* [PATCH] i386: allow debuggers to access the vsyscall page with compat vDSO
@ 2007-07-04 12:14 Jan Beulich
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From: Jan Beulich @ 2007-07-04 12:14 UTC (permalink / raw)
To: Andi Kleen; +Cc: linux-kernel
Signed-off-by: Jan Beulich <jbeulich@novell.com>
arch/i386/kernel/sysenter.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
--- linux-2.6.22-rc7/arch/i386/kernel/sysenter.c 2007-07-03 10:57:29.000000000 +0200
+++ 2.6.22-rc7-i386-in-gate-area/arch/i386/kernel/sysenter.c 2007-07-04 11:39:35.000000000 +0200
@@ -336,7 +336,9 @@ struct vm_area_struct *get_gate_vma(stru
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)
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