tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2020.06.02a head: 5216948905dd07a84cef8a7dc72c2ec076802efd commit: 7d16add62717136b1839f0b3d7ea4cbb98f38c2a [67/90] rcuperf: Fix kfree_mult to match printk() format config: arm-randconfig-r004-20200605 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 6dd738e2f0609f7d3313b574a1d471263d2d3ba1) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git checkout 7d16add62717136b1839f0b3d7ea4cbb98f38c2a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <l...@intel.com> All warnings (new ones prefixed by >>, old ones prefixed by <<): >> kernel/rcu/rcuperf.c:727:38: warning: format specifies type 'size_t' (aka >> 'unsigned int') but the argument has type 'unsigned long' [-Wformat] pr_alert("kfree object size=%zun", kfree_mult * sizeof(struct kfree_obj)); ~~~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ %lu include/linux/printk.h:295:35: note: expanded from macro 'pr_alert' printk(KERN_ALERT pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ 1 warning generated. vim +727 kernel/rcu/rcuperf.c e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 709) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 710) static int __init e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 711) kfree_perf_init(void) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 712) { e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 713) long i; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 714) int firsterr = 0; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 715) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 716) kfree_nrealthreads = compute_real(kfree_nthreads); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 717) /* Start up the kthreads. */ e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 718) if (shutdown) { e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 719) init_waitqueue_head(&shutdown_wq); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 720) firsterr = torture_create_kthread(kfree_perf_shutdown, NULL, e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 721) shutdown_task); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 722) if (firsterr) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 723) goto unwind; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 724) schedule_timeout_uninterruptible(1); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 725) } e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 726) b3e2d20973db3e Kefeng Wang 2020-04-17 @727 pr_alert("kfree object size=%zu\n", kfree_mult * sizeof(struct kfree_obj)); f87dc808009ac8 Joel Fernandes (Google 2020-03-16 728) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 729) kfree_reader_tasks = kcalloc(kfree_nrealthreads, sizeof(kfree_reader_tasks[0]), e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 730) GFP_KERNEL); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 731) if (kfree_reader_tasks == NULL) { e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 732) firsterr = -ENOMEM; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 733) goto unwind; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 734) } e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 735) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 736) for (i = 0; i < kfree_nrealthreads; i++) { e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 737) firsterr = torture_create_kthread(kfree_perf_thread, (void *)i, e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 738) kfree_reader_tasks[i]); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 739) if (firsterr) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 740) goto unwind; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 741) } e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 742) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 743) while (atomic_read(&n_kfree_perf_thread_started) < kfree_nrealthreads) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 744) schedule_timeout_uninterruptible(1); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 745) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 746) torture_init_end(); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 747) return 0; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 748) e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 749) unwind: e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 750) torture_init_end(); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 751) kfree_perf_cleanup(); e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 752) return firsterr; e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 753) } e6e78b004fa7e0 Joel Fernandes (Google 2019-08-30 754) :::::: The code at line 727 was first introduced by commit :::::: b3e2d20973db3ec87a6dd2fee0c88d3c2e7c2f61 rcuperf: Fix printk format warning :::::: TO: Kefeng Wang <wangkefeng.w...@huawei.com> :::::: CC: Paul E. McKenney <paul...@kernel.org> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
.config.gz
Description: application/gzip