Fix incorrect handling in multi-interface environment

[platform/upstream/connman.git] / src / backtrace.c

diff --git a/src/backtrace.c b/src/backtrace.c
index 6a66c0a..bede669 100644 (file)
--- a/src/backtrace.c
+++ b/src/backtrace.c
@@ -24,7 +24,6 @@
 #include <config.h>
 #endif
 
-#define _GNU_SOURCE
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
@@ -111,6 +110,11 @@ void print_backtrace(const char* program_path, const char* program_exec,
                buf[len] = '\0';
 
                pos = strchr(buf, '\n');
+               if (!pos) {
+                       connman_error("Error in backtrace format");
+                       break;
+               }
+
                *pos++ = '\0';
 
                if (strcmp(buf, "??") == 0) {
@@ -120,6 +124,11 @@ void print_backtrace(const char* program_path, const char* program_exec,
                }
 
                ptr = strchr(pos, '\n');
+               if (!ptr) {
+                       connman_error("Error in backtrace format");
+                       break;
+               }
+
                *ptr++ = '\0';
 
                if (strncmp(pos, program_path, pathlen) == 0)