linux-kernel - Re: [PATCH] usbnet: ipheth: fix potential recvmsg bug and recvmsg bug 2

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Message-ID: <df9bc91da52405f4cf1e75e2530151317068c46f.camel@corsac.net>
Date:   Fri, 23 Nov 2018 14:07:18 +0100
From:   Yves-Alexis Perez <corsac@...sac.net>
To:     Bernd Eckstein <3erndeckstein@...il.com>, davem@...emloft.net
Cc:     linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, 3ernd.Eckstein@...il.com,
        Oliver Zweigle <Oliver.Zweigle@...o.com>
Subject: Re: [PATCH] usbnet: ipheth: fix potential recvmsg bug and recvmsg
 bug 2

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On Fri, 2018-11-23 at 13:51 +0100, Bernd Eckstein wrote:
> This causes the following problems:
> - double free of the skb or potential memory leak
> - in dmesg: 'recvmsg bug' and 'recvmsg bug 2' and eventually
>   general protection fault

For what it's worth, Bernd contacted me because it looks like this was the
cause of https://lore.kernel.org/lkml/20180605085450.GA3506@scapa.corsac.net/

I wanted to try Bernd patch, unfortunately I wasn't able to reproduce the
freezes on more recent kernels, so right now I can't add a Tested-By, but I'd
be happy to be kept on CC.

Regards,
- -- 
Yves-Alexis
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