linux-kernel - Re: Double free of struct sk_buff reported by SLAB_CONSISTENCY_CHECKS with init_on

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Message-ID: <719eebd3-259d-8beb-025a-f2d17c632711@gmail.com>
Date:   Mon, 4 Nov 2019 09:33:18 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Thibaut Sautereau <thibaut.sautereau@...p-os.org>,
        netdev@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Laura Abbott <labbott@...hat.com>,
        Kees Cook <keescook@...omium.org>,
        Alexander Potapenko <glider@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>, clipos@....gouv.fr
Subject: Re: Double free of struct sk_buff reported by SLAB_CONSISTENCY_CHECKS
 with init_on_free



On 11/4/19 9:03 AM, Thibaut Sautereau wrote:
> 
> We first encountered this issue under huge network traffic (system image
> download), and I was able to reproduce by simply sending a big packet
> with `ping -s 65507 <ip>`, which crashes the kernel every single time.
> 

Since you have a repro, could you start a bisection ?

Thanks !