Commit b7310105 authored by Al Viro's avatar Al Viro

s390 keyboard.c: don't open-code strndup_user()

... especially not with off-by-ones (strnlen_user() already includes NUL
into its count).
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 8f3ba02d
......@@ -433,12 +433,7 @@ do_kdgkb_ioctl(struct kbd_data *kbd, struct kbsentry __user *u_kbs,
case KDSKBSENT:
if (!perm)
return -EPERM;
len = strnlen_user(u_kbs->kb_string, sizeof(u_kbs->kb_string));
if (!len)
return -EFAULT;
if (len > sizeof(u_kbs->kb_string))
return -EINVAL;
p = memdup_user_nul(u_kbs->kb_string, len);
p = strndup_user(u_kbs->kb_string, sizeof(u_kbs->kb_string));
if (IS_ERR(p))
return PTR_ERR(p);
kfree(kbd->func_table[kb_func]);
......
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