From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH][net-next] net: check extack._msg before print
Date: Sun, 05 Aug 2018 17:25:02 -0700 (PDT)
Message-ID: <20180805.172502.532856794435416999.davem@davemloft.net>
References: <1533282321-17808-1-git-send-email-lirongqing@baidu.com>
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To: lirongqing@baidu.com
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From: Li RongQing <lirongqing@baidu.com>
Date: Fri,  3 Aug 2018 15:45:21 +0800

> dev_set_mtu_ext is able to fail with a valid mtu value, at that
> condition, extack._msg is not set and random since it is in stack,
> then kernel will crash when print it.
> 
> Fixes: 7a4c53bee3324a ("net: report invalid mtu value via netlink extack")
> Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
> Signed-off-by: Li RongQing <lirongqing@baidu.com>

Applied, thank you.