linux-kernel - Re: [PATCH v3 0/4] SCSI: Fix issues between removing device and error handle

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: <fdcc6a76-f724-422f-904a-eb980c4b458a@gmail.com>
Date:   Tue, 14 Nov 2023 00:00:31 +0800
From:   Wenchao Hao <haowenchao22@...il.com>
To:     Wenchao Hao <haowenchao2@...wei.com>,
        "James E . J . Bottomley" <jejb@...ux.ibm.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, louhongxiang@...wei.com
Subject: Re: [PATCH v3 0/4] SCSI: Fix issues between removing device and error
 handle

On 10/16/23 10:03 AM, Wenchao Hao wrote:
> I am testing SCSI error handle with my previous scsi_debug error
> injection patches, and found some issues when removing device and
> error handler happened together.
> 
> These issues are triggered because devices in removing would be skipped
> when calling shost_for_each_device().
> 

Friendly ping...

> Three issues are found:
> 1. statistic info printed at beginning of scsi_error_handler is wrong
> 2. device reset is not triggered
> 3. IO requeued to request_queue would be hang after error handle
> 
> V3:
>   - Update patch description
>   - Update comments of functions added
> 
> V2:
>   - Fix IO hang by run all devices' queue after error handler
>   - Do not modify shost_for_each_device() directly but add a new
>     helper to iterate devices but do not skip devices in removing
> 
> Wenchao Hao (4):
>   scsi: core: Add new helper to iterate all devices of host
>   scsi: scsi_error: Fix wrong statistic when print error info
>   scsi: scsi_error: Fix device reset is not triggered
>   scsi: scsi_core: Fix IO hang when device removing
> 
>  drivers/scsi/scsi.c        | 46 ++++++++++++++++++++++++++------------
>  drivers/scsi/scsi_error.c  |  4 ++--
>  drivers/scsi/scsi_lib.c    |  2 +-
>  include/scsi/scsi_device.h | 25 ++++++++++++++++++---
>  4 files changed, 57 insertions(+), 20 deletions(-)
>