tree:   https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.15
head:   e20b35ec990f7ec925ec64b5edbbb409fb361c7a
commit: bccfd3f6031cdd59b92c4aa0384c9d46262293f9 [99/113] riscv: kexec: Fixup crash_smp_send_stop without multi cores
config: riscv-randconfig-r042-20221204
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 6e4cea55f0d1104408b26ac574566a0e4de48036)
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 riscv cross compiling tool for clang build
        # apt-get install binutils-riscv-linux-gnu
        # https://github.com/ammarfaizi2/linux-block/commit/bccfd3f6031cdd59b92c4aa0384c9d46262293f9
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.15
        git checkout bccfd3f6031cdd59b92c4aa0384c9d46262293f9
        # 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=riscv SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/riscv/kernel/smp.c:195:23: error: use of undeclared identifier 'cpu'
                           ipi_cpu_crash_stop(cpu, get_irq_regs());
                                              ^
>> arch/riscv/kernel/smp.c:217:15: error: use of undeclared identifier 'old_regs'
           set_irq_regs(old_regs);
                        ^
   2 errors generated.


vim +/cpu +195 arch/riscv/kernel/smp.c

   159	
   160	void handle_IPI(struct pt_regs *regs)
   161	{
   162		unsigned long *pending_ipis = &ipi_data[smp_processor_id()].bits;
   163		unsigned long *stats = ipi_data[smp_processor_id()].stats;
   164	
   165		irq_enter();
   166	
   167		riscv_clear_ipi();
   168	
   169		while (true) {
   170			unsigned long ops;
   171	
   172			/* Order bit clearing and data access. */
   173			mb();
   174	
   175			ops = xchg(pending_ipis, 0);
   176			if (ops == 0)
   177				goto done;
   178	
   179			if (ops & (1 << IPI_RESCHEDULE)) {
   180				stats[IPI_RESCHEDULE]++;
   181				scheduler_ipi();
   182			}
   183	
   184			if (ops & (1 << IPI_CALL_FUNC)) {
   185				stats[IPI_CALL_FUNC]++;
   186				generic_smp_call_function_interrupt();
   187			}
   188	
   189			if (ops & (1 << IPI_CPU_STOP)) {
   190				stats[IPI_CPU_STOP]++;
   191				ipi_stop();
   192			}
   193	
   194			if (ops & (1 << IPI_CPU_CRASH_STOP)) {
 > 195				ipi_cpu_crash_stop(cpu, get_irq_regs());
   196			}
   197	
   198			if (ops & (1 << IPI_IRQ_WORK)) {
   199				stats[IPI_IRQ_WORK]++;
   200				irq_work_run();
   201			}
   202	
   203	#ifdef CONFIG_GENERIC_CLOCKEVENTS_BROADCAST
   204			if (ops & (1 << IPI_TIMER)) {
   205				stats[IPI_TIMER]++;
   206				tick_receive_broadcast();
   207			}
   208	#endif
   209			BUG_ON((ops >> IPI_MAX) != 0);
   210	
   211			/* Order data access and bit testing. */
   212			mb();
   213		}
   214	
   215	done:
   216		irq_exit();
 > 217		set_irq_regs(old_regs);
   218	}
   219	

-- 
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