From: Keir Fraser <keir.fraser@citrix.com>
Date: Wed, 28 Nov 2007 12:50:24 +0000 (+0000)
Subject: Fix string length check for vsnprintf() in debugtrace_printk().
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14684^2~7
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=ec0ce3927bcf990600c7a11ec1409cedb14b553c;p=xen.git

Fix string length check for vsnprintf() in debugtrace_printk().
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
---

diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c
index 164572ffca..b2d1a7d820 100644
--- a/xen/drivers/char/console.c
+++ b/xen/drivers/char/console.c
@@ -835,7 +835,7 @@ void debugtrace_printk(const char *fmt, ...)
     snprintf(buf, sizeof(buf), "%u ", ++count);
 
     va_start(args, fmt);
-    (void)vsnprintf(buf + strlen(buf), sizeof(buf), fmt, args);
+    (void)vsnprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), fmt, args);
     va_end(args);
 
     if ( debugtrace_send_to_console )