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=unavailable 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 E663AC433E4 for ; Thu, 18 Jun 2020 01:54:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD22A2222A for ; Thu, 18 Jun 2020 01:54:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592445258; bh=PYgYh5EClCZLJSgI9EwuJGo8e/rRyeyZ+97SNn09/1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=uKYzx9Z0FVJVlk9z7ltlSnFFx1AIqJZ/DFGPRxv+spE6CtXB/a7Bm1HhR9GANfOcR AI6W6rOMs62jb2NjJMn/OeL1jV4HH57tMD8t6YC5Sz8nPcRIR9Zdm7mJvdKWd3PFPv tDzQNWiLbYgM5DOmTOQwv7gv1gy1D1Zj6eL+AkjU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727048AbgFRByH (ORCPT ); Wed, 17 Jun 2020 21:54:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:33446 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731599AbgFRB0I (ORCPT ); Wed, 17 Jun 2020 21:26:08 -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 9AE4021D7F; Thu, 18 Jun 2020 01:26:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592443568; bh=PYgYh5EClCZLJSgI9EwuJGo8e/rRyeyZ+97SNn09/1c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mcWiJ3z3tVo1uV5mmprDD8oBu+41zhigyxTU7GStXh5GFnOpNM1Z9jbMRIF1J9Ne4 zjHLOTWuWKtxwV8wE2UAQ75qWD/hv7cFQ4T0e5bwqaAxMBeq1gh965J5iv8uF/GAEg u/RuJw75UsBhHh5soCX7PtewYRz0oCLZAE/tUHZo= 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 4.14 006/108] remoteproc: Fix IDR initialisation in rproc_alloc() Date: Wed, 17 Jun 2020 21:24:18 -0400 Message-Id: <20200618012600.608744-6-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200618012600.608744-1-sashal@kernel.org> References: <20200618012600.608744-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@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 8f4fa1a52f05..d6372470e5be 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -1432,6 +1432,7 @@ 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); @@ -1450,8 +1451,6 @@ 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