Author: mav
Date: Tue May 17 19:00:09 2016
New Revision: 300072
URL: https://svnweb.freebsd.org/changeset/base/300072

Log:
  Fix NULL-dereference panic if VESA reports zero modes.
  
  MFC after:    1 week

Modified:
  head/sys/dev/fb/vesa.c

Modified: head/sys/dev/fb/vesa.c
==============================================================================
--- head/sys/dev/fb/vesa.c      Tue May 17 18:42:38 2016        (r300071)
+++ head/sys/dev/fb/vesa.c      Tue May 17 19:00:09 2016        (r300072)
@@ -1025,7 +1025,8 @@ vesa_bios_init(void)
 
                ++modes;
        }
-       vesa_vmode[modes].vi_mode = EOT;
+       if (vesa_vmode != NULL)
+               vesa_vmode[modes].vi_mode = EOT;
 
        if (bootverbose)
                printf("VESA: %d mode(s) found\n", modes);
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