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From: kernel test robot <lkp@intel.com>
To: Roberto Sassu <roberto.sassu@huawei.com>,
	zohar@linux.ibm.com, mjg59@google.com
Cc: kbuild-all@lists.01.org, linux-integrity@vger.kernel.org,
	linux-security-module@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Roberto Sassu <roberto.sassu@huawei.com>,
	Christian Brauner <christian.brauner@ubuntu.com>,
	Andreas Gruenbacher <agruenba@redhat.com>
Subject: Re: [PATCH v5 09/12] evm: Allow setxattr() and setattr() for unmodified metadata
Date: Thu, 8 Apr 2021 02:14:35 +0800
Message-ID: <202104080245.Cn25aFdH-lkp@intel.com> (raw)
In-Reply-To: <20210407105252.30721-10-roberto.sassu@huawei.com>


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Hi Roberto,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on security/next-testing]
[also build test ERROR on integrity/next-integrity linus/master v5.12-rc6 next-20210407]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Roberto-Sassu/evm-Improve-usability-of-portable-signatures/20210407-185747
base:   https://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git next-testing
config: nios2-randconfig-s031-20210407 (attached as .config)
compiler: nios2-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-279-g6d5d9b42-dirty
        # https://github.com/0day-ci/linux/commit/1bdae98f0b81260a925cf7acf785dc10bb7787fe
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Roberto-Sassu/evm-Improve-usability-of-portable-signatures/20210407-185747
        git checkout 1bdae98f0b81260a925cf7acf785dc10bb7787fe
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=nios2 

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

All errors (new ones prefixed by >>):

   security/integrity/evm/evm_main.c: In function 'evm_xattr_acl_change':
>> security/integrity/evm/evm_main.c:365:7: error: implicit declaration of function 'posix_acl_update_mode'; did you mean 'posix_acl_equiv_mode'? [-Werror=implicit-function-declaration]
     365 |  rc = posix_acl_update_mode(mnt_userns, inode, &mode, &acl_res);
         |       ^~~~~~~~~~~~~~~~~~~~~
         |       posix_acl_equiv_mode
   cc1: some warnings being treated as errors


vim +365 security/integrity/evm/evm_main.c

   331	
   332	/*
   333	 * evm_xattr_acl_change - check if passed ACL changes the inode mode
   334	 * @mnt_userns: user namespace of the idmapped mount
   335	 * @dentry: pointer to the affected dentry
   336	 * @xattr_name: requested xattr
   337	 * @xattr_value: requested xattr value
   338	 * @xattr_value_len: requested xattr value length
   339	 *
   340	 * Check if passed ACL changes the inode mode, which is protected by EVM.
   341	 *
   342	 * Returns 1 if passed ACL causes inode mode change, 0 otherwise.
   343	 */
   344	static int evm_xattr_acl_change(struct user_namespace *mnt_userns,
   345					struct dentry *dentry, const char *xattr_name,
   346					const void *xattr_value, size_t xattr_value_len)
   347	{
   348		umode_t mode;
   349		struct posix_acl *acl = NULL, *acl_res;
   350		struct inode *inode = d_backing_inode(dentry);
   351		int rc;
   352	
   353		/* user_ns is not relevant here, ACL_USER/ACL_GROUP don't have impact
   354		 * on the inode mode (see posix_acl_equiv_mode()).
   355		 */
   356		acl = posix_acl_from_xattr(&init_user_ns, xattr_value, xattr_value_len);
   357		if (IS_ERR_OR_NULL(acl))
   358			return 1;
   359	
   360		acl_res = acl;
   361		/* Passing mnt_userns is necessary to correctly determine the GID in
   362		 * an idmapped mount, as the GID is used to clear the setgid bit in
   363		 * the inode mode.
   364		 */
 > 365		rc = posix_acl_update_mode(mnt_userns, inode, &mode, &acl_res);
   366	
   367		posix_acl_release(acl);
   368	
   369		if (rc)
   370			return 1;
   371	
   372		if (inode->i_mode != mode)
   373			return 1;
   374	
   375		return 0;
   376	}
   377	

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

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  parent reply index

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-07 10:52 [PATCH v5 00/12] evm: Improve usability of portable signatures Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 01/12] evm: Execute evm_inode_init_security() only when an HMAC key is loaded Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 02/12] evm: Load EVM key in ima_load_x509() to avoid appraisal Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 03/12] evm: Refuse EVM_ALLOW_METADATA_WRITES only if an HMAC key is loaded Roberto Sassu
2021-04-30 20:28   ` Mimi Zohar
2021-04-07 10:52 ` [PATCH v5 04/12] ima: Move ima_reset_appraise_flags() call to post hooks Roberto Sassu
2021-04-07 16:17   ` Casey Schaufler
2021-04-07 16:31     ` Roberto Sassu
2021-04-26 19:49     ` Mimi Zohar
2021-04-07 10:52 ` [PATCH v5 05/12] evm: Introduce evm_status_revalidate() Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 06/12] evm: Ignore INTEGRITY_NOLABEL/INTEGRITY_NOXATTRS if conditions are safe Roberto Sassu
2021-05-03  0:12   ` Mimi Zohar
2021-05-03  7:55     ` Roberto Sassu
2021-05-03 12:07       ` Mimi Zohar
2021-05-03 14:15       ` Roberto Sassu
2021-05-03 14:34         ` Mimi Zohar
2021-05-04 13:16           ` Roberto Sassu
2021-05-04 13:45             ` Mimi Zohar
2021-04-07 10:52 ` [PATCH v5 07/12] evm: Allow xattr/attr operations for portable signatures Roberto Sassu
2021-05-03  0:12   ` Mimi Zohar
2021-05-04 14:28     ` Roberto Sassu
2021-05-04 14:49       ` Mimi Zohar
2021-04-07 10:52 ` [PATCH v5 08/12] evm: Pass user namespace to set/remove xattr hooks Roberto Sassu
2021-04-07 12:06   ` Christian Brauner
2021-04-07 10:52 ` [PATCH v5 09/12] evm: Allow setxattr() and setattr() for unmodified metadata Roberto Sassu
2021-04-07 12:05   ` Christian Brauner
2021-04-07 15:23   ` kernel test robot
2021-04-07 18:14   ` kernel test robot [this message]
2021-04-07 19:28     ` [RESEND][PATCH " Roberto Sassu
2021-05-03 13:00   ` [PATCH " Mimi Zohar
2021-05-03 14:48     ` Roberto Sassu
2021-05-03 15:13       ` Mimi Zohar
2021-05-03 15:30         ` Roberto Sassu
2021-05-03 15:11     ` Roberto Sassu
2021-05-03 15:26       ` Mimi Zohar
2021-05-03 15:32         ` Roberto Sassu
2021-05-03 15:48           ` Mimi Zohar
2021-04-07 10:52 ` [PATCH v5 10/12] ima: Allow imasig requirement to be satisfied by EVM portable signatures Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 11/12] ima: Introduce template field evmsig and write to field sig as fallback Roberto Sassu
2021-04-07 10:52 ` [PATCH v5 12/12] ima: Don't remove security.ima if file must not be appraised Roberto Sassu

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