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[Xen-changelog] [xen-unstable] xsm: Avoid null dereference in flask get_
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| Subject: | [Xen-changelog] [xen-unstable] xsm: Avoid null dereference in flask get_page_sid |
| From: | Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx> |
| Date: | Wed, 15 Sep 2010 07:40:28 -0700 |
| Delivery-date: | Wed, 15 Sep 2010 07:45:32 -0700 |
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1284395242 -3600
# Node ID ec31bb01c4243df239dbdbe362e8296afda91cc0
# Parent e64710373db7182bd8235f0af6dc33b83fd94c95
xsm: Avoid null dereference in flask get_page_sid
From: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
---
xen/xsm/flask/hooks.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
diff -r e64710373db7 -r ec31bb01c424 xen/xsm/flask/hooks.c
--- a/xen/xsm/flask/hooks.c Mon Sep 13 17:26:49 2010 +0100
+++ b/xen/xsm/flask/hooks.c Mon Sep 13 17:27:22 2010 +0100
@@ -340,7 +340,10 @@ static int get_page_sid(struct page_info
default:
/*Pages are implicitly labeled by domain ownership!*/
dsec = d->ssid;
- *sid = dsec->sid;
+ if (dsec)
+ *sid = dsec->sid;
+ else
+ rc = -ENOENT;
break;
}
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