linux-kernel - Re: [REGRESSION] 28676d869bbb (scsi: sg: check for valid direction before starting the request) breaks mtx tape library control

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]

Date:   Tue, 18 Jul 2017 12:33:59 -0500
From:   Jason L Tibbitts III <tibbs@...h.uh.edu>
To:     Johannes Thumshirn <jthumshirn@...e.de>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        dvyukov@...gle.com, hare@...e.com, hch@....de,
        martin.petersen@...cle.com
Subject: Re: [REGRESSION] 28676d869bbb (scsi: sg: check for valid direction before starting the request) breaks mtx tape library control

I have verified that building a clean v4.12 with
68c59fcea1f2c6a54c62aa896cc623c1b5bc9b47 cherry picked on top still
shows the problem:

[root@...kup2 ~]# mtx -f /dev/sg7 next 0
Unloading drive 0 into Storage Element 45...mtx: Request Sense: Long
Report=yes
mtx: Request Sense: Valid Residual=no
mtx: Request Sense: Error Code=0 (Unknown?!)
mtx: Request Sense: Sense Key=No Sense
mtx: Request Sense: FileMark=no
mtx: Request Sense: EOM=no
mtx: Request Sense: ILI=no
mtx: Request Sense: Additional Sense Code = 00
mtx: Request Sense: Additional Sense Qualifier = 00
mtx: Request Sense: BPV=no
mtx: Request Sense: Error in CDB=no
mtx: Request Sense: SKSV=no
MOVE MEDIUM from Element Address 1 to 1045 Failed

Nothing appears to be logged; is there any kind of debugging information
I can collect which might help to track this down?  I'm not particularly
good at this but I am pretty sure that I'm building everything properly
and am actually booting the patched kernel.

 - J<