netdev - Re: Re: [PATCH v2] Bluetooth: 6LoWPAN: Add missing check for skb

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Message-Id: <20230320025444.18428-1-jiasheng@iscas.ac.cn>
Date:   Mon, 20 Mar 2023 10:54:44 +0800
From:   Jiasheng Jiang <jiasheng@...as.ac.cn>
To:     simon.horman@...igine.com
Cc:     marcel@...tmann.org, johan.hedberg@...il.com, luiz.dentz@...il.com,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, linux-bluetooth@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jiasheng Jiang <jiasheng@...as.ac.cn>
Subject: Re: Re: [PATCH v2] Bluetooth: 6LoWPAN: Add missing check for skb_clone

On Sat, Mar 18, 2023 at 05:03:21AM +0800, Simon Horman wrote:
> On Wed, Mar 15, 2023 at 03:06:21PM +0800, Jiasheng Jiang wrote:
>> Add the check for the return value of skb_clone since it may return NULL
>> pointer and cause NULL pointer dereference in send_pkt.
>> 
>> Fixes: 18722c247023 ("Bluetooth: Enable 6LoWPAN support for BT LE devices")
>> Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
>> ---
>> Changelog:
>> 
>> v1 -> v2:
>> 
>> 1. Modify the error handling in the loop.
> 
> I think that at a minimum this needs to be included in the patch description.
> Or better, in it's own patch with it's own fixes tag.
> It seems like a fundamental change to the error handling to me.

I will submit a separate patch to modify the error handling in the loop.
You can directly review the v1.
Link:https://lore.kernel.org/all/20230313090346.48778-1-jiasheng@iscas.ac.cn/

Thanks,
Jiang