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Date: Tue, 7 Mar 2023 09:37:25 -0800
From: "Paul E. McKenney" <paulmck@kernel.org>
To: kernel test robot <lkp@intel.com>
Cc: oe-kbuild-all@lists.linux.dev, Ammar Faizi <ammarfaizi2@gnuweeb.org>,
GNU/Weeb Mailing List <gwml@vger.gnuweeb.org>
Subject: Re: [ammarfaizi2-block:paulmck/linux-rcu/dev.2023.02.27a 108/108]
kernel/rcu/rcutorture.c:3289: undefined reference to `set_nmi_torture'
Message-ID: <20230307173725.GK1301832@paulmck-ThinkPad-P17-Gen-1>
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References: <202303071217.ajqvt2rz-lkp@intel.com>
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On Tue, Mar 07, 2023 at 01:03:43PM +0800, kernel test robot wrote:
> tree: https://github.com/ammarfaizi2/linux-block paulmck/linux-rcu/dev.2023.02.27a
> head: b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
> commit: b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007 [108/108] rcutorture: Test NMI diagnostics
> config: arm-randconfig-r006-20230305 (https://download.01.org/0day-ci/archive/20230307/202303071217.ajqvt2rz-lkp@intel.com/config)
> compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
> 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/ammarfaizi2/linux-block/commit/b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
> git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
> git fetch --no-tags ammarfaizi2-block paulmck/linux-rcu/dev.2023.02.27a
> git checkout b171cbcbbd8e5f5f2e0638c5b5b5c77e3cc79007
> # save the config file
> mkdir build_dir && cp config build_dir/.config
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash
>
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@intel.com>
> | Link: https://lore.kernel.org/oe-kbuild-all/202303071217.ajqvt2rz-lkp@intel.com/
>
> All errors (new ones prefixed by >>):
>
> arm-linux-gnueabi-ld: kernel/rcu/rcutorture.o: in function `rcutorture_test_nmis':
> >> kernel/rcu/rcutorture.c:3289: undefined reference to `set_nmi_torture'
> >> arm-linux-gnueabi-ld: kernel/rcu/rcutorture.c:3301: undefined reference to `set_nmi_torture'
This was me accidentally putting an x86-only not-for-mainline diagnostic
patch on the -rcu tree's "dev" branch. I reset the "dev" branch to
avoid this.
Thanx, Paul
> vim +3289 kernel/rcu/rcutorture.c
>
> 3281
> 3282 static void rcutorture_test_nmis(int n)
> 3283 {
> 3284 #if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
> 3285 int cpu;
> 3286 int dumpcpu;
> 3287 int i;
> 3288
> > 3289 set_nmi_torture(nmi_delay, nmi_halt1, nmi_halt2, nmi_halt3);
> 3290 for (i = 0; i < n; i++) {
> 3291 preempt_disable();
> 3292 cpu = smp_processor_id();
> 3293 dumpcpu = cpu + 1;
> 3294 if (dumpcpu >= nr_cpu_ids)
> 3295 dumpcpu = 0;
> 3296 pr_alert("%s: CPU %d invoking dump_cpu_task(%d)\n", __func__, cpu, dumpcpu);
> 3297 dump_cpu_task(dumpcpu);
> 3298 preempt_enable();
> 3299 schedule_timeout_uninterruptible(15 * HZ);
> 3300 }
> > 3301 set_nmi_torture(0, false, false, false);
> 3302 #else // #if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
> 3303 WARN_ONCE(n, "Non-zero rcutorture.test_nmis=%d permitted only when rcutorture is built in.\n", test_nmis);
> 3304 #endif // #else // #if IS_BUILTIN(CONFIG_RCU_TORTURE_TEST)
> 3305 }
> 3306
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests