On 2021-07-23 11:02 a.m., Daniel Vetter wrote:
On Fri, Jul 23, 2021 at 10:19:49AM +0200, Michel Dänzer wrote:
On 2021-07-23 10:04 a.m., Christian König wrote:
Am 23.07.21 um 09:58 schrieb Michel Dänzer:
From: Michel Dänzer mdaenzer@redhat.com
This makes sure we don't hit the
BUG_ON(dmabuf->cb_in.active || dmabuf->cb_out.active);
in dma_buf_release, which could be triggered by user space closing the dma-buf file description while there are outstanding fence callbacks from dma_buf_poll.
I was also wondering the same thing while working on this, but then thought that the poll interface would take care of this.
I was able to hit the BUG_ON with https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1880 .
igt test would be really lovely. Maybe base something off the import/export igts from Jason?
I'll see what I can do, busy with other stuff right now though.