linux-kernel - Re: [PATCH bpf-next 1/2] bpf: Add struct bpf_token

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Message-ID: <202507122257.0a0VYeq4-lkp@intel.com>
Date: Sat, 12 Jul 2025 23:18:41 +0800
From: kernel test robot <lkp@...el.com>
To: Tao Chen <chen.dylane@...ux.dev>, ast@...nel.org, daniel@...earbox.net,
	andrii@...nel.org, martin.lau@...ux.dev, eddyz87@...il.com,
	song@...nel.org, yonghong.song@...ux.dev, john.fastabend@...il.com,
	kpsingh@...nel.org, sdf@...ichev.me, haoluo@...gle.com,
	jolsa@...nel.org, willemb@...gle.com, kerneljasonxing@...il.com
Cc: oe-kbuild-all@...ts.linux.dev, bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org, Tao Chen <chen.dylane@...ux.dev>
Subject: Re: [PATCH bpf-next 1/2] bpf: Add struct bpf_token_info

Hi Tao,

kernel test robot noticed the following build warnings:

[auto build test WARNING on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Tao-Chen/bpf-selftests-Add-selftests-for-token-info/20250711-175057
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20250711094517.931999-1-chen.dylane%40linux.dev
patch subject: [PATCH bpf-next 1/2] bpf: Add struct bpf_token_info
config: csky-randconfig-r111-20250712 (https://download.01.org/0day-ci/archive/20250712/202507122257.0a0VYeq4-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 15.1.0
reproduce: (https://download.01.org/0day-ci/archive/20250712/202507122257.0a0VYeq4-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507122257.0a0VYeq4-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> kernel/bpf/token.c:104:31: sparse: sparse: symbol 'bpf_token_iops' was not declared. Should it be static?
   kernel/bpf/token.c: note: in included file (through include/linux/uaccess.h, include/linux/sched/task.h, include/linux/sched/signal.h, ...):
   arch/csky/include/asm/uaccess.h:110:17: sparse: sparse: cast removes address space '__user' of expression
   arch/csky/include/asm/uaccess.h:110:17: sparse: sparse: asm output is not an lvalue
   arch/csky/include/asm/uaccess.h:110:17: sparse: sparse: cast removes address space '__user' of expression
   arch/csky/include/asm/uaccess.h:110:17: sparse: sparse: generating address of non-lvalue (11)

vim +/bpf_token_iops +104 kernel/bpf/token.c

   103	
 > 104	const struct inode_operations bpf_token_iops = { };
   105	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki