[Xen-changelog] Fix a race that crash domU by calling xenbus_probe twice if it receive event

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User vhanquez@xxxxxxxxxxxxxxxxxxxxxxx
# Node ID e92b363402f9d208cc940e13b35e669dc571899f
# Parent  4d4a700bea7a31af470c4e79b366f791dead450b
Fix a race that crash domU by calling xenbus_probe twice if it receive event
between xs_init and setting xenbus_running

Signed-off-by: Vincent Hanquez <vincent@xxxxxxxxxxxxx>

diff -r 4d4a700bea7a -r e92b363402f9 
linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c
--- a/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c    Sat Mar 18 
10:12:45 2006
+++ b/linux-2.6-xen-sparse/drivers/xen/xenbus/xenbus_probe.c    Sat Mar 18 
13:56:34 2006
@@ -1049,6 +1049,8 @@
                if (xsd_port_intf)
                        xsd_port_intf->read_proc = xsd_port_read;
        }
+       else
+               xenstored_ready = 1;
 
        /* Initialize the interface to xenstore. */
        err = xs_init();
@@ -1058,10 +1060,8 @@
                return err;
        }
 
-       if (!dom0) {
-               xenstored_ready = 1;
+       if (!dom0)
                xenbus_probe(NULL);
-       }
 
        return 0;
 }

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