From 4d863e985b6372f7895db57b602b662dba5cadd0 Mon Sep 17 00:00:00 2001
From: boxi <lewis.liulei@huawei.com>
Date: Tue, 18 May 2021 17:21:47 +0800
Subject: [PATCH] fix: Fix wrong judgment in los_trace.c to avoid null pointer
 access.

Fix wrong judgment in los_trace.c to avoid null pointer access.

Close #I3RT9F

Change-Id: Id37b80fc6acc085205695318232d5f4fd75472aa
---
 kernel/extended/trace/los_trace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/extended/trace/los_trace.c b/kernel/extended/trace/los_trace.c
index 678025c4..184884e4 100644
--- a/kernel/extended/trace/los_trace.c
+++ b/kernel/extended/trace/los_trace.c
@@ -454,7 +454,7 @@ UINT32 OsShellCmdTraceSwitch(INT32 argc, const CHAR **argv)
         if (isdigit(argv[0][0]) != 0) {
             CHAR *endPtr = NULL;
             UINT32 traceType = strtoul(argv[0], &endPtr, 0);
-            if ((endPtr != NULL) || (*endPtr != 0)) {
+            if ((endPtr == NULL) || (*endPtr != 0)) {
                 PRINTK("Unknown option: %s\n", argv[0]);
                 goto TRACE_HELP;
             }
-- 
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