linux-kernel - kernel/stacktrace.c:138: warning: Function parameter or member 'tsk' not described in 'stack_trace_save

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Message-ID: <202311182316.IieU4Dl1-lkp@intel.com>
Date:   Sat, 18 Nov 2023 23:11:23 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Josh Poimboeuf <jpoimboe@...hat.com>
Subject: kernel/stacktrace.c:138: warning: Function parameter or member 'tsk'
 not described in 'stack_trace_save_tsk'

Hi Thomas,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   791c8ab095f71327899023223940dd52257a4173
commit: 214d8ca6ee854f696f75e75511fe66b409e656db stacktrace: Provide common infrastructure
date:   4 years, 7 months ago
config: i386-allnoconfig (https://download.01.org/0day-ci/archive/20231118/202311182316.IieU4Dl1-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231118/202311182316.IieU4Dl1-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/202311182316.IieU4Dl1-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/stacktrace.c:138: warning: Function parameter or member 'tsk' not described in 'stack_trace_save_tsk'
>> kernel/stacktrace.c:138: warning: Excess function parameter 'task' description in 'stack_trace_save_tsk'


vim +138 kernel/stacktrace.c

   126	
   127	/**
   128	 * stack_trace_save_tsk - Save a task stack trace into a storage array
   129	 * @task:	The task to examine
   130	 * @store:	Pointer to storage array
   131	 * @size:	Size of the storage array
   132	 * @skipnr:	Number of entries to skip at the start of the stack trace
   133	 *
   134	 * Return: Number of trace entries stored.
   135	 */
   136	unsigned int stack_trace_save_tsk(struct task_struct *tsk, unsigned long *store,
   137					  unsigned int size, unsigned int skipnr)
 > 138	{
   139		stack_trace_consume_fn consume_entry = stack_trace_consume_entry_nosched;
   140		struct stacktrace_cookie c = {
   141			.store	= store,
   142			.size	= size,
   143			.skip	= skipnr + 1,
   144		};
   145	
   146		if (!try_get_task_stack(tsk))
   147			return 0;
   148	
   149		arch_stack_walk(consume_entry, &c, tsk, NULL);
   150		put_task_stack(tsk);
   151		return c.len;
   152	}
   153	

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