From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EA62CC433E0 for ; Thu, 18 Jun 2020 01:56:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD1D72192A for ; Thu, 18 Jun 2020 01:56:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592445366; bh=3jmixMD1aqvVxMgyqA6NUesXMHCJpUlIdFaZ9yIXDD4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=SVbcO+ofrIxp4R5UhI0ztef2QmwWu4JUIGkrWo8E5Ooek9DKj5yCBThiheG8BETFx zq7vmoEHV6/d0I8vs2Rll2ly2Y8hv6a7PD1TriGlL+46HIfjJ/lw3sFV0VYSY9oKzd v09SN/3dGPpfzRyOaG4RWnP/h0BBhwWWjq/0Pvo4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731452AbgFRBZe (ORCPT ); Wed, 17 Jun 2020 21:25:34 -0400 Received: from mail.kernel.org ([198.145.29.99]:55510 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730743AbgFRBW3 (ORCPT ); Wed, 17 Jun 2020 21:22:29 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D8AAD20776; Thu, 18 Jun 2020 01:22:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443348; bh=3jmixMD1aqvVxMgyqA6NUesXMHCJpUlIdFaZ9yIXDD4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=boZqIAPoA0yDcrnkeP4+kIMPccYJax72fdyraO2NmBqKZ66OSt80B31gToqnsZ7C6 MkxD0RtsktIuOPZdvlMU0EBg3adMNDFuK5f+R9rgO+h295WAiuzEi/4sz3UG14+qmq d+FuuubJLxIUMgFEo2rMOk6Y8Ctw9I/HTXlaQ5ho= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alex Elder , Mathieu Poirier , Suman Anna , Bjorn Andersson , Sasha Levin , linux-remoteproc@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 008/172] remoteproc: Fix IDR initialisation in rproc_alloc() Date: Wed, 17 Jun 2020 21:19:34 -0400 Message-Id: <20200618012218.607130-8-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012218.607130-1-sashal@kernel.org> References: <20200618012218.607130-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Alex Elder [ Upstream commit 6442df49400b466431979e7634849a464a5f1861 ] If ida_simple_get() returns an error when called in rproc_alloc(), put_device() is called to clean things up. By this time the rproc device type has been assigned, with rproc_type_release() as the release function. The first thing rproc_type_release() does is call: idr_destroy(&rproc->notifyids); But at the time the ida_simple_get() call is made, the notifyids field in the remoteproc structure has not been initialized. I'm not actually sure this case causes an observable problem, but it's incorrect. Fix this by initializing the notifyids field before calling ida_simple_get() in rproc_alloc(). Fixes: b5ab5e24e960 ("remoteproc: maintain a generic child device for each rproc") Signed-off-by: Alex Elder Reviewed-by: Mathieu Poirier Reviewed-by: Suman Anna Reviewed-by: Bjorn Andersson Link: https://lore.kernel.org/r/20200415204858.2448-2-mathieu.poirier@linaro.org Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- drivers/remoteproc/remoteproc_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index d5ff272fde34..e48069db1703 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1598,6 +1598,7 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, rproc->dev.type = &rproc_type; rproc->dev.class = &rproc_class; rproc->dev.driver_data = rproc; + idr_init(&rproc->notifyids); /* Assign a unique device index and name */ rproc->index = ida_simple_get(&rproc_dev_index, 0, 0, GFP_KERNEL); @@ -1622,8 +1623,6 @@ struct rproc *rproc_alloc(struct device *dev, const char *name, mutex_init(&rproc->lock); - idr_init(&rproc->notifyids); - INIT_LIST_HEAD(&rproc->carveouts); INIT_LIST_HEAD(&rproc->mappings); INIT_LIST_HEAD(&rproc->traces); -- 2.25.1