The size of the variable alias provided to do_entry functions are currently not readily available. Thus hindering do_entry functions to perform bounds checking.
Define the macro ALIAS_SIZE containing the size of the variable alias. Signed-off-by: Mattias Jacobsson <2...@mok.nu> --- Related discussion: [1] and [2] (around the first answer line) [1]: https://lore.kernel.org/lkml/20190128150909.4r3tje5l34u5t...@mok.nu/ [2]: https://lore.kernel.org/lkml/CAHp75VcLizx+jtMrbc3Ev-HcJVEjH2naFC0sj=7fx5nzscg...@mail.gmail.com/ --- scripts/mod/file2alias.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c index a37af7d71973..afe22af20d7d 100644 --- a/scripts/mod/file2alias.c +++ b/scripts/mod/file2alias.c @@ -50,6 +50,9 @@ struct devtable { int (*do_entry)(const char *filename, void *symval, char *alias); }; +/* Size of alias provided to do_entry functions */ +#define ALIAS_SIZE 500 + /* Define a variable f that holds the value of field f of struct devid * based at address m. */ @@ -1303,7 +1306,7 @@ static void do_table(void *symval, unsigned long size, struct module *mod) { unsigned int i; - char alias[500]; + char alias[ALIAS_SIZE]; device_id_check(mod->name, device_id, size, id_size, symval); /* Leave last one: it's the terminator. */ -- 2.20.1
