From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D555E383BA; Mon, 1 Apr 2024 16:00:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711987213; cv=none; b=VtxlfJGiv4m7oRc7aykKHcsDen9PONiVI1yR5BTl+CI5cGcVHqvQ3XuVNZJh5SiKUYX8jo5hojf1MaW2B18RqSG4yPXjTT0mRZg00MgpluFzbVbE6BBD7hg1yKvfuw3J94gKNOMUnbf4zNsOlbBT3T5EQfNPBh4teKZw51jWFaw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711987213; c=relaxed/simple; bh=eekFva2wKXS7yzevAD4aTEtWjOQ6Km1y047lvrv+szI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=GAGM0A8L4O+BGgx5wCNoNlf/4+IzwiNDuwvugxtwncO6Ugg0xsx6UMsFsnu9OXAssN/74ocgAkwDPOlQXFe63LUzu4VQayvBIA/QhPS47SQFon1uX6ewD1h2g0oDaaCNS3A9yViaRs9a4vmiMRZh0DxsyXjhS9mCgwY0+kucEPY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ZhSOTKdb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="ZhSOTKdb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5D5ECC433C7; Mon, 1 Apr 2024 16:00:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1711987213; bh=eekFva2wKXS7yzevAD4aTEtWjOQ6Km1y047lvrv+szI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZhSOTKdbwVDD6aFdZOdp3iEaH8zM+9ddH4qH1m8sXIWeHsF5NzMdpNd38awl61wvJ Xhut00Yug0KJ+2f6XD3X5DDsoutkAsX8TjK4ubTbM1pjcG24z0MLM9eCMeREVlJsqT bkHghXurxF8w+b0gVeeHP9JCNNYE3d1ykBtC5u5A= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mario Limonciello , Alex Deucher , Charlene Liu , Alex Hung , Allen Pan , Daniel Wheeler , Sasha Levin Subject: [PATCH 6.8 218/399] drm/amd/display: Add a dc_state NULL check in dc_state_release Date: Mon, 1 Apr 2024 17:43:04 +0200 Message-ID: <20240401152555.689253910@linuxfoundation.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240401152549.131030308@linuxfoundation.org> References: <20240401152549.131030308@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Allen Pan [ Upstream commit 334b56cea5d9df5989be6cf1a5898114fa70ad98 ] [How] Check wheather state is NULL before releasing it. Cc: Mario Limonciello Cc: Alex Deucher Cc: stable@vger.kernel.org Reviewed-by: Charlene Liu Acked-by: Alex Hung Signed-off-by: Allen Pan Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/display/dc/core/dc_state.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_state.c b/drivers/gpu/drm/amd/display/dc/core/dc_state.c index 180ac47868c22..5cc7f8da209c5 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_state.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_state.c @@ -334,7 +334,8 @@ static void dc_state_free(struct kref *kref) void dc_state_release(struct dc_state *state) { - kref_put(&state->refcount, dc_state_free); + if (state != NULL) + kref_put(&state->refcount, dc_state_free); } /* * dc_state_add_stream() - Add a new dc_stream_state to a dc_state. -- 2.43.0