linux-kernel - Re: [PATCH 1/2] mm, treewide: Rename kzfree() to kfree

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Date:   Tue, 14 Apr 2020 14:48:54 +0200
From:   David Sterba <dsterba@...e.cz>
To:     Waiman Long <longman@...hat.com>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        David Howells <dhowells@...hat.com>,
        Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Joe Perches <joe@...ches.com>,
        Matthew Wilcox <willy@...radead.org>,
        David Rientjes <rientjes@...gle.com>, linux-mm@...ck.org,
        keyrings@...r.kernel.org, linux-kernel@...r.kernel.org,
        x86@...nel.org, linux-crypto@...r.kernel.org,
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Subject: Re: [PATCH 1/2] mm, treewide: Rename kzfree() to kfree_sensitive()

On Mon, Apr 13, 2020 at 05:15:49PM -0400, Waiman Long wrote:
>  fs/btrfs/ioctl.c                              |  2 +-


> diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
> index 40b729dce91c..eab3f8510426 100644
> --- a/fs/btrfs/ioctl.c
> +++ b/fs/btrfs/ioctl.c
> @@ -2691,7 +2691,7 @@ static int btrfs_ioctl_get_subvol_info(struct file *file, void __user *argp)
>  	btrfs_put_root(root);
>  out_free:
>  	btrfs_free_path(path);
> -	kzfree(subvol_info);
> +	kfree_sensitive(subvol_info);

This is not in a sensitive context so please switch it to plain kfree.
With that you have my acked-by. Thanks.