diff options
| -rw-r--r-- | drivers/s390/char/vmcp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index 98749fa817da..66d5e9f83e0d 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -150,7 +150,9 @@ static long vmcp_ioctl(struct file *file, unsigned int cmd, unsigned long arg) get_order(session->bufsize)); session->response=NULL; temp = get_user(session->bufsize, argp); - if (get_order(session->bufsize) > 8) { + if (temp) + session->bufsize = PAGE_SIZE; + if (!session->bufsize || get_order(session->bufsize) > 8) { session->bufsize = PAGE_SIZE; temp = -EINVAL; } |