This is a note to let you know that I've just added the patch titled
drm/virtio: Unlock reservations on dma_resv_reserve_fences() error
to the 6.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-virtio-unlock-reservations-on-dma_resv_reserve_fences-error.patch
and it can be found in the queue-6.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0f877398d30e1df657a31a62f7c7de1869b072b5 Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
Date: Thu, 30 Jun 2022 23:07:21 +0300
Subject: drm/virtio: Unlock reservations on dma_resv_reserve_fences() error
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From: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
commit 0f877398d30e1df657a31a62f7c7de1869b072b5 upstream.
Unlock reservations on dma_resv_reserve_fences() error to fix recursive
locking of the reservations when this error happens.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: c8d4c18bfbc4 ("dma-buf/drivers: make reserving a shared slot mandatory v4")
Reviewed-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
Link: http://patchwork.freedesktop.org/patch/msgid/20220630200726.1884320-5-dmitry.osipenko@xxxxxxxxxxxxx
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/virtio/virtgpu_gem.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/virtio/virtgpu_gem.c
+++ b/drivers/gpu/drm/virtio/virtgpu_gem.c
@@ -228,8 +228,10 @@ int virtio_gpu_array_lock_resv(struct vi
for (i = 0; i < objs->nents; ++i) {
ret = dma_resv_reserve_fences(objs->objs[i]->resv, 1);
- if (ret)
+ if (ret) {
+ virtio_gpu_array_unlock_resv(objs);
return ret;
+ }
}
return ret;
}
Patches currently in stable-queue which might be from dmitry.osipenko@xxxxxxxxxxxxx are
queue-6.0/drm-virtio-unlock-reservations-on-dma_resv_reserve_fences-error.patch
queue-6.0/drm-virtio-check-whether-transferred-2d-bo-is-shmem.patch
queue-6.0/drm-virtio-unlock-reservations-on-virtio_gpu_object_shmem_init-error.patch
queue-6.0/drm-virtio-use-appropriate-atomic-state-in-virtio_gpu_plane_cleanup_fb.patch
