linux-kernel - Re: [PATCH] can: can327: fix potential skb leak when netdev is down

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Date:   Tue, 22 Nov 2022 19:09:11 +0900
From:   Max Staudt <max@...as.org>
To:     <wg@...ndegger.com>, <mkl@...gutronix.de>
Cc:     "Ziyang Xuan (William)" <william.xuanziyang@...wei.com>,
        <davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
        <pabeni@...hat.com>, <linux-can@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Vincent Mailhol <mailhol.vincent@...adoo.fr>
Subject: Re: [PATCH] can: can327: fix potential skb leak when netdev is down

Marc, Wolfgang,

Could you please include William's patch to can327, provided that you
see no issue with it?


Thanks :)

Max




On Tue, 22 Nov 2022 10:10:50 +0800
"Ziyang Xuan (William)" <william.xuanziyang@...wei.com> wrote:

> Hello,
> 
> Gently ask.
> 
> Is there any other problem? And can it be applied?
> 
> Thanks.
> 
> > (CC Vincent, he may be interested)
> > 
> > 
> > On Thu, 10 Nov 2022 14:14:37 +0800
> > Ziyang Xuan <william.xuanziyang@...wei.com> wrote:
> >   
> >> Fix it by adding kfree_skb() in can327_feed_frame_to_netdev() when netdev
> >> is down. Not tested, just compiled.  
> > 
> > Looks correct to me, so:
> > 
> > Reviewed-by: Max Staudt <max@...as.org>
> > 
> > 
> > Thank you very much for finding and fixing this!
> > 
> > Max
> > 
> > .
> >