Messages in this thread | | | From | Max Filippov <> | Date | Fri, 24 Dec 2021 04:09:27 -0800 | Subject | Re: ERROR: modpost: "__divsi3_table" [lib/lz4/lz4_compress.ko] undefined! |
| |
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
| |