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| author | Marcelo Tosatti <mtosatti@redhat.com> | 2013-12-19 15:28:51 -0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-30 21:40:31 -0700 |
| commit | 86bbe6ac6eab65ac4346882cb26d91e8ca6c975d (patch) | |
| tree | fdba8440bad4a3583526741d2c91c6630de925d0 /lib/timerqueue.c | |
| parent | 037a05761d3ad2e7cbd417b421031a82de7f5c9f (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>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/timerqueue.c')
0 files changed, 0 insertions, 0 deletions