linux-kernel - Re: [PATCH] Bluetooth: hci_qca: Fix double free during SSR timeout

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Message-ID: <51c4dfe5daf8497bd99a013458d93b92@codeaurora.org>
Date:   Tue, 09 Jun 2020 21:20:43 +0530
From:   gubbaven@...eaurora.org
To:     Markus Elfring <Markus.Elfring@....de>
Cc:     linux-arm-msm@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        Balakrishna Godavarthi <bgodavar@...eaurora.org>,
        hemantg@...eaurora.org, Johan Hedberg <johan.hedberg@...il.com>,
        Marcel Holtmann <marcel@...tmann.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Rocky Liao <rjliao@...eaurora.org>,
        Rob Herring <robh@...nel.org>,
        Sean Paul <seanpaul@...omium.org>,
        Claire Chang <tientzu@...omium.org>, yshavit@...gle.com,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] Bluetooth: hci_qca: Fix double free during SSR timeout

Hi Markus,

Sure we will update in next patch set.

Regards,
Lakshmi Narayna.
On 2020-06-04 23:54, Markus Elfring wrote:
>> Due to race conditions between qca_hw_error and qca_controller_memdump
>> during SSR timeout,the same pointer is freed twice.
> 
> This is an unfortunate software situation.
> 
> 
>> Which results to double free error.
> 
> How do you think about to omit this sentence from the change 
> description?
> 
> 
>> Now a lock is acquired while SSR state moved to timeout.
> 
> I suggest to convert this information into an imperative wording.
> 
> Would you like to add the tag “Fixes” to the commit message?
> 
> Regards,
> Markus