[arm-platforms:kvm-arm64/pkvm-flags 103/103] arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page'

From: kernel test robot <lkp@intel.com>
To: Kalesh Singh <kaleshsingh@google.com>
Cc: kbuild-all@lists.01.org, linux-arm-kernel@lists.infradead.org,
	Marc Zyngier <maz@kernel.org>, Mark Brown <broonie@kernel.org>
Subject: [arm-platforms:kvm-arm64/pkvm-flags 103/103] arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page'
Date: Thu, 23 Jun 2022 02:07:18 +0800	[thread overview]
Message-ID: <202206230254.O6toupCu-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git kvm-arm64/pkvm-flags
head:   04afeb466c4c982055b9d859b85133893d3f97b2
commit: 04afeb466c4c982055b9d859b85133893d3f97b2 [103/103] KVM: arm64: Unwind and dump nVHE hypervisor stacktrace
config: arm64-buildonly-randconfig-r004-20220622 (https://download.01.org/0day-ci/archive/20220623/202206230254.O6toupCu-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
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://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/commit/?id=04afeb466c4c982055b9d859b85133893d3f97b2
        git remote add arm-platforms https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
        git fetch --no-tags arm-platforms kvm-arm64/pkvm-flags
        git checkout 04afeb466c4c982055b9d859b85133893d3f97b2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm64 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 >>):

   aarch64-linux-ld: arch/arm64/kernel/stacktrace.o: in function `hyp_dump_backtrace':
>> arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page'
   aarch64-linux-ld: arch/arm64/kernel/stacktrace.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `kvm_arm_hyp_stacktrace_page' which may bind externally can not be used when making a shared object; recompile with -fPIC
   arch/arm64/kernel/stacktrace.c:254:(.text+0x54c): dangerous relocation: unsupported relocation
>> aarch64-linux-ld: arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page'

vim +254 arch/arm64/kernel/stacktrace.c

   246	
   247	/**
   248	 * Symbolizes and dumps the hypervisor backtrace from the shared
   249	 * stacktrace page.
   250	 */
   251	noinline notrace void hyp_dump_backtrace(unsigned long hyp_offset)
   252	{
   253		unsigned long *stacktrace_pos =
 > 254			(unsigned long *)*this_cpu_ptr(&kvm_arm_hyp_stacktrace_page);
   255		unsigned long va_mask = GENMASK_ULL(vabits_actual - 1, 0);
   256		unsigned long pc = *stacktrace_pos++;
   257	
   258		kvm_err("nVHE HYP call trace:\n");
   259	
   260		while (pc) {
   261			pc &= va_mask;		/* Mask tags */
   262			pc += hyp_offset;	/* Convert to kern addr */
   263			kvm_err("[<%016lx>] %pB\n", pc, (void *)pc);
   264			pc = *stacktrace_pos++;
   265		}
   266	
   267		kvm_err("---- end of nVHE HYP call trace ----\n");
   268	}
   269	#else /* __KVM_NVHE_HYPERVISOR__ */
   270	DEFINE_PER_CPU(unsigned long [PAGE_SIZE/sizeof(long)], overflow_stack)
   271		__aligned(16);
   272	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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