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 6A2A81F470A; Tue, 21 Jan 2025 18:02:28 +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=1737482548; cv=none; b=XI5dqkIn3R9TX9LnaIFmI+p3l4qpaxDLh+qWaOg+Upm3MAHxyf+/gzcfC5488KWSemc/aHNywGRyOMRYBkA71guaRzIOPUvPqtQMPxK6EOwhKc2mBF1V4m96rcbk3Y50eZmhydRkyqW2epZw/3luPod6rZf/KePrH94yxFL4oww= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737482548; c=relaxed/simple; bh=B1J8AQznSYd5T+zmW7jCeVGkZWIY3Dwy6vG2YS/MeZk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hYf5ihPmpLBDRcyWj2Lp1SPQ8va/GTSG49vHn5pyHDadvkRxxIe+kqXVOa2YXNfz1f2w2f16ds5G3bJfqrCoVZqrqJX/iMRhC1KIl7QjfOB4VMWZshsKTuiMQO8MT+EzIxG1rphEqImW779WA7aDs/NldA1nEgtxnrAEpGbJAr8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=M0Tj0z5i; 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="M0Tj0z5i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DF43EC4CEDF; Tue, 21 Jan 2025 18:02:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1737482548; bh=B1J8AQznSYd5T+zmW7jCeVGkZWIY3Dwy6vG2YS/MeZk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M0Tj0z5i+17rwbCitArHOUQuONb+WS7/hbE+kJlUiBPKcz8noGytwdkfzq/j2/Duh epVSnP25zyo2X1QomMcGLC2ZCi94VqeV6IN1cQBE9Q/j0bzOyDKQSTd9PA5YtE77kv sSVKhTJp1rcss2RB7Sncnczyot2zNYa1AbruVwGY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Guo Weikang , Uros Bizjak , Catalin Marinas , Andrew Morton Subject: [PATCH 6.12 097/122] mm/kmemleak: fix percpu memory leak detection failure Date: Tue, 21 Jan 2025 18:52:25 +0100 Message-ID: <20250121174536.769890528@linuxfoundation.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250121174532.991109301@linuxfoundation.org> References: <20250121174532.991109301@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: Guo Weikang commit 76d5d4c53e68719c018691b19a961e78524a155c upstream. kmemleak_alloc_percpu gives an incorrect min_count parameter, causing percpu memory to be considered a gray object. Link: https://lkml.kernel.org/r/20241227092311.3572500-1-guoweikang.kernel@gmail.com Fixes: 8c8685928910 ("mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space") Signed-off-by: Guo Weikang Acked-by: Uros Bizjak Acked-by: Catalin Marinas Cc: Guo Weikang Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -1071,7 +1071,7 @@ void __ref kmemleak_alloc_percpu(const v pr_debug("%s(0x%px, %zu)\n", __func__, ptr, size); if (kmemleak_enabled && ptr && !IS_ERR_PCPU(ptr)) - create_object_percpu((__force unsigned long)ptr, size, 0, gfp); + create_object_percpu((__force unsigned long)ptr, size, 1, gfp); } EXPORT_SYMBOL_GPL(kmemleak_alloc_percpu);