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87796555d4
linux/arch/x86/kvm/vmx
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Sean Christopherson 87796555d4 KVM: nVMX: Store vmcs.EXIT_QUALIFICATION as an unsigned long, not u32 
Use an unsigned long for 'exit_qual' in nested_vmx_reflect_vmexit(), the
EXIT_QUALIFICATION field is naturally sized, not a 32-bit field.

The bug is most easily observed by doing VMXON (or any VMX instruction)
in L2 with a negative displacement, in which case dropping the upper
bits on nested VM-Exit results in L1 calculating the wrong virtual
address for the memory operand, e.g. "vmxon -0x8(%rbp)" yields:

  Unhandled cpu exception 14 #PF at ip 0000000000400553
  rbp=0000000000537000 cr2=0000000100536ff8

Fixes: fbdd502503 ("KVM: nVMX: Move VM-Fail check out of nested_vmx_exit_reflected()")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200423001127.13490-1-sean.j.christopherson@intel.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-04-24 12:51:21 -04:00
..
capabilities.h KVM: x86: Handle PKU CPUID adjustment in VMX code 2020-03-16 17:58:19 +01:00
evmcs.c KVM: eVMCS: check if nesting is enabled 2020-04-23 09:04:56 -04:00
evmcs.h KVM: nVMX: properly handle errors in nested_vmx_handle_enlightened_vmptrld() 2020-03-16 18:19:30 +01:00
nested.c KVM: nVMX: Store vmcs.EXIT_QUALIFICATION as an unsigned long, not u32 2020-04-24 12:51:21 -04:00
nested.h KVM: x86: move nested-related kvm_x86_ops to a separate struct 2020-04-23 09:04:57 -04:00
ops.h KVM: VMX: Drop redundant capability checks in low level INVVPID helpers 2020-04-20 17:26:08 -04:00
pmu_intel.c KVM: VMX: Directly query Intel PT mode when refreshing PMUs 2020-03-16 17:58:38 +01:00
vmcs12.c KVM: nVMX: Remove non-functional "support" for CR3 target values 2020-04-21 09:13:09 -04:00
vmcs12.h KVM: nVMX: Remove non-functional "support" for CR3 target values 2020-04-21 09:13:09 -04:00
vmcs_shadow_fields.h KVM: Fix some out-dated function names in comment 2020-01-21 13:57:27 +01:00
vmcs.h KVM: VMX: Leave preemption timer running when it's disabled 2019-06-18 17:10:46 +02:00
vmenter.S KVM: VMX: Remove unnecessary exception trampoline in vmx_vmenter 2020-04-07 04:21:20 -04:00
vmx.c KVM: x86: move nested-related kvm_x86_ops to a separate struct 2020-04-23 09:04:57 -04:00
vmx.h KVM: VMX: Cache vmcs.EXIT_INTR_INFO using arch avail_reg flags 2020-04-21 09:13:07 -04:00