netdev - Re: [PATCH V1 net 1/3] net: ena: Prevent reset after device destruction

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Date:   Wed, 12 Aug 2020 10:52:19 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Shay Agroskin <shayagr@...zon.com>
Cc:     <davem@...emloft.net>, <netdev@...r.kernel.org>, <dwmw@...zon.com>,
        <zorik@...zon.com>, <matua@...zon.com>, <saeedb@...zon.com>,
        <msw@...zon.com>, <aliguori@...zon.com>, <nafea@...zon.com>,
        <gtzalik@...zon.com>, <netanel@...zon.com>, <alisaidi@...zon.com>,
        <benh@...zon.com>, <akiyano@...zon.com>, <sameehj@...zon.com>,
        <ndagan@...zon.com>
Subject: Re: [PATCH V1 net 1/3] net: ena: Prevent reset after device
 destruction

On Wed, 12 Aug 2020 13:10:57 +0300 Shay Agroskin wrote:
> This patch also removes the destruction of the timer and reset services
> from ena_remove() since the timer is destroyed by the destruction
> routine and the reset work is handled by this patch.

You'd still have a use after free if the work runs after the device is
removed. I think cancel_work_sync() gotta stay.