netdev - Re: [PATCH net] tun: prevent negative ifindex

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: <20231016135729.492ae9e2@hermes.local>
Date: Mon, 16 Oct 2023 13:57:29 -0700
From: Stephen Hemminger <stephen@...workplumber.org>
To: Eric Dumazet <edumazet@...gle.com>
Cc: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org,
 eric.dumazet@...il.com, syzbot <syzkaller@...glegroups.com>
Subject: Re: [PATCH net] tun: prevent negative ifindex

On Mon, 16 Oct 2023 21:42:10 +0200
Eric Dumazet <edumazet@...gle.com> wrote:

> Setting tfile->ifindex to zero should be a NOP ?
> 
> This means dev_index_reserve() will allocate a ifindex for us.
> 
> Not sure we want to prevent something that was working properly in the past.

That makes sense. did not read ahead to see what happens