[PATCH v2 0/3] drm/msm: Fix VM_BIND job, queue and entity lifetimes

[Jiwoo Kim <arpe1618@gmail.com>]

These fix what happens to VM_BIND jobs, queues and entities when the
file or a VM_BIND queue is closed while jobs are still pending.

Patch 1 makes a VM_BIND job that is freed without having run apply its
queued unmaps before it drops the references that keep the unmapped
pages alive, release its BO pins, and mark the VM unusable, as the VM
no longer matches its pgtables. Patch 2 destroys the VM_BIND entity
when its queue is closed, instead of on the final put, which can come
after the VM's scheduler has been torn down. Patch 3 puts the queue
last in msm_vma_job_free(), as the queue may hold the last reference to
the VM.

Changes in v2:
- New patch 1, for an issue that Sashiko reported on v1 patch 1, which
  that patch makes easier to hit.
- Patch 2: changelog refers to patch 1.

v1: https://lore.kernel.org/r/20261114062541.2001-1-arpe1618@gmail.com

Jiwoo Kim (3):
  drm/msm: Release the pins and ops of a VM_BIND job that never ran
  drm/msm: Destroy the VM_BIND entity when its queue is closed
  drm/msm: Put the VM_BIND queue last in msm_vma_job_free()

 drivers/gpu/drm/msm/msm_gem_vma.c     | 77 +++++++++++++++++++++------
 drivers/gpu/drm/msm/msm_gpu.h         |  6 +++
 drivers/gpu/drm/msm/msm_submitqueue.c | 50 ++++++++++++-----
 3 files changed, 102 insertions(+), 31 deletions(-)


base-commit: 1e59855738454b14021b64115f0090eafc7526ae
-- 
2.43.0