linux-kernel - Re: [PATCH v2] mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING

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: <20211001154949.98956c092734590e781ce672@linux-foundation.org>
Date:   Fri, 1 Oct 2021 15:49:49 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        Eric Dumazet <edumazet@...gle.com>,
        syzbot <syzkaller@...glegroups.com>,
        "Huang, Ying" <ying.huang@...el.com>, Mel Gorman <mgorman@...e.de>
Subject: Re: [PATCH v2] mm/mempolicy: do not allow illegal
 MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()

On Fri,  1 Oct 2021 14:56:30 -0700 Eric Dumazet <eric.dumazet@...il.com> wrote:

> From: Eric Dumazet <edumazet@...gle.com>
> 
> syzbot reported access to unitialized memory in mbind() [1]

I'm lazy.  What memory is being accessed-unintialized?

> Issue came with commit bda420b98505 ("numa balancing: migrate on
> fault among multiple bound nodes")

No cc:stable?  What's the worst-case user-visible impact here?