1 /*
2  * QTest fuzzer-generated testcase for megasas device
3  *
4  * Copyright (c) 2020 Li Qiang <liq3ea@gmail.com>
5  *
6  * This work is licensed under the terms of the GNU GPL, version 2 or later.
7  * See the COPYING file in the top-level directory.
8  */
9 
10 #include "qemu/osdep.h"
11 
12 #include "libqtest.h"
13 
14 /*
15  * This used to trigger the assert in scsi_dma_complete
16  * https://bugs.launchpad.net/qemu/+bug/1878263
17  */
18 static void test_lp1878263_megasas_zero_iov_cnt(void)
19 {
20     QTestState *s;
21 
22     s = qtest_init("-nographic -monitor none -serial none "
23                    "-M q35 -device megasas -device scsi-cd,drive=null0 "
24                    "-blockdev driver=null-co,read-zeroes=on,node-name=null0");
25     qtest_outl(s, 0xcf8, 0x80001818);
26     qtest_outl(s, 0xcfc, 0xc101);
27     qtest_outl(s, 0xcf8, 0x8000181c);
28     qtest_outl(s, 0xcf8, 0x80001804);
29     qtest_outw(s, 0xcfc, 0x7);
30     qtest_outl(s, 0xcf8, 0x8000186a);
31     qtest_writeb(s, 0x14, 0xfe);
32     qtest_writeb(s, 0x0, 0x02);
33     qtest_outb(s, 0xc1c0, 0x17);
34     qtest_quit(s);
35 }
36 
37 /*
38  * Overflow SGL buffer.
39  * https://gitlab.com/qemu-project/qemu/-/issues/521
40  */
41 static void test_gitlab_issue521_megasas_sgl_ovf(void)
42 {
43     QTestState *s = qtest_init("-m 32M -machine q35 "
44                                "-nodefaults -device megasas "
45                                "-device scsi-cd,drive=null0 "
46                                "-blockdev "
47                                "driver=null-co,read-zeroes=on,node-name=null0");
48     qtest_outl(s, 0xcf8, 0x80000818);
49     qtest_outl(s, 0xcfc, 0xc000);
50     qtest_outl(s, 0xcf8, 0x80000804);
51     qtest_outw(s, 0xcfc, 0x05);
52     qtest_bufwrite(s, 0x0, "\x01", 0x1);
53     qtest_bufwrite(s, 0x7, "\x01", 0x1);
54     qtest_bufwrite(s, 0x10, "\x02", 0x1);
55     qtest_bufwrite(s, 0x16, "\x01", 0x1);
56     qtest_bufwrite(s, 0x28, "\x01", 0x1);
57     qtest_bufwrite(s, 0x33, "\x01", 0x1);
58     qtest_outb(s, 0xc040, 0x0);
59     qtest_outb(s, 0xc040, 0x20);
60     qtest_outl(s, 0xc040, 0x20000000);
61     qtest_outb(s, 0xc040, 0x20);
62     qtest_quit(s);
63 }
64 
65 int main(int argc, char **argv)
66 {
67     g_test_init(&argc, &argv, NULL);
68 
69     qtest_add_func("fuzz/test_lp1878263_megasas_zero_iov_cnt",
70                    test_lp1878263_megasas_zero_iov_cnt);
71     qtest_add_func("fuzz/gitlab_issue521_megasas_sgl_ovf",
72                    test_gitlab_issue521_megasas_sgl_ovf);
73 
74     return g_test_run();
75 }
76