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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CBB07C4332F for ; Tue, 16 Nov 2021 00:31:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BE1DF6115B for ; Tue, 16 Nov 2021 00:31:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348950AbhKPAeZ (ORCPT ); Mon, 15 Nov 2021 19:34:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:45398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343908AbhKOTWY (ORCPT ); Mon, 15 Nov 2021 14:22:24 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 4A3DD635FC; Mon, 15 Nov 2021 18:48:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637002105; bh=6d+HztCoVDCFI/Ahw2vaIpDRzGSSkNZqgNNfuZ7ezJg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HkR1GM7bnHxy3e/NlUD9L9zZW9WjSoi2NfRIQDa+iOkTDedml/hhIp45GXVLNYcwu KNIgAT+u2Oa6Ye0ChOxXC6mvZvOobzfTC0cAcPa2SS8sOhrfKAwp1IfzAU2X+KeAE1 FrdAYlcL7Ezuvqs5y+NK9gBsIWnUvBdenoar6HCM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Rob Clark , Sasha Levin Subject: [PATCH 5.15 440/917] drm/msm: fix potential NULL dereference in cleanup Date: Mon, 15 Nov 2021 17:58:55 +0100 Message-Id: <20211115165443.703293448@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211115165428.722074685@linuxfoundation.org> References: <20211115165428.722074685@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dan Carpenter [ Upstream commit 027d052a36e56789a2134772bacb4fd0860f03a3 ] The "msm_obj->node" list needs to be initialized earlier so that the list_del() in msm_gem_free_object() doesn't experience a NULL pointer dereference. Fixes: 6ed0897cd800 ("drm/msm: Fix debugfs deadlock") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/20211013081133.GF6010@kili Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/msm_gem.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index 22308a1b66fc3..fd398a4eaf46e 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -1132,6 +1132,7 @@ static int msm_gem_new_impl(struct drm_device *dev, msm_obj->flags = flags; msm_obj->madv = MSM_MADV_WILLNEED; + INIT_LIST_HEAD(&msm_obj->node); INIT_LIST_HEAD(&msm_obj->vmas); *obj = &msm_obj->base; -- 2.33.0