On 8/21/24 18:52, kernel test robot wrote:

Hi Paolo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on net-next/main]

url:    https://github.com/intel-lab-lkp/linux/commits/Paolo-Abeni/tools-ynl-lift-an-assumption-about-spec-file-name/20240820-231626
base:   net-next/main
patch link:    https://lore.kernel.org/r/4cf74f285fa5f07be546cb83ef96775f86aa0dbf.1724165948.git.pabeni%40redhat.com
patch subject: [PATCH v4 net-next 09/12] testing: net-drv: add basic shaper test
config: hexagon-randconfig-r112-20240821 (https://download.01.org/0day-ci/archive/20240822/202408220027.kA3pRF6J-lkp@intel.com/config)
compiler: clang version 16.0.6 (https://github.com/llvm/llvm-project 7cbf1a2591520c2491aa35339f227775f4d3adf6)
reproduce: (https://download.01.org/0day-ci/archive/20240822/202408220027.kA3pRF6J-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 [off-list ref]
| Closes: https://lore.kernel.org/oe-kbuild-all/202408220027.kA3pRF6J-lkp@intel.com/ (local)

sparse warnings: (new ones prefixed by >>)

quoted

quoted

net/shaper/shaper.c:227:24: sparse: sparse: Using plain integer as NULL pointer

AFAICS this warning comes directly from/is due to the hexgon cmpxchg 
implementation:

#define arch_cmpxchg(ptr, old, new)                             \
({                                                              \
         __typeof__(ptr) __ptr = (ptr);                          \
         __typeof__(*(ptr)) __old = (old);                       \
         __typeof__(*(ptr)) __new = (new);                       \
         __typeof__(*(ptr)) __oldval = 0;                        \
				^^^^^^^ here.

Cheers,

Paolo