I'm not sure why the code assumes that only the first put_user() needs
an access_ok() check. I have made all the put_user() and get_user()
calls checked.
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
diff --git a/drivers/video/fbdev/sbuslib.c b/drivers/video/fbdev/sbuslib.c
index a436d44f1b7f..90c51330969c 100644
--- a/drivers/video/fbdev/sbuslib.c
+++ b/drivers/video/fbdev/sbuslib.c
@@ -106,11 +106,11 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long
arg,
struct fbtype __user *f = (struct fbtype __user *) arg;
if (put_user(type, &f->fb_type) ||
- __put_user(info->var.yres, &f->fb_height) ||
- __put_user(info->var.xres, &f->fb_width) ||
- __put_user(fb_depth, &f->fb_depth) ||
- __put_user(0, &f->fb_cmsize) ||
- __put_user(fb_size, &f->fb_cmsize))
+ put_user(info->var.yres, &f->fb_height) ||
+ put_user(info->var.xres, &f->fb_width) ||
+ put_user(fb_depth, &f->fb_depth) ||
+ put_user(0, &f->fb_cmsize) ||
+ put_user(fb_size, &f->fb_cmsize))
return -EFAULT;
return 0;
}
@@ -125,10 +125,10 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long
arg,
unsigned int index, count, i;
if (get_user(index, &c->index) ||
- __get_user(count, &c->count) ||
- __get_user(ured, &c->red) ||
- __get_user(ugreen, &c->green) ||
- __get_user(ublue, &c->blue))
+ get_user(count, &c->count) ||
+ get_user(ured, &c->red) ||
+ get_user(ugreen, &c->green) ||
+ get_user(ublue, &c->blue))
return -EFAULT;
cmap.len = 1;
@@ -165,10 +165,10 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long
arg,
u8 red, green, blue;
if (get_user(index, &c->index) ||
- __get_user(count, &c->count) ||
- __get_user(ured, &c->red) ||
- __get_user(ugreen, &c->green) ||
- __get_user(ublue, &c->blue))
+ get_user(count, &c->count) ||
+ get_user(ured, &c->red) ||
+ get_user(ugreen, &c->green) ||
+ get_user(ublue, &c->blue))
return -EFAULT;
if (index + count > cmap->len)
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