We have this gitlab issue for the project qemu. This is a semantic mistranslation bug:
----
x86 BLSMSK semantic bug
Host environment

Operating system: Windows 10 20H2
OS/kernel version: WSL2 Ubuntu 20.04.4 LTS (GNU/Linux 5.10.102.1-microsoft-standard-WSL2 x86_64)
Architecture: x86
QEMU flavor: qemu-x86_64
QEMU version: 7.1.90 (v7.2.0-rc0)
QEMU command line: qemu-x86_64 -cpu max a.out

Emulated/Virtualized environment

Operating system: None
OS/kernel version: None
Architecture: x86

Description of problem
The result of instruction BLSMSK is different with from the CPU. The value of CF is different.

Steps to reproduce

Compile this code

void main() {
    asm("mov rax, 0x65b2e276ad27c67");
    asm("mov rbx, 0x62f34955226b2b5d");
    asm("blsmsk eax, ebx");
}

Execute and compare the result with the CPU.
CPU CF = 0
QEMU CF = 1
----

This issue results in the following toml:
----
id = 1371
title = "x86 BLSMSK semantic bug"
state = "closed"
created_at = "2022-12-16T06:43:29.794Z"
closed_at = "2023-03-01T01:08:38.844Z"
url = "https://gitlab.com/qemu-project/qemu/-/issues/1371"
host-os = "Windows 10 20H2"
host-arch = "x86"
qemu-version = "7.1.90 (v7.2.0-rc0)"
guest-os = "None"
guest-arch = "x86"
description = """The result of instruction BLSMSK is different with from the CPU. The value of CF is different."""
reproducer = """
void main() {
    asm("mov rax, 0x65b2e276ad27c67");
    asm("mov rbx, 0x62f34955226b2b5d");
    asm("blsmsk eax, ebx");
}
"""
additional = """This bug is discovered by research conducted by KAIST SoftSec."""
semantic = "yes"
----

For the following mailing thread, output only a toml with the corresponding variables. If an information cannot be gathered, put "n/a" instead. But you have to determine, if it is a semantic bug or not: