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[Xen-devel] [PATCH] xenbus: fix possible crash in xenbus_uevent_backend
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] [PATCH] xenbus: fix possible crash in xenbus_uevent_backend |
| From: | Olaf Hering <olaf@xxxxxxxxx> |
| Date: | Mon, 18 Jul 2011 14:40:59 +0200 |
| Delivery-date: | Mon, 18 Jul 2011 05:48:06 -0700 |
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Fix possible NULL pointer crash in xenbus_uevent_backend().
The variable to check for should probably be bus.
Signed-off-by: Olaf Hering <olaf@xxxxxxxxx>
Index: linux-3.0-rc7-xen-kexec/drivers/xen/xenbus/xenbus_probe_backend.c
===================================================================
--- linux-3.0-rc7-xen-kexec.orig/drivers/xen/xenbus/xenbus_probe_backend.c
+++ linux-3.0-rc7-xen-kexec/drivers/xen/xenbus/xenbus_probe_backend.c
@@ -104,7 +104,7 @@ static int xenbus_uevent_backend(struct
xdev = to_xenbus_device(dev);
bus = container_of(xdev->dev.bus, struct xen_bus_type, bus);
- if (xdev == NULL)
+ if (bus == NULL)
return -ENODEV;
/* stuff we want to pass to /sbin/hotplug */
Index: linux-3.0-rc7-xen-kexec/include/linux/compiler.h
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