From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 20A6226A1AB; Fri, 10 Oct 2025 13:18:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760102319; cv=none; b=JOm9/x7BdxCiBVvd9DlHpcnPxDXrFCDYSUMQog/87TDIcnDnvEPsjsgXsGqc42ZEBU/+/5uARlV8XIetfuhGWcFTy8we/g+L4mqhB59f3Qv9D5v7LT6i6IL1UemruvQ5CjAR0HlZOXh022kSOQ7kJx8EcPaxqpWVSo4YP+RDJmY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760102319; c=relaxed/simple; bh=RzHOZR2zskNr93wDQ+RT31Od2zq/RIVKdi5cG9fGzFE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WLHHP5y9ORkzdarw3onUbctHcX5od1gAjyTlCuB7lVmz+srSLI1TcnLjpxGLbw1D85sceS35A/ftehbSiitODJ4T7AOyR2kNMH0eHPi1z5ZU5pA415AQ/EET//2M80qpn5MYk0wVqbsFAsP24cV278KOr7FkHnaOhMqfJMBfU3U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=z4x0zEmT; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="z4x0zEmT" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A03D7C4CEF8; Fri, 10 Oct 2025 13:18:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1760102319; bh=RzHOZR2zskNr93wDQ+RT31Od2zq/RIVKdi5cG9fGzFE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=z4x0zEmTYSWmq87Y/4SqdqiDiTSKZzLc3RdLm5I61dxm7t1vdngtkNF0irLdljDwt wCIRoBJziGrkNIcVL8rqJa83pFqpZOT5WYC/ZzOwcYwjx+SxyrR9MwBEMfEZmKoWia 1XLlw//RFcRYQ9111WXVg9fGa0Pbl+XkEJGFm3HE= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mikulas Patocka , Sasha Levin Subject: [PATCH 6.16 15/41] dm-integrity: limit MAX_TAG_SIZE to 255 Date: Fri, 10 Oct 2025 15:16:03 +0200 Message-ID: <20251010131333.976298929@linuxfoundation.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251010131333.420766773@linuxfoundation.org> References: <20251010131333.420766773@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mikulas Patocka [ Upstream commit 77b8e6fbf9848d651f5cb7508f18ad0971f3ffdb ] MAX_TAG_SIZE was 0x1a8 and it may be truncated in the "bi->metadata_size = ic->tag_size" assignment. We need to limit it to 255. Signed-off-by: Mikulas Patocka Signed-off-by: Sasha Levin --- drivers/md/dm-integrity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index 4395657fa5838..7b1d8f0c62fda 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -133,7 +133,7 @@ struct journal_sector { commit_id_t commit_id; }; -#define MAX_TAG_SIZE (JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK])) +#define MAX_TAG_SIZE 255 #define METADATA_PADDING_SECTORS 8 -- 2.51.0