linux-kernel - [PATCH 2/11] Fix gate_vma.vm

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Date:	Sat, 13 Jan 2007 21:33:06 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Linus Torvalds <torvalds@...l.org>, Andrew Morton <akpm@...l.org>
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 2/11] Fix gate_vma.vm_flags


This patch fixes the initialization of gate_vma.vm_flags and
gate_vma.vm_page_prot to reflect reality.  This makes the "[vdso]" line in
/proc/PID/maps correctly show r-xp instead of ---p, when gate_vma is used
(CONFIG_COMPAT_VDSO on i386).

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 mm/memory.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index af227d2..5beb4b8 100644  
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2606,8 +2606,8 @@ static int __init gate_vma_init(void)
 	gate_vma.vm_mm = NULL;
 	gate_vma.vm_start = FIXADDR_USER_START;
 	gate_vma.vm_end = FIXADDR_USER_END;
-	gate_vma.vm_page_prot = PAGE_READONLY;
-	gate_vma.vm_flags = 0;
+	gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
+	gate_vma.vm_page_prot = __P101;
 	return 0;
 }
 __initcall(gate_vma_init);
-
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