From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793207682; b=yzbjFAkjRV9M0o1zLSA45KvU5Isr7q/iaPxH3swj6fF4tQU5z+Neopv/2+c65s4A3AnY WC59BqG0xq/9Pyc5hWZiYYju8K4GvnDNGreaEQof7kjVemVV1H5i9HhxVgFLtdgJIkflx mCS89Rr24iZMPwhGctN0QRT1l2fj64SNie6P9CU4F4y+xNmCyJxYDwMCfP7KY7HSkLyfc vJ7+O0b429WsclcizINJv3mOcmtL8VwM93RqweWE4hcyr5kJdkbnHkVXtCW5zDDwbYukE PhlUh0EkbMszI/3QKUYQGxi+bsfjHNM9OGFBNM3xapVCYXeo6ElawRpDNPeNcvnft8g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793207682; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=fMN6Ym9pRn0vut8fx1kgyFib+TykkHA8ruTyqL9iO7o=; b=nBsgTzHzWGJK5tDS7klxEB6yBMGyisDIXyYTs9lF5v6vpR41SjsO/khUk30g10ta8DMj z5cDbVGvuIGJ9GDYUDHnKKMb8jMwvKZ4siSJJHpuM++pGNEQ//taxHVz6sX//6FA+rEWo qgP76sKi8SmsXJjfI4mTm0K0SkxL5s2Cw5ChEe5+5tMEGrTH7M973zZgNW12RYivSwtel kO1WRDD0//LAdKttICbgsVhgqwxKWR/du2gVS+N3XOLKjNIITqcLSk0fsTMxLQTbc04d7 3tEgbpfNPwCHMePu7Fy3I1aBXmyOuzU62mew3LDHqctq4WeLca4HAJTsw8MK/QWejCw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=DJ+BJefk; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 036B4606A31A; Wed, 28 Oct 2026 17:14:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=DJ+BJefk Received: by smtp.kernel.org (Postfix) with ESMTPSA id 27AE41F01825; Wed, 28 Oct 2026 17:14:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793207681; bh=fMN6Ym9pRn0vut8fx1kgyFib+TykkHA8ruTyqL9iO7o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=DJ+BJefk7JV6Lq8ORyiDpGq2eMO4pK39RSyHJLpxkFqWckY3rm49TliWxe5dHejkd xFOa+wg+UGXRE0qrfRWSQALMht2LeGd9nObnJF+eRGv2OpMgCkxZb1bI/tYDOQg1QQ i7tZ/ZhaAiuKYbmMObvBIQkeybKMl/0Crn54MgVI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Genjian Zhang , Mikulas Patocka Subject: [PATCH 6.12 102/247] dm-ebs: fix incorrect device offset check in ebs_ctr() Date: Wed, 28 Oct 2026 17:58:25 +0100 Message-ID: <20261028165949.813007903@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028165947.349197979@linuxfoundation.org> References: <20261028165947.349197979@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Genjian Zhang commit 7ac81e2d2240f2c57bd073b0733e0b2abca38e82 upstream. is a backing-device sector offset; ti->len is the virtual target length. Comparing them rejects valid tables, e.g.: dmsetup create ebs0 --table "0 1048576 ebs /dev/sda 2097152 1 8" -> ebs: Invalid device offset sector (-EINVAL) Drop the check. Bounds against the backing device are already enforced later by device_area_is_invalid() via ebs_iterate_devices(). Cc: stable@vger.kernel.org Fixes: d3c7b35c20d6 ("dm: add emulated block size target") Signed-off-by: Genjian Zhang Signed-off-by: Mikulas Patocka Signed-off-by: Greg Kroah-Hartman --- drivers/md/dm-ebs-target.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) --- a/drivers/md/dm-ebs-target.c +++ b/drivers/md/dm-ebs-target.c @@ -265,8 +265,7 @@ static int ebs_ctr(struct dm_target *ti, r = -EINVAL; if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1 || - tmp != (sector_t)tmp || - (sector_t)tmp >= ti->len) { + tmp != (sector_t)tmp) { ti->error = "Invalid device offset sector"; goto bad; }