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| author | Alex Deucher <alexander.deucher@amd.com> | 2013-11-13 15:25:35 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2013-11-15 15:56:22 -0500 |
| commit | 4cc948b94a222c310ae089c36718aac7a03aec90 (patch) | |
| tree | 92c9765b93ee4e93b50eb4c4bd1b9f2497737b69 /drivers/gpu | |
| parent | 99b4f25122f43210278cde17a9d100906235a074 (diff) | |
| download | op-kernel-dev-4cc948b94a222c310ae089c36718aac7a03aec90.zip op-kernel-dev-4cc948b94a222c310ae089c36718aac7a03aec90.tar.gz | |
drm/radeon/vm: don't attempt to update ptes if ib allocation fails
If we fail to allocate an indirect buffer (ib) when updating
the ptes, return an error instead of trying to use the ib.
Avoids a null pointer dereference.
Bug:
https://bugzilla.kernel.org/show_bug.cgi?id=58621
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gart.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index cd7489b..3044e50 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -1209,6 +1209,8 @@ int radeon_vm_bo_update_pte(struct radeon_device *rdev, return -ENOMEM; r = radeon_ib_get(rdev, R600_RING_TYPE_DMA_INDEX, &ib, NULL, ndw * 4); + if (r) + return r; ib.length_dw = 0; r = radeon_vm_update_pdes(rdev, vm, &ib, bo_va->soffset, bo_va->eoffset); |
