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Dan Carpenter wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new > head: 3a0afa6640282ff559b6f4ff432cffc3ecc2bc77 > commit: 825d533acfd9573bd1b99f08a80c42fa41fbf07d [398/411] mm/huge_memory: implement device-private THP splitting > config: i386-randconfig-141-20250910 (https://download.01.org/0day-ci/archive/20250910/202509101756.jkC29gja-lkp@intel.com/config) > compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) > > 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 > | Reported-by: Dan Carpenter > | Closes: https://lore.kernel.org/r/202509101756.jkC29gja-lkp@intel.com/ > > smatch warnings: > mm/huge_memory.c:3069 __split_huge_pmd_locked() error: uninitialized symbol 'write'. > mm/huge_memory.c:3078 __split_huge_pmd_locked() error: uninitialized symbol 'young'. > > vim +/write +3069 mm/huge_memory.c > If the entry is not present, it is a migration or device private entry, so write is set, I understand that smatch is complaining about it falling through the paths. If freeze is true for a device private migration entry, young needs to be initialized to false. Andrew I can send out a patch to fix it or I can wait to gather more feedback and do a v6? Balbir