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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/deepseek-r1:14b/reasoning/hypervisor/655
parent4d9e26c0333abd39bdbd039dcdb30ed429c475ba (diff)
downloadqemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.tar.gz
qemu-analysis-dee4dcba78baf712cab403d47d9db319ab7f95d6.zip
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+<think>
+Okay, I'm trying to classify this bug report for QEMU. The user provided a crash when running Java on an s390x VM with SIGILL/ILL_PRVOPC at '__kernel_getcpu+0x8'. 
+
+First, I'll look at the error message: it's a SIGILL signal, which means illegal instruction. This suggests that the CPU encountered an instruction it couldn't execute. The problematic frame points to __kernel_getcpu in vdsolinux64.so.1.
+
+I know that s390x is IBM's mainframe architecture. QEMU provides emulation for this architecture, possibly using KVM as a hypervisor. The issue seems related to how certain system calls or instructions are handled by the emulator.
+
+The error occurs when Java runs, but the core of the problem is in '__kernel_getcpu', which is part of the kernel's vdso (virtual dynamic shared object). This indicates that the issue might be with how QEMU handles certain syscalls or traps on s390x. 
+
+Looking at the possible categories: hypervisor seems relevant because KVM/QEMU acts as a hypervisor for virtual machines. If '__kernel_getcpu' is misbehaving, it could be due to an issue in the hypervisor's handling of CPU-related instructions or system calls.
+
+Other categories like device, network, or graphics don't seem to fit here. It's more about the CPU and syscall handling, which falls under hypervisor functions.
+</think>
+
+The bug occurs when Java runs on an s390x VM and encounters a SIGILL due to an illegal instruction in __kernel_getcpu, likely related to how QEMU handles system calls or traps for this architecture. The issue is tied to the hypervisor layer (KVM) as it involves CPU-related instructions and syscall handling.
+
+**hypervisor**
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