linux-kernel - Re: [PATCH 7/7] sysvipc_find_ipc should increase position index

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: <ad24ee52-21a8-3ff0-e968-63d315472b91@virtuozzo.com>
Date:   Wed, 6 May 2020 08:03:52 +0300
From:   Vasily Averin <vvs@...tuozzo.com>
To:     Andreas Schwab <schwab@...e.de>
Cc:     linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        NeilBrown <neilb@...e.com>, Waiman Long <longman@...hat.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>
Subject: Re: [PATCH 7/7] sysvipc_find_ipc should increase position index

On 5/5/20 7:13 PM, Andreas Schwab wrote:
> I think this is causing this bug (seen on 5.6.8):

thank you for reporting,
yes, you are right, it's my fault
patch incorrectly updated *new_pos in case of found entry

> # ipcs -q
> 
> ------ Message Queues --------
> key        msqid      owner      perms      used-bytes   messages    
> 0x7c982867 3          root       644        0            0           
> 0x7c982867 3          root       644        0            0           
> 0x7c982867 3          root       644        0            0           
> 0x7c982867 3          root       644        0            0           

Thank you,
	Vasily Averin