From: Roel Kluin <roel.kluin@gmail.com>
To: liqin.chen@sunplusct.com, arnd@arndb.de,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH] score: Fix dereference of NULL pointer in local_flush_tlb_page()
Date: Mon, 08 Feb 2010 22:17:34 +0100 [thread overview]
Message-ID: <4B707F6E.2090108@gmail.com> (raw)
Don't dereference vma if it's NULL.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c
index 4fa5aa5..6fdb100 100644
--- a/arch/score/mm/tlb-score.c
+++ b/arch/score/mm/tlb-score.c
@@ -158,7 +158,7 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
{
- if (!vma || vma->vm_mm->context != 0) {
+ if (vma && vma->vm_mm->context != 0) {
unsigned long flags;
int oldpid, newpid, idx;
unsigned long vma_ASID = vma->vm_mm->context;
reply other threads:[~2010-02-08 21:10 UTC|newest]
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