linux-kernel - Re: [PATCH] isa: Prevent NULL dereference in isa

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Message-ID: <20171108181223.GB14871@kroah.com>
Date:   Wed, 8 Nov 2017 19:12:23 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     William Breathitt Gray <vilhelm.gray@...il.com>,
        Wu Fengguang <fengguang.wu@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] isa: Prevent NULL dereference in isa_bus driver callbacks

On Wed, Nov 08, 2017 at 09:11:22AM -0800, Linus Torvalds wrote:
> On Wed, Nov 8, 2017 at 7:23 AM, William Breathitt Gray
> <vilhelm.gray@...il.com> wrote:
> >
> > This patch fixes a possible NULL pointer dereference if one of the
> > isa_driver callbacks to attempted for an unsupported device. This error
> > should not occur in practice since ISA devices are typically manually
> > configured and loaded by the users, but we may as well prevent this
> > error from popping up for the 0day testers.
> 
> Thanks. Acked-by: Linus Torvalds <torvalds@...ux-foundation.org>
> 
> And it doesn't seem critical enough for me to take directly this late
> in the 4.14 game, so I guess I'll get it from the usual channels.

I'll queue it up, given that this has been a problem for 10+ years :)

thanks,

greg k-h