So I came across this nicely written tutorial on how to get started on LLDB: Testing LLDB using QEMU — The LLDB Debugger (llvm.org)
I have been able to follow all of the instructions provided in the above link, and I was able to test QEMU working without MTE option. Therefore, I was wondering if anyone was able to get the above tutorial working by enabling the MTE feature. I have created a custom kernel image with the MTE feature enabled
~/llvm-project-13/lldb/scripts/lldb-test-qemu/linux.build/arm64 » grep -Hnri MTE .config .config:486:CONFIG_ARM64_AS_HAS_MTE=y .config:487:CONFIG_ARM64_MTE=y
For instance, if I were to run the command shown in tutorial:
sudo bash run-qemu.sh --arch arm64 --rootfs ./buster-arm64-rootfs.img --kernel ./linux.build/arm64/arch/arm64/boot/Image --qemu ./qemu.git/build/qemu-system-aarch64 --mte
I get an output that states:
qemu-system-aarch64: MTE requested, but not supported by the guest CPU
I have tried searching through websites to see whether I can find a solution, but haven’t been able to find anything. Has anyone got this tutorial to work with MTE? I was hoping to follow the steps provided Debugging Memory Tagging with LLDB 13 upon getting the LLDB to work.