netdev - Re: [PATCH net] gro_cell: add napi_disable in gro_cells

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Date:   Wed, 19 Dec 2018 15:51:00 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     lorenzo.bianconi@...hat.com
Cc:     netdev@...r.kernel.org, edumazet@...gle.com
Subject: Re: [PATCH net] gro_cell: add napi_disable in gro_cells_destroy

From: Lorenzo Bianconi <lorenzo.bianconi@...hat.com>
Date: Wed, 19 Dec 2018 23:23:00 +0100

> Add napi_disable routine in gro_cells_destroy since starting from
> commit c42858eaf492 ("gro_cells: remove spinlock protecting receive
> queues") gro_cell_poll and gro_cells_destroy can run concurrently on
> napi_skbs list producing a kernel Oops if the tunnel interface is
> removed while gro_cell_poll is running. The following Oops has been
> triggered removing a vxlan device while the interface is receiving
> traffic
 ...
> Fixes: c42858eaf492 ("gro_cells: remove spinlock protecting receive queues")
> Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@...hat.com>

Applied and queued up for -stable, thanks.