Commit 8c1fa997 authored by Tiffany Lin's avatar Tiffany Lin Committed by Greg Kroah-Hartman

media: v4l2-compat-ioctl32: fix missing length copy in put_v4l2_buffer32

commit 7df5ab87 upstream.

In v4l2-compliance utility, test QUERYBUF required correct length
value to go through each planar to check planar's length in
multi-planar buffer type
Signed-off-by: default avatarTiffany Lin <tiffany.lin@mediatek.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6aed423a
......@@ -415,7 +415,8 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
get_user(kp->index, &up->index) ||
get_user(kp->type, &up->type) ||
get_user(kp->flags, &up->flags) ||
get_user(kp->memory, &up->memory))
get_user(kp->memory, &up->memory) ||
get_user(kp->length, &up->length))
return -EFAULT;
if (V4L2_TYPE_IS_OUTPUT(kp->type))
......@@ -427,9 +428,6 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
return -EFAULT;
if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
if (get_user(kp->length, &up->length))
return -EFAULT;
num_planes = kp->length;
if (num_planes == 0) {
kp->m.planes = NULL;
......@@ -462,16 +460,14 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
} else {
switch (kp->memory) {
case V4L2_MEMORY_MMAP:
if (get_user(kp->length, &up->length) ||
get_user(kp->m.offset, &up->m.offset))
if (get_user(kp->m.offset, &up->m.offset))
return -EFAULT;
break;
case V4L2_MEMORY_USERPTR:
{
compat_long_t tmp;
if (get_user(kp->length, &up->length) ||
get_user(tmp, &up->m.userptr))
if (get_user(tmp, &up->m.userptr))
return -EFAULT;
kp->m.userptr = (unsigned long)compat_ptr(tmp);
......@@ -513,7 +509,8 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
copy_to_user(&up->timecode, &kp->timecode, sizeof(struct v4l2_timecode)) ||
put_user(kp->sequence, &up->sequence) ||
put_user(kp->reserved2, &up->reserved2) ||
put_user(kp->reserved, &up->reserved))
put_user(kp->reserved, &up->reserved) ||
put_user(kp->length, &up->length))
return -EFAULT;
if (V4L2_TYPE_IS_MULTIPLANAR(kp->type)) {
......@@ -536,13 +533,11 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
} else {
switch (kp->memory) {
case V4L2_MEMORY_MMAP:
if (put_user(kp->length, &up->length) ||
put_user(kp->m.offset, &up->m.offset))
if (put_user(kp->m.offset, &up->m.offset))
return -EFAULT;
break;
case V4L2_MEMORY_USERPTR:
if (put_user(kp->length, &up->length) ||
put_user(kp->m.userptr, &up->m.userptr))
if (put_user(kp->m.userptr, &up->m.userptr))
return -EFAULT;
break;
case V4L2_MEMORY_OVERLAY:
......
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