[PATCH v4] arm64: sdei: abort running SDEI handlers during crash

[kernel test robot]

Hi Scott,

kernel test robot noticed the following build errors:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on arm/for-next arm/fixes kvmarm/next soc/for-next linus/master v6.4 next-20230623]
[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/D-Scott-Phillips/arm64-sdei-abort-running-SDEI-handlers-during-crash/20230626-074210
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core
patch link:    https://lore.kernel.org/r/20230625234033.672594-1-scott%40os.amperecomputing.com
patch subject: [PATCH v4] arm64: sdei: abort running SDEI handlers during crash
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20230626/202306260925.6Qm42hTs-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230626/202306260925.6Qm42hTs-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306260925.6Qm42hTs-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/arm64/kernel/smp.c: In function 'crash_smp_send_stop':
>> arch/arm64/kernel/smp.c:1073:9: error: implicit declaration of function 'sdei_handler_abort'; did you mean 'acpi_handle_alert'? [-Werror=implicit-function-declaration]
    1073 |         sdei_handler_abort();
         |         ^~~~~~~~~~~~~~~~~~
         |         acpi_handle_alert
   cc1: some warnings being treated as errors


vim +1073 arch/arm64/kernel/smp.c

  1030	
  1031	#ifdef CONFIG_KEXEC_CORE
  1032	void crash_smp_send_stop(void)
  1033	{
  1034		static int cpus_stopped;
  1035		cpumask_t mask;
  1036		unsigned long timeout;
  1037	
  1038		/*
  1039		 * This function can be called twice in panic path, but obviously
  1040		 * we execute this only once.
  1041		 */
  1042		if (cpus_stopped)
  1043			return;
  1044	
  1045		cpus_stopped = 1;
  1046	
  1047		/*
  1048		 * If this cpu is the only one alive at this point in time, online or
  1049		 * not, there are no stop messages to be sent around, so just back out.
  1050		 */
  1051		if (num_other_online_cpus() == 0)
  1052			goto skip_ipi;
  1053	
  1054		cpumask_copy(&mask, cpu_online_mask);
  1055		cpumask_clear_cpu(smp_processor_id(), &mask);
  1056	
  1057		atomic_set(&waiting_for_crash_ipi, num_other_online_cpus());
  1058	
  1059		pr_crit("SMP: stopping secondary CPUs\n");
  1060		smp_cross_call(&mask, IPI_CPU_CRASH_STOP);
  1061	
  1062		/* Wait up to one second for other CPUs to stop */
  1063		timeout = USEC_PER_SEC;
  1064		while ((atomic_read(&waiting_for_crash_ipi) > 0) && timeout--)
  1065			udelay(1);
  1066	
  1067		if (atomic_read(&waiting_for_crash_ipi) > 0)
  1068			pr_warn("SMP: failed to stop secondary CPUs %*pbl\n",
  1069				cpumask_pr_args(&mask));
  1070	
  1071	skip_ipi:
  1072		sdei_mask_local_cpu();
> 1073		sdei_handler_abort();
  1074	}
  1075	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki