OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

media: bdisp: fix memleak on release 

commit 11609a7e21 upstream.

If a process is interrupted while accessing the video device and the
device lock is contended, release() could return early and fail to free
related resources.

Note that the return value of the v4l2 release file operation is
ignored.

Fixes: 28ffeebbb7 ("[media] bdisp: 2D blitter driver using v4l2 mem2mem framework")
Cc: stable <stable@vger.kernel.org>     # 4.2
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2019-10-10 10:13:31 -03:00 committed by Greg Kroah-Hartman
parent 7c5aabf080
commit 733c4d12e9
1 changed files with 1 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/media/platform/sti/bdisp/bdisp-v4l2.c
View File

@ -651,8 +651,7 @@ static int bdisp_release(struct file *file)
dev_dbg(bdisp->dev, "%s\n", __func__);
if (mutex_lock_interruptible(&bdisp->lock))
return -ERESTARTSYS;
mutex_lock(&bdisp->lock);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);