[PATCH] integrity: support including firmware ".platform" keys at build time

kernel test robot lkp at intel.com
Sat Sep 11 00:53:44 UTC 2021


Hi Nayna,

I love your patch! Yet something to improve:

[auto build test ERROR on integrity/next-integrity]
[also build test ERROR on linus/master v5.14 next-20210910]
[cannot apply to security/next-testing]
[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/Nayna-Jain/integrity-support-including-firmware-platform-keys-at-build-time/20210911-012617
base:   https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git next-integrity
config: i386-randconfig-a003-20210910 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 261cbe98c38f8c1ee1a482fe76511110e790f58a)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/fb58bf03a2f9965a2e0cfdcb16d1bad2fc5f083a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Nayna-Jain/integrity-support-including-firmware-platform-keys-at-build-time/20210911-012617
        git checkout fb58bf03a2f9965a2e0cfdcb16d1bad2fc5f083a
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=i386 SHELL=/bin/bash

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

All error/warnings (new ones prefixed by >>):

>> certs/common.c:11:2: error: unknown type name 'key_ref_t'; did you mean 'key_perm_t'?
           key_ref_t key;
           ^~~~~~~~~
           key_perm_t
   include/linux/key.h:31:18: note: 'key_perm_t' declared here
   typedef uint32_t key_perm_t;
                    ^
>> certs/common.c:31:9: error: implicit declaration of function 'key_create_or_update' [-Werror,-Wimplicit-function-declaration]
                   key = key_create_or_update(make_key_ref(keyring, 1),
                         ^
>> certs/common.c:36:11: error: use of undeclared identifier 'KEY_POS_ALL'
                                              ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
                                                ^
>> certs/common.c:36:26: error: use of undeclared identifier 'KEY_POS_SETATTR'
                                              ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
                                                               ^
>> certs/common.c:37:9: error: use of undeclared identifier 'KEY_USR_VIEW'
                                              KEY_USR_VIEW | KEY_USR_READ),
                                              ^
>> certs/common.c:37:24: error: use of undeclared identifier 'KEY_USR_READ'
                                              KEY_USR_VIEW | KEY_USR_READ),
                                                             ^
>> certs/common.c:38:9: error: use of undeclared identifier 'KEY_ALLOC_NOT_IN_QUOTA'
                                              KEY_ALLOC_NOT_IN_QUOTA |
                                              ^
>> certs/common.c:39:9: error: use of undeclared identifier 'KEY_ALLOC_BUILT_IN'
                                              KEY_ALLOC_BUILT_IN |
                                              ^
>> certs/common.c:40:9: error: use of undeclared identifier 'KEY_ALLOC_BYPASS_RESTRICTION'
                                              KEY_ALLOC_BYPASS_RESTRICTION);
                                              ^
>> certs/common.c:41:14: warning: incompatible integer to pointer conversion passing 'key_perm_t' (aka 'unsigned int') to parameter of type 'const void *' [-Wint-conversion]
                   if (IS_ERR(key)) {
                              ^~~
   include/linux/err.h:34:60: note: passing argument to parameter 'ptr' here
   static inline bool __must_check IS_ERR(__force const void *ptr)
                                                              ^
   certs/common.c:43:19: warning: incompatible integer to pointer conversion passing 'key_perm_t' (aka 'unsigned int') to parameter of type 'const void *' [-Wint-conversion]
                                  PTR_ERR(key));
                                          ^~~
   include/linux/printk.h:390:33: note: expanded from macro 'pr_err'
           printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
                                          ^~~~~~~~~~~
   include/linux/err.h:29:61: note: passing argument to parameter 'ptr' here
   static inline long __must_check PTR_ERR(__force const void *ptr)
                                                               ^
>> certs/common.c:46:26: error: member reference base type 'void' is not a structure or union
                                     key_ref_to_ptr(key)->description);
                                     ~~~~~~~~~~~~~~~~~~~^ ~~~~~~~~~~~
   include/linux/printk.h:410:36: note: expanded from macro 'pr_notice'
           printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__)
                                             ^~~~~~~~~~~
   2 warnings and 10 errors generated.


vim +11 certs/common.c

2565ca7f5ec1a9 Eric Snowberg 2021-01-22   6  
2565ca7f5ec1a9 Eric Snowberg 2021-01-22   7  int load_certificate_list(const u8 cert_list[],
2565ca7f5ec1a9 Eric Snowberg 2021-01-22   8  			  const unsigned long list_size,
2565ca7f5ec1a9 Eric Snowberg 2021-01-22   9  			  const struct key *keyring)
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  10  {
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @11  	key_ref_t key;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  12  	const u8 *p, *end;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  13  	size_t plen;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  14  
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  15  	p = cert_list;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  16  	end = p + list_size;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  17  	while (p < end) {
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  18  		/* Each cert begins with an ASN.1 SEQUENCE tag and must be more
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  19  		 * than 256 bytes in size.
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  20  		 */
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  21  		if (end - p < 4)
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  22  			goto dodgy_cert;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  23  		if (p[0] != 0x30 &&
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  24  		    p[1] != 0x82)
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  25  			goto dodgy_cert;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  26  		plen = (p[2] << 8) | p[3];
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  27  		plen += 4;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  28  		if (plen > end - p)
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  29  			goto dodgy_cert;
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  30  
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @31  		key = key_create_or_update(make_key_ref(keyring, 1),
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  32  					   "asymmetric",
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  33  					   NULL,
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  34  					   p,
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  35  					   plen,
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @36  					   ((KEY_POS_ALL & ~KEY_POS_SETATTR) |
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @37  					   KEY_USR_VIEW | KEY_USR_READ),
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @38  					   KEY_ALLOC_NOT_IN_QUOTA |
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @39  					   KEY_ALLOC_BUILT_IN |
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @40  					   KEY_ALLOC_BYPASS_RESTRICTION);
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @41  		if (IS_ERR(key)) {
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  42  			pr_err("Problem loading in-kernel X.509 certificate (%ld)\n",
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  43  			       PTR_ERR(key));
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  44  		} else {
2565ca7f5ec1a9 Eric Snowberg 2021-01-22  45  			pr_notice("Loaded X.509 cert '%s'\n",
2565ca7f5ec1a9 Eric Snowberg 2021-01-22 @46  				  key_ref_to_ptr(key)->description);

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