On Thu, Jan 25, 2018 at 01:31:36PM +0100, Hans Verkuil wrote: > > Ah... Hm. Is it the call to vb2_core_dqbuf() which limits buf->index? > > I don't see a path from vb2_core_dqbuf() to vb2_qbuf() but I may have > > missed it. > > The __fill_v4l2_buffer() function in videobuf2-v4l2.c is called by > vb2_core_dqbuf(). > And that __fill_v4l2_buffer() overwrited the index field: b->index = > vb->index; > > So after the vb2_dqbuf call the buf->index field is correct and bounded. >
Ah.. I get it. Thanks. regards, dan carpenter
