[PATCH 4/7] megaraid_sas: Add array boundary check for SystemPD

[adam radford]

James/linux-scsi,

The following patch for megaraid_sas adds an array boundary check for
the SystemPD build path.

Signed-off-by: Adam Radford <aradf...@gmail.com>

diff -Naur scsi-misc/drivers/scsi/megaraid/megaraid_sas_fusion.c
scsi-misc.new/drivers/scsi/megaraid/megaraid_sas_fusion.c
--- scsi-misc/drivers/scsi/megaraid/megaraid_sas_fusion.c       2012-10-01
17:05:01.643925591 -0700
+++ scsi-misc.new/drivers/scsi/megaraid/megaraid_sas_fusion.c   2012-10-01
17:06:40.300862878 -0700
@@ -1508,7 +1508,8 @@
        local_map_ptr = fusion->ld_map[(instance->map_id & 1)];

        /* Check if this is a system PD I/O */
-       if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
+       if (scmd->device->channel < MEGASAS_MAX_PD_CHANNELS &&
+           instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
                io_request->Function = 0;
                io_request->DevHandle =
                        local_map_ptr->raidMap.devHndlInfo[device_id].curDevHdl;

megaraid_sas.patch4
Description: Binary data