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 D3C4D2E719E; Tue, 15 Jul 2025 13:51:56 +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=1752587516; cv=none; b=T2qpPXku8ymtCRG9Pl2BOBUgsVIFayC+ZkDWxQBVJsCou3CDdHtwGdrJjoyFHIeuD8E4Wj3lZg+5A/x2fja6TtbmMxAjzadW0SL589dq1lmW8ayrzcYH9fvvptIilMYRXB6COz3Vo/WtHIKpxUpzHLoHDM2eQS4kPYSaXnMW4A0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752587516; c=relaxed/simple; bh=JjIJyPkDFOoh4eK5A9dW64lPwpmFX5DKBO4XT0/Q4Dk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=SQwnIQg0tg27k+Kf993gE+0XF3Xl3xRQjs+BScQ4heWvsMWlu/F2Tg1Gfis7LfD5YAEdSv5fGZwElGWBESounPnLkilJggANXilAB6KBSOcPUcM4QZhkqeowMc+eV7VldBpEpiALXwpcHGhDxrMmvACuY+cFVgDLUjMMoKX/G/M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=PU9SZAfc; 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="PU9SZAfc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 66E51C4CEF1; Tue, 15 Jul 2025 13:51:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1752587516; bh=JjIJyPkDFOoh4eK5A9dW64lPwpmFX5DKBO4XT0/Q4Dk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PU9SZAfcsteVeqt2R0uvuNlOURIHTzYqk1/ZPNur6s5I/dSydLk3GbOydCAlkYEjS 2kG121F0Q2JUZ/JDxRC+T5hJ+401gyEIlOzafQA5OFyoTmvN/liN+VK6KkLVbiLbdz JQ+XjPnWaPPv/fhO1tlxrEN9kLI30P/MPtlhW5II= 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 5.10 042/208] uio_hv_generic: Align ring size to system page Date: Tue, 15 Jul 2025 15:12:31 +0200 Message-ID: <20250715130812.642677989@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250715130810.830580412@linuxfoundation.org> References: <20250715130810.830580412@linuxfoundation.org> User-Agent: quilt/0.68 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 5.10-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 03a4ca762c499..6625d340f3ac5 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