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 55FB12E091E; Tue, 8 Jul 2025 16:57:52 +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=1751993872; cv=none; b=SZhQzUg0ShKRpuQvLXpgRHPExmeNl+oUz4W7TxjJefdcTp6YKjU+x8DcUhV/Kdn62MEOW7RvFbIhmmMjHKfCerP7h3TCNkaryVGlwjmCE8oe3CjWssGyaXc+ZZ5/xtqY+GNqe4BNwgNXtbV53Fso+QoL2ELQmbXBIodHP5UV0+U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751993872; c=relaxed/simple; bh=ce+mnEmqVsPR5MoZFEtkRDVpBBcyz4TiZcqnNamlrEU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=shpjcXAvnL7rMt2TuFDSJilo0R6obM0gP6rXQ/Kx7kl6CiF1j3mGIkttxnmfkLBL3QSuc2L4pjVJWbLKVCC3vTCgF60oHLISf5L7rmCvscRAjqG0XdRgCDm2FFmmJpEnjh7rfCAGOjPurVC7OPxbRJn2ibvtoi1s9THmdkx8g0c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=k8BEyhgn; 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="k8BEyhgn" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D83A9C4CEED; Tue, 8 Jul 2025 16:57:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1751993872; bh=ce+mnEmqVsPR5MoZFEtkRDVpBBcyz4TiZcqnNamlrEU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=k8BEyhgn46y76L4BGAHi7RiOxi3SVgwT16j9DP+qfvrCGCHcdRRWoJCd40imaArV5 Uvfb+2kSn0AT0Un0mz/APUnFBOgiseZ4P4TDhdduoNZkF8NiD6XnjhhFb1Z151Zbnr WeGMKMJuwUZx3v6AOIQR+gUO3KgFSR9pJ6WNJRhY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Long Li , Michael Kelley , Wei Liu , Sasha Levin Subject: [PATCH 5.15 048/160] uio_hv_generic: Align ring size to system page Date: Tue, 8 Jul 2025 18:21:25 +0200 Message-ID: <20250708162232.868238349@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250708162231.503362020@linuxfoundation.org> References: <20250708162231.503362020@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Long Li [ Upstream commit 0315fef2aff9f251ddef8a4b53db9187429c3553 ] Following the ring header, the ring data should align to system page boundary. Adjust the size if necessary. Cc: stable@vger.kernel.org Fixes: 95096f2fbd10 ("uio-hv-generic: new userspace i/o driver for VMBus") Signed-off-by: Long Li Reviewed-by: Michael Kelley Link: https://lore.kernel.org/r/1746492997-4599-4-git-send-email-longli@linuxonhyperv.com Signed-off-by: Wei Liu Message-ID: <1746492997-4599-4-git-send-email-longli@linuxonhyperv.com> Signed-off-by: Sasha Levin --- drivers/uio/uio_hv_generic.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index db8a450b5a19b..865a5b289e0a5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -260,6 +260,9 @@ hv_uio_probe(struct hv_device *dev, if (!ring_size) ring_size = HV_RING_SIZE * PAGE_SIZE; + /* Adjust ring size if necessary to have it page aligned */ + ring_size = VMBUS_RING_SIZE(ring_size); + pdata = devm_kzalloc(&dev->device, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; -- 2.39.5