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

From: kbuild test robot
Date: Tue Jul 05 2016 - 12:55:12 EST


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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