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ca1ef1e62e
This patch is to reduce the number of Valgrind report messages about
using uninitialized memory with the null-co driver. It helps to filter
real memory issues and is the same work done for the iotests with the
commit ID a6862418fe.
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Message-Id: <1564404360-733987-1-git-send-email-andrey.shinkevich@virtuozzo.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
89 lines
2.4 KiB
C
89 lines
2.4 KiB
C
/*
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* QTest testcase for NVMe
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*
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* Copyright (c) 2014 SUSE LINUX Products GmbH
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/module.h"
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#include "qemu/units.h"
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#include "libqtest.h"
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#include "libqos/qgraph.h"
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#include "libqos/pci.h"
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typedef struct QNvme QNvme;
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struct QNvme {
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QOSGraphObject obj;
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QPCIDevice dev;
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};
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static void *nvme_get_driver(void *obj, const char *interface)
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{
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QNvme *nvme = obj;
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if (!g_strcmp0(interface, "pci-device")) {
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return &nvme->dev;
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}
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fprintf(stderr, "%s not present in nvme\n", interface);
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g_assert_not_reached();
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}
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static void *nvme_create(void *pci_bus, QGuestAllocator *alloc, void *addr)
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{
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QNvme *nvme = g_new0(QNvme, 1);
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QPCIBus *bus = pci_bus;
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qpci_device_init(&nvme->dev, bus, addr);
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nvme->obj.get_driver = nvme_get_driver;
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return &nvme->obj;
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}
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/* This used to cause a NULL pointer dereference. */
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static void nvmetest_oob_cmb_test(void *obj, void *data, QGuestAllocator *alloc)
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{
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const int cmb_bar_size = 2 * MiB;
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QNvme *nvme = obj;
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QPCIDevice *pdev = &nvme->dev;
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QPCIBar bar;
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qpci_device_enable(pdev);
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bar = qpci_iomap(pdev, 2, NULL);
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qpci_io_writel(pdev, bar, 0, 0xccbbaa99);
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g_assert_cmpint(qpci_io_readb(pdev, bar, 0), ==, 0x99);
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g_assert_cmpint(qpci_io_readw(pdev, bar, 0), ==, 0xaa99);
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/* Test partially out-of-bounds accesses. */
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qpci_io_writel(pdev, bar, cmb_bar_size - 1, 0x44332211);
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g_assert_cmpint(qpci_io_readb(pdev, bar, cmb_bar_size - 1), ==, 0x11);
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g_assert_cmpint(qpci_io_readw(pdev, bar, cmb_bar_size - 1), !=, 0x2211);
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g_assert_cmpint(qpci_io_readl(pdev, bar, cmb_bar_size - 1), !=, 0x44332211);
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}
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static void nvme_register_nodes(void)
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{
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QOSGraphEdgeOptions opts = {
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.extra_device_opts = "addr=04.0,drive=drv0,serial=foo",
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.before_cmd_line = "-drive id=drv0,if=none,file=null-co://,"
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"file.read-zeroes=on,format=raw",
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};
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add_qpci_address(&opts, &(QPCIAddress) { .devfn = QPCI_DEVFN(4, 0) });
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qos_node_create_driver("nvme", nvme_create);
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qos_node_consumes("nvme", "pci-bus", &opts);
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qos_node_produces("nvme", "pci-device");
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qos_add_test("oob-cmb-access", "nvme", nvmetest_oob_cmb_test, &(QOSGraphTestOptions) {
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.edge.extra_device_opts = "cmb_size_mb=2"
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});
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}
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libqos_init(nvme_register_nodes);
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