tree: git://git.samba.org/sfrench/cifs-2.6.git for-next head: 40dad7597b6bdbadb33434f1a667c43d6869a66d commit: f3ce4fce27131ebec2c123ee6c2a4aee477f4b38 [8/9] smb3: add minor debug statement config: x86_64-randconfig-r006-20210715 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu git remote add cifs git://git.samba.org/sfrench/cifs-2.6.git git fetch --no-tags cifs for-next git checkout f3ce4fce27131ebec2c123ee6c2a4aee477f4b38 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): __func__, chan_index); ^~~~~~~~~~ fs/cifs/cifs_debug.h:79:43: note: expanded from macro 'cifs_dbg' cifs_dbg_func(ratelimited, type, fmt, ##__VA_ARGS__); \ ^~~~~~~~~~~ fs/cifs/cifs_debug.h:66:23: note: expanded from macro 'cifs_dbg_func' __FILE__, ##__VA_ARGS__); \ ^~~~~~~~~~~ include/linux/printk.h:584:50: note: expanded from macro 'pr_debug_ratelimited' __dynamic_pr_debug(&descriptor, pr_fmt(fmt), ##__VA_ARGS__); \ ^~~~~~~~~~~ fs/cifs/smb2transport.c:401:25: note: initialize the variable 'chan_index' to silence this warning unsigned int chan_index; ^ = 0 1 warning generated. vim +/chan_index +419 fs/cifs/smb2transport.c 392 393 static int 394 generate_smb3signingkey(struct cifs_ses *ses, 395 const struct derivation_triplet *ptriplet) 396 { 397 int rc; 398 #ifdef CONFIG_CIFS_DEBUG_DUMP_KEYS 399 struct TCP_Server_Info *server = ses->server; 400 #endif 401 unsigned int chan_index; 402 403 /* 404 * All channels use the same encryption/decryption keys but 405 * they have their own signing key. 406 * 407 * When we generate the keys, check if it is for a new channel 408 * (binding) in which case we only need to generate a signing 409 * key and store it in the channel as to not overwrite the 410 * master connection signing key stored in the session 411 */ 412 413 if (ses->binding) { 414 rc = generate_key(ses, ptriplet->signing.label, 415 ptriplet->signing.context, 416 cifs_ses_binding_channel(ses)->signkey, 417 SMB3_SIGN_KEY_SIZE); 418 cifs_dbg(FYI, "%s: Generated key for chan %u\n", 420 if (rc) 421 return rc; 422 } else { 423 rc = generate_key(ses, ptriplet->signing.label, 424 ptriplet->signing.context, 425 ses->smb3signingkey, 426 SMB3_SIGN_KEY_SIZE); 427 if (rc) 428 return rc; 429 430 memcpy(ses->chans[0].signkey, ses->smb3signingkey, 431 SMB3_SIGN_KEY_SIZE); 432 433 rc = generate_key(ses, ptriplet->encryption.label, 434 ptriplet->encryption.context, 435 ses->smb3encryptionkey, 436 SMB3_ENC_DEC_KEY_SIZE); 437 rc = generate_key(ses, ptriplet->decryption.label, 438 ptriplet->decryption.context, 439 ses->smb3decryptionkey, 440 SMB3_ENC_DEC_KEY_SIZE); 441 if (rc) 442 return rc; 443 } 444 445 if (rc) 446 return rc; 447 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org