From 17e465034a174d23e08cbb964aeda5e41e5d84ca Mon Sep 17 00:00:00 2001 From: Roel Kluin Date: Wed, 11 Aug 2010 14:17:31 -0700 Subject: [PATCH] score: fix dereference of NULL pointer in local_flush_tlb_page() Don't dereference vma if it's NULL. Signed-off-by: Roel Kluin Cc: Chen Liqin Cc: Lennox Wu Cc: Arnd Bergmann Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/score/mm/tlb-score.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/score/mm/tlb-score.c b/arch/score/mm/tlb-score.c index 4fa5aa5afec..6fdb100244c 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; -- 2.20.1