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-id = 1374
-title = "x86 BZHI semantic bug"
-state = "closed"
-created_at = "2022-12-16T07:33:54.303Z"
-closed_at = "2023-02-28T15:08:49.405Z"
-labels = ["Closed::Fixed", "accel: TCG", "target: i386"]
-url = "https://gitlab.com/qemu-project/qemu/-/issues/1374"
-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 BZHI is different from the CPU. The value of destination register and SF of EFLAGS are different."""
-reproduce = """1. Compile this code
-```
-void main() {
-    asm("mov rax, 0xb1aa9da2fe33fe3");
-    asm("mov rbx, 0x80000000ffffffff");
-    asm("mov rcx, 0xf3fce8829b99a5c6");
-    asm("bzhi rax, rbx, rcx");
-}
-```
-2. Execute and compare the result with the CPU.
-    - CPU
-        - RAX = 0x0x80000000ffffffff
-        - SF = 1
-    - QEMU
-        - RAX = 0xffffffff
-        - SF = 0"""
-additional = """This bug is discovered by research conducted by KAIST SoftSec."""