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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 AA9EDC282CD for ; Mon, 28 Jan 2019 17:38:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D4C62147A for ; Mon, 28 Jan 2019 17:38:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548697137; bh=he+XGlfdgqq4Ybuv3P1ALs45Tvm32eylCYY77HUk9J4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=j+RGmGhphN0fE4/7oZlSUjlocS749pH6J9/p1JX57bBLrDjrDTMqpfqoSi+vVEj3I Qf0y+Pft8zbq2vX9TtmQDwnEL//+dSDK/gpnubzk2s/mqk6iDZ8VCbjd0QHKrupmTg CF6bSqUUJLdZhBI0bc14lY+9qcRwy8vh8UPLquio= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729541AbfA1Pxu (ORCPT ); Mon, 28 Jan 2019 10:53:50 -0500 Received: from mail.kernel.org ([198.145.29.99]:40078 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729517AbfA1Pxq (ORCPT ); Mon, 28 Jan 2019 10:53:46 -0500 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 4408621741; Mon, 28 Jan 2019 15:53:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548690825; bh=he+XGlfdgqq4Ybuv3P1ALs45Tvm32eylCYY77HUk9J4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0rxaZBBQ2KGBhypB3rn2ehcJ+bhegE6m9oB6IeWzOIK0l51pijzlAn1x6CeXoO0Pi g0Ig/Xv8FeAR7/93mWvUXLq8HmqbVH2vC29haaRw8MGU78d3u5CD2iMPTWcPxYsrBA A+485JAFx5U61qS4P1Dl2jNwZs840leU359BnDPw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Michael Mueller , Christian Borntraeger , Sasha Levin , linux-s390@vger.kernel.org Subject: [PATCH AUTOSEL 4.20 204/304] KVM: s390: unregister debug feature on failing arch init Date: Mon, 28 Jan 2019 10:42:01 -0500 Message-Id: <20190128154341.47195-204-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190128154341.47195-1-sashal@kernel.org> References: <20190128154341.47195-1-sashal@kernel.org> MIME-Version: 1.0 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: Michael Mueller [ Upstream commit 308c3e6673b012beecb96ef04cc65f4a0e7cdd99 ] Make sure the debug feature and its allocated resources get released upon unsuccessful architecture initialization. A related indication of the issue will be reported as kernel message. Signed-off-by: Michael Mueller Reviewed-by: Cornelia Huck Reviewed-by: Pierre Morel Reviewed-by: David Hildenbrand Message-Id: <20181130143215.69496-2-mimu@linux.ibm.com> Signed-off-by: Christian Borntraeger Signed-off-by: Sasha Levin --- arch/s390/kvm/kvm-s390.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index fe24150ff666..d8d8e0788157 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -417,19 +417,30 @@ static void kvm_s390_cpu_feat_init(void) int kvm_arch_init(void *opaque) { + int rc; + kvm_s390_dbf = debug_register("kvm-trace", 32, 1, 7 * sizeof(long)); if (!kvm_s390_dbf) return -ENOMEM; if (debug_register_view(kvm_s390_dbf, &debug_sprintf_view)) { - debug_unregister(kvm_s390_dbf); - return -ENOMEM; + rc = -ENOMEM; + goto out_debug_unreg; } kvm_s390_cpu_feat_init(); /* Register floating interrupt controller interface. */ - return kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC); + rc = kvm_register_device_ops(&kvm_flic_ops, KVM_DEV_TYPE_FLIC); + if (rc) { + pr_err("Failed to register FLIC rc=%d\n", rc); + goto out_debug_unreg; + } + return 0; + +out_debug_unreg: + debug_unregister(kvm_s390_dbf); + return rc; } void kvm_arch_exit(void) -- 2.19.1