linux-kernel - Re: [PATCH 4.9] brcmfmac: use correct skb freeing helper when deleting flowring

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Date:   Tue, 27 Sep 2016 14:27:42 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Arend Van Spriel <arend.vanspriel@...adcom.com>
Cc:     Rafał Miłecki <zajec5@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Pieter-Paul Giesberts <pieter-paul.giesberts@...adcom.com>,
        Franky Lin <frankyl@...adcom.com>,
        linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: Re: [PATCH 4.9] brcmfmac: use correct skb freeing helper when deleting flowring

Arend Van Spriel <arend.vanspriel@...adcom.com> writes:

> On 27-9-2016 11:14, Rafał Miłecki wrote:
>> From: Rafał Miłecki <rafal@...ecki.pl>
>> 
>> Flowrings contain skbs waiting for transmission that were passed to us
>> by netif. It means we checked every one of them looking for 802.1x
>> Ethernet type. When deleting flowring we have to use freeing function
>> that will check for 802.1x type as well.
>> 
>> Freeing skbs without a proper check was leading to counter not being
>> properly decreased. This was triggering a WARNING every time
>> brcmf_netdev_wait_pend8021x was called.
>
> Acked-by: Arend van Spriel <arend@...adcom.com>
>> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
>> ---
>> Kalle: this isn't important enough for 4.8 as it's too late for that.
>> 
>> I'd like to get it for 4.9 however, as this fixes bug that could lead
>> to WARNING on every add_key/del_key call. We was struggling with these
>> WARNINGs for some time and this fixes one of two problems causing them.

Ok, I'll queue this for 4.9.

> Please mark it for stable as well.

I can add that. Any ideas how old releases stable releases should this
go to?

-- 
Kalle Valo