From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [PATCH] drm/amdgpu: fix VM leaf walking
Date: Thu, 25 Oct 2018 16:38:04 +0200 [thread overview]
Message-ID: <20181025143804.1698-1-christian.koenig@amd.com> (raw)
Make sure we don't try to go down further after the leave walk already
ended. This fixes a crash with a new VM test.
Signed-off-by: Christian König <christian.koenig@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index db0cbf8d219d..352b30409060 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -542,7 +542,8 @@ static void amdgpu_vm_pt_next_leaf(struct amdgpu_device *adev,
struct amdgpu_vm_pt_cursor *cursor)
{
amdgpu_vm_pt_next(adev, cursor);
- while (amdgpu_vm_pt_descendant(adev, cursor));
+ if (cursor->pfn != ~0ll)
+ while (amdgpu_vm_pt_descendant(adev, cursor));
}
/**
--
2.17.1
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next reply other threads:[~2018-10-25 14:38 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-25 14:38 Christian König [this message]
[not found] ` <20181025143804.1698-1-christian.koenig-5C7GfCeVMHo@public.gmane.org>
2018-10-25 15:07 ` [PATCH] drm/amdgpu: fix VM leaf walking Deucher, Alexander
[not found] ` <BN6PR12MB180949222B5967C8A2DD147DF7F70-/b2+HYfkarSEx6ez0IUAagdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-10-25 15:33 ` Zhu, Rex
[not found] ` <BYAPR12MB2775292DA22A6D78872926DDFBF70-ZGDeBxoHBPmJeBUhB162ZQdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-10-25 15:43 ` Zhu, Rex
[not found] ` <BYAPR12MB2775D822132203F5E206128EFBF70-ZGDeBxoHBPmJeBUhB162ZQdYzm3356FpvxpqHgZTriW3zl9H0oFU5g@public.gmane.org>
2018-10-26 7:34 ` Christian König
[not found] ` <c3a525d1-2537-f561-5bd1-5b862a0d3e3c-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2018-10-29 5:45 ` Zhu, Rex
2018-10-25 16:01 ` Kuehling, Felix
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