From patchwork Wed Dec 4 21:31:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Igor Druzhinin X-Patchwork-Id: 11273631 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B99D8138C for ; Wed, 4 Dec 2019 21:32:52 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8AC03206DF for ; Wed, 4 Dec 2019 21:32:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="A5SBxACd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8AC03206DF Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iccF5-0000zX-Et; Wed, 04 Dec 2019 21:31:27 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iccF4-0000zS-Hz for xen-devel@lists.xenproject.org; Wed, 04 Dec 2019 21:31:26 +0000 X-Inumbo-ID: 6c68c210-16dd-11ea-aea8-bc764e2007e4 Received: from esa2.hc3370-68.iphmx.com (unknown [216.71.145.153]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 6c68c210-16dd-11ea-aea8-bc764e2007e4; Wed, 04 Dec 2019 21:31:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1575495086; h=from:to:cc:subject:date:message-id:mime-version; bh=rezTkruEAo6SunEuMikDERnfLWWiO86RYZqNf07RmZU=; b=A5SBxACdvyySYCtrPCi15p2lwtIH5f+BdciLd3YvmSmHNeQGzXNhmHhK pqGTEOci05vGRqoHxg3mXA6TOWtEwKHobCYSdZNR7O0knlZnapj6P0dpd oRKd8dJOvH8wcjMK0XUB4Wr8ccaY0VH2AbJEZDWZUX6R2FNF6JYR3i7oe k=; Authentication-Results: esa2.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none; spf=None smtp.pra=igor.druzhinin@citrix.com; spf=Pass smtp.mailfrom=igor.druzhinin@citrix.com; spf=None smtp.helo=postmaster@mail.citrix.com Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender authenticity information available from domain of igor.druzhinin@citrix.com) identity=pra; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="igor.druzhinin@citrix.com"; x-sender="igor.druzhinin@citrix.com"; x-conformance=sidf_compatible Received-SPF: Pass (esa2.hc3370-68.iphmx.com: domain of igor.druzhinin@citrix.com designates 162.221.158.21 as permitted sender) identity=mailfrom; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="igor.druzhinin@citrix.com"; x-sender="igor.druzhinin@citrix.com"; x-conformance=sidf_compatible; x-record-type="v=spf1"; x-record-text="v=spf1 ip4:209.167.231.154 ip4:178.63.86.133 ip4:195.66.111.40/30 ip4:85.115.9.32/28 ip4:199.102.83.4 ip4:192.28.146.160 ip4:192.28.146.107 ip4:216.52.6.88 ip4:216.52.6.188 ip4:162.221.158.21 ip4:162.221.156.83 ip4:168.245.78.127 ~all" Received-SPF: None (esa2.hc3370-68.iphmx.com: no sender authenticity information available from domain of postmaster@mail.citrix.com) identity=helo; client-ip=162.221.158.21; receiver=esa2.hc3370-68.iphmx.com; envelope-from="igor.druzhinin@citrix.com"; x-sender="postmaster@mail.citrix.com"; x-conformance=sidf_compatible IronPort-SDR: wF9mvyGaIv6aAUlkUJZ6isM64UHSVhAfQwZOM7/Q+7fowvJPxkFo1EgR2yaWBtNII2AA8G4PIJ KHoe1G+PiFA27fIz7UHXDf93aPamCHs9nYgsYIbdKkI5bqvyxiXeUDVDFwmhAbafhYaTsvFD+R n7rWJy5fvmdacEqmpw4xHG2P1GLIgBPMPEwfaS3J1andjxmNxFLw3ULT5f57O4/0yv7CwlB+Th rLl5qXV2cn9DAc8ZXfBKFQGrw17cXY45bROb1/LAkMV5i3nY9zXg6yF1EDFTu8AzqL+2/oOXue pMs= X-SBRS: 2.7 X-MesageID: 9217944 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.69,278,1571716800"; d="scan'208";a="9217944" From: Igor Druzhinin To: Date: Wed, 4 Dec 2019 21:31:20 +0000 Message-ID: <1575495080-27656-1-git-send-email-igor.druzhinin@citrix.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Subject: [Xen-devel] [PATCH] passthrough: add missed pcidevs_unlock following c/s cd7dedad820 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: linux@eikelenboom.it, jbeulich@suse.com, Igor Druzhinin Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" The locking responsibilities have changed and a premature break in this section now causes the following assertion: Assertion '!preempt_count()' failed at preempt.c:36 Reported-by: Sander Eikelenboom Signed-off-by: Igor Druzhinin --- xen/drivers/passthrough/pci.c | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/drivers/passthrough/pci.c b/xen/drivers/passthrough/pci.c index ced0c28..2593fe4 100644 --- a/xen/drivers/passthrough/pci.c +++ b/xen/drivers/passthrough/pci.c @@ -1705,6 +1705,7 @@ int iommu_do_pci_domctl( seg, bus, PCI_SLOT(devfn), PCI_FUNC(devfn)); ret = -EINVAL; } + pcidevs_unlock(); break; } else if ( !ret )