On a 32 bit kernel sizeof(void *) is not 64 bits as hv_mpb_array
requires. Also the buffer needs to be cleared or the upper bytes
could contain junk.
Suggested-by: Vitaly Kuznets <vkuznets@xxxxxxxxxx>
Signed-off-by: Cathy Avery <cavery@xxxxxxxxxx>
---
drivers/scsi/storvsc_drv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 8ccfc9e..b4a8c9d 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1495,11 +1495,12 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
if (sg_count) {
if (sg_count > MAX_PAGE_BUFFER_COUNT) {
- payload_sz = (sg_count * sizeof(void *) +
+ payload_sz = (sg_count * sizeof(u64) +
sizeof(struct vmbus_packet_mpb_array));
payload = kmalloc(payload_sz, GFP_ATOMIC);
if (!payload)
return SCSI_MLQUEUE_DEVICE_BUSY;
+ memset(payload, 0, payload_sz);
}
payload->range.len = length;
--
2.5.0
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