diff --git a/arch/arm/arm/src/los_exc.c b/arch/arm/arm/src/los_exc.c
index d8c67f5b0c9eae215e9763d9c2ce9799f7a6b225..9bf61daca936ea44d1f5a416914b7aacab97ee64 100644
--- a/arch/arm/arm/src/los_exc.c
+++ b/arch/arm/arm/src/los_exc.c
@@ -1053,10 +1053,12 @@ STATIC VOID OsCheckAllCpuStatus(VOID)
         g_currHandleExcCpuID = currCpuID;
         g_currHandleExcPID = OsCurrProcessGet()->processID;
         LOS_SpinUnlock(&g_excSerializerSpin);
+#ifndef LOSCFG_SAVE_EXCINFO
         if (g_excFromUserMode[currCpuID] == FALSE) {
             target = (UINT32)(OS_MP_CPU_ALL & ~CPUID_TO_AFFI_MASK(currCpuID));
             HalIrqSendIpi(target, LOS_MP_IPI_HALT);
         }
+#endif
     } else if (g_excFromUserMode[currCpuID] == TRUE) {
         /* Both cores raise exceptions, and the current core is a user-mode exception.
          * Both cores are abnormal and come from the same process
@@ -1081,11 +1083,12 @@ STATIC VOID OsCheckAllCpuStatus(VOID)
             while (1) {}
         }
     }
-
+#ifndef LOSCFG_SAVE_EXCINFO
     /* use halt ipi to stop other active cores */
     if (g_excFromUserMode[ArchCurrCpuid()] == FALSE) {
         WaitAllCpuStop(currCpuID);
     }
+#endif
 }
 #endif
 
diff --git a/kernel/common/los_excinfo.c b/kernel/common/los_excinfo.c
index 7bf0123613a06a852df4a5e0b6c09f73d558e237..fbcf4f42acda214b4331cf4e48fbd0ddcf91f460 100644
--- a/kernel/common/los_excinfo.c
+++ b/kernel/common/los_excinfo.c
@@ -170,16 +170,17 @@ VOID OsRecordExcInfoTime(VOID)
 #ifdef LOSCFG_SHELL
 INT32 OsShellCmdReadExcInfo(INT32 argc, CHAR **argv)
 {
+#define EXCINFO_ALIGN_SIZE 64
     UINT32 recordSpace = GetRecordSpace();
 
     (VOID)argc;
     (VOID)argv;
 
-    CHAR *buf = (CHAR*)LOS_MemAlloc((void *)OS_SYS_MEM_ADDR, recordSpace + 1);
+    CHAR *buf = (CHAR *)LOS_MemAllocAlign((VOID *)OS_SYS_MEM_ADDR, recordSpace + 1, EXCINFO_ALIGN_SIZE);
     if (buf == NULL) {
         return LOS_NOK;
     }
-    (void)memset_s(buf, recordSpace + 1, 0, recordSpace + 1);
+    (VOID)memset_s(buf, recordSpace + 1, 0, recordSpace + 1);
 
     log_read_write_fn hook = GetExcInfoRW();
     if (hook != NULL) {
diff --git a/kernel/common/los_printf.c b/kernel/common/los_printf.c
index fa0d57d2c67d4bb18cccc6c4bbb1ed978d232804..3308a7b8eda187f90d55492c7294dd2c85a052ae 100644
--- a/kernel/common/los_printf.c
+++ b/kernel/common/los_printf.c
@@ -202,12 +202,22 @@ __attribute__ ((noinline)) VOID dprintf(const CHAR *fmt, ...)
     va_list ap;
     va_start(ap, fmt);
     OsVprintf(fmt, ap, CONSOLE_OUTPUT);
+#ifdef LOSCFG_SAVE_EXCINFO
+    if (OsGetSystemStatus() == OS_SYSTEM_EXC_CURR_CPU) {
+        WriteExcBufVa(fmt, ap);
+    }
+#endif
     va_end(ap);
 }
 
 VOID LkDprintf(const CHAR *fmt, va_list ap)
 {
     OsVprintf(fmt, ap, CONSOLE_OUTPUT);
+#ifdef LOSCFG_SAVE_EXCINFO
+    if (OsGetSystemStatus() == OS_SYSTEM_EXC_CURR_CPU) {
+        WriteExcBufVa(fmt, ap);
+    }
+#endif
 }
 
 #ifdef LOSCFG_SHELL_DMESG
@@ -273,6 +283,11 @@ VOID LOS_LkPrint(INT32 level, const CHAR *func, INT32 line, const CHAR *fmt, ...
 
     va_start(ap, fmt);
     OsVprintf(fmt, ap, CONSOLE_OUTPUT);
+#ifdef LOSCFG_SAVE_EXCINFO
+    if (OsGetSystemStatus() == OS_SYSTEM_EXC_CURR_CPU) {
+        WriteExcBufVa(fmt, ap);
+    }
+#endif
     va_end(ap);
 }
 #endif