linux-kernel - Re: [PATCH] blk-crypto: use BLK_STS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251030045013.GA9921@sol>
Date: Wed, 29 Oct 2025 21:50:13 -0700
From: Eric Biggers <ebiggers@...nel.org>
To: Carlos Llamas <cmllamas@...gle.com>
Cc: Jens Axboe <axboe@...nel.dk>, kernel-team@...roid.com,
	linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>,
	"open list:BLOCK LAYER" <linux-block@...r.kernel.org>
Subject: Re: [PATCH] blk-crypto: use BLK_STS_INVAL for alignment errors

On Thu, Oct 30, 2025 at 04:39:18AM +0000, Carlos Llamas wrote:
> Make __blk_crypto_bio_prep() propagate BLK_STS_INVAL when IO segments
> fail the data unit alignment check.
> 
> This was flagged by an LTP test that expects EINVAL when performing an
> O_DIRECT read with a misaligned buffer [1].
> 
> Cc: Eric Biggers <ebiggers@...nel.org>
> Cc: Christoph Hellwig <hch@....de>
> Link: https://lore.kernel.org/all/aP-c5gPjrpsn0vJA@google.com/ [1]
> Signed-off-by: Carlos Llamas <cmllamas@...gle.com>
> ---
>  block/blk-crypto.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/block/blk-crypto.c b/block/blk-crypto.c
> index 4b1ad84d1b5a..3e7bf1974cbd 100644
> --- a/block/blk-crypto.c
> +++ b/block/blk-crypto.c
> @@ -292,7 +292,7 @@ bool __blk_crypto_bio_prep(struct bio **bio_ptr)
>  	}
>  
>  	if (!bio_crypt_check_alignment(bio)) {
> -		bio->bi_status = BLK_STS_IOERR;
> +		bio->bi_status = BLK_STS_INVAL;
>  		goto fail;

Reviewed-by: Eric Biggers <ebiggers@...nel.org>

- Eric