diff options
Diffstat (limited to 'results/classifier/semantic-bugs-usermode/test/1719984')
| -rw-r--r-- | results/classifier/semantic-bugs-usermode/test/1719984 | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/results/classifier/semantic-bugs-usermode/test/1719984 b/results/classifier/semantic-bugs-usermode/test/1719984 new file mode 100644 index 000000000..909f6f0d9 --- /dev/null +++ b/results/classifier/semantic-bugs-usermode/test/1719984 @@ -0,0 +1,27 @@ +instruction: 0.917 +graphic: 0.887 +mistranslation: 0.851 +device: 0.786 +network: 0.762 +semantic: 0.650 +boot: 0.624 +socket: 0.597 +vnc: 0.595 +KVM: 0.312 +other: 0.185 +assembly: 0.157 + +wrgsbase misemulated in x86_64-softmmu + +qemu revision: cfe4cade054c0e0d00d0185cdc433a9e3ce3e2e4 +command: ./qemu-system-x86_64 -m 2048 -nographic -net none -smp 4,threads=2 -machine q35 -kernel zircon.bin -cpu Haswell,+smap,-check -initrd bootdata.bin -append 'TERM=screen kernel.halt-on-panic=true ' + +On this revision, the VM reports CPUID.07H.0H.EBX[0] = 1. In this VM, with CR4[16] set to 1, wrgsbase triggers #UD, which mismatches the behavior described in Intel's instruction reference. + +For further data, the faulting instruction is +f3 48 0f ae df wrgsbase %rdi + +Fix is in staging: https://github.com/ehabkost/qemu/commit/cdcc80d41360e278b45c91de29a29d797264e85d + +Fix is in master: https://github.com/qemu/qemu/commit/e0dd5fd41a1a38766009f442967fab700d2d0550 + |