[kbuild-all] net/dccp/ccids/ccid3.c:474:25: sparse: sparse: incorrect type in assignment (different base types)

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: a90af8f15bdc9449ee2d24e1d73fa3f7e8633f81 commit: d991bb1c8da842a2a0b9dc83b1005e655783f861 include/linux/compiler-gcc.h: sparse can do constant folding of __builtin_bswap*() date: 7 months ago config: mips-randconfig-s032-20211116 (attached as .config) compiler: mipsel-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout d991bb1c8da842a2a0b9dc83b1005e655783f861 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=mips If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) command-line: note: in included file: builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQUIRE redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_SEQ_CST redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_ACQ_REL redefined builtin:0:0: sparse: this was the original definition builtin:1:9: sparse: sparse: preprocessor token __ATOMIC_RELEASE redefined builtin:0:0: sparse: this was the original definition net/dccp/ccids/ccid3.c:474:25: sparse: expected restricted __be32 [usertype] opt_val net/dccp/ccids/ccid3.c:474:25: sparse: got unsigned int [usertype] net/dccp/ccids/ccid3.c:478:39: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned long long [usertype] tx_x_recv @@ got restricted __be32 [usertype] opt_val @@ net/dccp/ccids/ccid3.c:478:39: sparse: expected unsigned long long [usertype] tx_x_recv net/dccp/ccids/ccid3.c:478:39: sparse: got restricted __be32 [usertype] opt_val net/dccp/ccids/ccid3.c:485:64: sparse: sparse: incorrect type in argument 1 (different base types) @@ expected unsigned int [usertype] loss_event_rate @@ got restricted __be32 [usertype] opt_val @@ net/dccp/ccids/ccid3.c:485:64: sparse: expected unsigned int [usertype] loss_event_rate net/dccp/ccids/ccid3.c:485:64: sparse: got restricted __be32 [usertype] opt_val vim +474 net/dccp/ccids/ccid3.c 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 456 4874c131d79695 Gerrit Renker 2010-09-19 457 static int ccid3_hc_tx_parse_options(struct sock *sk, u8 packet_type, 4874c131d79695 Gerrit Renker 2010-09-19 458 u8 option, u8 *optval, u8 optlen) 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 459 { 996ccf49005662 Gerrit Renker 2009-10-05 460 struct ccid3_hc_tx_sock *hc = ccid3_hc_tx_sk(sk); 76fd1e87d9456c Gerrit Renker 2007-10-24 461 __be32 opt_val; 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 462 410e27a49bb98b Gerrit Renker 2008-09-09 463 switch (option) { 37efb03fbd0935 Gerrit Renker 2010-09-14 464 case TFRC_OPT_RECEIVE_RATE: 410e27a49bb98b Gerrit Renker 2008-09-09 465 case TFRC_OPT_LOSS_EVENT_RATE: 4874c131d79695 Gerrit Renker 2010-09-19 466 /* Must be ignored on Data packets, cf. RFC 4342 8.3 and 8.5 */ 4874c131d79695 Gerrit Renker 2010-09-19 467 if (packet_type == DCCP_PKT_DATA) 4874c131d79695 Gerrit Renker 2010-09-19 468 break; 4874c131d79695 Gerrit Renker 2010-09-19 469 if (unlikely(optlen != 4)) { 37efb03fbd0935 Gerrit Renker 2010-09-14 470 DCCP_WARN("%s(%p), invalid len %d for %u\n", 4874c131d79695 Gerrit Renker 2010-09-19 471 dccp_role(sk), sk, optlen, option); 37efb03fbd0935 Gerrit Renker 2010-09-14 472 return -EINVAL; 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 473 } 4874c131d79695 Gerrit Renker 2010-09-19 @474 opt_val = ntohl(get_unaligned((__be32 *)optval)); 37efb03fbd0935 Gerrit Renker 2010-09-14 475 37efb03fbd0935 Gerrit Renker 2010-09-14 476 if (option == TFRC_OPT_RECEIVE_RATE) { 536bb20b45dee3 Gerrit Renker 2010-09-19 477 /* Receive Rate is kept in units of 64 bytes/second */ 536bb20b45dee3 Gerrit Renker 2010-09-19 478 hc->tx_x_recv = opt_val; 536bb20b45dee3 Gerrit Renker 2010-09-19 479 hc->tx_x_recv <<= 6; 536bb20b45dee3 Gerrit Renker 2010-09-19 480 410e27a49bb98b Gerrit Renker 2008-09-09 481 ccid3_pr_debug("%s(%p), RECEIVE_RATE=%u\n", 37efb03fbd0935 Gerrit Renker 2010-09-14 482 dccp_role(sk), sk, opt_val); 37efb03fbd0935 Gerrit Renker 2010-09-14 483 } else { 536bb20b45dee3 Gerrit Renker 2010-09-19 484 /* Update the fixpoint Loss Event Rate fraction */ 536bb20b45dee3 Gerrit Renker 2010-09-19 485 hc->tx_p = tfrc_invert_loss_event_rate(opt_val); 536bb20b45dee3 Gerrit Renker 2010-09-19 486 37efb03fbd0935 Gerrit Renker 2010-09-14 487 ccid3_pr_debug("%s(%p), LOSS_EVENT_RATE=%u\n", 37efb03fbd0935 Gerrit Renker 2010-09-14 488 dccp_role(sk), sk, opt_val); 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 489 } 410e27a49bb98b Gerrit Renker 2008-09-09 490 } 37efb03fbd0935 Gerrit Renker 2010-09-14 491 return 0; 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 492 } 7c657876b63cb1 Arnaldo Carvalho de Melo 2005-08-09 493 :::::: The code at line 474 was first introduced by commit :::::: 4874c131d79695e3d372042781a408a1a8a762d8 dccp: Add packet type information to CCID-specific option parsing :::::: TO: Gerrit Renker <gerrit(a)erg.abdn.ac.uk&gt; :::::: CC: Gerrit Renker <gerrit(a)erg.abdn.ac.uk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org