diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/kvmgt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 4ba196796846..8b3b071a535e 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1137,6 +1137,10 @@ static int kvmgt_write_protect_add(unsigned long handle, u64 gfn) idx = srcu_read_lock(&kvm->srcu); slot = gfn_to_memslot(kvm, gfn); + if (!slot) { + srcu_read_unlock(&kvm->srcu, idx); + return -EINVAL; + } spin_lock(&kvm->mmu_lock); @@ -1167,6 +1171,10 @@ static int kvmgt_write_protect_remove(unsigned long handle, u64 gfn) idx = srcu_read_lock(&kvm->srcu); slot = gfn_to_memslot(kvm, gfn); + if (!slot) { + srcu_read_unlock(&kvm->srcu, idx); + return -EINVAL; + } spin_lock(&kvm->mmu_lock); |
