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b=eFAniVBfj/TDzdwxffO343zVk5sQ6qY3zAbpYc0t7Xxc1xLocPMu5kKZuWjWDymUI9Hgezo4hdH22/oyarTCOw9YDWNbmwSb4VQPs9beBzoqe3WJ6ZeMbtu48Ydp0XdfMh1zCIpoFmc7iqO+x1XXJfpB6RhgSUL6VKDNykgar4WUI4qM2bFxP9FtW/ai3LJzTnmkestcRlVCWZWYEMFw0t4hnS84qkDMowWUkPj0C8Z/91AMNFgvUshGBGCLr6fQXNZQafaCtNiiIsT+06BR2yvG5zGuxN/rDonQ+xKws4EXkps9FBc5vZubZbY70dumNX7r+NJFENfv/dIyoHEtMA== From: John Levon To: qemu-devel@nongnu.org Cc: Thanos Makatos , Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , John Levon , Mark Cave-Ayland Subject: [PATCH v3 2/4] hw/vfio: fix region fd initialization Date: Tue, 15 Jul 2025 13:59:52 +0200 Message-ID: <20250715115954.515819-3-john.levon@nutanix.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250715115954.515819-1-john.levon@nutanix.com> References: <20250715115954.515819-1-john.levon@nutanix.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM8P190CA0024.EURP190.PROD.OUTLOOK.COM (2603:10a6:20b:219::29) To CH2PR02MB6760.namprd02.prod.outlook.com (2603:10b6:610:7f::9) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CH2PR02MB6760:EE_|DS0PR02MB10710:EE_ X-MS-Office365-Filtering-Correlation-Id: 475e4550-47ba-4130-facd-08ddc39720bc x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.155.12; envelope-from=john.levon@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @nutanix.com) X-ZM-MESSAGEID: 1752580888737116600 We were not initializing the region fd array to -1, so we would accidentally try to close(0) on cleanup for any region that is not referenced. Fixes: 95cdb024 ("vfio: add region info cache") Signed-off-by: John Levon Reviewed-by: Mark Cave-Ayland Reviewed-by: C=C3=A9dric Le Goater --- hw/vfio/device.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/hw/vfio/device.c b/hw/vfio/device.c index 96cf21462c..52a1996dc4 100644 --- a/hw/vfio/device.c +++ b/hw/vfio/device.c @@ -463,6 +463,8 @@ void vfio_device_detach(VFIODevice *vbasedev) void vfio_device_prepare(VFIODevice *vbasedev, VFIOContainerBase *bcontain= er, struct vfio_device_info *info) { + int i; + vbasedev->num_irqs =3D info->num_irqs; vbasedev->num_regions =3D info->num_regions; vbasedev->flags =3D info->flags; @@ -477,6 +479,9 @@ void vfio_device_prepare(VFIODevice *vbasedev, VFIOCont= ainerBase *bcontainer, vbasedev->num_regions); if (vbasedev->use_region_fds) { vbasedev->region_fds =3D g_new0(int, vbasedev->num_regions); + for (i =3D 0; i < vbasedev->num_regions; i++) { + vbasedev->region_fds[i] =3D -1; + } } } =20 @@ -489,7 +494,6 @@ void vfio_device_unprepare(VFIODevice *vbasedev) if (vbasedev->region_fds !=3D NULL && vbasedev->region_fds[i] !=3D= -1) { close(vbasedev->region_fds[i]); } - } =20 g_clear_pointer(&vbasedev->reginfo, g_free); --=20 2.43.0