Re: [Patch 3/9] fs/compat.c: fix resource leaks and wrong goto's

[Al Viro <viro@ZenIV.linux.org.uk>]

On Thu, May 08, 2008 at 09:52:28PM +0800, WANG Cong wrote:
> Use free_arg_pages() to free the pages allocated by copy_strings_kernel()
> on failure. And fix some related wrong goto pathes.

Kinda; free_arg_pages() is needed here, but there's no need to mess with
goto - just put it under out:

Note that it's essentially just a part of freeing bprm; it's _not_ a "clean
collected strings, so that we could add new ones".

> @@ -1403,6 +1403,7 @@ int compat_do_execve(char * filename,
>  	retval = search_binary_handler(bprm, regs);
>  	if (retval >= 0) {
>  		/* execve success */
> +		free_arg_pages(bprm);
>  		security_bprm_free(bprm);
>  		acct_update_integrals(current);
>  		kfree(bprm);
> @@ -1410,6 +1411,9 @@ int compat_do_execve(char * filename,
>  	}
>  
>  out:
> +	free_arg_pages(bprm);
> +
> +out_sec:
>  	if (bprm->security)
>  		security_bprm_free(bprm);
>