Nicolai Hähnle 3089c1df10 drm/ttm: fix use-after-free races in vm fault handling ... The vm fault handler relies on the fact that the VMA owns a reference to the BO. However, once mmap_sem is released, other tasks are free to destroy the VMA, which can lead to the BO being freed. Fix two code paths where that can happen, both related to vm fault retries. Found via a lock debugging warning which flagged &bo->wu_mutex as locked while being destroyed. Fixes: cbe12e74ee ("drm/ttm: Allow vm fault retries") Signed-off-by: Nicolai Hähnle <nicolai.haehnle@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>		2017-02-21 16:48:45 -05:00
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Makefile	drm/ttm: Remove TTM_HAS_AGP	2016-03-30 17:20:43 +02:00
ttm_agp_backend.c	drm/ttm: Remove TTM_HAS_AGP	2016-03-30 17:20:43 +02:00
ttm_bo_manager.c	drm: Improve drm_mm search (and fix topdown allocation) with rbtrees	2017-02-03 11:10:32 +01:00
ttm_bo_util.c	dma-buf: Rename struct fence to dma_fence	2016-10-25 14:40:39 +02:00
ttm_bo_vm.c	drm/ttm: fix use-after-free races in vm fault handling	2017-02-21 16:48:45 -05:00
ttm_bo.c	Merge branch 'drm-next-4.11' of git://people.freedesktop.org/~agd5f/linux into drm-next	2017-02-01 08:39:35 +10:00
ttm_execbuf_util.c	dma-buf: Rename struct fence to dma_fence	2016-10-25 14:40:39 +02:00
ttm_lock.c	drm/ttm: Fixed a read/write lock imbalance	2015-11-26 15:47:38 +01:00
ttm_memory.c	drm/ttm: Add interface to export kernel_zone max memory size in ttm	2016-08-08 11:33:08 -04:00
ttm_module.c	drm/ttm: make device_released static	2014-07-22 12:59:32 +10:00
ttm_object.c	dma-buf: cleanup dma_buf_export() to make it easily extensible	2015-04-21 14:47:16 +05:30
ttm_page_alloc_dma.c	drm/ttm: remove cpu_address member from ttm_tt	2016-09-16 15:53:05 -04:00
ttm_page_alloc.c	drm/ttm: Remove TTM_HAS_AGP	2016-03-30 17:20:43 +02:00
ttm_tt.c	drm/ttm: remove cpu_address member from ttm_tt	2016-09-16 15:53:05 -04:00