linux-kernel - Re: [PATCH v2 0/9] block: Consolidate scsi sense buffer usage

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Date:   Thu, 2 Aug 2018 14:56:49 -0700
From:   Kees Cook <keescook@...omium.org>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Christoph Hellwig <hch@...radead.org>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "James E.J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        Tejun Heo <tj@...nel.org>, Borislav Petkov <bp@...en8.de>,
        "David S. Miller" <davem@...emloft.net>,
        "Manoj N. Kumar" <manoj@...ux.vnet.ibm.com>,
        "Matthew R. Ochs" <mrochs@...ux.vnet.ibm.com>,
        Uma Krishnan <ukrishn@...ux.vnet.ibm.com>,
        "Nicholas A. Bellinger" <nab@...ux-iscsi.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Cyrille Pitchen <cyrille.pitchen@...e-electrons.com>,
        Juergen Gross <jgross@...e.com>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Sagar Dharia <sdharia@...eaurora.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        Vinod Koul <vinod.koul@...el.com>,
        David Kershner <david.kershner@...sys.com>,
        linux-block <linux-block@...r.kernel.org>,
        linux-ide@...r.kernel.org, linux-scsi@...r.kernel.org,
        target-devel <target-devel@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/9] block: Consolidate scsi sense buffer usage

On Thu, Aug 2, 2018 at 2:24 PM, Jens Axboe <axboe@...nel.dk> wrote:
> On 7/31/18 1:51 PM, Kees Cook wrote:
>> This is a follow-up to commit f7068114d45e ("sr: pass down correctly
>> sized SCSI sense buffer") which further cleans up and removes needless
>> sense character array buffers and "struct request_sense" usage in favor
>> of the common "struct scsi_sense_hdr".
>>
>> First, drop a bunch of unused sense buffers:
>>  [PATCH 1/9] ide-cd: Drop unused sense buffers
>>  [PATCH 2/9] scsi: cxlflash: Drop unused sense buffers
>>
>> Next, allow the sense buffer to be usable outside SCSI tree:
>>  [PATCH 3/9] scsi: build scsi_common.o for all scsi passthrough request users
>>  [PATCH 4/9] target: don't depend on SCSI
>>
>> Then move all request_sense usage to scsi_sense_hdr:
>>  [PATCH 5/9] block: Switch struct packet_command to use struct scsi_sense_hdr
>>
>> And do some further cleanups for scsi_sense_hdr now that we can:
>>  [PATCH 6/9] ide-cd: Remove redundant sense buffer
>>  [PATCH 7/9] cdrom: Use struct scsi_sense_hdr internally
>>
>> Finally add a build-time check to make sure we don't pass bad buffer sizes:
>>  [PATCH 8/9] libata-scsi: Move sense buffers onto stack
>>  [PATCH 9/9] scsi: Check sense buffer size at build time
>
> Thanks Kees, applied for 4.19. Note that I hand applied patch #5 and #9,
> since they did not apply directly to the block tree.

Thanks; I appreciate that. I think I was based on v4.18-rc2 or something.

-Kees

-- 
Kees Cook
Pixel Security