netdev - Re: [mdiobus_free] BUG: KASAN: slab-out-of-bounds in _copy_from

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Date:   Wed, 8 Nov 2017 11:02:44 +0800
From:   Fengguang Wu <fengguang.wu@...el.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Roger Quadros <rogerq@...com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Uwe Kleine-König <uwe@...ine-koenig.org>,
        Jon Mason <jon.mason@...adcom.com>,
        Fabio Estevam <fabio.estevam@....com>,
        Network Development <netdev@...r.kernel.org>,
        Andrey Ryabinin <aryabinin@...tuozzo.com>
Subject: Re: [mdiobus_free] BUG: KASAN: slab-out-of-bounds in
 _copy_from_user+0x5d/0x8f

On Tue, Nov 07, 2017 at 08:04:25AM -0800, Linus Torvalds wrote:
>On Tue, Nov 7, 2017 at 4:15 AM, Fengguang Wu <fengguang.wu@...el.com> wrote:
>> Sorry please ignore this report -- according to Andrey, old gcc may
>> well generate false KASAN reports.
>
>Oh wow, this gcc is even older than the other one that caused slob problems..
>
>>> Linux version 4.14.0-rc8 (kbuild@...el11) (gcc version 4.6.4 (Debian 4.6.4-7))
>
>Yeah, please do upgrade your compilers to something from this decade.

Sure. I'll drop gcc 4.4, 4.6, 4.8 testing.

Fengguang