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BCC: lkp@intel.com CC: oe-kbuild-all@lists.linux.dev TO: Kumar Kartikeya Dwivedi tree: https://github.com/kkdwivedi/linux cancellations head: c5378a88f114558f34a5251ecc2e401d1c111548 commit: ec83c9d519f8d4358632039cc2c6f8146f925e70 [31/48] bpf: Keep the descriptors of a site apart by chain of calls :::::: branch date: 5 hours ago :::::: commit date: 7 hours ago config: hexagon-randconfig-2200-20261109 (https://download.01.org/0day-ci/archive/20261109/202611091250.noF1mTAA-lkp@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) smatch: v0.5.0-9187-g5189e3fb 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/202611091250.noF1mTAA-lkp@intel.com/ smatch warnings: kernel/bpf/frame_desc.c:207 insn_subprog() error: buffer overflow 'env->subprog_info' 1026 <= 1073741823 vim +207 kernel/bpf/frame_desc.c 240b6bc21978f8 Kumar Kartikeya Dwivedi 2026-11-08 197 ec1e74abdd85c3 Kumar Kartikeya Dwivedi 2026-11-08 198 /* The subprog insn @idx belongs to. */ ec1e74abdd85c3 Kumar Kartikeya Dwivedi 2026-11-08 199 static int insn_subprog(struct bpf_verifier_env *env, u32 idx) ec1e74abdd85c3 Kumar Kartikeya Dwivedi 2026-11-08 200 { ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 201 int l = 0, r = env->subprog_cnt, m; ec1e74abdd85c3 Kumar Kartikeya Dwivedi 2026-11-08 202 ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 203 if (idx >= env->subprog_info[r].start) ec1e74abdd85c3 Kumar Kartikeya Dwivedi 2026-11-08 204 return -1; ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 205 while (r - l > 1) { ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 206 m = l + (r - l) / 2; ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 @207 if (env->subprog_info[m].start <= idx) ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 208 l = m; ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 209 else ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 210 r = m; ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 211 } ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 212 return l; ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 213 } ec83c9d519f8d4 Kumar Kartikeya Dwivedi 2026-11-08 214 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki