mm: fix overflow check in expand_upwards()

[pandora-kernel.git] / mm / mmap.c

diff --git a/mm/mmap.c b/mm/mmap.c
index 4f779f5..ba6583b 100644 (file)
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1717,7 +1717,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
 
        /* Guard against exceeding limits of the address space. */
        address &= PAGE_MASK;
-       if (address >= TASK_SIZE)
+       if (address >= (TASK_SIZE & PAGE_MASK))
                return -ENOMEM;
        address += PAGE_SIZE;