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Subject: [media] media: v4l2-compat-ioctl32: fix missing reserved field copy in 
put_v4l2_create32
Author:  Tiffany Lin <[email protected]>
Date:    Mon Mar 14 08:16:14 2016 -0300

In v4l2-compliance utility, test VIDIOC_CREATE_BUFS will check whether reserved
filed of v4l2_create_buffers filled with zero
Reserved field is filled with zero in v4l_create_bufs.
This patch copy reserved field of v4l2_create_buffer from kernel space to user
space

Signed-off-by: Tiffany Lin <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Cc: <[email protected]>      # for v3.19 and up
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

---

diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c 
b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 019644ff627d..bacecbd68a6d 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -280,7 +280,8 @@ static int put_v4l2_format32(struct v4l2_format *kp, struct 
v4l2_format32 __user
 static int put_v4l2_create32(struct v4l2_create_buffers *kp, struct 
v4l2_create_buffers32 __user *up)
 {
        if (!access_ok(VERIFY_WRITE, up, sizeof(struct v4l2_create_buffers32)) 
||
-           copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, 
format)))
+           copy_to_user(up, kp, offsetof(struct v4l2_create_buffers32, 
format)) ||
+           copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
                return -EFAULT;
        return __put_v4l2_format32(&kp->format, &up->format);
 }

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