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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2013-12-19 15:28:51 -0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-04-09 02:20:46 +0100 |
| commit | 738638c53d523683bc4b761be9a58da843f26a10 (patch) | |
| tree | c811a97eb2674a0e8744a081d3fdcd6429151faf /arch/x86/kvm/vmx.c | |
| parent | 615139289271610f38aa0b23f36583cee9afc7e5 (diff) | |
KVM: MMU: handle invalid root_hpa at __direct_map
commit 989c6b34f6a9480e397b170cc62237e89bf4fdb9 upstream.
It is possible for __direct_map to be called on invalid root_hpa
(-1), two examples:
1) try_async_pf -> can_do_async_pf
-> vmx_interrupt_allowed -> nested_vmx_vmexit
2) vmx_handle_exit -> vmx_interrupt_allowed -> nested_vmx_vmexit
Then to load_vmcs12_host_state and kvm_mmu_reset_context.
Check for this possibility, let fault exception be regenerated.
BZ: https://bugzilla.redhat.com/show_bug.cgi?id=924916
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
0 files changed, 0 insertions, 0 deletions