t/io_uring: ensure that nthreads is > 0

Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/t/io_uring.c b/t/io_uring.c
index 23c9d60677a0c44782cd77a4a581669beed3dd2e..c9ca3e9d23d6f2638b08b146e707a1527de152b5 100644 (file)
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -598,6 +598,10 @@ int main(int argc, char *argv[])
                        break;
                case 'n':
                        nthreads = atoi(optarg);
+                       if (!nthreads) {
+                               printf("Threads must be non-zero\n");
+                               usage(argv[0], 1);
+                       }
                        break;
                case 'h':
                case '?':
@@ -623,7 +627,7 @@ int main(int argc, char *argv[])
        i = optind;
        nfiles = argc - i;
        if (!nfiles) {
-               printf("no files specified\n");
+               printf("No files specified\n");
                usage(argv[0], 1);
        }
        threads_per_f = nthreads / nfiles;