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charset=us-ascii Content-Disposition: inline Hi Alexander, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git kho/v5 head: d5a7d2cfaba824b4c5af065e4a88b5d5676ce370 commit: 4381c43cfcbab7c3822ade60ab9547007ea1bbcf [11/14] arm64: Add KHO support config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20250312/202503121551.InIOkfiZ-lkp@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250312/202503121551.InIOkfiZ-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202503121551.InIOkfiZ-lkp@intel.com/ All warnings (new ones prefixed by >>): >> kernel/kexec_handover.c:386:9: warning: variable 'err' is uninitialized when used here [-Wuninitialized] 386 | return err; | ^~~ kernel/kexec_handover.c:370:9: note: initialize the variable 'err' to silence this warning 370 | int err; | ^ | = 0 1 warning generated. -- >> kernel/kexec_handover.c:798: warning: Function parameter or struct member 'size' not described in 'kho_preserve_phys' vim +/err +386 kernel/kexec_handover.c 6d6f81c097d286f Alexander Graf 2024-01-17 365 fab9bce0dd59678 Alexander Graf 2024-01-17 366 /* Handling for debugfs/kho/in */ fab9bce0dd59678 Alexander Graf 2024-01-17 367 static __init int kho_in_debugfs_init(const void *fdt) fab9bce0dd59678 Alexander Graf 2024-01-17 368 { fab9bce0dd59678 Alexander Graf 2024-01-17 369 struct dentry *file; fab9bce0dd59678 Alexander Graf 2024-01-17 370 int err; fab9bce0dd59678 Alexander Graf 2024-01-17 371 fab9bce0dd59678 Alexander Graf 2024-01-17 372 kho_in.dir = debugfs_create_dir("in", debugfs_root); fab9bce0dd59678 Alexander Graf 2024-01-17 373 if (!kho_in.dir) fab9bce0dd59678 Alexander Graf 2024-01-17 374 return -ENOMEM; fab9bce0dd59678 Alexander Graf 2024-01-17 375 fab9bce0dd59678 Alexander Graf 2024-01-17 376 kho_in.fdt.size = fdt_totalsize(fdt); fab9bce0dd59678 Alexander Graf 2024-01-17 377 kho_in.fdt.data = (void *)fdt; fab9bce0dd59678 Alexander Graf 2024-01-17 378 file = debugfs_create_blob("fdt", 0400, kho_in.dir, &kho_in.fdt); fab9bce0dd59678 Alexander Graf 2024-01-17 379 if (!file) fab9bce0dd59678 Alexander Graf 2024-01-17 380 goto err_rmdir; fab9bce0dd59678 Alexander Graf 2024-01-17 381 fab9bce0dd59678 Alexander Graf 2024-01-17 382 return 0; fab9bce0dd59678 Alexander Graf 2024-01-17 383 fab9bce0dd59678 Alexander Graf 2024-01-17 384 err_rmdir: fab9bce0dd59678 Alexander Graf 2024-01-17 385 debugfs_remove(kho_in.dir); fab9bce0dd59678 Alexander Graf 2024-01-17 @386 return err; fab9bce0dd59678 Alexander Graf 2024-01-17 387 } fab9bce0dd59678 Alexander Graf 2024-01-17 388 :::::: The code at line 386 was first introduced by commit :::::: fab9bce0dd59678d69807e8ee4864ce8af2f2d42 kexec: Add KHO parsing support :::::: TO: Alexander Graf :::::: CC: Mike Rapoport (Microsoft) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki