drm/nouveau: remove fence wait code from deferred client work handler

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Fences attached to deferred client work items now originate from channels
belonging to the client, meaning we can be certain they've been signalled
before we destroy a client.

This closes a race that could happen if the dma_fence_wait_timeout() call
didn't succeed.  When the fence was later signalled, a use-after-free was
possible.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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Ben Skeggs 2018-05-08 20:39:47 +10:00

parent 470db8b781

commit 11e451e740

1 changed files with 14 additions and 16 deletions

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drivers/gpu/drm/nouveau/nouveau_drm.c

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