https://bugzilla.kernel.org/show_bug.cgi?id=210695 --- Comment #2 from Richard Herbert (rherbert@xxxxxxxxxxxx) --- Hi, Sean. I'm no programmer, unfortunately, but when kernel 5.10-rc4 was released, this was the patch that I suspected had fixed the problem. I don't find this code is 5.10.1, so it must have been reverted or moved. diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c index 27e381c9da6c2..ff28a5c6abd63 100644 --- a/arch/x86/kvm/mmu/tdp_mmu.c +++ b/arch/x86/kvm/mmu/tdp_mmu.c @@ -49,7 +49,14 @@ bool is_tdp_mmu_root(struct kvm *kvm, hpa_t hpa) { struct kvm_mmu_page *sp; + if (!kvm->arch.tdp_mmu_enabled) + return false; + if (WARN_ON(!VALID_PAGE(hpa))) + return false; + sp = to_shadow_page(hpa); + if (WARN_ON(!sp)) + return false; return sp->tdp_mmu_page && sp->root_count; } -- You are receiving this mail because: You are watching the assignee of the bug.
