Received-SPF: pass (google.com: domain of linux-kernel+bounces-77228-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3;
Date: Thu, 22 Feb 2024 19:11:04 +0000
From: Mark Brown <broonie@kernel.org>
To: Thiago Jung Bauermann <thiago.bauermann@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
	Andrew Morton <akpm@linux-foundation.org>,
	Marc Zyngier <maz@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Arnd Bergmann <arnd@arndb.de>, Oleg Nesterov <oleg@redhat.com>,
	Eric Biederman <ebiederm@xmission.com>,
	Kees Cook <keescook@chromium.org>, Shuah Khan <shuah@kernel.org>,
	"Rick P. Edgecombe" <rick.p.edgecombe@intel.com>,
	Deepak Gupta <debug@rivosinc.com>, Ard Biesheuvel <ardb@kernel.org>,
	Szabolcs Nagy <Szabolcs.Nagy@arm.com>,
	"H.J. Lu" <hjl.tools@gmail.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Florian Weimer <fweimer@redhat.com>,
	Christian Brauner <brauner@kernel.org>,
	linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
	kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org,
	linux-arch@vger.kernel.org, linux-mm@kvack.org,
	linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-riscv@lists.infradead.org
Subject: Re: [PATCH v8 33/38] kselftest/arm64: Add a GCS test program built
 with the system libc
Message-ID: <9b899b4e-7410-4c3b-967b-7794dac742e4@sirena.org.uk>
References: <20240203-arm64-gcs-v8-0-c9fec77673ef@kernel.org>
 <20240203-arm64-gcs-v8-33-c9fec77673ef@kernel.org>
 <87sf1n7uea.fsf@linaro.org>
Precedence: bulk
MIME-Version: 1.0
Content-Type: multipart/signed; micalg=pgp-sha512;
	protocol="application/pgp-signature"; boundary="ZHq996jFPNViQlH3"
Content-Disposition: inline
In-Reply-To: <87sf1n7uea.fsf@linaro.org>


--ZHq996jFPNViQlH3
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

On Mon, Feb 19, 2024 at 11:15:57PM -0300, Thiago Jung Bauermann wrote:

> The only issue as can be seen above is that the can_call_function test
> is failing. The child is getting a GCS Segmentation fault when returning
> from fork().

> I tried debugging it with GDB, but I don't see what's wrong since the
> address in LR matches the first entry in GCSPR. Here is the
> debug session:

I believe based on prior discussions that you're running this using
shrinkwrap - can you confirm exactly how please, including things like
which firmware configuration you're using?  I'm using current git with

  shrinkwrap run \
        --rtvar KERNEL=arch/arm64/boot/Image \
        --rtvar ROOTFS=${ROOTFS} \
        --rtvar CMDLINE="${CMDLINE}" \
        --overlay=arch/v9.4.yaml ns-edk2.yaml

and a locally built yocto and everything seems perfectly happy.

--ZHq996jFPNViQlH3
Content-Type: application/pgp-signature; name="signature.asc"

-----BEGIN PGP SIGNATURE-----

iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmXXnEcACgkQJNaLcl1U
h9A9hgf+IJIWILnaAT0TG0s4fwHDFwBgAEwmbr/85IsiE58YLlQn3tHAkAETsExB
EtAk73IgOoaGfvFDcKF9Zq3PjE2iQ3r+Lh1A6/nyUdQBcMaZSES4ioXx5cwwjqFX
m6lWkAiAzHxqFN++5z9gfq4lT3HjZQ3TFVE8y4Ij6vmmOeTIINFEGovAi330xkEZ
prLXALb7+ONnUB3jG7VDY7Gx7HF+jt2Qd9gAz1KNNrBCEJT2fImUVEI1P/15iww7
Xxm2Udbwd52h580B1x1sa7tMEFRi34tvmKx+2HHSgGFQ/a10LFpE4VnsW1vHUzGn
2k8W5X8LkpXaHbgoXUGBMqDMFlKkWw==
=owiX
-----END PGP SIGNATURE-----

--ZHq996jFPNViQlH3--