t/io_uring: check read of home node file

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

diff --git a/t/io_uring.c b/t/io_uring.c
index ea70204340a45ff198c2d00238f3f83587e521d6..35bf195644e195d6cb28790fdee09cc58aba499b 100644 (file)
--- a/t/io_uring.c
+++ b/t/io_uring.c
@@ -641,14 +641,18 @@ static int detect_node(struct submitter *s, const char *name)
 #ifdef CONFIG_LIBNUMA
        const char *base = basename(name);
        char str[128];
-       int fd, node;
+       int ret, fd, node;
 
        sprintf(str, "/sys/block/%s/device/numa_node", base);
        fd = open(str, O_RDONLY);
        if (fd < 0)
                return -1;
 
-       read(fd, str, sizeof(str));
+       ret = read(fd, str, sizeof(str));
+       if (ret < 0) {
+               close(fd);
+               return -1;
+       }
        node = atoi(str);
        s->numa_node = node;
        close(fd);