On Thu, Feb 11, 2021 at 9:04 PM kernel test robot [off-list ref] wrote:

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: riscv-randconfig-s031-20210209 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-215-g0fb77bb6-dirty
        # https://github.com/0day-ci/linux/commit/df25c9583cd523a49f2407e0aeee55bdec24a14e
        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 df25c9583cd523a49f2407e0aeee55bdec24a14e
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=riscv

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

   riscv64-linux-ld: mm/kasan/report.o: in function `.L0 ':
   report.c:(.text+0x480): undefined reference to `kasan_flag_async'

quoted

quoted

riscv64-linux-ld: report.c:(.text+0x5c4): undefined reference to `kasan_flag_async'

Let's do something like this (untested):

https://github.com/xairy/linux/commit/91354d34b30ceedbc1b6417f1ff253de90618a97

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