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=1793209506; b=qXrRlvfAknx7eUn7yyAVhIhbb5DC1kvNkDmnBP0J1NevJqlV8A5spEkVtLC+NT3ixko4 79UEDJcSmRmz1Hn07FDnkZ5zODqM08A6dxK/cvGC7NIhjLg+rHba5OeGO/YHA12TTsXzV f/WLy3IlJpBxgzcbadBoVFdIcg64LhIYDyuF4Rnt9GoZYdSOh0km2jZhvcmwQaqvKThdU hFn5RWc6Mv0XrcsU3UlcijWROzwaWYY96Nk+BbAEydt0nK6dgJs1nQbPGHucUTPHCDm5s hfeO1EBA+CyETtD00SMbr8O26ItIv5bQ2+DwfBmM+bbGyXpCXDT5jukPvNfdfSXX1iw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793209506; 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=yJzwLPhxifLm7EZIZbevufdA6beIPwoRWYEgLKSm2MQ=; b=wf8YT4eM2R2gewGyP0kj/e/BNDbWFj3xP4qb+ZoOGhNftGB7xoCXwsgl2zsYkef7QI4N Ambut8SbNBITgMx9DqNqm8UBlYcV0TXIfhfNYvFcSP9H8NkqhYzpOe2RHPo5tvAXfv+xl ucESWs5z+6ItawrDxJQw8smDA3GbbkrRk7+2SaUvEeimAxWYpLkdYeK7d0W2eM7SDX7iM 3gqY0rQ1B5FVVSXyDPX35pxa+YpKXqoAcOcoDVUnJL/SQ9DrIJQtfRq47vhcPJ+uIBXHM E69pYbXo6UUPo314SxcebJDOPK6r1f9UYlr7hN0ibyu73AbCUqEYpV73oHvGIbMuSYQ== 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=c+pQsYbl; 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 6C208606A31E; Wed, 28 Oct 2026 17:45:06 +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=c+pQsYbl Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FD7C1F01825; Wed, 28 Oct 2026 17:45:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793209506; bh=yJzwLPhxifLm7EZIZbevufdA6beIPwoRWYEgLKSm2MQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=c+pQsYblPLiGYnVit/WvIvP1Ps7gqQNjTdqweiNXDAiK0p79AM6orMrIKbRF/2IUt QuIBVDgDhkRjNG+TqyC9lNVyxlJ0t+r1atDrmaot4gfWQUJylbQkLc+8vVk38hasM2 T+VHXvVnTjoQTztPy5dxT+9wAP8Mz8dZAW5fw2bk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Genjian Zhang , Mikulas Patocka Subject: [PATCH 5.10 468/516] dm-ebs: fix incorrect device offset check in ebs_ctr() Date: Wed, 28 Oct 2026 18:00:20 +0100 Message-ID: <20261028170014.567276650@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170003.522232767@linuxfoundation.org> References: <20261028170003.522232767@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 5.10-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 @@ -263,8 +263,7 @@ 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; }