From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:40578) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hB444-0000wn-Ih for qemu-devel@nongnu.org; Mon, 01 Apr 2019 17:01:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hB442-00039p-Tp for qemu-devel@nongnu.org; Mon, 01 Apr 2019 17:01:56 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:59340) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hB442-00038g-G0 for qemu-devel@nongnu.org; Mon, 01 Apr 2019 17:01:54 -0400 Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x31L1ofw061892 for ; Mon, 1 Apr 2019 17:01:53 -0400 Received: from e17.ny.us.ibm.com (e17.ny.us.ibm.com [129.33.205.207]) by mx0a-001b2d01.pphosted.com with ESMTP id 2rksw4ryr6-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 01 Apr 2019 17:01:52 -0400 Received: from localhost by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 1 Apr 2019 22:01:50 +0100 From: Michael Roth Date: Mon, 1 Apr 2019 15:58:54 -0500 In-Reply-To: <20190401210011.16009-1-mdroth@linux.vnet.ibm.com> References: <20190401210011.16009-1-mdroth@linux.vnet.ibm.com> Message-Id: <20190401210011.16009-21-mdroth@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH 20/97] nvme: Fix nvme_init error handling List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Fam Zheng From: Fam Zheng It is wrong to leave this field as 1, as nvme_close() called in the error handling code in nvme_file_open() will use it and try to free s->queues again. Another problem is the cleaning ups are duplicated between the fail* labels of nvme_init() and nvme_file_open(), which calls nvme_close(). A third problem is nvme_close() misses g_free() and event_notifier_cleanup(). Fix all of them. Cc: qemu-stable@nongnu.org Signed-off-by: Fam Zheng Message-Id: <20180712025420.4932-1-famz@redhat.com> Reviewed-by: Stefan Hajnoczi Signed-off-by: Fam Zheng (cherry picked from commit 9582f357bb6f6573c9a452743d8f3ab41ba2e3fa) Signed-off-by: Michael Roth --- block/nvme.c | 37 ++++++++++++------------------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/block/nvme.c b/block/nvme.c index 6f71122bf5..37805e8890 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -569,13 +569,13 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, s->vfio = qemu_vfio_open_pci(device, errp); if (!s->vfio) { ret = -EINVAL; - goto fail; + goto out; } s->regs = qemu_vfio_pci_map_bar(s->vfio, 0, 0, NVME_BAR_SIZE, errp); if (!s->regs) { ret = -EINVAL; - goto fail; + goto out; } /* Perform initialize sequence as described in NVMe spec "7.6.1 @@ -585,7 +585,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, if (!(cap & (1ULL << 37))) { error_setg(errp, "Device doesn't support NVMe command set"); ret = -EINVAL; - goto fail; + goto out; } s->page_size = MAX(4096, 1 << (12 + ((cap >> 48) & 0xF))); @@ -603,7 +603,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, PRId64 " ms)", timeout_ms); ret = -ETIMEDOUT; - goto fail; + goto out; } } @@ -613,7 +613,7 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, s->queues[0] = nvme_create_queue_pair(bs, 0, NVME_QUEUE_SIZE, errp); if (!s->queues[0]) { ret = -EINVAL; - goto fail; + goto out; } QEMU_BUILD_BUG_ON(NVME_QUEUE_SIZE & 0xF000); s->regs->aqa = cpu_to_le32((NVME_QUEUE_SIZE << 16) | NVME_QUEUE_SIZE); @@ -633,14 +633,14 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, PRId64 " ms)", timeout_ms); ret = -ETIMEDOUT; - goto fail_queue; + goto out; } } ret = qemu_vfio_pci_init_irq(s->vfio, &s->irq_notifier, VFIO_PCI_MSIX_IRQ_INDEX, errp); if (ret) { - goto fail_queue; + goto out; } aio_set_event_notifier(bdrv_get_aio_context(bs), &s->irq_notifier, false, nvme_handle_event, nvme_poll_cb); @@ -649,30 +649,15 @@ static int nvme_init(BlockDriverState *bs, const char *device, int namespace, if (local_err) { error_propagate(errp, local_err); ret = -EIO; - goto fail_handler; + goto out; } /* Set up command queues. */ if (!nvme_add_io_queue(bs, errp)) { ret = -EIO; - goto fail_handler; } - return 0; - -fail_handler: - aio_set_event_notifier(bdrv_get_aio_context(bs), &s->irq_notifier, - false, NULL, NULL); -fail_queue: - nvme_free_queue_pair(bs, s->queues[0]); -fail: - g_free(s->queues); - if (s->regs) { - qemu_vfio_pci_unmap_bar(s->vfio, 0, (void *)s->regs, 0, NVME_BAR_SIZE); - } - if (s->vfio) { - qemu_vfio_close(s->vfio); - } - event_notifier_cleanup(&s->irq_notifier); +out: + /* Cleaning up is done in nvme_file_open() upon error. */ return ret; } @@ -739,8 +724,10 @@ static void nvme_close(BlockDriverState *bs) for (i = 0; i < s->nr_queues; ++i) { nvme_free_queue_pair(bs, s->queues[i]); } + g_free(s->queues); aio_set_event_notifier(bdrv_get_aio_context(bs), &s->irq_notifier, false, NULL, NULL); + event_notifier_cleanup(&s->irq_notifier); qemu_vfio_pci_unmap_bar(s->vfio, 0, (void *)s->regs, 0, NVME_BAR_SIZE); qemu_vfio_close(s->vfio); } -- 2.17.1