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 B4528FBF2; Sat, 3 Feb 2024 04:11:49 +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=1706933509; cv=none; b=Q5QVdiEo5WVGzorEoIv6UjJX3yAriezOGMcbWztIudIIIbcM8kltRzNdf2ExBJSNml0Yu5W3il5QKUyRLKF1tm4tWWZ139VBqo4Isk96Y9Irkycl/9lbAohCdk8aRFbpFuotLrqL/kkW09mbW0HndYPwCdrVBeOooULiXq7JCO8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706933509; c=relaxed/simple; bh=PAsaa+5KztzH0P8uW6547nKEUhKP0hG8OQamR9LOEKc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Mm6uGCLmCpiKrIqBP7GzyPqz+Y1cOabRXp0Bg05GMT416bBcy3HF5l21LKhycX/KUkOUQrgR70JTwgiRirhgE3foBU6eibQvcBerKf8E02w6QFwc5gN02ZaLguNhmuQvtGp34gMgKzVq4WZ+Sk9POMzmwZdx5RJxxGfBdsURDi8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=OWmaXpFe; 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="OWmaXpFe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 78D42C43394; Sat, 3 Feb 2024 04:11:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1706933509; bh=PAsaa+5KztzH0P8uW6547nKEUhKP0hG8OQamR9LOEKc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OWmaXpFeITNzqru+ZO0bvgTs0lZWb9NgKz/u13wNE5PMSkuBp0X5uOvrdC/jOEbIA eh2rtq99/ujFMiWLX4+5jy1YkCHugyfWn6oyhyiKTmio6sfE3bBZPJb0Xz+dtGgneT BxP/wjQuNLOCU/BSj1fWpIdK1RMyCylJhHJnRkAY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yuntao Wang , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.6 021/322] ACPI: NUMA: Fix the logic of getting the fake_pxm value Date: Fri, 2 Feb 2024 20:01:58 -0800 Message-ID: <20240203035359.732622339@linuxfoundation.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240203035359.041730947@linuxfoundation.org> References: <20240203035359.041730947@linuxfoundation.org> User-Agent: quilt/0.67 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 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Yuntao Wang [ Upstream commit e3f577830ce216b0ca21d4750cbbd64cfc21efff ] The for loop does not iterate over the last element of the node_to_pxm_map array. This could lead to a conflict between the final fake_pxm value and the existing pxm values. That is, the final fake_pxm value can not be guaranteed to be an unused pxm value. While at it, fix up white space in slit_valid(). Signed-off-by: Yuntao Wang [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/numa/srat.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/numa/srat.c b/drivers/acpi/numa/srat.c index 12f330b0eac0..b57de78fbf14 100644 --- a/drivers/acpi/numa/srat.c +++ b/drivers/acpi/numa/srat.c @@ -183,7 +183,7 @@ static int __init slit_valid(struct acpi_table_slit *slit) int i, j; int d = slit->locality_count; for (i = 0; i < d; i++) { - for (j = 0; j < d; j++) { + for (j = 0; j < d; j++) { u8 val = slit->entry[d*i + j]; if (i == j) { if (val != LOCAL_DISTANCE) @@ -532,7 +532,7 @@ int __init acpi_numa_init(void) */ /* fake_pxm is the next unused PXM value after SRAT parsing */ - for (i = 0, fake_pxm = -1; i < MAX_NUMNODES - 1; i++) { + for (i = 0, fake_pxm = -1; i < MAX_NUMNODES; i++) { if (node_to_pxm_map[i] > fake_pxm) fake_pxm = node_to_pxm_map[i]; } -- 2.43.0