Re: [PATCH v8 33/38] kselftest/arm64: Add a GCS test program built with the system libc

Mark Brown
2024-02-22T19:11:13Z

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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.

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