Hi Akshay, Thanks for your reply. I add KBUILD_CFLAGS += -w flag in Makefile and the compilation is done. However, during the link process, I got some undefined reference errors. I also tried gcc, the building process works fine. But after I flash the new kernel into Pixel2. The touch screen does not respond. Do you have any experience building a Pixel 2 kernel with kasan&kcov enabled? Thanks!
CC [M] drivers/staging/qcacld-3.0/core/utils/pktlog/linux_ac.o CC [M] drivers/staging/qcacld-3.0/core/utils/host_diag_log/src/host_diag_log.o LD [M] drivers/staging/qcacld-3.0/wlan.o LD drivers/staging/built-in.o LD drivers/built-in.o LINK vmlinux LD vmlinux.o MODPOST vmlinux.o GEN .version CHK include/generated/compile.h drivers/built-in.o: In function `gpiod_set_array_value_priv': aosp-kernel/private/msm-google/drivers/gpio/gpiolib.c:1441: undefined reference to `__asan_alloca_poison' aosp-kernel/private/msm-google/drivers/gpio/gpiolib.c:1441:(.text+0x1b708): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `__asan_alloca_poison' aosp-kernel/private/msm-google/drivers/gpio/gpiolib.c:1442: undefined reference to `__asan_alloca_poison' aosp-kernel/private/msm-google/drivers/gpio/gpiolib.c:1442:(.text+0x1b760): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `__asan_alloca_poison' aosp-kernel/private/msm-google/drivers/gpio/gpiolib.c:1478: undefined reference to `__asan_allocas_unpoison' Best, Jimmy On Tuesday, December 24, 2019 at 12:31:23 AM UTC+8, Akshay Mhaske wrote: > > This warnings comes if the size of a function frame is larger than length > byte. > It is recommended to choose 2048 as default warning threshold for 64bit > architecture. > Can you please try to increase FRAME_WARN size to 2048 or larger. > CONFIG_FRAME_WARN=2048 > > Thanks, > Akshay > > > On Mon, Dec 16, 2019 at 8:37 PM Jimmy <[email protected] <javascript:>> > wrote: > >> Hi, all >> >> I am trying to build an Android kernel (branch >> android-msm-wahoo-4.4-pie-qpr2) with kasan&kcov enabled using android-llvm >> toolchain. I modified build.config to: >> >> ARCH=arm64 >> BRANCH=android-msm-wahoo-4.4 >> CC=clang >> CLANG_TRIPLE=aarch64-linux-gnu- >> CROSS_COMPILE=aarch64-linux-android- >> CROSS_COMPILE_ARM32=arm-linux-androideabi- >> DEFCONFIG=wahoo_defconfig >> EXTRA_CMDS='' >> KERNEL_DIR=private/msm-google >> POST_DEFCONFIG_CMDS="check_defconfig && update_kasan_config" >> >> function update_kasan_config() { >> ${KERNEL_DIR}/scripts/config --file ${OUT_DIR}/.config \ >> -e CONFIG_KASAN \ >> -e CONFIG_KASAN_INLINE \ >> -e CONFIG_TEST_KASAN \ >> -e CONFIG_KCOV \ >> -e CONFIG_SLUB \ >> -e CONFIG_SLUB_DEBUG \ >> -e CONFIG_SLUB_DEBUG_ON \ >> -d CONFIG_SLUB_DEBUG_PANIC_ON \ >> -d CONFIG_KASAN_OUTLINE \ >> -d CONFIG_KERNEL_LZ4 \ >> -d CONFIG_RANDOMIZE_BASE >> (cd ${OUT_DIR} && \ >> make O=${OUT_DIR} $archsubarch CROSS_COMPILE=${CROSS_COMPILE} >> olddefconfig) >> } >> >> CLANG_PREBUILT_BIN=prebuilts-master/clang/host/linux-x86/clang-4691093/bin/ >> >> LINUX_GCC_CROSS_COMPILE_PREBUILTS_BIN=prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin >> >> LINUX_GCC_CROSS_COMPILE_ARM32_PREBUILTS_BIN=prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9/bin >> LZ4_PREBUILTS_BIN=prebuilts-master/misc/linux-x86/lz4 >> DTC_PREBUILTS_BIN=prebuilts-master/misc/linux-x86/dtc >> LIBUFDT_PREBUILTS_BIN=prebuilts-master/misc/linux-x86/libufdt >> FILES=" >> arch/arm64/boot/dtbo.img >> arch/arm64/boot/Image.lz4-dtb >> vmlinux >> System.map >> " >> IN_KERNEL_MODULES=1 >> STOP_SHIP_TRACEPRINTK=1 >> UNSTRIPPED_MODULES=" >> wlan.ko >> " >> >> However, when I tried to build the kernel using build/build.sh, I got >> several errors as follows: >> >> aosp-kernel/private/msm-google/drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c:538:13: >> >> error: >> stack frame size of 2144 bytes in function >> 'audio_effects_compat_ioctl' >> [-Werror,-Wframe-larger-than=] >> >> >> aosp-kernel/private/msm-google/drivers/media/platform/msm/camera_v2/pproc/cpp/msm_cpp.c:4018:13: >> >> error: >> stack frame size of 3200 bytes in function >> 'msm_cpp_subdev_fops_compat_ioctl' >> [-Werror,-Wframe-larger-than=] >> >> I have done some searching, but could not find the answer. >> Could someone help me with this? Thanks in advance! >> >> Best, >> Jimmy >> >> -- >> -- >> You received this message because you are subscribed to the "Android >> Building" mailing list. >> To post to this group, send email to [email protected] >> <javascript:> >> To unsubscribe from this group, send email to >> [email protected] <javascript:> >> For more options, visit this group at >> http://groups.google.com/group/android-building?hl=en >> >> --- >> You received this message because you are subscribed to the Google Groups >> "Android Building" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/android-building/dcf4556c-69e9-485c-9d4c-a4e8119c3165%40googlegroups.com >> >> <https://groups.google.com/d/msgid/android-building/dcf4556c-69e9-485c-9d4c-a4e8119c3165%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- -- You received this message because you are subscribed to the "Android Building" mailing list. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-building?hl=en --- You received this message because you are subscribed to the Google Groups "Android Building" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/android-building/db7c9793-5bf5-4c73-8392-cfcebcefa1d1%40googlegroups.com.
