linux-kernel - Re: [PATCH 1/5] security, overlayfs: provide copy up security hook for unioned files

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Date:	Wed, 6 Jul 2016 00:53:57 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Vivek Goyal <vgoyal@...hat.com>
Cc:	kbuild-all@...org, miklos@...redi.hu, sds@...ho.nsa.gov,
	linux-kernel@...r.kernel.org, linux-unionfs@...r.kernel.org,
	linux-security-module@...r.kernel.org, dwalsh@...hat.com,
	dhowells@...hat.com, pmoore@...hat.com, viro@...IV.linux.org.uk,
	vgoyal@...hat.com, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 1/5] security, overlayfs: provide copy up security hook
 for unioned files

Hi,

[auto build test ERROR on miklos-vfs/overlayfs-next]
[also build test ERROR on v4.7-rc6 next-20160705]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Vivek-Goyal/Overlayfs-SELinux-Support/20160706-000037
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-next
config: i386-randconfig-s0-201627 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   fs/overlayfs/copy_up.c: In function 'ovl_copy_up_locked':
>> fs/overlayfs/copy_up.c:262:39: error: passing argument 2 of 'security_inode_copy_up' from incompatible pointer type [-Werror=incompatible-pointer-types]
     err = security_inode_copy_up(dentry, &old_creds);
                                          ^
   In file included from fs/overlayfs/copy_up.c:16:0:
   include/linux/security.h:762:19: note: expected 'struct dentry *' but argument is of type 'const struct cred **'
    static inline int security_inode_copy_up(struct dentry *src, struct dentry *dst)
                      ^~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/security_inode_copy_up +262 fs/overlayfs/copy_up.c

   256		upper = lookup_one_len(dentry->d_name.name, upperdir,
   257				       dentry->d_name.len);
   258		err = PTR_ERR(upper);
   259		if (IS_ERR(upper))
   260			goto out1;
   261	
 > 262		err = security_inode_copy_up(dentry, &old_creds);
   263		if (err < 0)
   264			goto out2;
   265	

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0-DAY kernel test infrastructure                Open Source Technology Center
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