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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 4BE76C3600C for ; Thu, 3 Apr 2025 19:16:32 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CA6E910EAC8; Thu, 3 Apr 2025 19:16:31 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="SrvYb5aC"; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7077610EABF; Thu, 3 Apr 2025 19:16:30 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id E40015C2BCA; Thu, 3 Apr 2025 19:14:12 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8ACAC4CEE3; Thu, 3 Apr 2025 19:16:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1743707789; bh=SAaVT5xL1/xkJan04m2q6BElqCElm+ckUg/oWX730+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SrvYb5aCOVUnLjXQVtpVFMYgzKYptr3A0pSur9/eO3s4gzBslkKK/s/qW0GEy9ooY KamXqvFpIzpseqiGDzWR6Qbz0vHoxsNesAhu0D4vtcAH5lNmubCQsMEY8mEiJ7gG3g jQZemap45+rWrINZ9/jFsATpR+0/CaY6qtampj61bkxarvzbMTm8XKb+m+rAFKvjhP 6NSAx6fXcCDwTgtvFVxA7uOTrPApw5MEHA1rzOckea2KDDMOClXfETvHfAL6TKpsCO Mh+vINDvV8+ftzXkBGvzlKZHGteg22wI32B+PO6uzs6r8uxLFmRUPZjuu+oiBZLj+v mtdMxGsCkuWGw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wentao Liang , Alex Deucher , Sasha Levin , kenneth.feng@amd.com, christian.koenig@amd.com, airlied@gmail.com, simona@ffwll.ch, sunil.khatri@amd.com, boyuan.zhang@amd.com, Jun.Ma2@amd.com, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 6.13 26/37] drm/amdgpu: handle amdgpu_cgs_create_device() errors in amd_powerplay_create() Date: Thu, 3 Apr 2025 15:15:02 -0400 Message-Id: <20250403191513.2680235-26-sashal@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250403191513.2680235-1-sashal@kernel.org> References: <20250403191513.2680235-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 6.13.9 Content-Transfer-Encoding: 8bit X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Wentao Liang [ Upstream commit 1435e895d4fc967d64e9f5bf81e992ac32f5ac76 ] Add error handling to propagate amdgpu_cgs_create_device() failures to the caller. When amdgpu_cgs_create_device() fails, release hwmgr and return -ENOMEM to prevent null pointer dereference. [v1]->[v2]: Change error code from -EINVAL to -ENOMEM. Free hwmgr. Signed-off-by: Wentao Liang Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c index 26624a716fc60..f8434158a4022 100644 --- a/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c +++ b/drivers/gpu/drm/amd/pm/powerplay/amd_powerplay.c @@ -51,6 +51,11 @@ static int amd_powerplay_create(struct amdgpu_device *adev) hwmgr->adev = adev; hwmgr->not_vf = !amdgpu_sriov_vf(adev); hwmgr->device = amdgpu_cgs_create_device(adev); + if (!hwmgr->device) { + kfree(hwmgr); + return -ENOMEM; + } + mutex_init(&hwmgr->msg_lock); hwmgr->chip_family = adev->family; hwmgr->chip_id = adev->asic_type; -- 2.39.5