@@ -1867,10 +1867,13 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
size = address - vma->vm_start;
grow = (address - vma->vm_end) >> PAGE_SHIFT;
- error = acct_stack_growth(vma, size, grow);
- if (!error) {
- vma->vm_end = address;
- perf_event_mmap(vma);
+ error = -ENOMEM;
+ if (vma->vm_pgoff + (size >> PAGE_SHIFT) >= vma->vm_pgoff) {
+ error = acct_stack_growth(vma, size, grow);
+ if (!error) {
+ vma->vm_end = address;
+ perf_event_mmap(vma);
+ }
}
}
vma_unlock_anon_vma(vma);