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From: shuah <shuah@kernel.org>
To: Kees Cook <keescook@chromium.org>, Ingo Molnar <mingo@kernel.org>
Cc: Hector Marco-Gisbert <hecmargi@upv.es>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Jason Gunthorpe <jgg@mellanox.com>, Jann Horn <jannh@google.com>,
	Russell King <linux@armlinux.org.uk>,
	x86@kernel.org, kernel-hardening@lists.openwall.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
	shuah <shuah@kernel.org>
Subject: Re: [PATCH v3 7/7] selftests/exec: Add READ_IMPLIES_EXEC tests
Date: Tue, 11 Feb 2020 11:11:21 -0700
Message-ID: <4f8a5036-dc2a-90ad-5fc8-69560a5dd78e@kernel.org> (raw)
In-Reply-To: <20200210193049.64362-8-keescook@chromium.org>

On 2/10/20 12:30 PM, Kees Cook wrote:
> In order to check the matrix of possible states for handling
> READ_IMPLIES_EXEC across native, compat, and the state of PT_GNU_STACK,
> add tests for these execution conditions.
> 
> Signed-off-by: Kees Cook <keescook@chromium.org>

No issues for this to go through tip.

A few problems to fix first. This fails to compile when 32-bit libraries
aren't installed. It should fail the 32-bit part and run other checks.

make kselftest TARGETS=exec
make --no-builtin-rules ARCH=x86 -C ../../.. headers_install
make[2]: Entering directory '/lkml/linux_5.6'
   INSTALL ./usr/include
make[2]: Leaving directory '/lkml/linux_5.6'
make[2]: Entering directory '/lkml/linux_5.6/tools/testing/selftests/exec'
gcc -m32 -Wall -Wno-nonnull -D_GNU_SOURCE -Wl,-z,noexecstack -o 
/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack.new 
read_implies_exec.c
readelf -Wl 
/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack.new 
| grep GNU_STACK | grep -q 'RW ' && \
mv 
/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack.new 
/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/include/stdint.h:9,
                  from read_implies_exec.c:6:
/usr/include/stdint.h:26:10: fatal error: bits/libc-header-start.h: No 
such file or directory
    26 | #include <bits/libc-header-start.h>
       |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
readelf: Error: 
'/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack.new': 
No such file
make[2]: *** [Makefile:58: 
/lkml/linux_5.6/tools/testing/selftests/exec/rie-compat-nx-gnu-stack] 
Error 1
make[2]: Leaving directory '/lkml/linux_5.6/tools/testing/selftests/exec'
make[1]: *** [Makefile:150: all] Error 2
make: *** [Makefile:1217: kselftest] Error 2

thanks,
-- Shuah

  reply index

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-10 19:30 [PATCH v3 0/7] binfmt_elf: Update READ_IMPLIES_EXEC logic for modern CPUs Kees Cook
2020-02-10 19:30 ` [PATCH v3 1/7] x86/elf: Add table to document READ_IMPLIES_EXEC Kees Cook
2020-02-10 19:30 ` [PATCH v3 2/7] x86/elf: Split READ_IMPLIES_EXEC from executable GNU_STACK Kees Cook
2020-02-10 19:30 ` [PATCH v3 3/7] x86/elf: Disable automatic READ_IMPLIES_EXEC for 64-bit address spaces Kees Cook
2020-02-10 19:30 ` [PATCH v3 4/7] arm32/64, elf: Add tables to document READ_IMPLIES_EXEC Kees Cook
2020-02-12  9:27   ` Catalin Marinas
2020-02-10 19:30 ` [PATCH v3 5/7] arm32/64, elf: Split READ_IMPLIES_EXEC from executable GNU_STACK Kees Cook
2020-02-12  9:27   ` Catalin Marinas
2020-02-10 19:30 ` [PATCH v3 6/7] arm64, elf: Disable automatic READ_IMPLIES_EXEC for 64-bit address spaces Kees Cook
2020-02-12  9:28   ` Catalin Marinas
2020-02-10 19:30 ` [PATCH v3 7/7] selftests/exec: Add READ_IMPLIES_EXEC tests Kees Cook
2020-02-11 18:11   ` shuah [this message]
2020-02-11 19:25     ` Kees Cook
2020-02-11 21:06       ` shuah
2020-02-11 23:54         ` Kees Cook
2020-02-12  0:02           ` shuah
2020-02-11 17:17 ` [PATCH v3 0/7] binfmt_elf: Update READ_IMPLIES_EXEC logic for modern CPUs Jason Gunthorpe

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