ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 1511 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   d5ad8ec3cfb56a017de6a784835666475b4be349
commit: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 drm: Add GUD USB Display driver
date:   5 months ago
config: nios2-randconfig-r035-20210804 (attached as .config)
compiler: nios2-linux-gcc (GCC) 10.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40e1a70b4aedf2859a1829991b48ef0ebe650bf2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=nios2 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE
   Depends on TTY && HAS_IOMEM
   Selected by
   - EARLY_PRINTK

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

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 26579 bytes --]

ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[kernel test robot]

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   aad611a868d16cdc16a7d4a764cef955293e47e3
commit: 606b102876e3741851dfb09d53f3ee57f650a52c drm: fb_helper: fix CONFIG_FB dependency
date:   5 months ago
config: nios2-randconfig-r014-20220313 (https://download.01.org/0day-ci/archive/20220313/202203131256.9dyj6eO2-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=606b102876e3741851dfb09d53f3ee57f650a52c
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 606b102876e3741851dfb09d53f3ee57f650a52c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE
   Depends on TTY && HAS_IOMEM
   Selected by
   - EARLY_PRINTK

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

ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[kernel test robot]

Hi Randy,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   455e73a07f6e288b0061dfcf4fcf54fa9fe06458
commit: 5ba3747dbc9ade2d22a8f5bff3c928cb41d35030 regulator: bd71815: add select to fix build
date:   8 months ago
config: nios2-randconfig-m031-20220113 (https://download.01.org/0day-ci/archive/20220113/202201131441.gBtxgYek-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5ba3747dbc9ade2d22a8f5bff3c928cb41d35030
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 5ba3747dbc9ade2d22a8f5bff3c928cb41d35030
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

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

ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   daadb3bd0e8d3e317e36bc2c1542e86c528665e5
commit: 40e1a70b4aedf2859a1829991b48ef0ebe650bf2 drm: Add GUD USB Display driver
date:   10 months ago
config: nios2-randconfig-r031-20220112 (https://download.01.org/0day-ci/archive/20220113/202201130256.3TGIbq70-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=40e1a70b4aedf2859a1829991b48ef0ebe650bf2
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 40e1a70b4aedf2859a1829991b48ef0ebe650bf2
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for SERIAL_CORE_CONSOLE
   Depends on TTY && HAS_IOMEM
   Selected by
   - EARLY_PRINTK

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

Re: ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[Max Filippov]

Hi Arnd,

On Mon, Dec 6, 2021 at 3:02 AM Arnd Bergmann <arnd@arndb.de> wrote:
>
> On Mon, Dec 6, 2021 at 11:30 AM kernel test robot <lkp@intel.com> wrote:
> > First bad commit (maybe != root cause):
> > commit: 570a82b9c36f76a5959b5e47900629b0d413931d media: i2c: select V4L2_ASYNC where needed
>
> Right, that is clearly unrelated.
>
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@intel.com>
> >
> > All errors (new ones prefixed by >>, old ones prefixed by <<):
> >
> > >> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!
>
> lz4 was recently updated, and apparently now does a 32-bit division. I
> assume this
> is the decompressor, as arch/mips had similar problems.
>
> The possible fixes are:
>
> - disable lz4 compressed kernels on xtensa
> - change lz4 to not perform any division
> - change the xtensa decompressor to include the divsi3 helper code from the
>   main kernel, see fbf3bce45821 ("MIPS: boot/compressed/: add __ashldi3 to
>   target for ZSTD compression")

I couldn't reproduce this on xtensa with 5.16-rc6 and I don't think there
is such issue with xtensa because it has config-specific assembly
implementation of __divsi3 that doesn't use __divsi3_table.

Also the report is against nios2.

-- 
Thanks.
-- Max

Re: ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[Arnd Bergmann]

On Mon, Dec 6, 2021 at 11:30 AM kernel test robot <lkp@intel.com> wrote:
> First bad commit (maybe != root cause):
> commit: 570a82b9c36f76a5959b5e47900629b0d413931d media: i2c: select V4L2_ASYNC where needed

Right, that is clearly unrelated.

> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>, old ones prefixed by <<):
>
> >> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

lz4 was recently updated, and apparently now does a 32-bit division. I
assume this
is the decompressor, as arch/mips had similar problems.

The possible fixes are:

- disable lz4 compressed kernels on xtensa
- change lz4 to not perform any division
- change the xtensa decompressor to include the divsi3 helper code from the
  main kernel, see fbf3bce45821 ("MIPS: boot/compressed/: add __ashldi3 to
  target for ZSTD compression")

        Arnd

ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

[kernel test robot]

Hi Arnd,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1
commit: 570a82b9c36f76a5959b5e47900629b0d413931d media: i2c: select V4L2_ASYNC where needed
date:   7 weeks ago
config: nios2-randconfig-r021-20211206 (https://download.01.org/0day-ci/archive/20211206/202112061844.RuSQXzxk-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=570a82b9c36f76a5959b5e47900629b0d413931d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 570a82b9c36f76a5959b5e47900629b0d413931d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined!

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