reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git/commit/?id=b0b640fa028879fb570ed70c6f08ba979e958ade
        git remote add jpoimboe https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git
        git fetch --no-tags jpoimboe objtool-werror
        git checkout b0b640fa028879fb570ed70c6f08ba979e958ade
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 O=build_dir ARCH=i386 olddefconfig
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash arch/x86/events/intel/ arch/x86/hyperv/ arch/x86/kernel/ arch/x86/kvm/ arch/x86/lib/ arch/x86/mm/pat/ crypto/ drivers/accessibility/speakup/ drivers/ata/ drivers/atm/ drivers/auxdisplay/ drivers/block/ drivers/char/agp/ drivers/char/tpm/ drivers/clk/qcom/ drivers/crypto/allwinner/sun8i-ce/ drivers/crypto/allwinner/sun8i-ss/ drivers/crypto/aspeed/ drivers/crypto/caam/ drivers/crypto/ccp/ drivers/crypto/ccree/ drivers/crypto/hisilicon/sec/ drivers/crypto/inside-secure/ drivers/dma/ drivers/firewire/ drivers/firmware/ drivers/fpga/ drivers/gpu/drm/ drivers/gpu/host1x/ drivers/hv/ drivers/hwspinlock/ drivers/hwtracing/intel_th/ drivers/i2c/busses/ drivers/infiniband/hw/cxgb4/ drivers/infiniband/hw/irdma/ drivers/infiniband/hw/mlx4/ drivers/infiniband/hw/mlx5/ drivers/infiniband/hw/mthca/ drivers/infiniband/hw/ocrdma/ drivers/infiniband/hw/vmw_pvrdma/ drivers/input/keyboard/ drivers/input/misc/ drivers/input/touchscreen/ drivers/iommu/ drivers/mailbox/ drivers/media/dvb-core/ drivers/media/pci/intel/ipu6/ drivers/media/platform/amphion/ drivers/media/platform/nvidia/tegra-vde/ drivers/media/platform/qcom/camss/ drivers/media/platform/qcom/iris/ drivers/media/platform/qcom/venus/ drivers/media/platform/rockchip/rkisp1/ drivers/media/platform/samsung/exynos4-is/ drivers/media/platform/samsung/s5p-mfc/ drivers/media/platform/ti/omap3isp/ drivers/media/radio/si470x/ drivers/media/rc/ drivers/message/fusion/ drivers/mmc/host/ drivers/mtd/nand/raw/brcmnand/ drivers/net/ drivers/ntb/ drivers/nvdimm/ drivers/nvme/host/ drivers/parport/ drivers/pci/controller/ drivers/pinctrl/ drivers/rapidio/devices/ drivers/rpmsg/ drivers/scsi/ drivers/slimbus/ drivers/soc/fsl/qe/ drivers/soc/qcom/ drivers/spi/ drivers/staging/vc04_services/ drivers/tty/ drivers/usb/atm/ drivers/usb/cdns3/ drivers/usb/chipidea/ drivers/usb/core/ drivers/usb/dwc3/ drivers/usb/early/ drivers/usb/fotg210/ drivers/usb/gadget/udc/ drivers/usb/host/ drivers/usb/isp1760/ drivers/usb/misc/ drivers/usb/mon/ drivers/usb/mtu3/ drivers/vfio/pci/mlx5/ drivers/video/fbdev/ drivers/virt/vboxguest/ drivers/virtio/ drivers/w1/masters/ drivers/watchdog/ drivers/xen/ fs/ocfs2/ kernel/debug/ lib/ net/dsa/ net/ipv6/ net/mac80211/ net/sunrpc/ net/tipc/ security/tomoyo/ sound/isa/gus/ sound/isa/wss/ sound/pci/asihpi/ sound/pci/echoaudio/ sound/pci/hda/ sound/soc/codecs/ sound/usb/ sound/xen/