[jpoimboe:objtool/merge 66/70] error: objtool: --checksum not supported; install xxhash-devel and recompile

[jpoimboe:objtool/merge 66/70] error: objtool: --checksum not supported; install xxhash-devel and recompile

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jpoimboe/linux.git objtool/merge
head:   f8a72ab791073ba755c7ea51cdbec6ad963351b8
commit: d118c28e401965b8db84cb00e3cb08bf6a1888d6 [66/70] livepatch/klp-build: Introduce klp-build script for generating livepatch modules
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20251013/202510131412.DEdNtoeO-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251013/202510131412.DEdNtoeO-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510131412.DEdNtoeO-lkp@intel.com/

All errors (new ones prefixed by >>):

>> error: objtool: --checksum not supported; install xxhash-devel and recompile
--
   drivers/input/mouse/sermouse.c: In function 'sermouse_connect':
   drivers/input/mouse/sermouse.c:240:61: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     240 |         snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);
         |                                                             ^~~~~~~
   drivers/input/mouse/sermouse.c:240:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     240 |         snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> error: objtool: --checksum not supported; install xxhash-devel and recompile
--
   drivers/input/mouse/vsxxxaa.c: In function 'vsxxxaa_connect':
   drivers/input/mouse/vsxxxaa.c:468:55: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     468 |         snprintf(mouse->phys, sizeof(mouse->phys), "%s/input0", serio->phys);
         |                                                       ^~~~~~~
   drivers/input/mouse/vsxxxaa.c:468:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     468 |         snprintf(mouse->phys, sizeof(mouse->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> error: objtool: --checksum not supported; install xxhash-devel and recompile
--
   sermouse.c: In function 'sermouse_connect':
   sermouse.c:240:61: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     240 |         snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);
         |                                                             ^~~~~~~
   sermouse.c:240:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     240 |         snprintf(sermouse->phys, sizeof(sermouse->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> error: objtool: --checksum not supported; install xxhash-devel and recompile
--
   vsxxxaa.c: In function 'vsxxxaa_connect':
   vsxxxaa.c:468:55: warning: '/input0' directive output may be truncated writing 7 bytes into a region of size between 1 and 32 [-Wformat-truncation=]
     468 |         snprintf(mouse->phys, sizeof(mouse->phys), "%s/input0", serio->phys);
         |                                                       ^~~~~~~
   vsxxxaa.c:468:9: note: 'snprintf' output between 8 and 39 bytes into a destination of size 32
     468 |         snprintf(mouse->phys, sizeof(mouse->phys), "%s/input0", serio->phys);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> error: objtool: --checksum not supported; install xxhash-devel and recompile

-- 
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https://github.com/intel/lkp-tests/wiki