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[199.106.103.254]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2f88885b820sm16887442eec.20.2026.05.12.02.52.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2026 02:52:07 -0700 (PDT) From: Linlin Zhang To: Mikulas Patocka Cc: Alasdair Kergon , Mike Snitzer , Benjamin Marzinski , dm-devel@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v1 1/1] dm-inlinecrypt: initialize blk-crypto key as HW-wrapped key Date: Tue, 12 May 2026 02:52:03 -0700 Message-Id: <20260512095203.3688708-2-linlin.zhang@oss.qualcomm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260512095203.3688708-1-linlin.zhang@oss.qualcomm.com> References: <20260512095203.3688708-1-linlin.zhang@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-ORIG-GUID: 1GJk1MAEjRrEX7XUX7HgiuxpU4QQ-29- X-Proofpoint-GUID: 1GJk1MAEjRrEX7XUX7HgiuxpU4QQ-29- X-Authority-Analysis: v=2.4 cv=H8brBeYi c=1 sm=1 tr=0 ts=6a02f849 cx=c_pps a=Uww141gWH0fZj/3QKPojxA==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=EUspDBNiAAAA:8 a=EusemhtJF9FVNhmqrvwA:9 a=PxkB5W3o20Ba91AHUih5:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTEyMDA5OSBTYWx0ZWRfX7v0Q972eVc5Y 8Va+TJfla2iegRQEbMNnxxXx6jU9m163IaNqfYpdURKRUCeFBvqc+0wcmz9BPO8hqMbAM6b2f/3 RlzEYZJLFPD8HRj7DAyQqRAa3U2z3xhhHqueYY3sZgZ6OWajmQQ6/SySRrV9FXQsxg5rn4dzE3g Omz9Eo5eAirIvKZHRyGfcA9SknKBnspUUoGanC1ZCQhF16ozOum14K3DxhAlloZ4byF8aRcgNqS l6C1wuwxJBOcLXUDHFhLQb4tUsGcStwOP9/As/zd5ARTFFRhwddefMjSw38bDZW5CM31u+CbpgT WP+lUmgtcfeI/tj46efJyJMLnvfUFqIphMSWxPuIfxV/J7JtGCAH+eccDBTXuz9MEvK+LEaTDmf 9rZriptS8MgJDPvbInwZyRxNhy6J3xqxMzqWyc+V2uwJSSOzagJwfXiKtyPtWgkBKqfwL+oAsjB cp4k0EOGcHnQeerNPrA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-11_05,2026-05-08_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 malwarescore=0 phishscore=0 spamscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605050000 definitions=main-2605120099 Content-Type: text/plain; charset="utf-8" dm-inlinecrypt currently initializes the blk-crypto key using BLK_CRYPTO_KEY_TYPE_RAW, which implies that the provided key material is a plaintext software key owned by the block layer. However, on platforms where dm-inlinecrypt is used together with a hardware-backed key source (e.g. TrustZone/TEE or other secure key wrapping mechanisms), the key material passed down is already wrapped and must be treated as opaque by the block layer. Initialize the blk-crypto key using BLK_CRYPTO_KEY_TYPE_HW_WRAPPED instead, so that dm-inlinecrypt correctly models hardware-wrapped keys and avoids incorrect assumptions about key ownership and visibility. Signed-off-by: Linlin Zhang --- drivers/md/dm-inlinecrypt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-inlinecrypt.c b/drivers/md/dm-inlinecrypt.c index bd8e58a028c5..bcbf363c533a 100644 --- a/drivers/md/dm-inlinecrypt.c +++ b/drivers/md/dm-inlinecrypt.c @@ -386,7 +386,7 @@ static int inlinecrypt_ctr(struct dm_target *ti, unsign= ed int argc, char **argv) dun_bytes =3D DIV_ROUND_UP(fls64(ctx->max_dun), 8); =20 err =3D blk_crypto_init_key(&ctx->key, raw_key, ctx->key_size, - BLK_CRYPTO_KEY_TYPE_RAW, + BLK_CRYPTO_KEY_TYPE_HW_WRAPPED, cipher->mode_num, dun_bytes, ctx->sector_size); if (err) { --=20 2.34.1