From 73046cb8d8d04a952c0e2daf068af25cd72786f6 Mon Sep 17 00:00:00 2001
From: allencloud <allen.sun@daocloud.io>
Date: Fri, 18 Mar 2016 00:31:50 +0800
Subject: [PATCH] handle kernel version error in version api

Signed-off-by: allencloud <allen.sun@daocloud.io>
---
 daemon/info.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/daemon/info.go b/daemon/info.go
index 5db37f8a32..057b6cf50f 100644
--- a/daemon/info.go
+++ b/daemon/info.go
@@ -141,9 +141,13 @@ func (daemon *Daemon) SystemVersion() types.Version {
 		Experimental: utils.ExperimentalBuild(),
 	}
 
-	if kernelVersion, err := kernel.GetKernelVersion(); err == nil {
-		v.KernelVersion = kernelVersion.String()
+	kernelVersion := "<unknown>"
+	if kv, err := kernel.GetKernelVersion(); err != nil {
+		logrus.Warnf("Could not get kernel version: %v", err)
+	} else {
+		kernelVersion = kv.String()
 	}
+	v.KernelVersion = kernelVersion
 
 	return v
 }