netdev - Re: [PATCH v2 bpf-next] bpf: test_bpf: add init_net to dev for flow

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: <f83d10c4-b5fd-0223-e1b6-d376751c3da2@gmail.com>
Date:   Thu, 27 Sep 2018 09:39:04 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Song Liu <songliubraving@...com>, netdev@...r.kernel.org
Cc:     daniel@...earbox.net, kernel-team@...com,
        Willem de Bruijn <willemb@...gle.com>,
        Petar Penkov <ppenkov@...gle.com>
Subject: Re: [PATCH v2 bpf-next] bpf: test_bpf: add init_net to dev for
 flow_dissector



On 09/27/2018 09:34 AM, Song Liu wrote:
> Latest changes in __skb_flow_dissect() assume skb->dev has valid nd_net.
> However, this is not true for test_bpf. As a result, test_bpf.ko crashes
> the system with the following stack trace:
> 
> This patch fixes tes_bpf by using init_net in the dummy dev.
> 
> Fixes: d58e468b1112 ("flow_dissector: implements flow dissector BPF hook")
> Reported-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Willem de Bruijn <willemb@...gle.com>
> Cc: Petar Penkov <ppenkov@...gle.com>
> Signed-off-by: Song Liu <songliubraving@...com>
> ---

Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Thanks.