kallsyms: Handle too long symbols in kallsyms.c

[ Upstream commit 6db2983cd8064808141ccefd75218f5b4345ffae ]

When checking for symbols with excessively long names,
account for null terminating character.

Fixes: f3462aa952cf ("Kbuild: Handle longer symbols in kallsyms.c")
Signed-off-by: Eugene Loh <eugene.loh@oracle.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index a9186a9..0c9c54b 100644 (file)
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -120,8 +120,8 @@ static int read_symbol(FILE *in, struct sym_entry *s)
                        fprintf(stderr, "Read error or end of file.\n");
                return -1;
        }
-       if (strlen(sym) > KSYM_NAME_LEN) {
-               fprintf(stderr, "Symbol %s too long for kallsyms (%zu vs %d).\n"
+       if (strlen(sym) >= KSYM_NAME_LEN) {
+               fprintf(stderr, "Symbol %s too long for kallsyms (%zu >= %d).\n"
                                "Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n",
                        sym, strlen(sym), KSYM_NAME_LEN);
                return -1;