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Subject[next] arm64: efi-rt-wrapper.S:8: Error: unknown mnemonic `bti' -- `bti c'
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While building Linux next 20211215 arm64 defconfig with gcc-8
following warnings / errors noticed.
and gcc-9, gcc-10 and gcc-11 builds pass.

make --silent --keep-going --jobs=8
O=/home/tuxbuild/.cache/tuxmake/builds/current \
ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- \
CROSS_COMPILE_COMPAT=arm-linux-gnueabihf- \
'CC=sccache aarch64-linux-gnu-gcc' \
'HOSTCC=sccache gcc'

/builds/linux/arch/arm64/kernel/efi-rt-wrapper.S: Assembler messages:
/builds/linux/arch/arm64/kernel/efi-rt-wrapper.S:8: Error: unknown
mnemonic `bti' -- `bti c'
make[3]: *** [/builds/linux/scripts/
arch/arm64/kernel/efi-rt-wrapper.o] Error 1

meta data:
git describe: next-20211215
git_sha: 93bf6eee76c0e716f6b32de690b1c52991547bb4
git_short_log: 93bf6eee76c0 (\"Add linux-next specific files for 20211215\")
target_arch: arm64
toolchain: gcc-8

steps to reproduce:
# To install tuxmake on your system globally:
# sudo pip3 install -U tuxmake

tuxmake --runtime podman --target-arch arm64 --toolchain gcc-8
--kconfig defconfig

Reported-by: Linux Kernel Functional Testing <>

build log:

Linaro LKFT

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