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Subject: media: vim2m: use cancel_delayed_work_sync instead of flush_schedule_work Author: Hans Verkuil hverkuil-cisco@xs4all.nl Date: Wed Nov 7 09:04:54 2018 -0500

The use of flush_schedule_work() made no sense and caused a syzkaller error. Replace with the correct cancel_delayed_work_sync().

Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl Reported-by: syzbot+69780d144754b8071f4b@syzkaller.appspotmail.com Cc: stable@vger.kernel.org # for v4.20 and up Signed-off-by: Mauro Carvalho Chehab mchehab+samsung@kernel.org

drivers/media/platform/vim2m.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

---

diff --git a/drivers/media/platform/vim2m.c b/drivers/media/platform/vim2m.c index 035c7b7c8d87..d01821a6906a 100644 --- a/drivers/media/platform/vim2m.c +++ b/drivers/media/platform/vim2m.c @@ -803,10 +803,11 @@ static int vim2m_start_streaming(struct vb2_queue *q, unsigned count) static void vim2m_stop_streaming(struct vb2_queue *q) { struct vim2m_ctx *ctx = vb2_get_drv_priv(q); + struct vim2m_dev *dev = ctx->dev; struct vb2_v4l2_buffer *vbuf; unsigned long flags;

- flush_scheduled_work(); + cancel_delayed_work_sync(&dev->work_run); for (;;) { if (V4L2_TYPE_IS_OUTPUT(q->type)) vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);