Messages in this thread |  | | Date | Mon, 3 Oct 2016 17:51:12 +0200 | From | Oleg Nesterov <> | Subject | Re: [PATCH v4 1/2] mm, proc: Fix region lost in /proc/self/smaps |
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On 10/01, Robert Ho wrote: > > --- a/fs/proc/task_mmu.c > +++ b/fs/proc/task_mmu.c > @@ -147,7 +147,7 @@ m_next_vma(struct proc_maps_private *priv, struct vm_area_struct *vma) > static void m_cache_vma(struct seq_file *m, struct vm_area_struct *vma) > { > if (m->count < m->size) /* vma is copied successfully */ > - m->version = m_next_vma(m->private, vma) ? vma->vm_start : -1UL; > + m->version = m_next_vma(m->private, vma) ? vma->vm_end : -1UL; > } > > static void *m_start(struct seq_file *m, loff_t *ppos) > @@ -175,8 +175,10 @@ static void *m_start(struct seq_file *m, loff_t *ppos) > priv->tail_vma = get_gate_vma(mm); > > if (last_addr) { > - vma = find_vma(mm, last_addr); > - if (vma && (vma = m_next_vma(priv, vma))) > + vma = find_vma(mm, last_addr - 1); > + if (vma && vma->vm_start <= last_addr) > + vma = m_next_vma(priv, vma); > + if (vma) > return vma; > }
Acked-by: Oleg Nesterov <oleg@redhat.com>
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