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Re: [WARNING] x86/mm: Found insecure W+X mapping at address ..

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On Tue, 23 May 2017, Kees Cook wrote:
> On Tue, May 23, 2017 at 8:40 AM, Thomas Gleixner <tglx@linutronix.de> wrote:
> > As of 4.12-rc1 one of my machines triggers the insecure W+X mapping.
>
> > It's consistenly 9 entries close to the beginning of the module space,
> > before the first actual module starts. See below.
> >
> > Any ideas which avoid bisecting would be appreciated.
> 
> Is this the same as:
> 
> https://lkml.org/lkml/2017/5/19/899
> 
> ?
> 
> The location is very similar.

CONFIG_KPROBES_SANITY_TEST=n does not make it go away, but I suspect it's
something in that area, as I recently switched on all of these self tests.

I'll dig into it later today. Need to walk the dogs first.

Thanks,

	tglx

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Thread

[WARNING] x86/mm: Found insecure W+X mapping at address .. Thomas Gleixner <tglx@linutronix.de> - 2017-05-23 17:50 +0200
  Re: [WARNING] x86/mm: Found insecure W+X mapping at address .. Kees Cook <keescook@chromium.org> - 2017-05-23 18:00 +0200
    Re: [WARNING] x86/mm: Found insecure W+X mapping at address .. Thomas Gleixner <tglx@linutronix.de> - 2017-05-23 18:40 +0200
      Re: [WARNING] x86/mm: Found insecure W+X mapping at address .. Thomas Gleixner <tglx@linutronix.de> - 2017-05-23 22:50 +0200
        Re: [WARNING] x86/mm: Found insecure W+X mapping at address .. Steven Rostedt <rostedt@goodmis.org> - 2017-05-24 01:00 +0200
          Re: [WARNING] x86/mm: Found insecure W+X mapping at address .. Thomas Gleixner <tglx@linutronix.de> - 2017-05-24 08:30 +0200

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