Hi Chengguang, FYI, the error/warning still remains. tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS head: 464c0bf980f96a307759f809825ab0a3b59f8b70 commit: f9c4e7b09f7d51f9256fe51b9c40657cd7302530 [1753/1753] block: release bip in a right way in error path config: x86_64-buildonly-randconfig-006-20250806 (https://download.01.org/0day-ci/archive/20250807/202508070154.VYnxHXi4-lkp@i...) 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/20250807/202508070154.VYnxHXi4-lkp@i...) 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/202508070154.VYnxHXi4-lkp@intel.com/ All warnings (new ones prefixed by >>):

...

block/bio-integrity.c:41:6: warning: no previous prototype for function '__bio_integrity_free' [-Wmissing-prototypes] 41 | void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) | ^ block/bio-integrity.c:41:1: note: declare 'static' if the function is not intended to be used outside of this translation unit 41 | void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) | ^ | static 1 warning generated.

vim +/__bio_integrity_free +41 block/bio-integrity.c 40

41 void __bio_integrity_free(struct bio_set *bs, struct bio_integrity_payload *bip) 42 { 43 if (bs && mempool_initialized(&bs->bio_integrity_pool)) { 44 if (bip->bip_vec) 45 bvec_free(&bs->bvec_integrity_pool, bip->bip_vec, 46 bip->bip_slab); 47 mempool_free(bip, &bs->bio_integrity_pool); 48 } else { 49 kfree(bip); 50 } 51 } 52

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