1 // SPDX-License-Identifier: GPL-2.0-or-later
2
3 #include <errno.h>
4 #include <fcntl.h>
5 #include <signal.h>
6 #include <stdio.h>
7 #include <string.h>
8 #include <sys/ioctl.h>
9 #include <sys/mman.h>
10 #include <sys/stat.h>
11 #include <sys/types.h>
12 #include <unistd.h>
13
14 #include "vas-api.h"
15 #include "utils.h"
16
17 static bool faulted;
18
19 static void sigbus_handler(int n, siginfo_t *info, void *ctxt_v)
20 {
21 ucontext_t *ctxt = (ucontext_t *)ctxt_v;
22 struct pt_regs *regs = ctxt->uc_mcontext.regs;
23
24 faulted = true;
25 regs->nip += 4;
26 }
27
28 static int test_ra_error(void)
29 {
30 struct vas_tx_win_open_attr attr;
31 int fd, *paste_addr;
32 char *devname = "/dev/crypto/nx-gzip";
33 struct sigaction act = {
34 .sa_sigaction = sigbus_handler,
35 .sa_flags = SA_SIGINFO,
36 };
37
38 memset(&attr, 0, sizeof(attr));
39 attr.version = 1;
40 attr.vas_id = 0;
41
42 SKIP_IF(access(devname, F_OK));
43
44 fd = open(devname, O_RDWR);
45 FAIL_IF(fd < 0);
46 FAIL_IF(ioctl(fd, VAS_TX_WIN_OPEN, &attr) < 0);
47 FAIL_IF(sigaction(SIGBUS, &act, NULL) != 0);
48
49 paste_addr = mmap(NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0ULL);
50
51 /* The following assignment triggers exception */
52 mb();
53 *paste_addr = 1;
54 mb();
55
56 FAIL_IF(!faulted);
57
58 return 0;
59 }
60
61 int main(void)
62 {
63 return test_harness(test_ra_error, "inject-ra-err");
64 }
65
66
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