Hi qiwu.chen, kernel test robot noticed the following build errors: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on brauner-vfs/vfs.all akpm-mm/mm-everything linus/master v6.11 next-20240924] [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/qiwu-chen/arm64-show-signal-info-for-global-init/20240924-154508 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20240924074341.37272-1-qiwu.chen%40transsion.com patch subject: [PATCH v4 1/2] panic: add option to dump task maps info in panic_print config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20240924/202409242208.SqjERCDw-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240924/202409242208.SqjERCDw-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202409242208.SqjERCDw-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from kernel/panic.c:15: In file included from include/linux/kgdb.h:19: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:13: In file included from include/linux/kallsyms.h:13: In file included from include/linux/mm.h:2232: include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> kernel/panic.c:235:3: error: call to undeclared function 'get_vma_name'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 235 | get_vma_name(vma, &path, &name, &name_fmt); | ^ 1 warning and 1 error generated. vim +/get_vma_name +235 kernel/panic.c 210 211 /* 212 * This function is called in panic proccess if the PANIC_PRINT_TASK_MAPS_INFO 213 * flag is specified in panic_print, which is helpful to debug panic issues due 214 * to an unhandled falut in user mode such as kill init. 215 */ 216 static void dump_task_maps_info(struct task_struct *tsk) 217 { 218 struct pt_regs *user_ret = task_pt_regs(tsk); 219 struct mm_struct *mm = tsk->mm; 220 struct vm_area_struct *vma; 221 222 if (!mm || !user_mode(user_ret)) 223 return; 224 225 pr_info("Dump task %s:%d maps start\n", tsk->comm, task_pid_nr(tsk)); 226 mmap_read_lock(mm); 227 VMA_ITERATOR(vmi, mm, 0); 228 for_each_vma(vmi, vma) { 229 int flags = vma->vm_flags; 230 unsigned long long pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT; 231 const struct path *path; 232 const char *name_fmt, *name; 233 char name_buf[SZ_256]; 234 > 235 get_vma_name(vma, &path, &name, &name_fmt); 236 if (path) { 237 name = d_path(path, name_buf, sizeof(name_buf)); 238 name = IS_ERR(name) ? "?" : name; 239 } else if (name || name_fmt) { 240 snprintf(name_buf, sizeof(name_buf), name_fmt ?: "%s", name); 241 name = name_buf; 242 } 243 244 if (name) 245 pr_info("%08lx-%08lx %c%c%c%c %08llx %s\n", 246 vma->vm_start, vma->vm_end, 247 flags & VM_READ ? 'r' : '-', 248 flags & VM_WRITE ? 'w' : '-', 249 flags & VM_EXEC ? 'x' : '-', 250 flags & VM_MAYSHARE ? 's' : 'p', 251 pgoff, name); 252 253 } 254 mmap_read_unlock(mm); 255 pr_info("Dump task %s:%d maps end\n", tsk->comm, task_pid_nr(tsk)); 256 } 257 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
