From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: [linux-next:pending-fixes 13358/13464] include/net/bluetooth/bluetooth.h:347:16: warning: 'memcmp' specified bound 6 exceeds source size 0
Date: Wed, 10 Aug 2022 15:50:50 +0800 [thread overview]
Message-ID: <202208101504.NDdUBuGe-lkp@intel.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 3830 bytes --]
::::::
:::::: Manual check reason: "low confidence static check first_new_problem: include/net/bluetooth/bluetooth.h:347:16: warning: 'memcmp' specified bound 6 exceeds source size 0 [-Wstringop-overread]"
::::::
BCC: lkp(a)intel.com
CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git pending-fixes
head: 5c5775c41d5494a213623a99b8ba1a7679efd79f
commit: 332f1795ca202489c665a75e62e18ff6284de077 [13358/13464] Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression
:::::: branch date: 9 hours ago
:::::: commit date: 32 hours ago
config: powerpc-randconfig-s051-20220810 (https://download.01.org/0day-ci/archive/20220810/202208101504.NDdUBuGe-lkp(a)intel.com/config)
compiler: powerpc-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=332f1795ca202489c665a75e62e18ff6284de077
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next pending-fixes
git checkout 332f1795ca202489c665a75e62e18ff6284de077
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash net/bluetooth/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from net/bluetooth/l2cap_core.c:37:
In function 'bacmp',
inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2003:15:
>> include/net/bluetooth/bluetooth.h:347:16: warning: 'memcmp' specified bound 6 exceeds source size 0 [-Wstringop-overread]
347 | return memcmp(ba1, ba2, sizeof(bdaddr_t));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function 'bacmp',
inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2004:15:
>> include/net/bluetooth/bluetooth.h:347:16: warning: 'memcmp' specified bound 6 exceeds source size 0 [-Wstringop-overread]
347 | return memcmp(ba1, ba2, sizeof(bdaddr_t));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/memcmp +347 include/net/bluetooth/bluetooth.h
^1da177e4c3f41 Linus Torvalds 2005-04-16 343
^1da177e4c3f41 Linus Torvalds 2005-04-16 344 /* Copy, swap, convert BD Address */
f53c20e93612f7 David Herrmann 2013-04-06 345 static inline int bacmp(const bdaddr_t *ba1, const bdaddr_t *ba2)
^1da177e4c3f41 Linus Torvalds 2005-04-16 346 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 @347 return memcmp(ba1, ba2, sizeof(bdaddr_t));
^1da177e4c3f41 Linus Torvalds 2005-04-16 348 }
f53c20e93612f7 David Herrmann 2013-04-06 349 static inline void bacpy(bdaddr_t *dst, const bdaddr_t *src)
^1da177e4c3f41 Linus Torvalds 2005-04-16 350 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 351 memcpy(dst, src, sizeof(bdaddr_t));
^1da177e4c3f41 Linus Torvalds 2005-04-16 352 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 353
:::::: The code at line 347 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
reply other threads:[~2022-08-10 7:50 UTC|newest]
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