linux-kernel - Re: [PATCH v4] scsi: ufs: core: Don't perform UFS clkscale if host asyn scan in progress

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <yq1ldqhijig.fsf@ca-mkp.ca.oracle.com>
Date: Tue, 27 May 2025 21:58:25 -0400
From: "Martin K. Petersen" <martin.petersen@...cle.com>
To: Ziqi Chen <quic_ziqichen@...cinc.com>
Cc: quic_cang@...cinc.com, bvanassche@....org, mani@...nel.org,
        beanhuo@...ron.com, avri.altman@....com, junwoo80.lee@...sung.com,
        martin.petersen@...cle.com, quic_nguyenb@...cinc.com,
        quic_nitirawa@...cinc.com, quic_rampraka@...cinc.com,
        neil.armstrong@...aro.org, luca.weiss@...rphone.com,
        konrad.dybcio@....qualcomm.com, peter.wang@...iatek.com,
        linux-arm-msm@...r.kernel.org, linux-scsi@...r.kernel.org,
        Alim Akhtar
 <alim.akhtar@...sung.com>,
        "James E.J. Bottomley"
 <James.Bottomley@...senPartnership.com>,
        Manivannan Sadhasivam
 <manivannan.sadhasivam@...aro.org>,
        linux-kernel@...r.kernel.org (open
 list)
Subject: Re: [PATCH v4] scsi: ufs: core: Don't perform UFS clkscale if host
 asyn scan in progress


Ziqi,

> When preparing for UFS clock scaling, the UFS driver will quiesce all
> sdevs queues in the UFS SCSI host tagset list and then unquiesce them
> when UFS clock scaling unpreparing. If the UFS SCSI host async scan is
> in progress at this time, some LUs may be added to the tagset list
> between UFS clkscale prepare and unprepare. This can cause two issues:

Applied to 6.16/scsi-staging, thanks!

-- 
Martin K. Petersen