[PATCH 2/3] Kbuild: Handle longer symbols in kallsyms.c

[Andi Kleen]

From: Andi Kleen <ak@xxxxxxxxxxxxxxx>

Also warn for too long symbols

Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
---
 scripts/kallsyms.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 6940f00..46264c7 100644
--- 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		256
 
 struct sym_entry {
 	unsigned long long addr;
@@ -118,6 +118,12 @@ 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.\n"
+                                "Please increase KSYM_NAME_LEN both in kernel and kallsyms.c",
+			str);
+		return -1;
+	}
 
 	sym = str;
 	/* skip prefix char */
-- 
1.8.3.1

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