arm.yml

# Copyright 2020 syzkaller project authors. All rights reserved.
# Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.

shell:
 - make vexpress_defconfig
 - make kvm_guest.config

config:
 - CMDLINE: [append, "root=/dev/vda console=ttyAMA0 vmalloc=512M"]
 - CMDLINE_EXTEND

 # If we enable KASAN, we may want the following configs as well.
 # KASAN_INLINE leads to a too large kernel image which is mishandled by qemu or kernel and does not boot:
 # https://lore.kernel.org/linux-arm-kernel/20210119130010.GA2338@C02TD0UTHF1T.local/T/#m78fdfcc41ae831f91c93ad5dabe63f7ccfb482f0
 # - KASAN_OUTLINE
 # - CC_OPTIMIZE_FOR_SIZE

 # ARM_LPAE=y/n are two major and very different MMUs used on ARM32 systems.
 # Currently we only test ARM_LPAE=y, but if we have another instance, it would be useful to use ARM_LPAE=n.
 - ARM_LPAE

 # The other one (UNWINDER_ARM) leads to unparsable oopses (no indication of stack start).
 - UNWINDER_FRAME_POINTER
 # Print PCs in stack traces otherwise we fail to parse oopses.
 - BACKTRACE_VERBOSE

 # Presumably this gives more interesting coverage.
 - HIGHMEM
 - HIGHPTE
 - DEBUG_HIGHMEM
 - BOUNCE
 - BIG_LITTLE
 - BL_SWITCHER
 - ARM_BIG_LITTLE_CPUIDLE
 - VFP
 - NEON
 - KERNEL_MODE_NEON
 - VMSPLIT_2G
 - WQ_POWER_EFFICIENT_DEFAULT
 - ENERGY_MODEL: [-baseline, -onlyusb]
 - PARAVIRT_TIME_ACCOUNTING
 - ARM_VEXPRESS_SPC_CPUFREQ: [-baseline, -onlyusb]
 - BINFMT_ELF_FDPIC
 - BINFMT_FLAT
 - BINFMT_FLAT_OLD
 - BINFMT_ZFLAT
 - BINFMT_SHARED_FLAT: [-v6.1]
 - CAN_KVASER_PCIEFD: [-baseline, -onlyusb]
 - CRC_T10DIF
 # Otherwise fuzzing on arm32 is currently hindered due to the "BUG: using smp_processor_id() in preemptible code" bug.
 # See https://github.com/google/syzkaller/issues/3249
 - HARDEN_BRANCH_PREDICTOR: n