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Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/runtime/1648')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/runtime/1648 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/runtime/1648 b/results/classifier/deepseek-r1:32b/reasoning/runtime/1648 new file mode 100644 index 00000000..f84e4fb8 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/runtime/1648 @@ -0,0 +1,17 @@ +<think> +Okay, I'm trying to figure out how to classify this bug report about QEMU. The problem seems to be related to signal frames and alignment issues on x86_64. Let me go through it step by step. + +First, the user describes that when using a certain setup with QEMU, there's a segmentation fault happening due to incorrect alignment of `pretcode` in both `sigframe` and `rt_sigframe`. The issue arises because these structures aren't aligned properly, leading to a crash during execution. + +The bug report mentions that `pretcode` should be aligned as 16n minus the size of a pointer (`void*`), not just at a 16-byte boundary. This misalignment causes the stack pointer (rsp) to point incorrectly when a function is called, resulting in a segmentation fault. + +Looking at the provided code snippet from `qemu/linux-user/i386/signal.c`, it shows that `struct rt_sigframe` includes `pretcode`, followed by other structures. The current alignment makes `pretcode` start at a 16-byte boundary, which is incorrect because after a function call, the return address (which is part of `pretcode`) should be aligned properly considering the stack's behavior. + +The proposed fix adjusts the structure by adding an unused field with alignment to ensure that `fpstate` starts correctly. This changes the offset of `pretcode`, making it align as 16n minus 8 bytes on x86_64, which matches the expected behavior. + +Now, categorizing this bug: The issue isn't about a faulty instruction or a problem with system calls directly. Instead, it's an error in how data structures are managed at runtime, specifically during signal handling and stack alignment. This seems to fall under "runtime" errors because it affects the program execution flow and memory management dynamically. + +So, the category should be "runtime". +</think> + +runtime \ No newline at end of file |