netdev - AW: AW: AW: PROBLEM: Kernel Oops in UDP stack

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Message-ID: <1ae1b19241734bfaacff082d241932f9@ZCOM03.mut-group.com>
Date:   Wed, 1 Aug 2018 13:27:22 +0000
From:   Marcel Hellwig <mhellwig@...-group.com>
To:     'Eric Dumazet' <eric.dumazet@...il.com>,
        Paolo Abeni <pabeni@...hat.com>,
        "'davem@...emloft.net'" <davem@...emloft.net>,
        "'kuznet@....inr.ac.ru'" <kuznet@....inr.ac.ru>,
        "'yoshfuji@...ux-ipv6.org'" <yoshfuji@...ux-ipv6.org>,
        "'andrew@...n.ch'" <andrew@...n.ch>
CC:     "'netdev@...r.kernel.org'" <netdev@...r.kernel.org>,
        "'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
        "Matthias Wystrik" <mwystrik@...-group.com>
Subject: AW: AW: AW: PROBLEM: Kernel Oops in UDP stack

>Another way to spot the problem would be to add a check in 
>pskb_expand_head()
>

Many thanks for this advice. Indeed, by backporting the pskb_expand_head (and build_skb because it didn't exist) from the version 3.5.7 to 3.4.113 fixes (?) the issue for now. We want to test 3 or 4 machines over night and see if any problem occurs. 

Let's see if we can do the same for our 2.6.39.2 kernel (I guess that will be pure pain 😃 ).

Many thanks so far for your support! I will report tomorrow (CEST) if we succeeded.

Mit freundlichen Grüßen / With kind regards

Marcel Hellwig
B. Sc. Informatik
Entwickler

m-u-t GmbH
Am Marienhof 2
22880 Wedel
Germany

Phone:	+49 4103 9308 - 474
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mhellwig@...-group.com

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