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Message-ID: <202111201912.djLswj1K-lkp@intel.com>
Date: Sat, 20 Nov 2021 19:43:26 +0800
From: kernel test robot <lkp@...el.com>
To: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>
Subject: 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/?id=d991bb1c8da842a2a0b9dc83b1005e655783f861
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@...el.com>
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: sparse: incorrect type in assignment (different base types) @@ expected restricted __be32 [usertype] opt_val @@ got unsigned int [usertype] @@
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@....abdn.ac.uk>
:::::: CC: Gerrit Renker <gerrit@....abdn.ac.uk>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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