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| author | Michal Luczaj <mhal@rbox.co> | 2023-07-28 02:12:58 +0200 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-08-02 13:33:20 -0700 |
| commit | 60c4063b475215321fc63ab253c9a840bb664f35 (patch) | |
| tree | 7296e3c7824133952460147df9b8a596921e66a3 /tools/testing/selftests/kvm/lib/sparsebit.c | |
| parent | ae895cbe613a5b193f3953c90c075306bfa4d30b (diff) | |
KVM: selftests: Extend x86's sync_regs_test to check for event vector races
Attempt to modify the to-be-injected exception vector to an illegal value
_after_ the sanity checks performed by KVM_CAP_SYNC_REGS's
arch/x86/kvm/x86.c:kvm_vcpu_ioctl_x86_set_vcpu_events(). Buggy KVM
versions will eventually yells loudly about attempting to inject a bogus
vector, e.g.
WARNING: CPU: 0 PID: 1107 at arch/x86/kvm/x86.c:547 kvm_check_and_inject_events+0x4a0/0x500 [kvm]
arch/x86/kvm/x86.c:exception_type():
WARN_ON(vector > 31 || vector == NMI_VECTOR)
Signed-off-by: Michal Luczaj <mhal@rbox.co>
Link: https://lore.kernel.org/r/20230728001606.2275586-3-mhal@rbox.co
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'tools/testing/selftests/kvm/lib/sparsebit.c')
0 files changed, 0 insertions, 0 deletions