[PATCH] x86_64: fix bound check IDT gate

Other than apparently commonly assumed, the bound instruction does not
require the corresponding IDT entry to have DPL 3.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index bf337f493189535f12f47f40b1ff93a94f4b26ff..7ecc72a48cddb626bff2de089294299c55e1f40c 100644 (file)
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -881,8 +881,8 @@ void __init trap_init(void)
        set_intr_gate_ist(1,&debug,DEBUG_STACK);
        set_intr_gate_ist(2,&nmi,NMI_STACK);
        set_system_gate(3,&int3);
-       set_system_gate(4,&overflow);   /* int4-5 can be called from all */
-       set_system_gate(5,&bounds);
+       set_system_gate(4,&overflow);   /* int4 can be called from all */
+       set_intr_gate(5,&bounds);
        set_intr_gate(6,&invalid_op);
        set_intr_gate(7,&device_not_available);
        set_intr_gate_ist(8,&double_fault, DOUBLEFAULT_STACK);