[CRIU] [PATCH 22/44] restorer: don't touch VM above TASK_SIZE.

[Alexander Kartashov]

VM above TASK_SIZE is read-only but some areas are mapped on ARM
into the process address space.

Signed-off-by: Alexander Kartashov <alekskartashov at parallels.com>
---
 pie/restorer.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/pie/restorer.c b/pie/restorer.c
index e3bbde1..400f8f5 100644
--- a/pie/restorer.c
+++ b/pie/restorer.c
@@ -399,6 +399,10 @@ long __export_restore_task(struct task_restore_core_args *args)
 			}
 		}
 
+		if (vma_entry->end >= TASK_SIZE) {
+			continue;
+		}
+
 		if (vma_entry->end > premmapped_end) {
 			if (vma_entry->start < premmapped_end)
 				addr = premmapped_end;
@@ -421,6 +425,10 @@ long __export_restore_task(struct task_restore_core_args *args)
 		if (!vma_priv(vma_entry))
 			continue;
 
+		if (vma_entry->end >= TASK_SIZE) {
+			continue;
+		}
+
 		if (vma_entry->start > vma_entry->shmid)
 			break;
 
@@ -438,6 +446,10 @@ long __export_restore_task(struct task_restore_core_args *args)
 		if (!vma_priv(vma_entry))
 			continue;
 
+		if (vma_entry->start > TASK_SIZE) {
+			continue;
+		}
+
 		if (vma_entry->start < vma_entry->shmid)
 			break;
 
-- 
1.7.10.4