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Date:   Fri, 25 Dec 2020 14:15:10 +0800
From:   Jason Wang <>
To:     wangyunjian <>
Cc:     "" <>,
        "" <>,
        "" <>,
        "Lilijun (Jerry)" <>,
        chenchanghu <>,
        xudingke <>,
        "huangbin (J)" <>
Subject: Re: [PATCH net v4 2/2] vhost_net: fix tx queue stuck when sendmsg

On 2020/12/24 下午5:09, wangyunjian wrote:
>> -EAGAIN and -ENOBFS are fine. But I don't see how -ENOMEM can be returned.
> The tun_build_skb() and tun_napi_alloc_frags() return -ENOMEM when memory
> allocation fails.
> Thanks

You're right. So I think we need check them all.

In the future, we need think of a better way. I feel such check is kind 
of fragile since people may modify core sock codes without having a look 
at what vhost does.


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