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

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Message-ID: <26b0845236aeeedae68b20765376e6acf3bb0e97.camel@gmail.com>
Date: Thu, 06 Nov 2025 15:43:49 +0530
From: ally heev <allyheev@...il.com>
To: kernel test robot <lkp@...el.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>
Subject: Re: [PATCH] net: ethernet: fix uninitialized pointers with free attr

On Thu, 2025-11-06 at 17:06 +0800, kernel test robot wrote:
> 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  

Sorry. I think I messed up config somehow during build. Hence, couldn't
catch the error in local. Fixed in v2