From: kernel test robot <lkp@intel.com>
To: Trond Myklebust <trond.myklebust@hammerspace.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
Sasha Levin <sashal@kernel.org>,
Meena Shanmugam <meenashanmugam@google.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: [linux-stable-rc:queue/5.10 60/64] arch/arm/include/asm/bitops.h:183:41: warning: this statement may fall through
Date: Tue, 17 May 2022 02:39:43 +0800 [thread overview]
Message-ID: <202205170208.3xcnwB0O-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.10
head: 678760868882a1b8dd7f45e9b6058f2c0ce109a3
commit: 419aeb75528619e8bfedecb70c70abcc72464e71 [60/64] SUNRPC: Don't call connect() more than once on a TCP socket
config: arm-allmodconfig (https://download.01.org/0day-ci/archive/20220517/202205170208.3xcnwB0O-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=419aeb75528619e8bfedecb70c70abcc72464e71
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc queue/5.10
git checkout 419aeb75528619e8bfedecb70c70abcc72464e71
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash net/sunrpc/
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/bitops.h:29,
from include/linux/kernel.h:12,
from include/asm-generic/bug.h:20,
from arch/arm/include/asm/bug.h:60,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/gfp.h:5,
from include/linux/slab.h:15,
from net/sunrpc/xprtsock.c:24:
net/sunrpc/xprtsock.c: In function 'xs_tcp_setup_socket':
>> arch/arm/include/asm/bitops.h:183:41: warning: this statement may fall through [-Wimplicit-fallthrough=]
183 | #define ATOMIC_BITOP(name,nr,p) _##name(nr,p)
| ^~~~~~~~~~~~~
arch/arm/include/asm/bitops.h:189:41: note: in expansion of macro 'ATOMIC_BITOP'
189 | #define set_bit(nr,p) ATOMIC_BITOP(set_bit,nr,p)
| ^~~~~~~~~~~~
net/sunrpc/xprtsock.c:2301:17: note: in expansion of macro 'set_bit'
2301 | set_bit(XPRT_SOCK_CONNECT_SENT, &transport->sock_state);
| ^~~~~~~
net/sunrpc/xprtsock.c:2302:9: note: here
2302 | case -EALREADY:
| ^~~~
vim +183 arch/arm/include/asm/bitops.h
^1da177e4c3f415 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 175
e7ec02938dbe8ca include/asm-arm/bitops.h Russell King 2005-07-28 176 #ifndef CONFIG_SMP
^1da177e4c3f415 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 177 /*
^1da177e4c3f415 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 178 * The __* form of bitops are non-atomic and may be reordered.
^1da177e4c3f415 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 179 */
6323f0ccedf756d arch/arm/include/asm/bitops.h Russell King 2011-01-16 180 #define ATOMIC_BITOP(name,nr,p) \
6323f0ccedf756d arch/arm/include/asm/bitops.h Russell King 2011-01-16 181 (__builtin_constant_p(nr) ? ____atomic_##name(nr, p) : _##name(nr,p))
e7ec02938dbe8ca include/asm-arm/bitops.h Russell King 2005-07-28 182 #else
6323f0ccedf756d arch/arm/include/asm/bitops.h Russell King 2011-01-16 @183 #define ATOMIC_BITOP(name,nr,p) _##name(nr,p)
e7ec02938dbe8ca include/asm-arm/bitops.h Russell King 2005-07-28 184 #endif
^1da177e4c3f415 include/asm-arm/bitops.h Linus Torvalds 2005-04-16 185
:::::: The code at line 183 was first introduced by commit
:::::: 6323f0ccedf756dfe5f46549cec69a2d6d97937b ARM: bitops: switch set/clear/change bitops to use ldrex/strex
:::::: TO: Russell King <rmk+kernel@arm.linux.org.uk>
:::::: CC: Russell King <rmk+kernel@arm.linux.org.uk>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
reply other threads:[~2022-05-16 18:41 UTC|newest]
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