Hi Vincenzo, I love your patch! Yet something to improve: [auto build test ERROR on next-20210211] [cannot apply to arm64/for-next/core xlnx/master arm/for-next soc/for-next kvmarm/next linus/master hnaz-linux-mm/master v5.11-rc7 v5.11-rc6 v5.11-rc5 v5.11-rc7] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210212-004947 base: 671176b0016c80b3943cb5387312c886aba3308d config: arm64-allyesconfig (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/0ea84467dcc53cac5c8d4e636c4d6f24e6c58728 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210212-004947 git checkout 0ea84467dcc53cac5c8d4e636c4d6f24e6c58728 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): aarch64-linux-ld: mm/kasan/report.o: in function `end_report': report.c:(.text+0x18): undefined reference to `kasan_flag_async' aarch64-linux-ld: mm/kasan/report.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `kasan_flag_async' which may bind externally can not be used when making a shared object; recompile with -fPIC report.c:(.text+0x18): dangerous relocation: unsupported relocation aarch64-linux-ld: report.c:(.text+0x1c): undefined reference to `kasan_flag_async' aarch64-linux-ld: lib/test_kasan.o: in function `kasan_test_init': test_kasan.c:(.text+0xccf0): undefined reference to `kasan_flag_async' aarch64-linux-ld: lib/test_kasan.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `kasan_flag_async' which may bind externally can not be used when making a shared object; recompile with -fPIC test_kasan.c:(.text+0xccf0): dangerous relocation: unsupported relocation >> aarch64-linux-ld: test_kasan.c:(.text+0xccfc): undefined reference to `kasan_flag_async' aarch64-linux-ld: test_kasan.c:(.text+0xcd04): undefined reference to `kasan_flag_async' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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