[android-common:android-mainline 1/2] arch/x86/events/intel/pt.o: warning: objtool: pt_topa_entry_for_page()+0x3b: unreachable instruction

Saturday, 10 July 2021

TO: cros-kernel-buildreports(a)googlegroups.com

tree:   https://android.googlesource.com/kernel/common android-mainline
head:   2ae639f21ac05f52887131ed8f4a750ccad500d0
commit: 7889eed9171e6988176a877d677d5f291185d186 [1/2] Merge 54a728dc5e4fe ("Merge
tag 'sched-core-2021-06-28' of
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip";) into android-mainline
config: x86_64-randconfig-a016-20210709 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
8d69635ed9ecf36fd0ca85906bfde17949671cbe)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android-mainline
        git checkout 7889eed9171e6988176a877d677d5f291185d186
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64
SHELL=/bin/bash arch/x86/ drivers/ kernel/ net/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

All warnings (new ones prefixed by >>):

...
> arch/x86/events/intel/pt.o: warning: objtool:
pt_topa_entry_for_page()+0x3b: unreachable instruction --
...
> drivers/pci/pci.o: warning: objtool: pci_ioremap_wc_bar()+0x14:
unreachable instruction --
...
> drivers/dma-buf/dma-buf.o: warning: objtool:
dma_buf_get_flags()+0x28: unreachable instruction --
...
> drivers/gpu/drm/drm_connector.o: warning: objtool:
drm_connector_attach_encoder()+0x20: unreachable instruction --
...
> drivers/media/dvb-core/dvb_math.o: warning: objtool:
intlog10()+0x65: unreachable instruction --
...
> drivers/phy/samsung/phy-exynos-mipi-video.o: warning: objtool:
exynos_mipi_video_phy_xlate()+0x19: unreachable instruction --
...
> net/wireless/util.o: warning: objtool:
ieee80211_mandatory_rates()+0x67: unreachable instruction --
...
> drivers/video/fbdev/core/cfbfillrect.o: warning: objtool:
cfb_fillrect()+0x33a: unreachable instruction --
...
> drivers/video/fbdev/core/sysfillrect.o: warning: objtool:
sys_fillrect()+0x309: unreachable instruction --
...
> kernel/printk/printk_ringbuffer.o: warning: objtool:
get_data()+0xd3: unreachable instruction --
...
> arch/x86/kernel/cpu/mce/amd.o: warning: objtool: get_name()+0xa0:
unreachable instruction ..

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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