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Merge tag 'drm-intel-fixes-2022-11-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

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- Fix uaf with lmem_userfault_list handling (Matthew Auld)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/Y3X2bNJ/4GR1BAiG@tursulin-desk
This commit is contained in:
Dave Airlie 2022-11-18 11:02:53 +10:00
commit a73b603f91
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/gem/i915_gem_ttm.c
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@ -1013,9 +1013,6 @@ static vm_fault_t vm_fault_ttm(struct vm_fault *vmf)
return VM_FAULT_SIGBUS;
}
if (i915_ttm_cpu_maps_iomem(bo->resource))
wakeref = intel_runtime_pm_get(&to_i915(obj->base.dev)->runtime_pm);
if (!i915_ttm_resource_mappable(bo->resource)) {
int err = -ENODEV;
int i;
@ -1042,6 +1039,9 @@ static vm_fault_t vm_fault_ttm(struct vm_fault *vmf)
}
}
if (i915_ttm_cpu_maps_iomem(bo->resource))
wakeref = intel_runtime_pm_get(&to_i915(obj->base.dev)->runtime_pm);
if (drm_dev_enter(dev, &idx)) {
ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot,
TTM_BO_VM_NUM_PREFAULT);