[PATCH 5.15 088/110] KVM: x86/mmu: kvm_faultin_pfn has to return false if pfh is returned

Greg Kroah-Hartman
2022-03-14T12:10:30Z

From: Andrei Vagin <avagin@gmail.com>

commit a7cc099f2ec3117678adeb69749bef7e9dde3148 upstream.

This looks like a typo in 8f32d5e563cb. This change didn't intend to do
any functional changes.

The problem was caught by gVisor tests.

Fixes: 8f32d5e563cb ("KVM: x86/mmu: allow kvm_faultin_pfn to return page fault handling code")
Cc: Maxim Levitsky <mlevitsk@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Message-Id: <20211015163221.472508-1-avagin@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kvm/mmu/mmu.c | 1 +
1 file changed, 1 insertion(+)

--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -3967,6 +3967,7 @@ static bool kvm_faultin_pfn(struct kvm_v

*pfn = __gfn_to_pfn_memslot(slot, gfn, false, NULL,
write, writable, hva);
+ return false;

out_retry:
*r = RET_PF_RETRY;