diff options
Diffstat (limited to 'drivers/s390/char/vmcp.c')
| -rw-r--r-- | drivers/s390/char/vmcp.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c index 0fdedadff7bc..2a67b496a9e2 100644 --- a/drivers/s390/char/vmcp.c +++ b/drivers/s390/char/vmcp.c @@ -88,14 +88,9 @@ vmcp_write(struct file *file, const char __user *buff, size_t count, if (count > 240) return -EINVAL; - cmd = kmalloc(count + 1, GFP_KERNEL); - if (!cmd) - return -ENOMEM; - if (copy_from_user(cmd, buff, count)) { - kfree(cmd); - return -EFAULT; - } - cmd[count] = '\0'; + cmd = memdup_user_nul(buff, count); + if (IS_ERR(cmd)) + return PTR_ERR(cmd); session = file->private_data; if (mutex_lock_interruptible(&session->mutex)) { kfree(cmd); |