security/integrity/ima/ima_kexec.c:113:30: sparse: sparse: incorrect type in assignment (different base types)

security/integrity/ima/ima_kexec.c:113:30: sparse: sparse: incorrect type in assignment (different base types)

[kernel test robot]

Hi Youling,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   e84d960149e71e8d5e4db69775ce31305898ed0c
commit: d162feec6b6e7ed97986118450812fdd7e9ba202 LoongArch: Add preparatory infrastructure for kexec_file
date:   4 months ago
config: loongarch-randconfig-r123-20260118 (https://download.01.org/0day-ci/archive/20260119/202601190517.eFFmHh5X-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260119/202601190517.eFFmHh5X-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601190517.eFFmHh5X-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> security/integrity/ima/ima_kexec.c:113:30: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned short [addressable] [assigned] [usertype] version @@     got restricted __le16 [usertype] @@
   security/integrity/ima/ima_kexec.c:113:30: sparse:     expected unsigned short [addressable] [assigned] [usertype] version
   security/integrity/ima/ima_kexec.c:113:30: sparse:     got restricted __le16 [usertype]
>> security/integrity/ima/ima_kexec.c:114:28: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long [addressable] [assigned] [usertype] count @@     got restricted __le64 [usertype] @@
   security/integrity/ima/ima_kexec.c:114:28: sparse:     expected unsigned long long [addressable] [assigned] [usertype] count
   security/integrity/ima/ima_kexec.c:114:28: sparse:     got restricted __le64 [usertype]
>> security/integrity/ima/ima_kexec.c:115:34: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long long [addressable] [assigned] [usertype] buffer_size @@     got restricted __le64 [usertype] @@
   security/integrity/ima/ima_kexec.c:115:34: sparse:     expected unsigned long long [addressable] [assigned] [usertype] buffer_size
   security/integrity/ima/ima_kexec.c:115:34: sparse:     got restricted __le64 [usertype]

vim +113 security/integrity/ima/ima_kexec.c

c95e1acb6d7f00 Steven Chen     2025-04-21   80  
7b8589cc29e7c3 Mimi Zohar      2016-12-19   81  static int ima_dump_measurement_list(unsigned long *buffer_size, void **buffer,
7b8589cc29e7c3 Mimi Zohar      2016-12-19   82  				     unsigned long segment_size)
7b8589cc29e7c3 Mimi Zohar      2016-12-19   83  {
7b8589cc29e7c3 Mimi Zohar      2016-12-19   84  	struct ima_queue_entry *qe;
d68a6fe9fccfd0 Mimi Zohar      2016-12-19   85  	struct ima_kexec_hdr khdr;
7b8589cc29e7c3 Mimi Zohar      2016-12-19   86  	int ret = 0;
7b8589cc29e7c3 Mimi Zohar      2016-12-19   87  
7b8589cc29e7c3 Mimi Zohar      2016-12-19   88  	/* segment size can't change between kexec load and execute */
cb5052282c65dc Steven Chen     2025-04-21   89  	if (!ima_kexec_file.buf) {
c95e1acb6d7f00 Steven Chen     2025-04-21   90  		pr_err("Kexec file buf not allocated\n");
c95e1acb6d7f00 Steven Chen     2025-04-21   91  		return -EINVAL;
7b8589cc29e7c3 Mimi Zohar      2016-12-19   92  	}
7b8589cc29e7c3 Mimi Zohar      2016-12-19   93  
d68a6fe9fccfd0 Mimi Zohar      2016-12-19   94  	memset(&khdr, 0, sizeof(khdr));
d68a6fe9fccfd0 Mimi Zohar      2016-12-19   95  	khdr.version = 1;
68af44a7197568 Breno Leitao    2024-11-21   96  	/* This is an append-only list, no need to hold the RCU read lock */
68af44a7197568 Breno Leitao    2024-11-21   97  	list_for_each_entry_rcu(qe, &ima_measurements, later, true) {
cb5052282c65dc Steven Chen     2025-04-21   98  		if (ima_kexec_file.count < ima_kexec_file.size) {
7b8589cc29e7c3 Mimi Zohar      2016-12-19   99  			khdr.count++;
cb5052282c65dc Steven Chen     2025-04-21  100  			ima_measurements_show(&ima_kexec_file, qe);
7b8589cc29e7c3 Mimi Zohar      2016-12-19  101  		} else {
7b8589cc29e7c3 Mimi Zohar      2016-12-19  102  			ret = -EINVAL;
7b8589cc29e7c3 Mimi Zohar      2016-12-19  103  			break;
7b8589cc29e7c3 Mimi Zohar      2016-12-19  104  		}
7b8589cc29e7c3 Mimi Zohar      2016-12-19  105  	}
7b8589cc29e7c3 Mimi Zohar      2016-12-19  106  
7b8589cc29e7c3 Mimi Zohar      2016-12-19  107  	/*
7b8589cc29e7c3 Mimi Zohar      2016-12-19  108  	 * fill in reserved space with some buffer details
7b8589cc29e7c3 Mimi Zohar      2016-12-19  109  	 * (eg. version, buffer size, number of measurements)
7b8589cc29e7c3 Mimi Zohar      2016-12-19  110  	 */
cb5052282c65dc Steven Chen     2025-04-21  111  	khdr.buffer_size = ima_kexec_file.count;
d68a6fe9fccfd0 Mimi Zohar      2016-12-19  112  	if (ima_canonical_fmt) {
d68a6fe9fccfd0 Mimi Zohar      2016-12-19 @113  		khdr.version = cpu_to_le16(khdr.version);
d68a6fe9fccfd0 Mimi Zohar      2016-12-19 @114  		khdr.count = cpu_to_le64(khdr.count);
d68a6fe9fccfd0 Mimi Zohar      2016-12-19 @115  		khdr.buffer_size = cpu_to_le64(khdr.buffer_size);
d68a6fe9fccfd0 Mimi Zohar      2016-12-19  116  	}
cb5052282c65dc Steven Chen     2025-04-21  117  	memcpy(ima_kexec_file.buf, &khdr, sizeof(khdr));
d68a6fe9fccfd0 Mimi Zohar      2016-12-19  118  
520451e90cbe9d Bruno Meneguele 2021-12-28  119  	print_hex_dump_debug("ima dump: ", DUMP_PREFIX_NONE, 16, 1,
cb5052282c65dc Steven Chen     2025-04-21  120  			     ima_kexec_file.buf, ima_kexec_file.count < 100 ?
cb5052282c65dc Steven Chen     2025-04-21  121  			     ima_kexec_file.count : 100,
520451e90cbe9d Bruno Meneguele 2021-12-28  122  			     true);
7b8589cc29e7c3 Mimi Zohar      2016-12-19  123  
cb5052282c65dc Steven Chen     2025-04-21  124  	*buffer_size = ima_kexec_file.count;
cb5052282c65dc Steven Chen     2025-04-21  125  	*buffer = ima_kexec_file.buf;
9f0ec4b16f2b41 Steven Chen     2025-04-21  126  
7b8589cc29e7c3 Mimi Zohar      2016-12-19  127  	return ret;
7b8589cc29e7c3 Mimi Zohar      2016-12-19  128  }
7b8589cc29e7c3 Mimi Zohar      2016-12-19  129  

:::::: The code at line 113 was first introduced by commit
:::::: d68a6fe9fccfd00589c61df672b449d66ba3183f ima: define a canonical binary_runtime_measurements list format

:::::: TO: Mimi Zohar <zohar@linux.vnet.ibm.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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