87e459a810
This ensures that the request is unref'ed properly, and avoids a segmentation fault in the new qtest testcase that is added. This is CVE-2017-9503. Reported-by: Zhangyanyu <zyy4013@stu.ouc.edu.cn> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*
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* QTest testcase for LSI MegaRAID
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*
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* Copyright (c) 2017 Red Hat Inc.
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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 "libqtest.h"
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#include "qemu/bswap.h"
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#include "libqos/libqos-pc.h"
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#include "libqos/libqos-spapr.h"
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static QOSState *qmegasas_start(const char *extra_opts)
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{
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const char *arch = qtest_get_arch();
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const char *cmd = "-drive id=hd0,if=none,file=null-co://,format=raw "
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"-device megasas,id=scsi0,addr=04.0 "
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"-device scsi-hd,bus=scsi0.0,drive=hd0 %s";
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if (strcmp(arch, "i386") == 0 || strcmp(arch, "x86_64") == 0) {
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return qtest_pc_boot(cmd, extra_opts ? : "");
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}
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g_printerr("virtio-scsi tests are only available on x86 or ppc64\n");
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exit(EXIT_FAILURE);
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}
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static void qmegasas_stop(QOSState *qs)
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{
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qtest_shutdown(qs);
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}
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/* Tests only initialization so far. TODO: Replace with functional tests */
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static void pci_nop(void)
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{
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QOSState *qs;
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qs = qmegasas_start(NULL);
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qmegasas_stop(qs);
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}
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/* This used to cause a NULL pointer dereference. */
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static void megasas_pd_get_info_fuzz(void)
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{
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QPCIDevice *dev;
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QOSState *qs;
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QPCIBar bar;
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uint32_t context[256];
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uint64_t context_pa;
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int i;
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qs = qmegasas_start(NULL);
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dev = qpci_device_find(qs->pcibus, QPCI_DEVFN(4,0));
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g_assert(dev != NULL);
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qpci_device_enable(dev);
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bar = qpci_iomap(dev, 0, NULL);
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memset(context, 0, sizeof(context));
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context[0] = cpu_to_le32(0x05050505);
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context[1] = cpu_to_le32(0x01010101);
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for (i = 2; i < ARRAY_SIZE(context); i++) {
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context[i] = cpu_to_le32(0x41414141);
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}
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context[6] = cpu_to_le32(0x02020000);
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context[7] = cpu_to_le32(0);
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context_pa = qmalloc(qs, sizeof(context));
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memwrite(context_pa, context, sizeof(context));
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qpci_io_writel(dev, bar, 0x40, context_pa);
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g_free(dev);
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qmegasas_stop(qs);
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}
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int main(int argc, char **argv)
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{
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g_test_init(&argc, &argv, NULL);
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qtest_add_func("/megasas/pci/nop", pci_nop);
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qtest_add_func("/megasas/dcmd/pd-get-info/fuzz", megasas_pd_get_info_fuzz);
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return g_test_run();
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}
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