linux-kernel - Re: [PATCH v2] tpm: Opt-in in disable PCR integrity protection

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Message-ID: <202411080436.fb2O1apj-lkp@intel.com>
Date: Fri, 8 Nov 2024 04:43:12 +0800
From: kernel test robot <lkp@...el.com>
To: Jarkko Sakkinen <jarkko@...nel.org>, linux-integrity@...r.kernel.org,
	Jonathan Corbet <corbet@....net>, Peter Huewe <peterhuewe@....de>,
	Jason Gunthorpe <jgg@...pe.ca>,
	James Bottomley <James.Bottomley@...senpartnership.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	Roberto Sassu <roberto.sassu@...wei.com>,
	Mimi Zohar <zohar@...ux.ibm.com>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] tpm: Opt-in in disable PCR integrity protection

Hi Jarkko,

kernel test robot noticed the following build errors:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on char-misc/char-misc-next char-misc/char-misc-linus linus/master v6.12-rc6 next-20241107]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jarkko-Sakkinen/tpm-Opt-in-in-disable-PCR-integrity-protection/20241107-175515
base:   char-misc/char-misc-testing
patch link:    https://lore.kernel.org/r/20241107095138.78209-1-jarkko%40kernel.org
patch subject: [PATCH v2] tpm: Opt-in in disable PCR integrity protection
config: arm-randconfig-003-20241108 (https://download.01.org/0day-ci/archive/20241108/202411080436.fb2O1apj-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241108/202411080436.fb2O1apj-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202411080436.fb2O1apj-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/char/tpm/tpm2-cmd.c:14:
   In file included from drivers/char/tpm/tpm.h:28:
   include/linux/tpm_eventlog.h:167:6: warning: variable 'mapping_size' set but not used [-Wunused-but-set-variable]
           int mapping_size;
               ^
>> drivers/char/tpm/tpm2-cmd.c:253:42: error: too few arguments to function call, expected 4, have 3
                   tpm_buf_append_name(chip, &buf, pcr_idx);
                   ~~~~~~~~~~~~~~~~~~~                    ^
   include/linux/tpm.h:504:6: note: 'tpm_buf_append_name' declared here
   void tpm_buf_append_name(struct tpm_chip *chip, struct tpm_buf *buf,
        ^
   1 warning and 1 error generated.


vim +253 drivers/char/tpm/tpm2-cmd.c

   222	
   223	/**
   224	 * tpm2_pcr_extend() - extend a PCR value
   225	 *
   226	 * @chip:	TPM chip to use.
   227	 * @pcr_idx:	index of the PCR.
   228	 * @digests:	list of pcr banks and corresponding digest values to extend.
   229	 *
   230	 * Return: Same as with tpm_transmit_cmd.
   231	 */
   232	int tpm2_pcr_extend(struct tpm_chip *chip, u32 pcr_idx,
   233			    struct tpm_digest *digests)
   234	{
   235		struct tpm_buf buf;
   236		int rc;
   237		int i;
   238	
   239		if (!disable_pcr_integrity_protection) {
   240			rc = tpm2_start_auth_session(chip);
   241			if (rc)
   242				return rc;
   243		}
   244	
   245		rc = tpm_buf_init(&buf, TPM2_ST_SESSIONS, TPM2_CC_PCR_EXTEND);
   246		if (rc) {
   247			if (!disable_pcr_integrity_protection)
   248				tpm2_end_auth_session(chip);
   249			return rc;
   250		}
   251	
   252		if (!disable_pcr_integrity_protection) {
 > 253			tpm_buf_append_name(chip, &buf, pcr_idx);
   254			tpm_buf_append_hmac_session(chip, &buf, 0, NULL, 0);
   255		} else {
   256			tpm_buf_append_handle(chip, &buf, pcr_idx);
   257			tpm_buf_append_auth(chip, &buf, 0, NULL, 0);
   258		}
   259	
   260		tpm_buf_append_u32(&buf, chip->nr_allocated_banks);
   261	
   262		for (i = 0; i < chip->nr_allocated_banks; i++) {
   263			tpm_buf_append_u16(&buf, digests[i].alg_id);
   264			tpm_buf_append(&buf, (const unsigned char *)&digests[i].digest,
   265				       chip->allocated_banks[i].digest_size);
   266		}
   267	
   268		if (!disable_pcr_integrity_protection)
   269			tpm_buf_fill_hmac_session(chip, &buf);
   270		rc = tpm_transmit_cmd(chip, &buf, 0, "attempting extend a PCR value");
   271		if (!disable_pcr_integrity_protection)
   272			rc = tpm_buf_check_hmac_response(chip, &buf, rc);
   273	
   274		tpm_buf_destroy(&buf);
   275	
   276		return rc;
   277	}
   278	

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