linux-kernel - Re: [PATCH] fs: System memory leak when running HTX with T10 DIF enabled

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Date:   Wed, 28 Jun 2017 13:10:31 -0400
From:   Keith Busch <keith.busch@...el.com>
To:     wenxiong@...ux.vnet.ibm.com
Cc:     linux-kernel@...r.kernel.org, axboe@...com,
        bjking@...ux.vnet.ibm.com, hch@....de
Subject: Re: [PATCH] fs: System memory leak when running HTX with T10 DIF
 enabled

On Wed, Jun 28, 2017 at 11:32:51AM -0500, wenxiong@...ux.vnet.ibm.com wrote:
> diff --git a/fs/block_dev.c b/fs/block_dev.c
> index 519599d..e871444 100644
> --- a/fs/block_dev.c
> +++ b/fs/block_dev.c
> @@ -264,6 +264,10 @@ static void blkdev_bio_end_io_simple(struct bio *bio)
>  
>  	if (unlikely(bio.bi_error))
>  		return bio.bi_error;
> +
> +	if (bio_integrity(&bio))
> +		bio_integrity_free(&bio);
> +
>  	return ret;
>  }

We don't want to leak the integrity payload in case of bi_error either.