linux-kernel - Re: [PATCH v2] scsi: ufs: core: fix devfreq deadlocks

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Message-ID: <638f5b7f-e0af-1021-24a6-d8bdc4101af7@acm.org>
Date:   Wed, 18 Jan 2023 13:14:50 -0800
From:   Bart Van Assche <bvanassche@....org>
To:     Johan Hovold <johan+linaro@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Can Guo <quic_cang@...cinc.com>,
        Andrew Halaney <ahalaney@...hat.com>
Subject: Re: [PATCH v2] scsi: ufs: core: fix devfreq deadlocks

On 1/16/23 08:12, Johan Hovold wrote:
> There is a lock inversion and rwsem read-lock recursion in the devfreq
> target callback which can lead to deadlocks.

Reviewed-by: Bart Van Assche <bvanassche@....org>