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Diffstat (limited to 'results/classifier/105/instruction/1847467')
| -rw-r--r-- | results/classifier/105/instruction/1847467 | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/results/classifier/105/instruction/1847467 b/results/classifier/105/instruction/1847467 new file mode 100644 index 000000000..62857ecf6 --- /dev/null +++ b/results/classifier/105/instruction/1847467 @@ -0,0 +1,56 @@ +instruction: 0.254 +device: 0.207 +mistranslation: 0.196 +network: 0.170 +graphic: 0.155 +semantic: 0.143 +vnc: 0.128 +other: 0.111 +socket: 0.102 +boot: 0.094 +KVM: 0.089 +assembly: 0.050 + +qemu-x86_64 segment prefixes error + +qemu-x86_64 version 4.1.0 (qemu-x86_64 version 4.0.0 also have the issue) + +In 64-bit mode (x86_64) the DS, ES, SS or CS segment prefixes should be ignored; qemu-x86_64 does not ignore them. + +example: an x86_64 instructions preceded by FS DS (0x64 0x26) segment prefixes have the linear address of its memory reference flat-mapped (as if DS was in action) whereas it should be FS-mapped (offset by FS_base, because the DS, ES, SS or CS are just ignored). + + +I attach a small C++ program that shows this discrepancy. + +$ ./sample +I'm not in QEMU + +$ qemu-x86_64 ./sample +I'm in QEMU + + + +The QEMU project is currently considering to move its bug tracking to +another system. For this we need to know which bugs are still valid +and which could be closed already. Thus we are setting older bugs to +"Incomplete" now. + +If you still think this bug report here is valid, then please switch +the state back to "New" within the next 60 days, otherwise this report +will be marked as "Expired". Or please mark it as "Fix Released" if +the problem has been solved with a newer version of QEMU already. + +Thank you and sorry for the inconvenience. + + +Repro case in comment #1 still demonstrates bug. + + + +This is an automated cleanup. This bug report has been moved to QEMU's +new bug tracker on gitlab.com and thus gets marked as 'expired' now. +Please continue with the discussion here: + + https://gitlab.com/qemu-project/qemu/-/issues/267 + + |