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 A31991DDC04; Mon, 23 Jun 2025 21:43:17 +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=1750714999; cv=none; b=B511BrsboDRJwdmNahsPFzjvfE+qYQEsOl+ZBsYkkNF34wJ5Gl6eXCuUXCB2245iXN6awFqjKGDvzJ73Y4Hf3SilJzfhQUR9OnUchUl7teUa0RY47bGhvKHYRNYQqMKWZISZ6/vWDnUFnPhbiWFR3chU5nXy7bwJRygeMi3KRdM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750714999; c=relaxed/simple; bh=VPAZo8dgXLGU44BoDW9cvdD0mR/8GTMo5rR66GCqiR0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=tJLzWY6nWSBrqnHEtpZ4cT8TC4zlHwD9bMNg7oSRuefyLvnRvupVDLE/ISRBj8PzvJW3IYZirMBQYxfDOsTf2bfjNCvEdPUq25FmpNROGmRZmsY1za5WRs7pAZaY4unqUwUbqj069Q+Qy7XkFL+fGzAEYIu4Q9jQZZe9b/0xkfE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=A/1CvqQ8; 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="A/1CvqQ8" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF5EBC4CEEA; Mon, 23 Jun 2025 21:43:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750714997; bh=VPAZo8dgXLGU44BoDW9cvdD0mR/8GTMo5rR66GCqiR0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A/1CvqQ86l+6/UtnP/7/Q51WP6PgLDxxD/KZusaAqIag3rjU6Iqn4Q9GC8fiH6kiC EP8TYMrR6HhyeNTlUXQB915OnaSfNQjmRNB1Iwa3I8CWDQDukGwkLVvEiUCQIfk600 pdfQy5duGaCSu4UPCbRRPbDMS32cWlJjA752RfcY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Long Li , Michael Kelley , Wei Liu Subject: [PATCH 6.12 149/414] uio_hv_generic: Align ring size to system page Date: Mon, 23 Jun 2025 15:04:46 +0200 Message-ID: <20250623130645.772843763@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130642.015559452@linuxfoundation.org> References: <20250623130642.015559452@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 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Long Li commit 0315fef2aff9f251ddef8a4b53db9187429c3553 upstream. 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: Greg Kroah-Hartman --- drivers/uio/uio_hv_generic.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -243,6 +243,9 @@ hv_uio_probe(struct hv_device *dev, if (!ring_size) ring_size = SZ_2M; + /* 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;