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Subject: Re: kernel BUG at net/core/skbuff.c:LINE! (2)
From: Eric Dumazet <eric.dumazet@gmail.com>
To: Xin Long <lucien.xin@gmail.com>, Cong Wang <xiyou.wangcong@gmail.com>
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Date: Sat, 09 Dec 2017 21:12:21 -0800
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On Sun, 2017-12-10 at 12:38 +0800, Xin Long wrote:
> On Sun, Dec 10, 2017 at 3:36 AM, Cong Wang <xiyou.wangcong@gmail.com>
> wrote:
> > On Fri, Dec 8, 2017 at 12:45 AM, Xin Long <lucien.xin@gmail.com>
> > wrote:
> > > This isn't a sctp problem, but mld's, seems when lo's mtu became
> > > 0,
> > > it allocs a skb without enough space in add_grec():
> > 
> > Shouldn't we just set its min_mtu to ETH_MIN_MTU?
> 
> No idea why there's no min_mtu limitation for lo dev.

Because it wont solve this bug.

ETH_MIN_MTU is really about IPv4.