linux-kernel - [PATCH 70/74] Kbuild, lto: Handle longer symbols in kallsyms.c

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Message-Id: <1345345030-22211-71-git-send-email-andi@firstfloor.org>
Date:	Sat, 18 Aug 2012 19:57:06 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org
Cc:	x86@...nel.org, mmarek@...e.cz, linux-kbuild@...r.kernel.org,
	JBeulich@...e.com, akpm@...ux-foundation.org,
	Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH 70/74] Kbuild, lto: Handle longer symbols in kallsyms.c

From: Andi Kleen <ak@...ux.intel.com>

Also warn for too long symbols

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 scripts/kallsyms.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 487ac6f..acde016 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;
@@ -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.\n"
+                                "Please increae KSYM_NAME_LEN both in kernel and kallsyms.c",
+			str);
+		return -1;
+	}
 
 	sym = str;
 	/* skip prefix char */
-- 
1.7.7.6

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