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Date:   Sat, 23 Sep 2023 19:25:47 +0300
From:   Mike Rapoport <rppt@kernel.org>
To:     Song Liu <song@kernel.org>
Cc:     linux-kernel@vger.kernel.org,
        Andrew Morton <akpm@linux-foundation.org>,
        =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= <bjorn@kernel.org>,
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        "David S. Miller" <davem@davemloft.net>,
        Dinh Nguyen <dinguyen@kernel.org>,
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        Helge Deller <deller@gmx.de>,
        Huacai Chen <chenhuacai@kernel.org>,
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Subject: Re: [PATCH v3 09/13] powerpc: extend execmem_params for kprobes
 allocations
Message-ID: <20230923162547.GN3303@kernel.org>
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On Thu, Sep 21, 2023 at 03:30:46PM -0700, Song Liu wrote:
> On Mon, Sep 18, 2023 at 12:31 AM Mike Rapoport <rppt@kernel.org> wrote:
> >
> [...]
> > @@ -135,5 +138,13 @@ struct execmem_params __init *execmem_arch_params(void)
> >
> >         range->pgprot = prot;
> >
> > +       execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_START;
> > +       execmem_params.ranges[EXECMEM_KPROBES].start = VMALLOC_END;
> 
> .end = VMALLOC_END.

Thanks, this should have been

	execmem_params.ranges[EXECMEM_KPROBES].start = range->start;
	execmem_params.ranges[EXECMEM_KPROBES].end = range->end;

where range points to the same range as EXECMEM_MODULE_TEXT.

 
> Thanks,
> Song
> 
> > +
> > +       if (strict_module_rwx_enabled())
> > +               execmem_params.ranges[EXECMEM_KPROBES].pgprot = PAGE_KERNEL_ROX;
> > +       else
> > +               execmem_params.ranges[EXECMEM_KPROBES].pgprot = PAGE_KERNEL_EXEC;
> > +
> >         return &execmem_params;
> >  }
> > --
> > 2.39.2
> >
> >

-- 
Sincerely yours,
Mike.