netdev - Re: [RFC PATCH 0/1] net: arcnet: Fix RESET sequence

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Message-ID: <20210111100907.tacvfj6ghtwkpyy6@linutronix.de>
Date:   Mon, 11 Jan 2021 11:09:07 +0100
From:   "Sebastian A. Siewior" <bigeasy@...utronix.de>
To:     "Ahmed S. Darwish" <a.darwish@...utronix.de>
Cc:     Michael Grzeschik <m.grzeschik@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [RFC PATCH 0/1] net: arcnet: Fix RESET sequence

On 2020-12-22 10:03:37 [+0100], Ahmed S. Darwish wrote:
>   2) arcnet_close() contains a del_timer_sync(). If the irq handler
>      interrupts the to-be-deleted timer then call del_timer_sync(), it
>      will just loop forever.

del_timer_sync() will trigger a warning if invoked from interrupt
handler.

Sebastian