linux-kernel - Re: [PATCH] net: ethernet: fix uninitialized pointers with free attr

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Message-ID: <202511061627.TYBaNPrX-lkp@intel.com>
Date: Thu, 6 Nov 2025 17:06:39 +0800
From: kernel test robot <lkp@...el.com>
To: Ally Heev <allyheev@...il.com>,
	Tony Nguyen <anthony.l.nguyen@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>
Cc: oe-kbuild-all@...ts.linux.dev, netdev@...r.kernel.org,
	intel-wired-lan@...ts.osuosl.org, linux-kernel@...r.kernel.org,
	linux-hyperv@...r.kernel.org, Dan Carpenter <error27@...il.com>,
	Ally Heev <allyheev@...il.com>
Subject: Re: [PATCH] net: ethernet: fix uninitialized pointers with free attr

Hi Ally,

kernel test robot noticed the following build errors:

[auto build test ERROR on c9cfc122f03711a5124b4aafab3211cf4d35a2ac]

url:    https://github.com/intel-lab-lkp/linux/commits/Ally-Heev/net-ethernet-fix-uninitialized-pointers-with-free-attr/20251105-192022
base:   c9cfc122f03711a5124b4aafab3211cf4d35a2ac
patch link:    https://lore.kernel.org/r/20251105-aheev-uninitialized-free-attr-net-ethernet-v1-1-f6ea84bbd750%40gmail.com
patch subject: [PATCH] net: ethernet: fix uninitialized pointers with free attr
config: x86_64-randconfig-015-20251106 (https://download.01.org/0day-ci/archive/20251106/202511061627.TYBaNPrX-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251106/202511061627.TYBaNPrX-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/202511061627.TYBaNPrX-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/uapi/linux/posix_types.h:5,
                    from include/uapi/linux/types.h:14,
                    from include/linux/types.h:6,
                    from include/linux/objtool_types.h:7,
                    from include/linux/objtool.h:5,
                    from arch/x86/include/asm/bug.h:7,
                    from include/linux/bug.h:5,
                    from include/linux/vfsdebug.h:5,
                    from include/linux/fs.h:5,
                    from include/linux/debugfs.h:15,
                    from drivers/net/ethernet/microsoft/mana/gdma_main.c:4:
   drivers/net/ethernet/microsoft/mana/gdma_main.c: In function 'irq_setup':
>> include/linux/stddef.h:8:14: error: invalid initializer
       8 | #define NULL ((void *)0)
         |              ^
   drivers/net/ethernet/microsoft/mana/gdma_main.c:1508:55: note: in expansion of macro 'NULL'
    1508 |         cpumask_var_t cpus __free(free_cpumask_var) = NULL;
         |                                                       ^~~~


vim +8 include/linux/stddef.h

^1da177e4c3f41 Linus Torvalds   2005-04-16  6  
^1da177e4c3f41 Linus Torvalds   2005-04-16  7  #undef NULL
^1da177e4c3f41 Linus Torvalds   2005-04-16 @8  #define NULL ((void *)0)
6e218287432472 Richard Knutsson 2006-09-30  9  

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