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And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Chenghai-Huang/crypto-engine-clear-busy-and-recheck-running-in-the-retry-pump-loop/20261109-153553 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master patch link: https://lore.kernel.org/r/20261109073556.2517351-3-huangchenghai2%40huawei.com patch subject: [PATCH 2/4] crypto: engine - add acomp support config: arm-gemini_defconfig (https://download.01.org/0day-ci/archive/20261110/202611100938.hePDEbMz-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project b3e2466a7ef2bbc97d31230c3bf39a6fa50a608a) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261110/202611100938.hePDEbMz-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/202611100938.hePDEbMz-lkp@intel.com/ All errors (new ones prefixed by >>): >> ld.lld: error: undefined symbol: crypto_register_acomp >>> referenced by crypto_engine.c >>> crypto/crypto_engine.o:(crypto_engine_register_acomp) in archive vmlinux.a -- >> ld.lld: error: undefined symbol: crypto_unregister_acomp >>> referenced by crypto_engine.c >>> crypto/crypto_engine.o:(crypto_engine_unregister_acomp) in archive vmlinux.a -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki