qemu/tests/qtest/fuzz-megasas-test.c

/*
 * QTest fuzzer-generated testcase for megasas device
 *
 * Copyright (c) 2020 Li Qiang <liq3ea@gmail.com>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#include "qemu/osdep.h"

#include "libqtest.h"

/*
 * This used to trigger the assert in scsi_dma_complete
 * https://bugs.launchpad.net/qemu/+bug/1878263
 */
static void test_lp1878263_megasas_zero_iov_cnt(void)
{
    QTestState *s;

    s = qtest_init("-nographic -monitor none -serial none "
                   "-M q35 -device megasas -device scsi-cd,drive=null0 "
                   "-blockdev driver=null-co,read-zeroes=on,node-name=null0");
    qtest_outl(s, 0xcf8, 0x80001818);
    qtest_outl(s, 0xcfc, 0xc101);
    qtest_outl(s, 0xcf8, 0x8000181c);
    qtest_outl(s, 0xcf8, 0x80001804);
    qtest_outw(s, 0xcfc, 0x7);
    qtest_outl(s, 0xcf8, 0x8000186a);
    qtest_writeb(s, 0x14, 0xfe);
    qtest_writeb(s, 0x0, 0x02);
    qtest_outb(s, 0xc1c0, 0x17);
    qtest_quit(s);
}

/*
 * Overflow SGL buffer.
 * https://gitlab.com/qemu-project/qemu/-/issues/521
 */
static void test_gitlab_issue521_megasas_sgl_ovf(void)
{
    QTestState *s = qtest_init("-display none -m 32M -machine q35 "
                               "-nodefaults -device megasas "
                               "-device scsi-cd,drive=null0 "
                               "-blockdev "
                               "driver=null-co,read-zeroes=on,node-name=null0");
    qtest_outl(s, 0xcf8, 0x80000818);
    qtest_outl(s, 0xcfc, 0xc000);
    qtest_outl(s, 0xcf8, 0x80000804);
    qtest_outw(s, 0xcfc, 0x05);
    qtest_bufwrite(s, 0x0, "\x01", 0x1);
    qtest_bufwrite(s, 0x7, "\x01", 0x1);
    qtest_bufwrite(s, 0x10, "\x02", 0x1);
    qtest_bufwrite(s, 0x16, "\x01", 0x1);
    qtest_bufwrite(s, 0x28, "\x01", 0x1);
    qtest_bufwrite(s, 0x33, "\x01", 0x1);
    qtest_outb(s, 0xc040, 0x0);
    qtest_outb(s, 0xc040, 0x20);
    qtest_outl(s, 0xc040, 0x20000000);
    qtest_outb(s, 0xc040, 0x20);
    qtest_quit(s);
}

int main(int argc, char **argv)
{
    g_test_init(&argc, &argv, NULL);

    qtest_add_func("fuzz/test_lp1878263_megasas_zero_iov_cnt",
                   test_lp1878263_megasas_zero_iov_cnt);
    qtest_add_func("fuzz/gitlab_issue521_megasas_sgl_ovf",
                   test_gitlab_issue521_megasas_sgl_ovf);

    return g_test_run();
}