[dhowells-fs:afs-testing 35/35] net/rxrpc/rxperf.c:587:undefined reference to `crypto_krb5_find_enctype'

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git afs-testing
head:   6385ba8f265471ebf57f38e2bd2e6a4fabac7424
commit: 6385ba8f265471ebf57f38e2bd2e6a4fabac7424 [35/35] rxrpc: rxperf: Add test RxGK server keys
config: csky-randconfig-002-20250210 (https://download.01.org/0day-ci/archive/20250210/202502101229.Cm30u9yV-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250210/202502101229.Cm30u9yV-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/202502101229.Cm30u9yV-lkp@intel.com/

All errors (new ones prefixed by >>):

   csky-linux-ld: net/rxrpc/rxperf.o: in function `rxperf_add_yfs_rxgk_key':
>> net/rxrpc/rxperf.c:587:(.text.unlikely+0x16): undefined reference to `crypto_krb5_find_enctype'
>> csky-linux-ld: net/rxrpc/rxperf.c:619:(.text.unlikely+0xb4): undefined reference to `crypto_krb5_find_enctype'
   net/ipv4/tcp_ipv4.o: in function `tcp_add_backlog':
   net/ipv4/tcp_ipv4.c:2028:(.text+0x2838): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2063:(.text+0x297a): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2076:(.text+0x29e4): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2106:(.text+0x2ab6): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2108:(.text+0x2ad2): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.o: in function `tcp_checksum_complete':
   include/net/tcp.h:1484:(.text+0x2ae2): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.o: in function `spin_unlock':
   include/linux/spinlock.h:391:(.text+0x2aee): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.o: in function `tcp_add_backlog':
   net/ipv4/tcp_ipv4.c:2009:(.text+0x2822): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2106:(.text+0x2ab2): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'
   net/ipv4/tcp_ipv4.c:2106:(.text+0x2aba): relocation truncated to fit: R_CKCORE_PCREL_IMM16BY4 against `__jump_table'


vim +587 net/rxrpc/rxperf.c

   581	
   582	/*
   583	 * Add a yfs-rxgk key to the security keyring.
   584	 */
   585	static int rxperf_add_yfs_rxgk_key(struct key *keyring, u32 enctype)
   586	{
 > 587		const struct krb5_enctype *krb5 = crypto_krb5_find_enctype(enctype);
   588		key_ref_t kref;
   589		char name[64];
   590		int ret;
   591		u8 key[32];
   592	
   593		if (!krb5 || krb5->key_len > sizeof(key))
   594			return 0;
   595	
   596		/* The key is just { 0, 1, 2, 3, 4, ... } */
   597		for (int i = 0; i < krb5->key_len; i++)
   598			key[i] = i;
   599	
   600		sprintf(name, "%u:6:1:%u", RX_PERF_SERVICE, enctype);
   601	
   602		kref = key_create_or_update(make_key_ref(keyring, true),
   603					    "rxrpc_s", name,
   604					    key, krb5->key_len,
   605					    KEY_POS_VIEW | KEY_POS_READ | KEY_POS_SEARCH |
   606					    KEY_USR_VIEW,
   607					    KEY_ALLOC_NOT_IN_QUOTA);
   608	
   609		if (IS_ERR(kref)) {
   610			pr_err("Can't allocate rxperf server key: %ld\n", PTR_ERR(kref));
   611			return PTR_ERR(kref);
   612		}
   613	
   614		ret = key_link(keyring, key_ref_to_ptr(kref));
   615		if (ret < 0)
   616			pr_err("Can't link rxperf server key: %d\n", ret);
   617		key_ref_put(kref);
   618		return ret;
 > 619	}
   620	

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