Re: [PATCH] lib/inflate: fix memory leak in inflate_dynamic() on inflate_codes() failure

[Kuan-Wei Chiu]

Hi Josh,

On Fri, Mar 06, 2026 at 04:16:47PM +0000, Josh Law wrote:
> When inflate_codes() fails in inflate_dynamic(), the code jumps to the
> 'out' label which only frees 'll', leaking the Huffman tables 'tl' and
> 'td'. Restructure the code so that the decoding tables are always freed
> before reaching the 'out' label.
> 
> Signed-off-by: Josh Law <objecting@xxxxxxxxxxxxx>

The change itself looks good.
However, IIRC, this isn't the first time I've complained about the
following checkpatch.pl warning:

WARNING: From:/Signed-off-by: email address mismatch: 'From: Josh Law <hlcj1234567@xxxxxxxxx>' != 'Signed-off-by: Josh Law <objecting@xxxxxxxxxxxxx>'

Regards,
Kuan-Wei

> ---
>  lib/inflate.c | 7 +++----
>  1 file changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/lib/inflate.c b/lib/inflate.c
> index 5b1e70d0ce8c..ae704e4f64ec 100644
> --- a/lib/inflate.c
> +++ b/lib/inflate.c
> @@ -1009,10 +1009,10 @@ DEBG("dyn5d ");
>  DEBG("dyn6 ");
>  
>    /* decompress until an end-of-block code */
> -  if (inflate_codes(tl, td, bl, bd)) {
> +  if (inflate_codes(tl, td, bl, bd))
>      ret = 1;
> -    goto out;
> -  }
> +  else
> +    ret = 0;
>  
>  DEBG("dyn7 ");
>  
> @@ -1021,7 +1021,6 @@ DEBG("dyn7 ");
>    huft_free(td);
>  
>    DEBG(">");
> -  ret = 0;
>  out:
>    free(ll);
>    return ret;
> -- 
> 2.43.0
> 
>