i386 NMI pointer comparison fix
PATCH 1/1 i386 NMI pointer comparison fix
Instruction pointer comparisons for the NMI on debug stack check/fixup were incorrect.
From: Jan Beulich <[email protected]>
(actual patch attached)
Instruction pointer comparisons for the NMI on debug stack check/fixup were incorrect.
From: Jan Beulich <[email protected]>
arch/i386/kernel/entry.S renamed from home/jbeulich/tmp/linux-2.6.14/arch/i386/kernel/entry.S +3 -4
@@ -560,11 +560,10 @@ nmi_stack_fixup: nmi_debug_stack_check: cmpw $__KERNEL_CS,16(%esp) jne nmi_stack_correct - cmpl $debug - 1,(%esp) - jle nmi_stack_correct + cmpl $debug,(%esp) + jb nmi_stack_correct cmpl $debug_esp_fix_insn,(%esp) - jle nmi_debug_stack_fixup -nmi_debug_stack_fixup: + ja nmi_stack_correct FIX_STACK(24,nmi_stack_correct, 1) jmp nmi_stack_correct