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restore: check that a restorer vma doesn't intersect with target vma-s

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[ xemul: The fix effectively is -- stop scanning the 2nd vma list
         once we see, that the hint's end hits the next vma ]

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin
2012-04-07 00:22:00 +04:00
committed by Pavel Emelyanov
parent 7d3a89970e
commit fa11d76cab
1 changed files with 2 additions and 0 deletions
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cr-restore.c
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@@ -881,6 +881,8 @@ static long restorer_get_vma_hint(pid_t pid, struct list_head *tgt_vma_list,
unsigned long prev_vma_end2 = 0;
list_for_each_entry(s_vma, self_vma_list, list) {
if (prev_vma_end2 + vma_len > t_vma->vma.start)
break;
if (prev_vma_end2 && (prev_vma_end2 >= prev_vma_end) &&
((s_vma->vma.start - prev_vma_end2) > vma_len))
return prev_vma_end2;