Re: [PATCH] ext4: added missing kfree

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On Fri, May 02, 2025 at 10:40:12AM -0700, Nicolas Bretz wrote:
> Added one missing kfree to fsmap.c
> 
> Signed-off-by: Nicolas Bretz <bretznic@xxxxxxxxx>
> ---
>  fs/ext4/fsmap.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/fs/ext4/fsmap.c b/fs/ext4/fsmap.c
> index b232c2767534..d41210abea0c 100644
> --- a/fs/ext4/fsmap.c
> +++ b/fs/ext4/fsmap.c
> @@ -304,6 +304,7 @@ static inline int ext4_getfsmap_fill(struct list_head *meta_list,
>  	fsm->fmr_length = len;
>  	list_add_tail(&fsm->fmr_list, meta_list);
>  
> +	kfree(fsm);

OI: UAF, NAK.

--D

>  	return 0;
>  }
>  
> -- 
> 2.43.0
> 
> 




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