Re: [RFC 2/3] io_uring: enable io_uring to submit sqes located in kernel

[kernel test robot <lkp@intel.com>]

Hi Xiaoguang,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf/master]
[also build test WARNING on axboe-block/for-next linus/master v6.2-rc8]
[cannot apply to bpf-next/master next-20230215]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Xiaoguang-Wang/bpf-add-UBLK-program-type/20230215-084242
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master
patch link:    https://lore.kernel.org/r/20230215004122.28917-3-xiaoguang.wang%40linux.alibaba.com
patch subject: [RFC 2/3] io_uring: enable io_uring to submit sqes located in kernel
config: arm-zeus_defconfig (https://download.01.org/0day-ci/archive/20230215/202302152219.3euu62fj-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/0d433a1cf7f666e5596514da7fab92f2691463ad
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Xiaoguang-Wang/bpf-add-UBLK-program-type/20230215-084242
        git checkout 0d433a1cf7f666e5596514da7fab92f2691463ad
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash kernel/sched/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302152219.3euu62fj-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/bits.h:6,
                    from include/linux/ratelimit_types.h:5,
                    from include/linux/printk.h:9,
                    from include/asm-generic/bug.h:22,
                    from arch/arm/include/asm/bug.h:60,
                    from include/linux/bug.h:5,
                    from include/linux/thread_info.h:13,
                    from include/asm-generic/preempt.h:5,
                    from ./arch/arm/include/generated/asm/preempt.h:1,
                    from include/linux/preempt.h:78,
                    from include/linux/spinlock.h:56,
                    from include/linux/wait.h:9,
                    from include/linux/wait_bit.h:8,
                    from include/linux/fs.h:6,
                    from include/linux/highmem.h:5,
                    from kernel/sched/core.c:9:
>> include/vdso/bits.h:7:40: warning: left shift count >= width of type [-Wshift-count-overflow]
       7 | #define BIT(nr)                 (UL(1) << (nr))
         |                                        ^~
   include/linux/io_uring_types.h:472:35: note: in expansion of macro 'BIT'
     472 |         REQ_F_KBUF              = BIT(REQ_F_KBUF_BIT),
         |                                   ^~~


vim +7 include/vdso/bits.h

3945ff37d2f48d Vincenzo Frascino 2020-03-20  6  
3945ff37d2f48d Vincenzo Frascino 2020-03-20 @7  #define BIT(nr)			(UL(1) << (nr))
3945ff37d2f48d Vincenzo Frascino 2020-03-20  8  

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https://github.com/intel/lkp-tests