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Date: Thu, 24 Feb 2022 23:30:25 +0800
From: kernel test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: kbuild-all@...ts.01.org,
GNU/Weeb Mailing List <gwml@...r.gnuweeb.org>,
linux-kernel@...r.kernel.org, Todd Kjos <tkjos@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Linux Memory Management List <linux-mm@...ck.org>,
Yee Lee <yee.lee@...iatek.com>
Subject: [ammarfaizi2-block:google/android/kernel/common/android12-kiwi-5.10
8861/9999] kernel/kcov.c:296:14: warning: conflicting types for built-in
function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned
int, void *)'
tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-kiwi-5.10
head: b0f8b9f7d23884213c86f388be625777f61fb769
commit: c2985e13ddc87258e98fad13e435129a210092b6 [8861/9999] UPSTREAM: ubsan: enable for all*config builds
config: powerpc-allmodconfig (https://download.01.org/0day-ci/archive/20220224/202202242354.7zL85dQI-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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
# https://github.com/ammarfaizi2/linux-block/commit/c2985e13ddc87258e98fad13e435129a210092b6
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-kiwi-5.10
git checkout c2985e13ddc87258e98fad13e435129a210092b6
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> kernel/kcov.c:296:14: warning: conflicting types for built-in function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned int, void *)' [-Wbuiltin-declaration-mismatch]
296 | void notrace __sanitizer_cov_trace_switch(u64 val, u64 *cases)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from include/linux/kernel.h:8,
from include/asm-generic/bug.h:20,
from arch/powerpc/include/asm/bug.h:109,
from include/linux/bug.h:5,
from arch/powerpc/include/asm/cmpxchg.h:8,
from arch/powerpc/include/asm/atomic.h:11,
from include/linux/atomic.h:7,
from kernel/kcov.c:5:
kernel/kcov.c:322:15: warning: conflicting types for built-in function '__sanitizer_cov_trace_switch'; expected 'void(long long unsigned int, void *)' [-Wbuiltin-declaration-mismatch]
322 | EXPORT_SYMBOL(__sanitizer_cov_trace_switch);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/export.h:125:28: note: in definition of macro '___EXPORT_SYMBOL'
125 | extern typeof(sym) sym; \
| ^~~
include/linux/export.h:187:41: note: in expansion of macro '__EXPORT_SYMBOL'
187 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
| ^~~~~~~~~~~~~~~
include/linux/export.h:190:41: note: in expansion of macro '_EXPORT_SYMBOL'
190 | #define EXPORT_SYMBOL(sym) _EXPORT_SYMBOL(sym, "")
| ^~~~~~~~~~~~~~
kernel/kcov.c:322:1: note: in expansion of macro 'EXPORT_SYMBOL'
322 | EXPORT_SYMBOL(__sanitizer_cov_trace_switch);
| ^~~~~~~~~~~~~
vim +296 kernel/kcov.c
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 295
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 @296 void notrace __sanitizer_cov_trace_switch(u64 val, u64 *cases)
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 297 {
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 298 u64 i;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 299 u64 count = cases[0];
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 300 u64 size = cases[1];
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 301 u64 type = KCOV_CMP_CONST;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 302
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 303 switch (size) {
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 304 case 8:
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 305 type |= KCOV_CMP_SIZE(0);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 306 break;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 307 case 16:
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 308 type |= KCOV_CMP_SIZE(1);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 309 break;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 310 case 32:
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 311 type |= KCOV_CMP_SIZE(2);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 312 break;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 313 case 64:
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 314 type |= KCOV_CMP_SIZE(3);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 315 break;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 316 default:
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 317 return;
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 318 }
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 319 for (i = 0; i < count; i++)
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 320 write_comp_data(type, cases[i + 2], val, _RET_IP_);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 321 }
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 322 EXPORT_SYMBOL(__sanitizer_cov_trace_switch);
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 323 #endif /* ifdef CONFIG_KCOV_ENABLE_COMPARISONS */
ded97d2c2b2c5f Victor Chibotaru 2017-11-17 324
:::::: The code at line 296 was first introduced by commit
:::::: ded97d2c2b2c5f1dcced0bc57133f7753b037dfc kcov: support comparison operands collection
:::::: TO: Victor Chibotaru <tchibo@...gle.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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