From 2f30c00702aca3229e1157718675f0ee56d2a931 Mon Sep 17 00:00:00 2001 From: Jan Beulich Date: Sat, 21 Jul 2007 17:10:21 +0200 Subject: [PATCH] i386: allow debuggers to access the vsyscall page with compat vDSO Signed-off-by: Jan Beulich Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/i386/kernel/sysenter.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/i386/kernel/sysenter.c b/arch/i386/kernel/sysenter.c index ff4ee6f3326b..6deb159d08e0 100644 --- a/arch/i386/kernel/sysenter.c +++ b/arch/i386/kernel/sysenter.c @@ -336,7 +336,9 @@ struct vm_area_struct *get_gate_vma(struct task_struct *tsk) int in_gate_area(struct task_struct *task, unsigned long addr) { - return 0; + const struct vm_area_struct *vma = get_gate_vma(task); + + return vma && addr >= vma->vm_start && addr < vma->vm_end; } int in_gate_area_no_task(unsigned long addr)