linux-kernel - Re: [PATCH] scsi: core: Add BLIST_NO_ASK_VPD

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

Message-ID: <26ee5886-e846-78ad-7b45-1e352aa5ef08@acm.org>
Date:   Mon, 3 Oct 2022 09:32:16 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Lee Duncan <leeman.duncan@...il.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Lee Duncan <lduncan@...e.com>, Martin Wilck <mwilck@...e.com>,
        Hannes Reinecke <hare@...e.de>
Subject: Re: [PATCH] scsi: core: Add BLIST_NO_ASK_VPD_SIZE for some VDASD

On 9/28/22 11:13, Lee Duncan wrote:
> Some storage, such as AIX VDASD (virtual storage) and IBM 2076
> (front end) do not like the recent commit:
> 
> commit c92a6b5d6335 ("scsi: core: Query VPD size before getting full page")
> 
> That commit changed getting SCSI VPD pages so that we now read
> just enough of the page to get the actual page size, then read
> the whole page in a second read. The problem is that the above
> mentioned hardware returns zero for the page size, because of
> a firmware error. In such cases, until the firmware is fixed,
> this new black flag says to revert to the original method of
> reading the VPD pages, i.e. try to read as a whole buffer's
> worth on the first try.

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