On Mon, Jun 15, 2020 at 04:05:00PM -0700, Gurchetan Singh wrote:
> This reverts commit d323bb44e4d23802eb25d13de1f93f2335bd60d0.
>
> Fixes a double-free regression:
>
> [ 4.357928] drm_gem_shmem_free_object+0xb4/0x100
> [ 4.358983] virtio_gpu_dequeue_ctrl_func+0xd9/0x290
> [ 4.360343] process_one_work+0x1d2/0x3a0
> [ 4.361581] worker_thread+0x45/0x3c0
> [ 4.362645] kthread+0xf6/0x130
> [ 4.363543] ? process_one_work+0x3a0/0x3a0
> [ 4.364770] ? kthread_park+0x80/0x80
> [ 4.365799] ret_from_fork+0x35/0x40
> [ 4.367103] Modules linked in:
> [ 4.367958] CR2: 0000000000000018
> [ 4.368857] ---[ end trace db84f7a2974d5c79 ]---
> [ 4.370118] RIP: 0010:dma_direct_unmap_sg+0x1f/0x60
>
> In addition, virtio has it's own set of dma-ops so there's not an
> obviously clean way to transition to shmem helpers.
>
> Fixes: d323bb44e4d2 ("drm/virtio: Call the right shmem helpers")
> Signed-off-by: Gurchetan Singh <gurchetansingh@xxxxxxxxxxxx>
Pushed to drm-misc-next (will cherry-pick into -fixes once that is
rebased to 5.9-rc1 or newer).
thanks,
Gerd
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