lguest: beyond ARRAY_SIZE of cpu->arch.gdt
authorRoel Kluin <roel.kluin@gmail.com>
Tue, 19 May 2009 23:45:45 +0000 (01:45 +0200)
committerRusty Russell <rusty@rustcorp.com.au>
Fri, 12 Jun 2009 12:57:04 +0000 (22:27 +0930)
Do not go beyond ARRAY_SIZE of cpu->arch.gdt

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
drivers/lguest/segments.c

index 7ede64ffeef9e02b54ced2c2d024ccf17d9d59cd..482ed5a18750659e07f7bda54a90429822079b6f 100644 (file)
@@ -150,7 +150,7 @@ void load_guest_gdt_entry(struct lg_cpu *cpu, u32 num, u32 lo, u32 hi)
 {
        /* We assume the Guest has the same number of GDT entries as the
         * Host, otherwise we'd have to dynamically allocate the Guest GDT. */
-       if (num > ARRAY_SIZE(cpu->arch.gdt))
+       if (num >= ARRAY_SIZE(cpu->arch.gdt))
                kill_guest(cpu, "too many gdt entries %i", num);
 
        /* Set it up, then fix it. */