diff options
Diffstat (limited to 'results/classifier/semantic-bugs-usermode/test/1832422')
| -rw-r--r-- | results/classifier/semantic-bugs-usermode/test/1832422 | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/results/classifier/semantic-bugs-usermode/test/1832422 b/results/classifier/semantic-bugs-usermode/test/1832422 new file mode 100644 index 000000000..39c39a63d --- /dev/null +++ b/results/classifier/semantic-bugs-usermode/test/1832422 @@ -0,0 +1,33 @@ +instruction: 0.815 +device: 0.667 +network: 0.510 +socket: 0.486 +graphic: 0.457 +semantic: 0.453 +vnc: 0.413 +boot: 0.294 +other: 0.278 +mistranslation: 0.276 +assembly: 0.233 +KVM: 0.224 + +SSE CMP ops with 8bit immediate throw sigill with oversized byte + +The SSE comparison ops that use an 8bit immediate as a comparison type selector throws a sigill when the immediate is oversized. + +Test op that I found this on is here `66 0f c2 c0 d1 cmppd xmm0,xmm0,0xd1` +According to the x86-64 documentation only bits [2:0] are used for these ops (and [4:0] for the AVX variant) +Currently qemu just checks if the value is >=8 and will throw a sigill in that case. It instead needs to mask. + +I have a small patch that fixes the issue for the SSE variant. + + + + +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/184 + + |