Message ID | 20220927131518.30000-3-ojeda@kernel.org (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Rust support | expand |
On Tue, Sep 27, 2022 at 03:14:33PM +0200, Miguel Ojeda wrote: > From: Boqun Feng <boqun.feng@gmail.com> > > This introduces `KSYM_NAME_LEN_BUFFER` in place of the previously > hardcoded size of the input buffer. > > It will also make it easier to update the size in a single place > in a later patch. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Boqun Feng <boqun.feng@gmail.com> > Co-developed-by: Miguel Ojeda <ojeda@kernel.org> > Signed-off-by: Miguel Ojeda <ojeda@kernel.org> > --- > scripts/kallsyms.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On Tue, Sep 27, 2022 at 03:14:33PM +0200, Miguel Ojeda wrote: > From: Boqun Feng <boqun.feng@gmail.com> > > This introduces `KSYM_NAME_LEN_BUFFER` in place of the previously > hardcoded size of the input buffer. > > It will also make it easier to update the size in a single place > in a later patch. > > Reviewed-by: Kees Cook <keescook@chromium.org> > Signed-off-by: Boqun Feng <boqun.feng@gmail.com> > Co-developed-by: Miguel Ojeda <ojeda@kernel.org> > Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Wei Liu <wei.liu@kernel.org>
diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c index 8551513f9311..25e2fe5fbcd4 100644 --- a/scripts/kallsyms.c +++ b/scripts/kallsyms.c @@ -27,8 +27,14 @@ #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(arr[0])) +#define _stringify_1(x) #x +#define _stringify(x) _stringify_1(x) + #define KSYM_NAME_LEN 128 +/* A substantially bigger size than the current maximum. */ +#define KSYM_NAME_LEN_BUFFER 499 + struct sym_entry { unsigned long long addr; unsigned int len; @@ -198,13 +204,13 @@ static void check_symbol_range(const char *sym, unsigned long long addr, static struct sym_entry *read_symbol(FILE *in) { - char name[500], type; + char name[KSYM_NAME_LEN_BUFFER+1], type; unsigned long long addr; unsigned int len; struct sym_entry *sym; int rc; - rc = fscanf(in, "%llx %c %499s\n", &addr, &type, name); + rc = fscanf(in, "%llx %c %" _stringify(KSYM_NAME_LEN_BUFFER) "s\n", &addr, &type, name); if (rc != 3) { if (rc != EOF && fgets(name, ARRAY_SIZE(name), in) == NULL) fprintf(stderr, "Read error or end of file.\n");