On 01/02/2013 07:41 PM, Rusty Russell wrote: > Sasha Levin <sasha.le...@oracle.com> writes: > >> If we try to finit_module on a file sized 0 bytes vmalloc will >> scream and spit out a warning. >> >> Since modules have to be bigger than 0 bytes anyways we can just >> check that beforehand and avoid the warning. > > Applied, but I added the comment you somehow missed :)
Thanks! I do have a somewhat related follow-up question: When init_module() goes through the module loading process, it will try to vmalloc() whatever size passed to it by the user, which may cause vmalloc() to scream and shout if the size passed from userspace is too big. Do you think that reading just the header and doing a quick elf_header_check() on it before trying to read the entire file would make sense here? Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
