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| author | Christian König <christian.koenig@amd.com> | 2015-04-27 17:04:36 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-04-27 11:29:56 -0400 |
| commit | c29c0876ec05d51a93508a39b90b92c29ba6423d (patch) | |
| tree | 3223b5c64ff0d798634fd0f4f8a7fb587aa0e551 | |
| parent | 48afbd70ac7b6aa62e8d452091023941d8085f8a (diff) | |
| download | op-kernel-dev-c29c0876ec05d51a93508a39b90b92c29ba6423d.zip op-kernel-dev-c29c0876ec05d51a93508a39b90b92c29ba6423d.tar.gz | |
drm/radeon: check new address before removing old one
Otherwise the change isn't atomic.
Signed-off-by: Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_vm.c | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c index cabcb0a..de42fc4 100644 --- a/drivers/gpu/drm/radeon/radeon_vm.c +++ b/drivers/gpu/drm/radeon/radeon_vm.c @@ -473,6 +473,23 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev, } mutex_lock(&vm->mutex); + soffset /= RADEON_GPU_PAGE_SIZE; + eoffset /= RADEON_GPU_PAGE_SIZE; + if (soffset || eoffset) { + struct interval_tree_node *it; + it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1); + if (it && it != &bo_va->it) { + struct radeon_bo_va *tmp; + tmp = container_of(it, struct radeon_bo_va, it); + /* bo and tmp overlap, invalid offset */ + dev_err(rdev->dev, "bo %p va 0x%010Lx conflict with " + "(bo %p 0x%010lx 0x%010lx)\n", bo_va->bo, + soffset, tmp->bo, tmp->it.start, tmp->it.last); + mutex_unlock(&vm->mutex); + return -EINVAL; + } + } + if (bo_va->it.start || bo_va->it.last) { if (bo_va->addr) { /* add a clone of the bo_va to clear the old address */ @@ -499,21 +516,7 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev, bo_va->it.last = 0; } - soffset /= RADEON_GPU_PAGE_SIZE; - eoffset /= RADEON_GPU_PAGE_SIZE; if (soffset || eoffset) { - struct interval_tree_node *it; - it = interval_tree_iter_first(&vm->va, soffset, eoffset - 1); - if (it) { - struct radeon_bo_va *tmp; - tmp = container_of(it, struct radeon_bo_va, it); - /* bo and tmp overlap, invalid offset */ - dev_err(rdev->dev, "bo %p va 0x%010Lx conflict with " - "(bo %p 0x%010lx 0x%010lx)\n", bo_va->bo, - soffset, tmp->bo, tmp->it.start, tmp->it.last); - mutex_unlock(&vm->mutex); - return -EINVAL; - } bo_va->it.start = soffset; bo_va->it.last = eoffset - 1; interval_tree_insert(&bo_va->it, &vm->va); |
