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[131.113.126.173]) by smtp.googlemail.com with ESMTPSA id z4sm3657280pfr.197.2020.09.08.09.00.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2020 09:00:18 -0700 (PDT) From: Keita Suzuki Cc: keitasuzuki.park@sslab.ics.keio.ac.jp, takafumi@sslab.ics.keio.ac.jp, Don Brace , "James E.J. Bottomley" , "Martin K. Petersen" , Kevin Barnett , Johannes Thumshirn , Scott Teel , esc.storagedev@microsemi.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] scsi: hpsa: fix memory leak in hpsa_init_one Date: Tue, 8 Sep 2020 15:59:56 +0000 Message-Id: <20200908155957.18921-1-keitasuzuki.park@sslab.ics.keio.ac.jp> X-Mailer: git-send-email 2.17.1 In-Reply-To: <9f7795b2-42c6-426f-12b6-9dfbd4fdb3a9@web.de> References: <9f7795b2-42c6-426f-12b6-9dfbd4fdb3a9@web.de> To: unlisted-recipients:; (no To-header on input) Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org When hpsa_scsi_add_host fails, h->lastlogicals is leaked since it lacks free in the error handler. Fix this by adding free when hpsa_scsi_add_host fails. This patch also renames the numbered labels to detailed names. Fixes: cf47723763a7 ("hpsa: correct initialization order issue") Signed-off-by: Keita Suzuki --- drivers/scsi/hpsa.c | 52 +++++++++++++++++++++++---------------------- 1 file changed, 27 insertions(+), 25 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 48d5da59262b..4911ca22efe4 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -8691,19 +8691,19 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) if (!h->lockup_detected) { dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n"); rc = -ENOMEM; - goto clean1; /* aer/h */ + goto out_destroy_workqueue; /* aer/h */ } set_lockup_detected_for_all_cpus(h, 0); rc = hpsa_pci_init(h); if (rc) - goto clean2; /* lu, aer/h */ + goto out_free_lockup_detected; /* lu, aer/h */ /* relies on h-> settings made by hpsa_pci_init, including * interrupt_mode h->intr */ rc = hpsa_scsi_host_alloc(h); if (rc) - goto clean2_5; /* pci, lu, aer/h */ + goto out_free_pci_init; /* pci, lu, aer/h */ sprintf(h->devname, HPSA "%d", h->scsi_host->host_no); h->ctlr = number_of_controllers; @@ -8719,7 +8719,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) dac = 0; } else { dev_err(&pdev->dev, "no suitable DMA available\n"); - goto clean3; /* shost, pci, lu, aer/h */ + goto out_scsi_host_put; /* shost, pci, lu, aer/h */ } } @@ -8728,13 +8728,13 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx); if (rc) - goto clean3; /* shost, pci, lu, aer/h */ + goto out_scsi_host_put; /* shost, pci, lu, aer/h */ rc = hpsa_alloc_cmd_pool(h); if (rc) - goto clean4; /* irq, shost, pci, lu, aer/h */ + goto out_free_irqs; /* irq, shost, pci, lu, aer/h */ rc = hpsa_alloc_sg_chain_blocks(h); if (rc) - goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ + goto out_free_cmd_pool; /* cmd, irq, shost, pci, lu, aer/h */ init_waitqueue_head(&h->scan_wait_queue); init_waitqueue_head(&h->event_sync_wait_queue); mutex_init(&h->reset_mutex); @@ -8747,25 +8747,25 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) spin_lock_init(&h->devlock); rc = hpsa_put_ctlr_into_performant_mode(h); if (rc) - goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */ + goto out_free_sg_chain_blocks; /* sg, cmd, irq, shost, pci, lu, aer/h */ /* create the resubmit workqueue */ h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan"); if (!h->rescan_ctlr_wq) { rc = -ENOMEM; - goto clean7; + goto out_free_performant_mode; } h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit"); if (!h->resubmit_wq) { rc = -ENOMEM; - goto clean7; /* aer/h */ + goto out_free_performant_mode; /* aer/h */ } h->monitor_ctlr_wq = hpsa_create_controller_wq(h, "monitor"); if (!h->monitor_ctlr_wq) { rc = -ENOMEM; - goto clean7; + goto out_free_performant_mode; } /* @@ -8795,20 +8795,20 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) * cannot goto clean7 or free_irqs will be called * again. Instead, do its work */ - hpsa_free_performant_mode(h); /* clean7 */ - hpsa_free_sg_chain_blocks(h); /* clean6 */ - hpsa_free_cmd_pool(h); /* clean5 */ + hpsa_free_performant_mode(h); /* out_free_performant_mode */ + hpsa_free_sg_chain_blocks(h); /* out_free_sg_chain_blocks */ + hpsa_free_cmd_pool(h); /* out_free_cmd_pool */ /* * skip hpsa_free_irqs(h) clean4 since that * was just called before request_irqs failed */ - goto clean3; + goto out_scsi_host_put; } rc = hpsa_kdump_soft_reset(h); if (rc) /* Neither hard nor soft reset worked, we're hosed. */ - goto clean7; + goto out_free_performant_mode; dev_info(&h->pdev->dev, "Board READY.\n"); dev_info(&h->pdev->dev, @@ -8854,7 +8854,7 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) /* hook into SCSI subsystem */ rc = hpsa_scsi_add_host(h); if (rc) - goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ + goto out_free_lastlogicals; /* ll, perf, sg, cmd, irq, shost, pci, lu, aer/h */ /* Monitor the controller for firmware lockups */ h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL; @@ -8869,26 +8869,28 @@ static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) HPSA_EVENT_MONITOR_INTERVAL); return 0; -clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ +out_free_lastlogicals: /* ll, perf, sg, cmd, irq, shost, pci, lu, aer/h */ + kfree(h->lastlogicals); +out_free_performant_mode: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ hpsa_free_performant_mode(h); h->access.set_intr_mask(h, HPSA_INTR_OFF); -clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */ +out_free_sg_chain_blocks: /* sg, cmd, irq, pci, lockup, wq/aer/h */ hpsa_free_sg_chain_blocks(h); -clean5: /* cmd, irq, shost, pci, lu, aer/h */ +out_free_cmd_pool: /* cmd, irq, shost, pci, lu, aer/h */ hpsa_free_cmd_pool(h); -clean4: /* irq, shost, pci, lu, aer/h */ +out_free_irqs: /* irq, shost, pci, lu, aer/h */ hpsa_free_irqs(h); -clean3: /* shost, pci, lu, aer/h */ +out_scsi_host_put: /* shost, pci, lu, aer/h */ scsi_host_put(h->scsi_host); h->scsi_host = NULL; -clean2_5: /* pci, lu, aer/h */ +out_free_pci_init: /* pci, lu, aer/h */ hpsa_free_pci_init(h); -clean2: /* lu, aer/h */ +out_free_lockup_detected: /* lu, aer/h */ if (h->lockup_detected) { free_percpu(h->lockup_detected); h->lockup_detected = NULL; } -clean1: /* wq/aer/h */ +out_destroy_workqueue: /* wq/aer/h */ if (h->resubmit_wq) { destroy_workqueue(h->resubmit_wq); h->resubmit_wq = NULL;