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[PATCH] i386: NMI pointer comparison fix

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Instruction pointer comparisons for the NMI on debug stack check/fixup
were incorrect.

From: Jan Beulich <jbeulich@novell.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Zwane Mwaikambo <zwane@holomorphy.com>
Acked-by: "Seth, Rohit" <rohit.seth@intel.com>
Cc: Zachary Amsden <zach@vmware.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Beulich 2005-11-13 16:06:52 -08:00 committed by Linus Torvalds
parent 27d99f7ead
commit e27182088e
1 changed files with 3 additions and 4 deletions
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7
arch/i386/kernel/entry.S
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@ -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