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Diffstat (limited to 'results/classifier/deepseek-r1:14b/reasoning/manual-review/1389')
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diff --git a/results/classifier/deepseek-r1:14b/reasoning/manual-review/1389 b/results/classifier/deepseek-r1:14b/reasoning/manual-review/1389 new file mode 100644 index 00000000..588fbe80 --- /dev/null +++ b/results/classifier/deepseek-r1:14b/reasoning/manual-review/1389 @@ -0,0 +1,22 @@ +<think> +Alright, I'm trying to figure out how to classify this bug report related to QEMU. The user provided a detailed description of an issue they're encountering after updating to QEMU 7.2.0. Their custom bootloader and OS worked fine with version 7.0.0 but now throws a page fault exception when running on 7.2.0. + +First, I need to understand the problem. The user shared their assembly code where the issue occurs in `map_pd`. They're getting a page fault at address `0x20c000`, which they can read using GDB. From the exception details, it looks like an access violation happened while trying to write to that address. + +Looking at the provided assembly code, I notice it's setting up page directories (PD) and PD Pointers Tables (PDPT). The loop in `map_pd` is iterating over 512 entries, which seems correct. However, there might be a mistake in how they're handling the current block or when moving to the next. + +The user also mentioned checking the changelogs between 7.1 and 7.2 but didn't find anything obvious. So, perhaps this is related to changes in how QEMU handles virtual memory, especially for x86 emulated systems. + +Now, considering the possible categories: the issue seems to be with the translation or handling of assembly instructions by QEMU's CPU emulator. It's not a device-related problem, nor graphics or networking issues. The exception is occurring during the execution of custom assembly code, which suggests it's related to how QEMU translates or executes x86 instructions. + +The bug report involves an incorrect mapping or access in the emulated memory space, likely due to changes in QEMU's CPU or MMU (Memory Management Unit) emulation between versions. This points towards a problem in the translation layer where assembly code is converted into host machine code. + +I think this falls under the 'Translation' category because it's about how QEMU handles x86 instructions and their memory accesses, leading to an unexpected page fault when running on 7.2.0 but not on 7.0.0. +</think> + +The issue described is likely related to changes in how QEMU emulates x86 instructions or manages virtual memory between versions 7.1 and 7.2. Specifically, the problem occurs during the execution of custom assembly code that sets up page tables, leading to a page fault. This suggests an issue with the translation of assembly instructions or memory management in QEMU. + +**Classification:** +- **Translation** + +The bug is due to changes in how QEMU handles x86 instruction translation or virtual memory, causing incorrect behavior when running the custom OS on version 7.2.0 compared to 7.0.0. \ No newline at end of file |