linux-kernel - Re: [PATCH net v2] rds: Fix incorrect statistics counting

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] [day] [month] [year] [list]

Date:   Thu, 07 Sep 2017 20:07:33 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     Haakon.Bugge@...cle.com
Cc:     santosh.shilimkar@...cle.com, netdev@...r.kernel.org,
        linux-rdma@...r.kernel.org, rds-devel@....oracle.com,
        linux-kernel@...r.kernel.org, knut.omang@...cle.com
Subject: Re: [PATCH net v2] rds: Fix incorrect statistics counting

From: Håkon Bugge <Haakon.Bugge@...cle.com>
Date: Wed,  6 Sep 2017 18:35:51 +0200

> In rds_send_xmit() there is logic to batch the sends. However, if
> another thread has acquired the lock and has incremented the send_gen,
> it is considered a race and we yield. The code incrementing the
> s_send_lock_queue_raced statistics counter did not count this event
> correctly.
> 
> This commit counts the race condition correctly.
> 
> Changes from v1:
> - Removed check for *someone_on_xmit()*
> - Fixed incorrect indentation
> 
> Signed-off-by: Håkon Bugge <haakon.bugge@...cle.com>
> Reviewed-by: Knut Omang <knut.omang@...cle.com>

Applied.