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authorChristian Krinitsin <mail@krinitsin.com>2025-06-10 17:04:21 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-10 17:04:21 +0000
commit7b681b9f9eedaad2f081ae11a32f459f5a1312ff (patch)
tree447529eab427f2cb024d33933794a27f30369c4d /results/classifier/016/assembly-x86/gitlab_semantic_bzhi
parentd804cb5b8f55b5e32c217e728fe02f6e53ecdf78 (diff)
downloadqemu-analysis-7b681b9f9eedaad2f081ae11a32f459f5a1312ff.tar.gz
qemu-analysis-7b681b9f9eedaad2f081ae11a32f459f5a1312ff.zip
add 17th version of the classifier, including results
Diffstat (limited to 'results/classifier/016/assembly-x86/gitlab_semantic_bzhi')
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@@ -0,0 +1,70 @@
+x86: 1.000
+i386: 0.989
+assembly: 0.989
+semantic: 0.987
+debug: 0.282
+register: 0.159
+operating system: 0.067
+kernel: 0.025
+files: 0.022
+TCG: 0.021
+performance: 0.021
+virtual: 0.020
+user-level: 0.013
+hypervisor: 0.010
+architecture: 0.009
+PID: 0.008
+device: 0.008
+peripherals: 0.007
+KVM: 0.004
+network: 0.004
+VMM: 0.003
+risc-v: 0.003
+socket: 0.003
+permissions: 0.003
+boot: 0.003
+alpha: 0.002
+graphic: 0.002
+vnc: 0.001
+ppc: 0.001
+mistranslation: 0.001
+arm: 0.000
+
+x86 BZHI semantic bug
+Description of problem
+The result of instruction BZHI is different from the CPU. The value of destination register and SF of EFLAGS are different.
+
+Steps to reproduce
+
+Compile this code
+
+
+void main() {
+    asm("mov rax, 0xb1aa9da2fe33fe3");
+    asm("mov rbx, 0x80000000ffffffff");
+    asm("mov rcx, 0xf3fce8829b99a5c6");
+    asm("bzhi rax, rbx, rcx");
+}
+
+
+
+Execute and compare the result with the CPU.
+
+CPU
+
+RAX = 0x0x80000000ffffffff
+SF = 1
+
+
+QEMU
+
+RAX = 0xffffffff
+SF = 0
+
+
+
+
+
+
+Additional information
+This bug is discovered by research conducted by KAIST SoftSec.