From: "H. Peter Anvin" <hpa@zytor.com>
To: pageexec@freemail.hu, linux-kernel@vger.kernel.org,
Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
Michael Ellerman <mpe@ellerman.id.au>,
Mathias Krause <minipli@googlemail.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, Arnd Bergmann <arnd@arndb.de>,
Emese Revfy <re.emese@gmail.com>,
kernel-hardening@lists.openwall.com,
linux-arch <linux-arch@vger.kernel.org>
Subject: [kernel-hardening] Re: [PATCH v2 2/4] introduce post-init read-only memory
Date: Mon, 30 Nov 2015 14:24:59 -0800 [thread overview]
Message-ID: <565CCCBB.1070500@zytor.com> (raw)
In-Reply-To: <56564F0F.3158.108D0B78@pageexec.freemail.hu>
On 11/25/15 16:15, PaX Team wrote:
> On 25 Nov 2015 at 15:31, Kees Cook wrote:
>
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2c173c..772c784ba763 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -256,6 +256,7 @@
>> .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
>> VMLINUX_SYMBOL(__start_rodata) = .; \
>> *(.rodata) *(.rodata.*) \
>> + *(.data..ro_after_init) /* Read only after init */ \
> ^^^^^^^^^^^
> looks like it's tabs vs. spaces...
>
One more thing... double dots I think has special meanings to gcc, so it
might be better to avoid.
-hpa
WARNING: multiple messages have this Message-ID (diff)
From: "H. Peter Anvin" <hpa@zytor.com>
To: pageexec@freemail.hu, linux-kernel@vger.kernel.org,
Kees Cook <keescook@chromium.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
Michael Ellerman <mpe@ellerman.id.au>,
Mathias Krause <minipli@googlemail.com>,
Ingo Molnar <mingo@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
x86@kernel.org, Arnd Bergmann <arnd@arndb.de>,
Emese Revfy <re.emese@gmail.com>,
kernel-hardening@lists.openwall.com,
linux-arch <linux-arch@vger.kernel.org>
Subject: Re: [PATCH v2 2/4] introduce post-init read-only memory
Date: Mon, 30 Nov 2015 14:24:59 -0800 [thread overview]
Message-ID: <565CCCBB.1070500@zytor.com> (raw)
In-Reply-To: <56564F0F.3158.108D0B78@pageexec.freemail.hu>
On 11/25/15 16:15, PaX Team wrote:
> On 25 Nov 2015 at 15:31, Kees Cook wrote:
>
>> diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
>> index c4bd0e2c173c..772c784ba763 100644
>> --- a/include/asm-generic/vmlinux.lds.h
>> +++ b/include/asm-generic/vmlinux.lds.h
>> @@ -256,6 +256,7 @@
>> .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
>> VMLINUX_SYMBOL(__start_rodata) = .; \
>> *(.rodata) *(.rodata.*) \
>> + *(.data..ro_after_init) /* Read only after init */ \
> ^^^^^^^^^^^
> looks like it's tabs vs. spaces...
>
One more thing... double dots I think has special meanings to gcc, so it
might be better to avoid.
-hpa
next prev parent reply other threads:[~2015-11-30 22:24 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-25 23:31 [kernel-hardening] [PATCH v2 0/4] introduce post-init read-only memory Kees Cook
2015-11-25 23:31 ` Kees Cook
2015-11-25 23:31 ` [kernel-hardening] [PATCH v2 1/4] init: create cmdline param to disable readonly Kees Cook
2015-11-25 23:31 ` Kees Cook
2015-11-26 0:37 ` [kernel-hardening] " PaX Team
2015-11-26 0:37 ` PaX Team
2015-11-26 0:37 ` PaX Team
2015-11-26 0:37 ` PaX Team
2015-11-26 0:44 ` [kernel-hardening] " Greg KH
2015-11-26 0:44 ` Greg KH
2015-11-26 7:51 ` [kernel-hardening] " Ingo Molnar
2015-11-26 7:51 ` Ingo Molnar
2015-11-30 21:52 ` [kernel-hardening] " Kees Cook
2015-11-30 21:52 ` Kees Cook
2015-11-30 22:24 ` [kernel-hardening] " Russell King - ARM Linux
2015-11-30 22:24 ` Russell King - ARM Linux
2015-11-30 22:34 ` [kernel-hardening] " Kees Cook
2015-11-30 22:34 ` Kees Cook
2015-12-01 7:24 ` [kernel-hardening] " Ingo Molnar
2015-12-01 7:24 ` Ingo Molnar
2015-12-01 7:19 ` [kernel-hardening] " Heiko Carstens
2015-12-01 7:19 ` Heiko Carstens
2015-11-25 23:31 ` [kernel-hardening] [PATCH v2 2/4] introduce post-init read-only memory Kees Cook
2015-11-25 23:31 ` Kees Cook
2015-11-26 0:15 ` [kernel-hardening] " PaX Team
2015-11-26 0:15 ` PaX Team
2015-11-26 0:15 ` PaX Team
2015-11-26 0:15 ` PaX Team
2015-11-30 22:24 ` H. Peter Anvin [this message]
2015-11-30 22:24 ` H. Peter Anvin
2015-12-09 19:35 ` [kernel-hardening] " Kees Cook
2015-12-09 19:35 ` Kees Cook
2015-11-25 23:31 ` [kernel-hardening] [PATCH v2 3/4] lkdtm: verify that __ro_after_init works correctly Kees Cook
2015-11-25 23:31 ` Kees Cook
2015-11-25 23:31 ` [kernel-hardening] [PATCH v2 4/4] x86, vdso: mark vDSO read-only after init Kees Cook
2015-11-25 23:31 ` Kees Cook
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