From: kernel test robot <lkp@intel.com>
To: Yury Norov <yury.norov@gmail.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: [norov:bitmap 45/47] include/linux/bitmap.h:259:9: warning: 'memcpy' forming offset [20, 23] is out of the bounds [0, 20]
Date: Mon, 18 Apr 2022 18:44:23 +0800 [thread overview]
Message-ID: <202204181840.J2i3sYYd-lkp@intel.com> (raw)
tree: https://github.com/norov/linux bitmap
head: 45a9e3feb171ccf077979b7ff6a0c6a732cfc17b
commit: 1a21df17d726b4f3c19a148e10d09ec632603f1c [45/47] lib: add bitmap_{from,to}_arr64
config: arm-randconfig-c002-20220418 (https://download.01.org/0day-ci/archive/20220418/202204181840.J2i3sYYd-lkp@intel.com/config)
compiler: arm-linux-gnueabi-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/norov/linux/commit/1a21df17d726b4f3c19a148e10d09ec632603f1c
git remote add norov https://github.com/norov/linux
git fetch --no-tags norov bitmap
git checkout 1a21df17d726b4f3c19a148e10d09ec632603f1c
# 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=arm SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/mutex.h:17,
from include/linux/rfkill.h:35,
from net/bluetooth/hci_core.c:29:
include/linux/bitmap.h: In function 'bitmap_from_u64':
include/linux/bitmap.h:305:25: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
305 | (const unsigned long *) (buf), (nbits))
| ^
include/linux/bitmap.h:615:16: note: in expansion of macro 'bitmap_from_arr64'
615 | return bitmap_from_arr64(dst, mask, 64);
| ^~~~~~~~~~~~~~~~~
In file included from include/linux/cpumask.h:12,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/mutex.h:17,
from include/linux/rfkill.h:35,
from net/bluetooth/hci_core.c:29:
In function 'bitmap_copy',
inlined from 'bitmap_copy_clear_tail' at include/linux/bitmap.h:268:2,
inlined from 'bitmap_from_u64' at include/linux/bitmap.h:615:9,
inlined from 'hci_bdaddr_list_add_with_flags' at net/bluetooth/hci_core.c:2156:2:
>> include/linux/bitmap.h:259:9: warning: 'memcpy' forming offset [20, 23] is out of the bounds [0, 20] [-Warray-bounds]
259 | memcpy(dst, src, len);
| ^~~~~~~~~~~~~~~~~~~~~
vim +/memcpy +259 include/linux/bitmap.h
^1da177e4c3f41 Linus Torvalds 2005-04-16 254
^1da177e4c3f41 Linus Torvalds 2005-04-16 255 static inline void bitmap_copy(unsigned long *dst, const unsigned long *src,
8b4daad52fee77 Rasmus Villemoes 2015-02-12 256 unsigned int nbits)
^1da177e4c3f41 Linus Torvalds 2005-04-16 257 {
8b4daad52fee77 Rasmus Villemoes 2015-02-12 258 unsigned int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long);
^1da177e4c3f41 Linus Torvalds 2005-04-16 @259 memcpy(dst, src, len);
^1da177e4c3f41 Linus Torvalds 2005-04-16 260 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 261
:::::: The code at line 259 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:[~2022-04-18 10:45 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202204181840.J2i3sYYd-lkp@intel.com \
--to=lkp@intel.com \
--cc=kbuild-all@lists.01.org \
--cc=linux-kernel@vger.kernel.org \
--cc=yury.norov@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.