linux-kernel - kernel/dma/debug.c:95: warning: Function parameter or member 'stack_len' not described in 'dma_debug

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <202312181548.9Xq6Tt63-lkp@intel.com>
Date: Mon, 18 Dec 2023 15:25:03 +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,
	Christoph Hellwig <hch@....de>,
	Josh Poimboeuf <jpoimboe@...hat.com>
Subject: kernel/dma/debug.c:95: warning: Function parameter or member
 'stack_len' not described in 'dma_debug_entry'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ceb6a6f023fd3e8b07761ed900352ef574010bcb
commit: 746017ed8d4d3c2070bb03aee9536f24da43c778 dma/debug: Simplify stracktrace retrieval
date:   4 years, 8 months ago
config: x86_64-buildonly-randconfig-006-20230830 (https://download.01.org/0day-ci/archive/20231218/202312181548.9Xq6Tt63-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/20231218/202312181548.9Xq6Tt63-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/202312181548.9Xq6Tt63-lkp@intel.com/

All warnings (new ones prefixed by >>):

   kernel/dma/debug.c:95: warning: Function parameter or member 'dev_addr' not described in 'dma_debug_entry'
>> kernel/dma/debug.c:95: warning: Function parameter or member 'stack_len' not described in 'dma_debug_entry'
>> kernel/dma/debug.c:95: warning: Function parameter or member 'stack_entries' not described in 'dma_debug_entry'


vim +95 kernel/dma/debug.c

6c132d1bcdc716 lib/dma-debug.c    David Woodhouse 2009-01-19  64  
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  65  /**
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  66   * struct dma_debug_entry - track a dma_map* or dma_alloc_coherent mapping
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  67   * @list: node on pre-allocated free_entries list
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  68   * @dev: 'dev' argument to dma_map_{page|single|sg} or dma_alloc_coherent
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  69   * @type: single, page, sg, coherent
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  70   * @pfn: page frame of the start address
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  71   * @offset: offset of mapping relative to pfn
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  72   * @size: length of the mapping
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  73   * @direction: enum dma_data_direction
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  74   * @sg_call_ents: 'nents' from dma_map_sg
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  75   * @sg_mapped_ents: 'mapped_ents' from dma_map_sg
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  76   * @map_err_type: track whether dma_mapping_error() was checked
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  77   * @stacktrace: support backtraces when a violation is detected
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  78   */
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  79  struct dma_debug_entry {
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  80  	struct list_head list;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  81  	struct device    *dev;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  82  	int              type;
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  83  	unsigned long	 pfn;
0abdd7a81b7e3f lib/dma-debug.c    Dan Williams    2014-01-21  84  	size_t		 offset;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  85  	u64              dev_addr;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  86  	u64              size;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  87  	int              direction;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  88  	int		 sg_call_ents;
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  89  	int		 sg_mapped_ents;
6c9c6d6301287e lib/dma-debug.c    Shuah Khan      2012-10-08  90  	enum map_err_types  map_err_type;
6c132d1bcdc716 lib/dma-debug.c    David Woodhouse 2009-01-19  91  #ifdef CONFIG_STACKTRACE
746017ed8d4d3c kernel/dma/debug.c Thomas Gleixner 2019-04-25  92  	unsigned int	stack_len;
746017ed8d4d3c kernel/dma/debug.c Thomas Gleixner 2019-04-25  93  	unsigned long	stack_entries[DMA_DEBUG_STACKTRACE_ENTRIES];
6c132d1bcdc716 lib/dma-debug.c    David Woodhouse 2009-01-19  94  #endif
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09 @95  };
f2f45e5f3c921c lib/dma-debug.c    Joerg Roedel    2009-01-09  96  

:::::: The code at line 95 was first introduced by commit
:::::: f2f45e5f3c921c73c913e9a9c00f21ec01c86b4d dma-debug: add header file and core data structures

:::::: TO: Joerg Roedel <joerg.roedel@....com>
:::::: CC: Joerg Roedel <joerg.roedel@....com>

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