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-rw-r--r--hw/scsi/megasas.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 6ce598cd69..b531d88a9b 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -504,7 +504,7 @@ static MegasasCmd *megasas_enqueue_frame(MegasasState *s,
cmd->pa = frame;
/* Map all possible frames */
cmd->frame = pci_dma_map(pcid, frame, &frame_size_p, 0);
- if (frame_size_p != frame_size) {
+ if (!cmd->frame || frame_size_p != frame_size) {
trace_megasas_qf_map_failed(cmd->index, (unsigned long)frame);
if (cmd->frame) {
megasas_unmap_frame(s, cmd);