tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: 735f0ab7121a98dd501241bd147c5c95e6e0b38c commit: 5e3e94b1477ca3f6cb47ae8137a4a99fe0ef6147 [2392/9806] arm64: Add non nmi ipi backtrace support config: arm64-randconfig-002-20240601 (https://download.01.org/0day-ci/archive/20240601/202406010224.zmFA3hCw-lkp@i...) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project bafda89a0944d947fc4b3b5663185e07a397ac30) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240601/202406010224.zmFA3hCw-lkp@i...)

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@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202406010224.zmFA3hCw-lkp@intel.com/

All errors (new ones prefixed by >>):

In file included from arch/arm64/kernel/ipi_nmi.c:11: 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:2181: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~

...

arch/arm64/kernel/ipi_nmi.c:39:2: error: call to undeclared function '__printk_safe_enter'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

39 | __printk_safe_enter(); | ^

...

arch/arm64/kernel/ipi_nmi.c:41:2: error: call to undeclared function '__printk_safe_exit'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

41 | __printk_safe_exit(); | ^ 1 warning and 2 errors generated.

vim +/__printk_safe_enter +39 arch/arm64/kernel/ipi_nmi.c

35 36 #ifdef CONFIG_NON_NMI_IPI_BACKTRACE 37 static void ipi_cpu_backtrace(void *info) 38 {

39 __printk_safe_enter();

40 nmi_cpu_backtrace(get_irq_regs());

41 __printk_safe_exit();

42 } 43