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Diffstat (limited to 'results/classifier/deepseek-2-tmp/reasoning/KVM/1863819')
| -rw-r--r-- | results/classifier/deepseek-2-tmp/reasoning/KVM/1863819 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2-tmp/reasoning/KVM/1863819 b/results/classifier/deepseek-2-tmp/reasoning/KVM/1863819 new file mode 100644 index 00000000..34e3509e --- /dev/null +++ b/results/classifier/deepseek-2-tmp/reasoning/KVM/1863819 @@ -0,0 +1,16 @@ +<think> +Alright, let's try to classify this bug report. The user is experiencing crashes when using GDB to repeatedly single-step a userspace process in a KVM guest under QEMU. They mention that this happens specifically with Windows 7 x64 guests on an Ubuntu host and that it's reproducible across different QEMU versions. + +The key points are the use of KVM and the crash occurring during single-stepping with GDB. The exception is 0x80000004, which typically relates to a single-step trap in Windows. Since this behavior was present in older kernels but fixed in a newer one via a kernel commit, it suggests that the issue might be related to how KVM handles certain instructions or debug events. + +The user also notes that TCG guests hang instead of crashing, pointing towards an issue within QEMU's handling when KVM is enabled. Since the problem occurs across multiple QEMU versions and involves GDB interaction with a KVM guest, it seems like the bug is directly related to how KVM interacts with the virtualized environment during debugging. + +Looking at the possible categories, "KVM" stands out because the issue arises specifically under KVM mode. Other categories like "hypervisor" could also be relevant since KVM acts as a hypervisor, but "KVM" is more specific here. +</think> + +The bug report describes an issue where using GDB to repeatedly single-step in a userspace process within a KVM guest causes the guest application to crash with a 0x80000004 exception. This behavior occurs across multiple QEMU versions and affects Windows 7 x64 guests on Ubuntu hosts, with similar issues reported for other guests as well. The problem was previously causing hangs in older kernel versions but appears fixed by a specific kernel commit. Since the issue is observed when using KVM and not in TCG guests, it points to a problem within QEMU's handling of single-step events under KVM. + +The category that best fits this bug report is "KVM" since the crash occurs specifically when running under KVM mode, and the behavior is linked to how KVM interacts with the debugging process. + +**Answer:** +KVM \ No newline at end of file |