On 27.04.2015 17:04, Christian König wrote: > From: Christian König <christian.koenig at amd.com> > > If we unmap BOs before releasing them them the intervall tree locks > up because we try to remove an entry not inside the tree. > > Signed-off-by: Christian König <christian.koenig at amd.com> > CC: stable at vger.kernel.org
Somehow forgot to mention that Michel is the original author of this patch, I just fixed two additional lines which caused list corruption. Regards, Christian. > --- > drivers/gpu/drm/radeon/radeon_vm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/radeon/radeon_vm.c > b/drivers/gpu/drm/radeon/radeon_vm.c > index 2a5a4a9..16d8e95 100644 > --- a/drivers/gpu/drm/radeon/radeon_vm.c > +++ b/drivers/gpu/drm/radeon/radeon_vm.c > @@ -1107,7 +1107,8 @@ void radeon_vm_bo_rmv(struct radeon_device *rdev, > list_del(&bo_va->bo_list); > > mutex_lock(&vm->mutex); > - interval_tree_remove(&bo_va->it, &vm->va); > + if (bo_va->it.start || bo_va->it.last) > + interval_tree_remove(&bo_va->it, &vm->va); > spin_lock(&vm->status_lock); > list_del(&bo_va->vm_status); >
