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[Xen-devel] [PATCH] Linux: Fwd: blkfront: Fix an unlikely xenbus crasher
| To: | <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | [Xen-devel] [PATCH] Linux: Fwd: blkfront: Fix an unlikely xenbus crasher |
| From: | "Jan Beulich" <JBeulich@xxxxxxxxxx> |
| Date: | Mon, 01 Mar 2010 09:31:33 +0000 |
| Delivery-date: | Mon, 01 Mar 2010 01:32:05 -0800 |
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Getting partition 0 should not fail, but if it does we won't continue.
Signed-off-by: Daniel Stodden <daniel.stodden@xxxxxxxxxx>
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
--- a/drivers/xen/blkfront/blkfront.c
+++ b/drivers/xen/blkfront/blkfront.c
@@ -285,8 +285,10 @@
case XenbusStateClosing:
bd = bdget(info->dev);
- if (bd == NULL)
+ if (bd == NULL) {
xenbus_dev_fatal(dev, -ENODEV, "bdget failed");
+ break;
+ }
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,17)
down(&bd->bd_sem);
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