Changeset 89392 in vbox for trunk

Timestamp:

May 31, 2021 10:55:21 AM (4 years ago)

Author:

vboxsync

Message:

BIOS: Allocate bounce buffer before using it.

File:

• trunk/src/VBox/Devices/PC/BIOS/eltorito.c (modified) (1 diff)

trunk/src/VBox/Devices/PC/BIOS/eltorito.c

@@ -483 +483 @@
                       cdemu->emulated_drive, cdemu->media, cdemu->ilba);
 
+    /* Now that we know El Torito emulation is in use, allocate buffer. */
+    cdemu->ptr_unaligned = cdemu_bounce_buf_alloc() :> 0;
+    if (cdemu->ptr_unaligned == NULL)
+        return 13;
+
     /* Read the disk image's boot sector into memory. */
     error = cdemu_read(device, 0, nbsectors, MK_FP(boot_segment,0));
     if (error != 0)
-        return 13;
-
-    cdemu->ptr_unaligned = cdemu_bounce_buf_alloc() :> 0;
-    if (cdemu->ptr_unaligned == NULL)
         return 14;