[PATCH net 3/4] security: add sctp_assoc_established hook

[kernel test robot]

Hi Xin,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net/master]

url:    https://github.com/0day-ci/linux/commits/Xin-Long/security-fixups-for-the-security-hooks-in-sctp/20211022-143827
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 397430b50a363d8b7bdda00522123f82df6adc5e
config: hexagon-randconfig-r041-20211025 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project a461fa64bb37cffd73f683c74f6b0780379fc2ca)
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://github.com/0day-ci/linux/commit/32fba59611e67404b515f7864aa67a3abd2f7978
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Xin-Long/security-fixups-for-the-security-hooks-in-sctp/20211022-143827
        git checkout 32fba59611e67404b515f7864aa67a3abd2f7978
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/gpu/drm/vgem/vgem_drv.c:36:
   In file included from include/linux/shmem_fs.h:11:
   In file included from include/linux/fs_parser.h:11:
   In file included from include/linux/fs_context.h:14:
   include/linux/security.h:1651:2: error: void function 'security_sctp_assoc_established' should not return a value [-Wreturn-type]
           return 0;
           ^      ~
>> drivers/gpu/drm/vgem/vgem_drv.c:460:10: warning: shift count >= width of type [-Wshift-count-overflow]
                                        DMA_BIT_MASK(64));
                                        ^~~~~~~~~~~~~~~~
   include/linux/dma-mapping.h:76:54: note: expanded from macro 'DMA_BIT_MASK'
   #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
                                                        ^ ~~~
   1 warning and 1 error generated.


vim +460 drivers/gpu/drm/vgem/vgem_drv.c

502e95c6678505 Zach Reizner  2015-03-04  444  
502e95c6678505 Zach Reizner  2015-03-04  445  static int __init vgem_init(void)
502e95c6678505 Zach Reizner  2015-03-04  446  {
502e95c6678505 Zach Reizner  2015-03-04  447  	int ret;
bcc0ef7f57e51e Daniel Vetter 2020-09-09  448  	struct platform_device *pdev;
502e95c6678505 Zach Reizner  2015-03-04  449  
bcc0ef7f57e51e Daniel Vetter 2020-09-09  450  	pdev = platform_device_register_simple("vgem", -1, NULL, 0);
bcc0ef7f57e51e Daniel Vetter 2020-09-09  451  	if (IS_ERR(pdev))
bcc0ef7f57e51e Daniel Vetter 2020-09-09  452  		return PTR_ERR(pdev);
e2aff44868ae60 Laura Abbott  2017-05-04  453  
bcc0ef7f57e51e Daniel Vetter 2020-09-09  454  	if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
bcc0ef7f57e51e Daniel Vetter 2020-09-09  455  		ret = -ENOMEM;
bcc0ef7f57e51e Daniel Vetter 2020-09-09  456  		goto out_unregister;
502e95c6678505 Zach Reizner  2015-03-04  457  	}
502e95c6678505 Zach Reizner  2015-03-04  458  
bcc0ef7f57e51e Daniel Vetter 2020-09-09  459  	dma_coerce_mask_and_coherent(&pdev->dev,
e2aff44868ae60 Laura Abbott  2017-05-04 @460  				     DMA_BIT_MASK(64));
bcc0ef7f57e51e Daniel Vetter 2020-09-09  461  
bcc0ef7f57e51e Daniel Vetter 2020-09-09  462  	vgem_device = devm_drm_dev_alloc(&pdev->dev, &vgem_driver,
bcc0ef7f57e51e Daniel Vetter 2020-09-09  463  					 struct vgem_device, drm);
bcc0ef7f57e51e Daniel Vetter 2020-09-09  464  	if (IS_ERR(vgem_device)) {
bcc0ef7f57e51e Daniel Vetter 2020-09-09  465  		ret = PTR_ERR(vgem_device);
bcc0ef7f57e51e Daniel Vetter 2020-09-09  466  		goto out_devres;
bcc0ef7f57e51e Daniel Vetter 2020-09-09  467  	}
bcc0ef7f57e51e Daniel Vetter 2020-09-09  468  	vgem_device->platform = pdev;
e2aff44868ae60 Laura Abbott  2017-05-04  469  
315f0242aa2b1e Chris Wilson  2017-05-08  470  	/* Final step: expose the device/driver to userspace */
315f0242aa2b1e Chris Wilson  2017-05-08  471  	ret = drm_dev_register(&vgem_device->drm, 0);
502e95c6678505 Zach Reizner  2015-03-04  472  	if (ret)
bcc0ef7f57e51e Daniel Vetter 2020-09-09  473  		goto out_devres;
502e95c6678505 Zach Reizner  2015-03-04  474  
502e95c6678505 Zach Reizner  2015-03-04  475  	return 0;
502e95c6678505 Zach Reizner  2015-03-04  476  
bcc0ef7f57e51e Daniel Vetter 2020-09-09  477  out_devres:
bcc0ef7f57e51e Daniel Vetter 2020-09-09  478  	devres_release_group(&pdev->dev, NULL);
d5c04dff24870e Deepak Sharma 2018-10-23  479  out_unregister:
bcc0ef7f57e51e Daniel Vetter 2020-09-09  480  	platform_device_unregister(pdev);
502e95c6678505 Zach Reizner  2015-03-04  481  	return ret;
502e95c6678505 Zach Reizner  2015-03-04  482  }
502e95c6678505 Zach Reizner  2015-03-04  483  

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