[linux-next:master 3297/12941] drivers/gpu/drm/msm/msm_fence.c:24:9: warning: 'strncpy' specified bound 32 equals destination size

* [linux-next:master 3297/12941] drivers/gpu/drm/msm/msm_fence.c:24:9: warning: 'strncpy' specified bound 32 equals destination size
@ 2021-11-02 21:18 ` kernel test robot
  0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2021-11-02 21:18 UTC (permalink / raw)
  To: Christian König; +Cc: kbuild-all, Linux Memory Management List, Rob Clark

[-- Attachment #1: Type: text/plain, Size: 3333 bytes --]

Hi Christian,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   9150de4aac1eb6e6441b2b086f6ca8132aaea040
commit: b3ed524f84f573ece1aa2f26e9db3c34a593e0d1 [3297/12941] drm/msm: allow compile_test on !ARM
config: alpha-randconfig-r002-20211103 (attached as .config)
compiler: alpha-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=b3ed524f84f573ece1aa2f26e9db3c34a593e0d1
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout b3ed524f84f573ece1aa2f26e9db3c34a593e0d1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=alpha 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/gpu/drm/msm/msm_fence.c: In function 'msm_fence_context_alloc':
>> drivers/gpu/drm/msm/msm_fence.c:24:9: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation]
      24 |         strncpy(fctx->name, name, sizeof(fctx->name));
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

vim +/strncpy +24 drivers/gpu/drm/msm/msm_fence.c

fde5de6cb4617a1 Rob Clark     2016-03-15  11  
ca762a8ae7f4539 Rob Clark     2016-03-15  12  
ca762a8ae7f4539 Rob Clark     2016-03-15  13  struct msm_fence_context *
da3d378dec86348 Rob Clark     2021-07-26  14  msm_fence_context_alloc(struct drm_device *dev, volatile uint32_t *fenceptr,
da3d378dec86348 Rob Clark     2021-07-26  15  		const char *name)
ca762a8ae7f4539 Rob Clark     2016-03-15  16  {
ca762a8ae7f4539 Rob Clark     2016-03-15  17  	struct msm_fence_context *fctx;
ca762a8ae7f4539 Rob Clark     2016-03-15  18  
ca762a8ae7f4539 Rob Clark     2016-03-15  19  	fctx = kzalloc(sizeof(*fctx), GFP_KERNEL);
ca762a8ae7f4539 Rob Clark     2016-03-15  20  	if (!fctx)
ca762a8ae7f4539 Rob Clark     2016-03-15  21  		return ERR_PTR(-ENOMEM);
ca762a8ae7f4539 Rob Clark     2016-03-15  22  
ca762a8ae7f4539 Rob Clark     2016-03-15  23  	fctx->dev = dev;
f97decac5f4c2d8 Jordan Crouse 2017-10-20 @24  	strncpy(fctx->name, name, sizeof(fctx->name));
f54d1867005c332 Chris Wilson  2016-10-25  25  	fctx->context = dma_fence_context_alloc(1);
da3d378dec86348 Rob Clark     2021-07-26  26  	fctx->fenceptr = fenceptr;
b6295f9a38fc3f7 Rob Clark     2016-03-15  27  	spin_lock_init(&fctx->spinlock);
ca762a8ae7f4539 Rob Clark     2016-03-15  28  
ca762a8ae7f4539 Rob Clark     2016-03-15  29  	return fctx;
ca762a8ae7f4539 Rob Clark     2016-03-15  30  }
ca762a8ae7f4539 Rob Clark     2016-03-15  31  

:::::: The code at line 24 was first introduced by commit
:::::: f97decac5f4c2d862e5b848694e3ffb29fc8acdd drm/msm: Support multiple ringbuffers

:::::: TO: Jordan Crouse <jcrouse@codeaurora.org>
:::::: CC: Rob Clark <robdclark@gmail.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 35031 bytes --]

^ permalink raw reply	[flat|nested] 2+ messages in thread