From: Keir Fraser <keir@xensource.com>
Date: Thu, 25 Oct 2007 16:27:57 +0000 (+0100)
Subject: xentrace: Fix race in updating consumer ring index.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14828^2~40
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=5afede5ce640deb26e258c2d2c9dbbecef0fc0a5;p=xen.git

xentrace: Fix race in updating consumer ring index.
From: George Dunlap <gdunlap@xensource.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
---

diff --git a/tools/xentrace/xentrace.c b/tools/xentrace/xentrace.c
index 17df72fe9d..5e7a0c5207 100644
--- a/tools/xentrace/xentrace.c
+++ b/tools/xentrace/xentrace.c
@@ -394,7 +394,7 @@ int monitor_tbufs(int outfd)
             }
 
             mb(); /* read buffer, then update cons. */
-            meta[i]->cons = meta[i]->prod;
+            meta[i]->cons = prod;
         }
 
         nanosleep(&opts.poll_sleep, NULL);