Kbuild: Handle longer symbols in kallsyms.c

Also warn for too long symbols v2: Add missing newline. Use 255 max (Joe Perches) Signed-off-by: Andi Kleen <[email protected]> Signed-off-by: Michal Marek <[email protected]>
rtvt123 · Nov 6, 2013 · f3462aa · f3462aa
1 parent eea0e9c
commit f3462aa
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
@@ -27,7 +27,7 @@
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0]))
 #endif
 
-#define KSYM_NAME_LEN		128
+#define KSYM_NAME_LEN		255
 
 struct sym_entry {
 	unsigned long long addr;
@@ -111,6 +111,12 @@ static int read_symbol(FILE *in, struct sym_entry *s)
 			fprintf(stderr, "Read error or end of file.\n");
 		return -1;
 	}
+	if (strlen(str) > KSYM_NAME_LEN) {
+		fprintf(stderr, "Symbol %s too long for kallsyms (%lu vs %d).\n"
+                                "Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n",
+			str, strlen(str), KSYM_NAME_LEN);
+		return -1;
+	}
 
 	sym = str;
 	/* skip prefix char */