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Date:   Mon, 28 Sep 2020 17:36:13 -0700
From:   Xie He <>
To:     David Miller <>
Cc:     Jakub Kicinski <>,
        Linux Kernel Network Developers <>,
        LKML <>,
        Martin Schiller <>
Subject: Re: [PATCH net] drivers/net/wan/x25_asy: Keep the ldisc running even
 when netif is down

On Mon, Sep 28, 2020 at 3:58 PM David Miller <> wrote:
> It could also go back down and also back up again after you do this
> test.  Maybe even 10 or 100 times over.
> You can't just leave things so incredibly racy like this, please apply
> proper synchronization between netdev state changes and this TTY code.
> Thank you.

OK! Thanks!

I'll try to ensure proper locking for the netif_running checks and re-submit.

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