Messages in this thread | | | Date | Fri, 14 Jan 2022 06:13:37 +0800 | From | kernel test robot <> | Subject | arch/powerpc/kernel/stacktrace.c:171:9: error: implicit declaration of function 'nmi_cpu_backtrace' |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fb3b0673b7d5b477ed104949450cd511337ba3c6 commit: 1614b2b11fab29dd4ff31ebba9d266961f5af69e arch: Make ARCH_STACKWALK independent of STACKTRACE date: 5 weeks ago config: powerpc64-randconfig-r025-20220113 (https://download.01.org/0day-ci/archive/20220114/202201140631.ZuSwa9QF-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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/torvalds/linux.git/commit/?id=1614b2b11fab29dd4ff31ebba9d266961f5af69e git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 1614b2b11fab29dd4ff31ebba9d266961f5af69e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/powerpc/kernel/stacktrace.c: In function 'handle_backtrace_ipi': >> arch/powerpc/kernel/stacktrace.c:171:9: error: implicit declaration of function 'nmi_cpu_backtrace' [-Werror=implicit-function-declaration] 171 | nmi_cpu_backtrace(regs); | ^~~~~~~~~~~~~~~~~ arch/powerpc/kernel/stacktrace.c: At top level: arch/powerpc/kernel/stacktrace.c:224:6: warning: no previous prototype for 'arch_trigger_cpumask_backtrace' [-Wmissing-prototypes] 224 | void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/kernel/stacktrace.c: In function 'arch_trigger_cpumask_backtrace': >> arch/powerpc/kernel/stacktrace.c:226:9: error: implicit declaration of function 'nmi_trigger_cpumask_backtrace'; did you mean 'arch_trigger_cpumask_backtrace'? [-Werror=implicit-function-declaration] 226 | nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | arch_trigger_cpumask_backtrace cc1: some warnings being treated as errors
vim +/nmi_cpu_backtrace +171 arch/powerpc/kernel/stacktrace.c
018cce33c5e62d Christophe Leroy 2019-01-31 167 e08ecba17b72ae Michael Ellerman 2018-06-19 168 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_NMI_IPI) 5cc05910f26e6f Michael Ellerman 2018-05-02 169 static void handle_backtrace_ipi(struct pt_regs *regs) 5cc05910f26e6f Michael Ellerman 2018-05-02 170 { 5cc05910f26e6f Michael Ellerman 2018-05-02 @171 nmi_cpu_backtrace(regs); 5cc05910f26e6f Michael Ellerman 2018-05-02 172 } 5cc05910f26e6f Michael Ellerman 2018-05-02 173 5cc05910f26e6f Michael Ellerman 2018-05-02 174 static void raise_backtrace_ipi(cpumask_t *mask) 5cc05910f26e6f Michael Ellerman 2018-05-02 175 { 7c6986ade69e3c Michael Ellerman 2021-06-25 176 struct paca_struct *p; 5cc05910f26e6f Michael Ellerman 2018-05-02 177 unsigned int cpu; 7c6986ade69e3c Michael Ellerman 2021-06-25 178 u64 delay_us; 5cc05910f26e6f Michael Ellerman 2018-05-02 179 5cc05910f26e6f Michael Ellerman 2018-05-02 180 for_each_cpu(cpu, mask) { 7c6986ade69e3c Michael Ellerman 2021-06-25 181 if (cpu == smp_processor_id()) { 5cc05910f26e6f Michael Ellerman 2018-05-02 182 handle_backtrace_ipi(NULL); 7c6986ade69e3c Michael Ellerman 2021-06-25 183 continue; 5cc05910f26e6f Michael Ellerman 2018-05-02 184 } 5cc05910f26e6f Michael Ellerman 2018-05-02 185 7c6986ade69e3c Michael Ellerman 2021-06-25 186 delay_us = 5 * USEC_PER_SEC; 7c6986ade69e3c Michael Ellerman 2021-06-25 187 7c6986ade69e3c Michael Ellerman 2021-06-25 188 if (smp_send_safe_nmi_ipi(cpu, handle_backtrace_ipi, delay_us)) { 7c6986ade69e3c Michael Ellerman 2021-06-25 189 // Now wait up to 5s for the other CPU to do its backtrace 7c6986ade69e3c Michael Ellerman 2021-06-25 190 while (cpumask_test_cpu(cpu, mask) && delay_us) { 7c6986ade69e3c Michael Ellerman 2021-06-25 191 udelay(1); 7c6986ade69e3c Michael Ellerman 2021-06-25 192 delay_us--; 7c6986ade69e3c Michael Ellerman 2021-06-25 193 } 7c6986ade69e3c Michael Ellerman 2021-06-25 194 7c6986ade69e3c Michael Ellerman 2021-06-25 195 // Other CPU cleared itself from the mask 7c6986ade69e3c Michael Ellerman 2021-06-25 196 if (delay_us) 7c6986ade69e3c Michael Ellerman 2021-06-25 197 continue; 7c6986ade69e3c Michael Ellerman 2021-06-25 198 } 7c6986ade69e3c Michael Ellerman 2021-06-25 199 7c6986ade69e3c Michael Ellerman 2021-06-25 200 p = paca_ptrs[cpu]; 5cc05910f26e6f Michael Ellerman 2018-05-02 201 5cc05910f26e6f Michael Ellerman 2018-05-02 202 cpumask_clear_cpu(cpu, mask); 5cc05910f26e6f Michael Ellerman 2018-05-02 203 5cc05910f26e6f Michael Ellerman 2018-05-02 204 pr_warn("CPU %d didn't respond to backtrace IPI, inspecting paca.\n", cpu); 5cc05910f26e6f Michael Ellerman 2018-05-02 205 if (!virt_addr_valid(p)) { 5cc05910f26e6f Michael Ellerman 2018-05-02 206 pr_warn("paca pointer appears corrupt? (%px)\n", p); 5cc05910f26e6f Michael Ellerman 2018-05-02 207 continue; 5cc05910f26e6f Michael Ellerman 2018-05-02 208 } 5cc05910f26e6f Michael Ellerman 2018-05-02 209 5cc05910f26e6f Michael Ellerman 2018-05-02 210 pr_warn("irq_soft_mask: 0x%02x in_mce: %d in_nmi: %d", 5cc05910f26e6f Michael Ellerman 2018-05-02 211 p->irq_soft_mask, p->in_mce, p->in_nmi); 5cc05910f26e6f Michael Ellerman 2018-05-02 212 5cc05910f26e6f Michael Ellerman 2018-05-02 213 if (virt_addr_valid(p->__current)) 5cc05910f26e6f Michael Ellerman 2018-05-02 214 pr_cont(" current: %d (%s)\n", p->__current->pid, 5cc05910f26e6f Michael Ellerman 2018-05-02 215 p->__current->comm); 5cc05910f26e6f Michael Ellerman 2018-05-02 216 else 5cc05910f26e6f Michael Ellerman 2018-05-02 217 pr_cont(" current pointer corrupt? (%px)\n", p->__current); 5cc05910f26e6f Michael Ellerman 2018-05-02 218 5cc05910f26e6f Michael Ellerman 2018-05-02 219 pr_warn("Back trace of paca->saved_r1 (0x%016llx) (possibly stale):\n", p->saved_r1); 9cb8f069deeed7 Dmitry Safonov 2020-06-08 220 show_stack(p->__current, (unsigned long *)p->saved_r1, KERN_WARNING); 5cc05910f26e6f Michael Ellerman 2018-05-02 221 } 5cc05910f26e6f Michael Ellerman 2018-05-02 222 } 5cc05910f26e6f Michael Ellerman 2018-05-02 223 5cc05910f26e6f Michael Ellerman 2018-05-02 224 void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) 5cc05910f26e6f Michael Ellerman 2018-05-02 225 { 5cc05910f26e6f Michael Ellerman 2018-05-02 @226 nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi);
:::::: The code at line 171 was first introduced by commit :::::: 5cc05910f26e6fd6da15f052f86f6150e4b91664 powerpc/64s: Wire up arch_trigger_cpumask_backtrace()
:::::: TO: Michael Ellerman <mpe@ellerman.id.au> :::::: CC: Michael Ellerman <mpe@ellerman.id.au>
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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