From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753140AbcBWOAS (ORCPT ); Tue, 23 Feb 2016 09:00:18 -0500 Received: from mx1.redhat.com ([209.132.183.28]:37333 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751495AbcBWOAQ (ORCPT ); Tue, 23 Feb 2016 09:00:16 -0500 From: "Ewan D. Milne" To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: wuninsu@gmail.com, thenzl@redhat.com, sreekanth.reddy@avagotech.com, MPT-FusionLinux.pdl@avagotech.com, taesoo@gatech.edu, yeongjin.jang@gatech.edu, insu@gatech.edu, changwoo@gatech.edu Subject: [PATCH v3] mptbase: fixup error handling paths in mpt_attach() Date: Tue, 23 Feb 2016 09:00:12 -0500 Message-Id: <1456236012-27300-1-git-send-email-emilne@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Ewan D. Milne" mpt_attach() was not checking for the failure to create fw_event_q. Also, iounmap() was not being called in all error cases after ioremap() had been called by mpt_mapresources(). Reported-by: Insu Yun Reviewed-by: Tomas Henzl Signed-off-by: Ewan D. Milne --- drivers/message/fusion/mptbase.c | 40 +++++++++++++++++++++++++++++++++------- 1 file changed, 33 insertions(+), 7 deletions(-) diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c index 5dcc031..d3b130a 100644 --- a/drivers/message/fusion/mptbase.c +++ b/drivers/message/fusion/mptbase.c @@ -1801,8 +1801,7 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) ioc->pcidev = pdev; if (mpt_mapresources(ioc)) { - kfree(ioc); - return r; + goto out_free_ioc; } /* @@ -1871,9 +1870,8 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) if (!ioc->reset_work_q) { printk(MYIOC_s_ERR_FMT "Insufficient memory to add adapter!\n", ioc->name); - pci_release_selected_regions(pdev, ioc->bars); - kfree(ioc); - return -ENOMEM; + r = -ENOMEM; + goto out_unmap_resources; } dinitprintk(ioc, printk(MYIOC_s_INFO_FMT "facts @ %p, pfacts[0] @ %p\n", @@ -1995,16 +1993,27 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) spin_lock_init(&ioc->fw_event_lock); snprintf(ioc->fw_event_q_name, MPT_KOBJ_NAME_LEN, "mpt/%d", ioc->id); ioc->fw_event_q = create_singlethread_workqueue(ioc->fw_event_q_name); + if (!ioc->fw_event_q) { + printk(MYIOC_s_ERR_FMT "Insufficient memory to add adapter!\n", + ioc->name); + r = -ENOMEM; + goto out_remove_ioc; + } if ((r = mpt_do_ioc_recovery(ioc, MPT_HOSTEVENT_IOC_BRINGUP, CAN_SLEEP)) != 0){ printk(MYIOC_s_ERR_FMT "didn't initialize properly! (%d)\n", ioc->name, r); + destroy_workqueue(ioc->fw_event_q); + ioc->fw_event_q = NULL; + list_del(&ioc->list); if (ioc->alt_ioc) ioc->alt_ioc->alt_ioc = NULL; iounmap(ioc->memmap); + if (pci_is_enabled(pdev)) + pci_disable_device(pdev); if (r != -5) pci_release_selected_regions(pdev, ioc->bars); @@ -2012,7 +2021,6 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) ioc->reset_work_q = NULL; kfree(ioc); - pci_set_drvdata(pdev, NULL); return r; } @@ -2040,6 +2048,24 @@ mpt_attach(struct pci_dev *pdev, const struct pci_device_id *id) msecs_to_jiffies(MPT_POLLING_INTERVAL)); return 0; + +out_remove_ioc: + list_del(&ioc->list); + if (ioc->alt_ioc) + ioc->alt_ioc->alt_ioc = NULL; + + destroy_workqueue(ioc->reset_work_q); + ioc->reset_work_q = NULL; + +out_unmap_resources: + iounmap(ioc->memmap); + pci_disable_device(pdev); + pci_release_selected_regions(pdev, ioc->bars); + +out_free_ioc: + kfree(ioc); + + return r; } /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ @@ -6229,7 +6255,7 @@ mpt_get_manufacturing_pg_0(MPT_ADAPTER *ioc) memcpy(ioc->board_assembly, pbuf->BoardAssembly, sizeof(ioc->board_assembly)); memcpy(ioc->board_tracer, pbuf->BoardTracerNumber, sizeof(ioc->board_tracer)); - out: +out: if (pbuf) pci_free_consistent(ioc->pcidev, hdr.PageLength * 4, pbuf, buf_dma); -- 2.1.0