linux-kernel - Re: [PATCH] eventfd: convert global percpu eventfd_wake_count to ctx percpu eventfd_wake

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Date:   Fri, 4 Jun 2021 23:03:16 +0800
From:   kernel test robot <lkp@...el.com>
To:     qiang.zhang@...driver.com, axboe@...nel.dk, viro@...iv.linux.org.uk
Cc:     kbuild-all@...ts.01.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] eventfd: convert global percpu eventfd_wake_count to ctx
 percpu eventfd_wake_count

Hi,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.13-rc4 next-20210604]
[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/qiang-zhang-windriver-com/eventfd-convert-global-percpu-eventfd_wake_count-to-ctx-percpu-eventfd_wake_count/20210604-154249
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f88cd3fb9df228e5ce4e13ec3dbad671ddb2146e
config: arm-randconfig-s031-20210604 (attached as .config)
compiler: arm-linux-gnueabi-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: v0.6.3-341-g8af24329-dirty
        # https://github.com/0day-ci/linux/commit/3cff73140b2b518eec3e30712d9c66bbde8ad375
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review qiang-zhang-windriver-com/eventfd-convert-global-percpu-eventfd_wake_count-to-ctx-percpu-eventfd_wake_count/20210604-154249
        git checkout 3cff73140b2b518eec3e30712d9c66bbde8ad375
        # 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__' W=1 ARCH=arm 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)
   fs/aio.c:588:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __percpu *__pdata @@     got struct kioctx_cpu *cpu @@
   fs/aio.c:588:24: sparse:     expected void [noderef] __percpu *__pdata
   fs/aio.c:588:24: sparse:     got struct kioctx_cpu *cpu
   fs/aio.c:755:18: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected struct kioctx_cpu *cpu @@     got struct kioctx_cpu [noderef] __percpu * @@
   fs/aio.c:755:18: sparse:     expected struct kioctx_cpu *cpu
   fs/aio.c:755:18: sparse:     got struct kioctx_cpu [noderef] __percpu *
   fs/aio.c:802:24: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected void [noderef] __percpu *__pdata @@     got struct kioctx_cpu *cpu @@
   fs/aio.c:802:24: sparse:     expected void [noderef] __percpu *__pdata
   fs/aio.c:802:24: sparse:     got struct kioctx_cpu *cpu
   fs/aio.c:907:16: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct kioctx_cpu * @@
   fs/aio.c:907:16: sparse:     expected void const [noderef] __percpu *__vpp_verify
   fs/aio.c:907:16: sparse:     got struct kioctx_cpu *
   fs/aio.c:925:16: sparse: sparse: incorrect type in initializer (different address spaces) @@     expected void const [noderef] __percpu *__vpp_verify @@     got struct kioctx_cpu * @@
   fs/aio.c:925:16: sparse:     expected void const [noderef] __percpu *__vpp_verify
   fs/aio.c:925:16: sparse:     got struct kioctx_cpu *
   fs/aio.c: note: in included file:
>> include/linux/eventfd.h:46:33: sparse: sparse: marked inline, but without a definition

vim +46 include/linux/eventfd.h

    45	
  > 46	inline bool eventfd_signal_count(struct eventfd_ctx *ctx);
    47	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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