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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 19:39:53 +0200
commitdee4dcba78baf712cab403d47d9db319ab7f95d6 (patch)
tree418478faf06786701a56268672f73d6b0b4eb239 /results/classifier/zero-shot/118/kernel/1119686
parent4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff)
downloademulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz
emulator-bug-study-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip
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+kernel: 0.857
+architecture: 0.855
+debug: 0.815
+x86: 0.802
+files: 0.785
+virtual: 0.760
+hypervisor: 0.754
+semantic: 0.745
+graphic: 0.740
+device: 0.726
+ppc: 0.720
+permissions: 0.706
+network: 0.696
+performance: 0.687
+user-level: 0.680
+socket: 0.664
+i386: 0.654
+vnc: 0.624
+peripherals: 0.620
+risc-v: 0.599
+register: 0.598
+arm: 0.594
+KVM: 0.589
+VMM: 0.559
+TCG: 0.554
+PID: 0.547
+boot: 0.508
+assembly: 0.381
+mistranslation: 0.327
+
+Incorrect handling of icebp
+
+Wine conformance suite tests the behavior of various low-level Windows API functions. One of the tests involves checking the interaction of breakpoints and exceptions, and in particular the 'icebp' breakpoint. This test works on a Windows XP machine running either on the metal or in VMware ESX but fails when run in QEmu.
+
+To reproduce the issue grab the attached 'exception.exe' file and run it. If you get 'Test failed' lines like below then it means the problem is still present:
+
+    exception.c:202: exception 0: 80000004 flags:0 addr:003F0000
+    exception.c:208: Test failed: 0: Wrong exception address 003F0000/003F0001
+    exception.c:214: this is the last test seen before the exception
+    exception: unhandled exception 80000004 at 003F0000
+    exception.c:202: exception 0: c0000027 flags:2 addr:7C80E0B9
+    exception.c:205: Test failed: 0: Wrong exception code c0000027/80000004
+    exception.c:208: Test failed: 0: Wrong exception address 7C80E0B9/003F0001
+
+Note that this bug was not present in QEmu 1.1.2+dfsg-5 (Debian Testing) but is now present in 1.4.0~rc0+dfsg-1exp (Debian Experimental).
+
+
+
+This bug is still present in QEMU 1.6.0 (as per Debian's qemu-system-x86 1.6.0+dfsg-1 package).
+
+
+This bug is still present in QEMU 1.7.0 (as per Debian's qemu-system-x86 1.7.0+dfsg-3 package).
+
+The patch submitted upstream was for the kernel. Is this also a bug in QEMU when TCG is disabled?
+
+s/TCG/KVM/ - Is this also a bug when KVM is disabled?
+
+[Expired for QEMU because there has been no activity for 60 days.]
+
+Actually this got fixed by the following Linux kernel commit:
+
+https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fd2a445a94d2ab6b39fb623dc02fee48d01a565a
+
+commit	fd2a445a94d2ab6b39fb623dc02fee48d01a565a (patch)
+
+KVM: VMX: Advance rip to after an ICEBP instruction
+When entering an exception after an ICEBP, the saved instruction
+pointer should point to after the instruction.
+
+This fixes the bug here: https://bugs.launchpad.net/qemu/+bug/1119686
+
+Signed-off-by: Huw Davies <email address hidden>
+Reviewed-by: Jan Kiszka <email address hidden>
+Signed-off-by: Marcelo Tosatti <email address hidden>
+
+