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score: fix dereference of NULL pointer in local_flush_tlb_page() 

Don't dereference vma if it's NULL.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Chen Liqin <liqin.chen@sunplusct.com>
Cc: Lennox Wu <lennox.wu@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Roel Kluin 2010-08-11 14:17:31 -07:00 committed by Linus Torvalds
parent 7b95809045
commit 17e465034a
1 changed files with 1 additions and 1 deletions
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2
arch/score/mm/tlb-score.c
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@ -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;