linux-kernel - Re: [PATCH] wifi: ath11k: fix SAC bug on peer addition with sta band migration

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Date:   Wed, 22 Feb 2023 12:07:29 +0200
From:   Kalle Valo <kvalo@...nel.org>
To:     Christian Marangi <ansuelsmth@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, ath11k@...ts.infradead.org,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Dan Carpenter <error27@...il.com>
Subject: Re: [PATCH] wifi: ath11k: fix SAC bug on peer addition with sta band migration

Christian Marangi <ansuelsmth@...il.com> writes:

> On Mon, Feb 20, 2023 at 08:57:51AM +0000, Kalle Valo wrote:
>> Christian Marangi <ansuelsmth@...il.com> wrote:
>> 
>> > Fix sleep in atomic context warning detected by Smatch static checker
>> > analyzer.
>> > 
>> > Following the locking pattern for peer_rhash_add lock tbl_mtx_lock mutex
>> > always even if sta is not transitioning to another band.
>> > This is peer_add function and a more secure locking should not cause
>> > performance regression.
>> > 
>> > Fixes: d673cb6fe6c0 ("wifi: ath11k: fix peer addition/deletion
>> > error on sta band migration")
>> > Reported-by: Dan Carpenter <error27@...il.com>
>> > Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
>> > Signed-off-by: Kalle Valo <quic_kvalo@...cinc.com>
>> 
>> I assume you only compile tested this and I'll add that to the commit log. It's
>> always good to know how the patch was tested.
>> 
>
> Hi, I just got time to test this and works correctly on my Xiaomi
> AX3600.
>
> Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-01208-QCAHKSWPL_SILICONZ-1

Thanks, I'll add this to the commit log.

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