scsi: storvsc: Payload buffer incorrectly sized for 32 bit kernels.
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 will contain junk. Suggested-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Cathy Avery <cavery@redhat.com> Reviewed-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -1495,9 +1495,9 @@ static int storvsc_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *scmnd)
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if (sg_count) {
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if (sg_count > MAX_PAGE_BUFFER_COUNT) {
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payload_sz = (sg_count * sizeof(void *) +
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payload_sz = (sg_count * sizeof(u64) +
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sizeof(struct vmbus_packet_mpb_array));
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payload = kmalloc(payload_sz, GFP_ATOMIC);
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payload = kzalloc(payload_sz, GFP_ATOMIC);
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if (!payload)
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return SCSI_MLQUEUE_DEVICE_BUSY;
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}
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