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| author | Sean Christopherson <seanjc@google.com> | 2022-08-04 23:50:28 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-08-10 15:08:23 -0400 |
| commit | 70c8327c11c6d4080d4a774f531c6a6521592568 (patch) | |
| tree | 0911e4769add9407e27308d71fd6cc4f8c549b15 /arch/csky | |
| parent | c3c28d24d910a746b02f496d190e0e8c6560224b (diff) | |
| download | linux-70c8327c11c6d4080d4a774f531c6a6521592568.tar.bz2 | |
KVM: x86: Bug the VM if an accelerated x2APIC trap occurs on a "bad" reg
Bug the VM if retrieving the x2APIC MSR/register while processing an
accelerated vAPIC trap VM-Exit fails. In theory it's impossible for the
lookup to fail as hardware has already validated the register, but bugs
happen, and not checking the result of kvm_lapic_msr_read() would result
in consuming the uninitialized "val" if a KVM or hardware bug occurs.
Fixes: 1bd9dfec9fd4 ("KVM: x86: Do not block APIC write for non ICR registers")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220804235028.1766253-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/csky')
0 files changed, 0 insertions, 0 deletions