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-rw-r--r--hw/ide/ahci.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index 56a4867cd0..e1ae36f7cd 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -1376,6 +1376,13 @@ static int ahci_state_post_load(void *opaque, int version_id)
*/
if (ad->busy_slot == -1) {
check_cmd(s, i);
+ } else {
+ /* We are in the middle of a command, and may need to access
+ * the command header in guest memory again. */
+ if (ad->busy_slot < 0 || ad->busy_slot >= AHCI_MAX_CMDS) {
+ return -1;
+ }
+ ad->cur_cmd = &((AHCICmdHdr *)ad->lst)[ad->busy_slot];
}
}