1 files changed, 56 insertions, 0 deletions
diff --git a/results/classifier/118/KVM/1045 b/results/classifier/118/KVM/1045
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+++ b/results/classifier/118/KVM/1045
@@ -0,0 +1,56 @@
+KVM: 0.818
+mistranslation: 0.788
+virtual: 0.774
+graphic: 0.763
+hypervisor: 0.744
+debug: 0.738
+semantic: 0.695
+i386: 0.610
+device: 0.570
+ppc: 0.550
+kernel: 0.516
+performance: 0.488
+x86: 0.460
+peripherals: 0.437
+architecture: 0.433
+vnc: 0.431
+socket: 0.424
+network: 0.421
+PID: 0.404
+boot: 0.374
+permissions: 0.365
+risc-v: 0.348
+register: 0.340
+files: 0.340
+VMM: 0.327
+arm: 0.281
+TCG: 0.234
+user-level: 0.233
+assembly: 0.122
+
+When a break point is set, nested virtualization sees "kvm_queue_exception: Assertion `!env->exception_has_payload' failed."
+Description of problem:
+I am debugging XMHF and LHV using QEMU + KVM. I found that if I set a break point using GDB, QEMU will crash when LHV is booting. The message is
+```
+qemu-system-i386: ../../../target/i386/kvm/kvm.c:678: kvm_queue_exception: Assertion `!env->exception_has_payload' failed.
+```
+
+The address of the break point is arbitrary. The break point does not need to hit. So I chose 0 as the address in this bug report.
+Steps to reproduce:
+1. Start QEMU using `qemu-system-i386 -m 512M -gdb tcp::1234 -smp 2 -cpu Haswell,vmx=yes -enable-kvm -serial stdio -drive media=disk,file=1.img,index=1 -drive media=disk,file=2.img,index=2 -S`
+2. In another shell, start GDB using `gdb --ex 'target remote :::1234' --ex 'hb *0' --ex c`
+3. See many serial output lines. The tail of the output is
+    ```
+    CPU #0: vcpu_vaddr_ptr=0x01e06080, esp=0x01e11000
+    CPU #1: vcpu_vaddr_ptr=0x01e06540, esp=0x01e15000
+    BSP(0x00): Rallying APs...
+    BSP(0x00): APs ready, doing DRTM...
+    LAPIC base and status=0xfee00900
+    Sending INIT IPI to all APs...
+    ```
+4. See assertion error in QEMU
+    ```
+    qemu-system-i386: ../target/i386/kvm/kvm.c:645: kvm_queue_exception: Assertion `!env->exception_has_payload' failed.
+    ```
+Additional information:
+This bug was first incorrectly filed in KVM's bug tracker at <https://bugzilla.kernel.org/show_bug.cgi?id=216002>.