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Message-ID: <202212170647.sPinPZUF-lkp@intel.com>
Date: Sat, 17 Dec 2022 07:06:44 +0800
From: kernel test robot <lkp@...el.com>
To: Ming Lei <ming.lei@...hat.com>, Jens Axboe <axboe@...nel.dk>,
Tejun Heo <tj@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
Zhong Jinghua <zhongjinghua@...wei.com>,
Yu Kuai <yukuai3@...wei.com>, Dennis Zhou <dennis@...nel.org>,
Ming Lei <ming.lei@...hat.com>
Subject: Re: [PATCH 3/3] lib/percpu-refcount: drain ->release() in
perpcu_ref_exit()
Hi Ming,
I love your patch! Yet something to improve:
[auto build test ERROR on dennis-percpu/for-next]
[also build test ERROR on linus/master v6.1 next-20221216]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Ming-Lei/lib-percpu-refcount-fix-use-after-free-by-late-release/20221214-105440
base: https://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu.git for-next
patch link: https://lore.kernel.org/r/20221214025101.1268437-4-ming.lei%40redhat.com
patch subject: [PATCH 3/3] lib/percpu-refcount: drain ->release() in perpcu_ref_exit()
config: s390-buildonly-randconfig-r006-20221215
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 98b13979fb05f3ed288a900deb843e7b27589e58)
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
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/intel-lab-lkp/linux/commit/29f8a1f1e11734bdaf885ad8e9bcd614c2087fc0
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Ming-Lei/lib-percpu-refcount-fix-use-after-free-by-late-release/20221214-105440
git checkout 29f8a1f1e11734bdaf885ad8e9bcd614c2087fc0
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> lib/percpu-refcount.c:499:47: error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes]
wait_queue_head_t *percpu_ref_get_switch_waitq()
^
void
1 error generated.
vim +499 lib/percpu-refcount.c
498
> 499 wait_queue_head_t *percpu_ref_get_switch_waitq()
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config" of type "text/plain" (64241 bytes)
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