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Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/runtime/1907969')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/runtime/1907969 | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/runtime/1907969 b/results/classifier/qwen3:32b/reasoning/runtime/1907969 new file mode 100644 index 00000000..6017587d --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/runtime/1907969 @@ -0,0 +1,15 @@ +<think> +Okay, let's see. The user provided a bug report about QEMU-i386 segfaulting when mixing threads and signals in a specific C program. The problem occurs when the program is statically linked with musl's libc and targets i386. The crash happens in TCG-generated code during a %gs-relative access. + +First, I need to classify this bug into one of the given categories: instruction, syscall, or runtime. + +The bug report mentions that the segfault occurs in TCG-generated code. TCG stands for Tiny Code Generator, which is part of QEMU's dynamic translation system. That makes me think it's related to how QEMU is handling the instruction execution. However, the problem arises from mixing threads and signals, which involves the runtime environment. + +But wait, the key here is that the crash is during a %gs-relative access. On x86, the %gs segment register is often used for thread-local storage (TLS). When threads are involved, the TLS setup might be different, especially with static linking and musl. QEMU needs to correctly emulate the handling of segment registers and TLS, which could be part of the runtime environment setup rather than a specific instruction. + +The user notes that removing pthread calls or the second raise() prevents the crash. So the issue is triggered by combining threads (which use TLS) and signals. The problem might be in how QEMU's runtime environment manages the TLS segments when signals are delivered, especially when using TCG. Since the crash is in the generated code handling the %gs access, it could be that the TCG code isn't properly setting up the segment registers or handling TLS base addresses when signals are involved. + +Since the categories are instruction, syscall, or runtime. Syscall would be if it's about system calls. Instruction would be if it's a specific CPU instruction being mishandled. Runtime seems to fit here because it's about the runtime environment's handling of threads and signals, particularly in how QEMU sets up TLS and segment registers during signal delivery. The TCG-generated code is part of QEMU's runtime execution, so the issue is in the runtime management of the guest environment. Therefore, the category is runtime. +</think> + +runtime \ No newline at end of file |