netdev - Re: [PATCH net-next v2 4/5] netconsole: Use printk context for CPU and task information

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Message-ID: <202601211304.r9ecHy9L-lkp@intel.com>
Date: Wed, 21 Jan 2026 13:40:30 +0800
From: kernel test robot <lkp@...el.com>
To: Breno Leitao <leitao@...ian.org>, 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>,
	pmladek@...e.com, john.ogness@...utronix.de
Cc: oe-kbuild-all@...ts.linux.dev, netdev@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	Sergey Senozhatsky <senozhatsky@...omium.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Memory Management List <linux-mm@...ck.org>,
	linux-kernel@...r.kernel.org, asantostc@...il.com, efault@....de,
	gustavold@...il.com, calvin@...nvd.org, jv@...sburgh.net,
	mpdesouza@...e.com, kernel-team@...a.com
Subject: Re: [PATCH net-next v2 4/5] netconsole: Use printk context for CPU
 and task information

Hi Breno,

kernel test robot noticed the following build errors:

[auto build test ERROR on 956f569c90ab507559342d289f4c923adfbf06f5]

url:    https://github.com/intel-lab-lkp/linux/commits/Breno-Leitao/printk-Add-execution-context-task-name-CPU-to-printk_info/20260121-033457
base:   956f569c90ab507559342d289f4c923adfbf06f5
patch link:    https://lore.kernel.org/r/20260120-nbcon-v2-4-b61f960587a8%40debian.org
patch subject: [PATCH net-next v2 4/5] netconsole: Use printk context for CPU and task information
config: csky-randconfig-r134-20260121 (https://download.01.org/0day-ci/archive/20260121/202601211304.r9ecHy9L-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260121/202601211304.r9ecHy9L-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/202601211304.r9ecHy9L-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   drivers/net/netconsole.c: In function 'sysdata_append_cpu_nr':
>> drivers/net/netconsole.c:1365:31: error: 'struct nbcon_write_context' has no member named 'cpu'
    1365 |                          wctxt->cpu);
         |                               ^~
   drivers/net/netconsole.c: In function 'sysdata_append_taskname':
>> drivers/net/netconsole.c:1373:31: error: 'struct nbcon_write_context' has no member named 'comm'
    1373 |                          wctxt->comm);
         |                               ^~
   drivers/net/netconsole.c: In function 'sysdata_append_cpu_nr':
>> drivers/net/netconsole.c:1366:1: warning: control reaches end of non-void function [-Wreturn-type]
    1366 | }
         | ^
   drivers/net/netconsole.c: In function 'sysdata_append_taskname':
   drivers/net/netconsole.c:1374:1: warning: control reaches end of non-void function [-Wreturn-type]
    1374 | }
         | ^


vim +1365 drivers/net/netconsole.c

  1359	
  1360	static int sysdata_append_cpu_nr(struct netconsole_target *nt, int offset,
  1361					 struct nbcon_write_context *wctxt)
  1362	{
  1363		return scnprintf(&nt->sysdata[offset],
  1364				 MAX_EXTRADATA_ENTRY_LEN, " cpu=%u\n",
> 1365				 wctxt->cpu);
> 1366	}
  1367	
  1368	static int sysdata_append_taskname(struct netconsole_target *nt, int offset,
  1369					   struct nbcon_write_context *wctxt)
  1370	{
  1371		return scnprintf(&nt->sysdata[offset],
  1372				 MAX_EXTRADATA_ENTRY_LEN, " taskname=%s\n",
> 1373				 wctxt->comm);
  1374	}
  1375	

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