diff options
| -rw-r--r-- | drivers/xen/privcmd.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 3b162c656205..ef6389580b8c 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -389,8 +389,11 @@ static long privcmd_ioctl_mmap_batch(void __user *udata, int version) state.err = err_array; ret = traverse_pages(m.num, sizeof(xen_pfn_t), &pagelist, mmap_return_errors_v1, &state); - } else if (version == 2) + } else if (version == 2) { ret = __copy_to_user(m.err, err_array, m.num * sizeof(int)); + if (ret) + ret = -EFAULT; + } /* If we have not had any EFAULT-like global errors then set the global * error to -ENOENT if necessary. */ |