tree: https://android.googlesource.com/kernel/goldfish android-4.14 head: 4a1f984742c7b4ebfd2d77f48bf24b4ffcb069fd commit: 318babce66a62d8bc8d5434909a044b89ab3a53e [1/3] ANDROID: Initial commit of Incremental FS If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; cppcheck warnings: (new ones prefixed by >>) SHASH_DESC_ON_STACK(desc, alg->shash); ^ fs/incfs/integrity.c:198:6: note: Assuming that condition '!alg' is not redundant if (!alg || !alg->shash || !data.data || !digest.data) ^ fs/incfs/integrity.c:196:28: note: Null pointer dereference SHASH_DESC_ON_STACK(desc, alg->shash); ^ vim +196 fs/incfs/integrity.c 192 193 int incfs_calc_digest(struct incfs_hash_alg *alg, struct mem_range data, 194 struct mem_range digest) 195 { 197 198 if (!alg || !alg->shash || !data.data || !digest.data) 199 return -EFAULT; 200 201 if (alg->digest_size > digest.len) 202 return -EINVAL; 203 204 desc->tfm = alg->shash; 205 return crypto_shash_digest(desc, data.data, data.len, digest.data); 206 } 207 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org