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| author |   Nadav Amit <namit@cs.technion.ac.il> | 2014-11-19 17:43:12 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2014-11-19 18:19:57 +0100 |
| commit | abc7d8a4c935dbe0be5db2eb338b2ec9b27ae157 (patch) | |
| tree | a66b88a71c4fb6b4674300be3b5bbc217d81ffa9 /arch/x86/kvm/emulate.c | |
| parent | KVM: x86: Perform limit checks when assigning EIP (diff) | |
| download | linux-dev-abc7d8a4c935dbe0be5db2eb338b2ec9b27ae157.tar.xz linux-dev-abc7d8a4c935dbe0be5db2eb338b2ec9b27ae157.zip | |
KVM: x86: Non-canonical access using SS should cause #SS
When SS is used using a non-canonical address, an #SS exception is generated on
real hardware. KVM emulator causes a #GP instead. Fix it to behave as real x86
CPU.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/emulate.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 4d083fb9dd8e..57dc0d79c10e 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -635,7 +635,7 @@ static __always_inline int __linearize(struct x86_emulate_ctxt *ctxt, switch (mode) { case X86EMUL_MODE_PROT64: if (is_noncanonical_address(la)) - return emulate_gp(ctxt, 0); + goto bad; *max_size = min_t(u64, ~0u, (1ull << 48) - la); if (size > *max_size) |