This is a note to let you know that I've just added the patch titled
media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
media-v4l2-compat-ioctl32.c-copy-m.userptr-in-put_v4l2_plane32.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Thu Feb 15 08:41:28 CET 2018
From: Hans Verkuil <hverkuil@xxxxxxxxx>
Date: Wed, 14 Feb 2018 12:48:23 +0100
Subject: media: v4l2-compat-ioctl32.c: copy m.userptr in put_v4l2_plane32
To: stable@xxxxxxxxxxxxxxx
Cc: linux-media@xxxxxxxxxxxxxxx, Hans Verkuil <hans.verkuil@xxxxxxxxx>, Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Message-ID: <20180214114830.27171-7-hverkuil@xxxxxxxxx>
From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
commit 8ed5a59dcb47a6f76034ee760b36e089f3e82529 upstream.
The struct v4l2_plane32 should set m.userptr as well. The same
happens in v4l2_buffer32 and v4l2-compliance tests for this.
Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>
Acked-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 47 +++++++++++++++-----------
1 file changed, 28 insertions(+), 19 deletions(-)
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -299,19 +299,24 @@ static int get_v4l2_plane32(struct v4l2_
sizeof(up->data_offset)))
return -EFAULT;
- if (memory == V4L2_MEMORY_USERPTR) {
+ switch (memory) {
+ case V4L2_MEMORY_MMAP:
+ case V4L2_MEMORY_OVERLAY:
+ if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
+ sizeof(up32->m.mem_offset)))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_USERPTR:
if (get_user(p, &up32->m.userptr))
return -EFAULT;
up_pln = compat_ptr(p);
if (put_user((unsigned long)up_pln, &up->m.userptr))
return -EFAULT;
- } else if (memory == V4L2_MEMORY_DMABUF) {
+ break;
+ case V4L2_MEMORY_DMABUF:
if (copy_in_user(&up->m.fd, &up32->m.fd, sizeof(up32->m.fd)))
return -EFAULT;
- } else {
- if (copy_in_user(&up->m.mem_offset, &up32->m.mem_offset,
- sizeof(up32->m.mem_offset)))
- return -EFAULT;
+ break;
}
return 0;
@@ -320,22 +325,32 @@ static int get_v4l2_plane32(struct v4l2_
static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
enum v4l2_memory memory)
{
+ unsigned long p;
+
if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
copy_in_user(&up32->data_offset, &up->data_offset,
sizeof(up->data_offset)))
return -EFAULT;
- /* For MMAP, driver might've set up the offset, so copy it back.
- * USERPTR stays the same (was userspace-provided), so no copying. */
- if (memory == V4L2_MEMORY_MMAP)
+ switch (memory) {
+ case V4L2_MEMORY_MMAP:
+ case V4L2_MEMORY_OVERLAY:
if (copy_in_user(&up32->m.mem_offset, &up->m.mem_offset,
sizeof(up->m.mem_offset)))
return -EFAULT;
- /* For DMABUF, driver might've set up the fd, so copy it back. */
- if (memory == V4L2_MEMORY_DMABUF)
+ break;
+ case V4L2_MEMORY_USERPTR:
+ if (get_user(p, &up->m.userptr) ||
+ put_user((compat_ulong_t)ptr_to_compat((__force void *)p),
+ &up32->m.userptr))
+ return -EFAULT;
+ break;
+ case V4L2_MEMORY_DMABUF:
if (copy_in_user(&up32->m.fd, &up->m.fd,
sizeof(up->m.fd)))
return -EFAULT;
+ break;
+ }
return 0;
}
@@ -395,6 +410,7 @@ static int get_v4l2_buffer32(struct v4l2
} else {
switch (kp->memory) {
case V4L2_MEMORY_MMAP:
+ case V4L2_MEMORY_OVERLAY:
if (get_user(kp->m.offset, &up->m.offset))
return -EFAULT;
break;
@@ -408,10 +424,6 @@ static int get_v4l2_buffer32(struct v4l2
kp->m.userptr = (unsigned long)compat_ptr(tmp);
}
break;
- case V4L2_MEMORY_OVERLAY:
- if (get_user(kp->m.offset, &up->m.offset))
- return -EFAULT;
- break;
case V4L2_MEMORY_DMABUF:
if (get_user(kp->m.fd, &up->m.fd))
return -EFAULT;
@@ -468,6 +480,7 @@ static int put_v4l2_buffer32(struct v4l2
} else {
switch (kp->memory) {
case V4L2_MEMORY_MMAP:
+ case V4L2_MEMORY_OVERLAY:
if (put_user(kp->m.offset, &up->m.offset))
return -EFAULT;
break;
@@ -475,10 +488,6 @@ static int put_v4l2_buffer32(struct v4l2
if (put_user(kp->m.userptr, &up->m.userptr))
return -EFAULT;
break;
- case V4L2_MEMORY_OVERLAY:
- if (put_user(kp->m.offset, &up->m.offset))
- return -EFAULT;
- break;
case V4L2_MEMORY_DMABUF:
if (put_user(kp->m.fd, &up->m.fd))
return -EFAULT;
Patches currently in stable-queue which might be from hverkuil@xxxxxxxxx are
queue-4.9/media-v4l2-compat-ioctl32.c-copy-m.userptr-in-put_v4l2_plane32.patch
queue-4.9/media-v4l2-compat-ioctl32.c-avoid-sizeof-type.patch
queue-4.9/media-v4l2-compat-ioctl32.c-drop-pr_info-for-unknown-buffer-type.patch
queue-4.9/media-v4l2-compat-ioctl32.c-add-missing-vidioc_prepare_buf.patch
queue-4.9/media-v4l2-compat-ioctl32.c-refactor-compat-ioctl32-logic.patch
queue-4.9/media-v4l2-compat-ioctl32.c-fix-ctrl_is_pointer.patch
queue-4.9/media-v4l2-compat-ioctl32.c-move-helper-functions-to-__get-put_v4l2_format32.patch
queue-4.9/media-v4l2-compat-ioctl32.c-don-t-copy-back-the-result-for-certain-errors.patch
queue-4.9/media-v4l2-compat-ioctl32.c-make-ctrl_is_pointer-work-for-subdevs.patch
queue-4.9/media-v4l2-compat-ioctl32.c-fix-the-indentation.patch
queue-4.9/media-v4l2-compat-ioctl32-copy-v4l2_window-global_alpha.patch
queue-4.9/media-v4l2-ioctl.c-don-t-copy-back-the-result-for-enotty.patch
queue-4.9/media-v4l2-compat-ioctl32.c-copy-clip-list-in-put_v4l2_window32.patch