Re: [RFC PATCH 2/2] audit accesses to unassigned PCI config regions

Re: [RFC PATCH 2/2] audit accesses to unassigned PCI config regions

[kernel test robot]

Hi Chathura,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build warnings:

[auto build test WARNING on f1a3944c860b0615d0513110d8cf62bb94adbb41]

url:    https://github.com/intel-lab-lkp/linux/commits/Chathura-Rajapaksha/block-accesses-to-unassigned-PCI-config-regions/20250427-052942
base:   f1a3944c860b0615d0513110d8cf62bb94adbb41
patch link:    https://lore.kernel.org/r/20250426212253.40473-3-chath%40bu.edu
patch subject: [RFC PATCH 2/2] audit accesses to unassigned PCI config regions
config: arm-randconfig-003-20250427 (https://download.01.org/0day-ci/archive/20250427/202504270713.ZepwWC7B-lkp@intel.com/config)
compiler: clang version 20.1.2 (https://github.com/llvm/llvm-project 58df0ef89dd64126512e4ee27b4ac3fd8ddf6247)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250427/202504270713.ZepwWC7B-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202504270713.ZepwWC7B-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/vfio/pci/vfio_pci_config.c:2011:32: warning: format specifies type 'long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
    2008 |                          "device=%04x:%02x:%02x.%d access=%s offset=0x%llx size=%ld blocked=%u\n",
         |                                                                                 ~~~
         |                                                                                 %zu
    2009 |                          pci_domain_nr(pdev->bus), pdev->bus->number,
    2010 |                          PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
    2011 |                          vfio_audit_str[op], *ppos, count, blocked);
         |                                                     ^~~~~
   1 warning generated.


vim +2011 drivers/vfio/pci/vfio_pci_config.c

  1994	
  1995	static void vfio_audit_access(const struct pci_dev *pdev,
  1996				      size_t count, loff_t *ppos, bool blocked, unsigned int op)
  1997	{
  1998		struct audit_buffer *ab;
  1999	
  2000		if (WARN_ON_ONCE(op >= VFIO_AUDIT_MAX))
  2001			return;
  2002		if (audit_enabled == AUDIT_OFF)
  2003			return;
  2004		ab = audit_log_start(audit_context(), GFP_ATOMIC, AUDIT_VFIO);
  2005		if (unlikely(!ab))
  2006			return;
  2007		audit_log_format(ab,
  2008				 "device=%04x:%02x:%02x.%d access=%s offset=0x%llx size=%ld blocked=%u\n",
  2009				 pci_domain_nr(pdev->bus), pdev->bus->number,
  2010				 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
> 2011				 vfio_audit_str[op], *ppos, count, blocked);
  2012		audit_log_end(ab);
  2013	}
  2014	

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