sli4_hba.max_cfg_param.max_rpi;
+		if (count <= 0) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+					"3279 Invalid provisioning of "
+					"rpi:%d\n", count);
+			rc = -EINVAL;
+			goto err_exit;
+		}
 		base = phba->sli4_hba.max_cfg_param.rpi_base;
 		longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
 		phba->sli4_hba.rpi_bmask = kzalloc(longs *
@@ -5661,6 +5668,13 @@ lpfc_sli4_alloc_resource_identifiers(str
 
 		/* VPIs. */
 		count = phba->sli4_hba.max_cfg_param.max_vpi;
+		if (count <= 0) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+					"3280 Invalid provisioning of "
+					"vpi:%d\n", count);
+			rc = -EINVAL;
+			goto free_rpi_ids;
+		}
 		base = phba->sli4_hba.max_cfg_param.vpi_base;
 		longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
 		phba->vpi_bmask = kzalloc(longs *
@@ -5683,6 +5697,13 @@ lpfc_sli4_alloc_resource_identifiers(str
 
 		/* XRIs. */
 		count = phba->sli4_hba.max_cfg_param.max_xri;
+		if (count <= 0) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+					"3281 Invalid provisioning of "
+					"xri:%d\n", count);
+			rc = -EINVAL;
+			goto free_vpi_ids;
+		}
 		base = phba->sli4_hba.max_cfg_param.xri_base;
 		longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
 		phba->sli4_hba.xri_bmask = kzalloc(longs *
@@ -5706,6 +5727,13 @@ lpfc_sli4_alloc_resource_identifiers(str
 
 		/* VFIs. */
 		count = phba->sli4_hba.max_cfg_param.max_vfi;
+		if (count <= 0) {
+			lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
+					"3282 Invalid provisioning of "
+					"vfi:%d\n", count);
+			rc = -EINVAL;
+			goto free_xri_ids;
+		}
 		base = phba->sli4_hba.max_cfg_param.vfi_base;
 		longs = (count + BITS_PER_LONG - 1) / BITS_PER_LONG;
 		phba->sli4_hba.vfi_bmask = kzalloc(longs *