Re: [PATCH bpf-next 1/2] bpf: Add interval and tnum analysis for signed and unsigned BPF_DIV

[kernel test robot <lkp@intel.com>]

Hi Yazhou,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Yazhou-Tang/selftests-bpf-Add-tests-for-BPF_DIV-analysis/20251221-174300
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/tencent_7C98FAECA40C98489ACF4515CE346F031509%40qq.com
patch subject: [PATCH bpf-next 1/2] bpf: Add interval and tnum analysis for signed and unsigned BPF_DIV
config: i386-randconfig-051-20251222 (https://download.01.org/0day-ci/archive/20251224/202512240306.FBKF27IL-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512240306.FBKF27IL-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/202512240306.FBKF27IL-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __divdi3
   >>> referenced by tnum.c:300 (kernel/bpf/tnum.c:300)
   >>>               kernel/bpf/tnum.o:(tnum_sdiv) in archive vmlinux.a
   >>> referenced by verifier.c:15227 (kernel/bpf/verifier.c:15227)
   >>>               kernel/bpf/verifier.o:(scalar_min_max_sdiv) in archive vmlinux.a
   >>> referenced by verifier.c:15227 (kernel/bpf/verifier.c:15227)
   >>>               kernel/bpf/verifier.o:(scalar_min_max_sdiv) in archive vmlinux.a
   >>> referenced 6 more times

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