From patchwork Fri Apr 22 06:24:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?TWFyay1QSyBUc2FpICjolKHmspvliZsp?= X-Patchwork-Id: 12822842 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 50C60C433F5 for ; Fri, 22 Apr 2022 06:31:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=A6Ud/wUM6XHPS2Qoy64DlImc8jiJbECLDdyGOnIs/V0=; b=tfIIiXxLBrQPSB Zh+1RhyD0ELq1PuG2kwVtQ5LfWhN+rWUQLlfMftrHJDjcJfP+FsEEKAp3JutJmD0jWS/JARla3Ned NFgkj3869hmXkbWF9VaZDZTo8tP2WGVK1stQuu7Q3dbiOpcTtAHnQ/ybw7IrUoOkNU5p/jgbetCI9 +hreej4GyQWnZrCzOOpWDelTNtZ9w1iVu1/T1nVv+tuJf0KOLYDfdXRrFw5sideD8l+Ty7dbOTK+c U1oRjz7FlmLdOL3NuEhtJu8pkr5g61nboQT4miY9mkeVFZgHoZGpk6keUYvKA8T7pd12vHbECs/A5 5dtmTCDS76uzOjCVPKEA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhmne-00GYJ6-30; Fri, 22 Apr 2022 06:29:51 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nhmim-00GW2l-Lr; Fri, 22 Apr 2022 06:24:50 +0000 X-UUID: 0e8ea3cb4c4547f3ab83e14f2dc3c192-20220421 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.4, REQID:234c1611-106f-4fec-919a-86709b4bdd2d, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-20,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,AC TION:release,TS:-20 X-CID-META: VersionHash:faefae9, CLOUDID:e42f94f0-da02-41b4-b6df-58f4ccd36682, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:1,EDM:-3,File:nil,QS:0,BEC:nil X-UUID: 0e8ea3cb4c4547f3ab83e14f2dc3c192-20220421 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 1697608761; Thu, 21 Apr 2022 23:24:43 -0700 Received: from mtkmbs07n1.mediatek.inc (172.21.101.16) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Thu, 21 Apr 2022 23:24:42 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n1.mediatek.inc (172.21.101.16) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Fri, 22 Apr 2022 14:24:41 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 22 Apr 2022 14:24:41 +0800 From: Mark-PK Tsai To: , , CC: , , , , , , , , , Subject: [PATCH 2/2] remoteproc: Fix dma_mem leak after rproc_shutdown Date: Fri, 22 Apr 2022 14:24:36 +0800 Message-ID: <20220422062436.14384-3-mark-pk.tsai@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220422062436.14384-1-mark-pk.tsai@mediatek.com> References: <20220422062436.14384-1-mark-pk.tsai@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220421_232448_759617_04450B5A X-CRM114-Status: UNSURE ( 9.22 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Release dma coherent memory before rvdev is free in rproc_rvdev_release(). Below is the kmemleak report: unreferenced object 0xffffff8051c1a980 (size 128): comm "sh", pid 4895, jiffies 4295026604 (age 15481.896s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<000000003a0f3ec0>] dma_declare_coherent_memory+0x44/0x11c [<00000000ad243164>] rproc_add_virtio_dev+0xb8/0x20c [<00000000d219c8e9>] rproc_vdev_do_start+0x18/0x24 [<00000000e694b468>] rproc_start+0x22c/0x3e0 [<000000000b938941>] rproc_boot+0x4a4/0x860 [<000000003c4dc532>] state_store.52856+0x10c/0x1b8 [<00000000df2297ac>] dev_attr_store+0x34/0x84 [<0000000083a53bdb>] sysfs_kf_write+0x60/0xbc [<000000008ed830df>] kernfs_fop_write+0x198/0x458 [<0000000072b9ad06>] __vfs_write+0x50/0x210 [<00000000377d7469>] vfs_write+0xe4/0x1a8 [<00000000c3fc594e>] ksys_write+0x78/0x144 [<000000009aef6f4b>] __arm64_sys_write+0x1c/0x28 [<0000000003496a98>] el0_svc_common+0xc8/0x22c [<00000000ea3fe7a3>] el0_svc_compat_handler+0x1c/0x28 [<00000000d1a85a4e>] el0_svc_compat+0x8/0x24 Signed-off-by: Mark-PK Tsai --- drivers/remoteproc/remoteproc_core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index c510125769b9..8e28290eefa9 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -461,6 +461,7 @@ static void rproc_rvdev_release(struct device *dev) struct rproc_vdev *rvdev = container_of(dev, struct rproc_vdev, dev); of_reserved_mem_device_release(dev); + dma_release_coherent_memory(dev); kfree(rvdev); }