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Diffstat (limited to 'results/classifier/deepseek-2/reasoning/manual-review/1445')
| -rw-r--r-- | results/classifier/deepseek-2/reasoning/manual-review/1445 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/results/classifier/deepseek-2/reasoning/manual-review/1445 b/results/classifier/deepseek-2/reasoning/manual-review/1445 new file mode 100644 index 00000000..4302f0eb --- /dev/null +++ b/results/classifier/deepseek-2/reasoning/manual-review/1445 @@ -0,0 +1,26 @@ +<think> + +</think> + +The provided log indicates a crash in the QEMU emulator due to a negative size parameter being passed to `memcpy`, which is detected by AddressSanitizer (ASan). This suggests there's a bug in the code that calls `memcpy` with an invalid size argument. The stack trace shows where this issue occurs, starting from `LLVMFuzzerInitialize` in `videzzo_qemu.c` and propagating through various QEMU initialization functions. + +### Key Points: +1. **Crash Cause**: A negative size parameter is passed to `memcpy`, which is invalid and causes the program to abort. +2. **Location**: The issue occurs in `asan_interceptors_memintrinsics.cpp` at line 22, which intercepts memory operations for ASan. +3. **Stack Trace**: + - The crash originates from `LLVMFuzzerInitialize`. + - It propagates through QEMU's initialization functions (`qemu_init`, `machine_run_board_init`, etc.). + - The root cause likely lies in the hardware device initialization (`tosa_init`, `tc6393xb_init`, `nand_init`), where a negative size is being passed to `memcpy`. + +### Steps to Investigate: +1. **Review Fuzzer Input**: + - Check the input provided to the fuzzer to ensure it's valid and doesn't trigger invalid memory operations. +2. **Inspect QEMU Initialization**: + - Look at the functions in `tosa_init`, `tc6393xb_init`, and `nand_init` to identify where an invalid size might be calculated or passed. +3. **Check Memory Operations**: + - Ensure all calls to `memcpy` (or similar functions) have valid, non-negative size parameters. +4. **Debug with ASan**: + - Use ASan's features to track memory allocations and detect the exact point where the invalid size is used. + +### Conclusion: +The crash indicates a bug in QEMU's initialization process when using the fuzzer. The negative size parameter passed to `memcpy` suggests an issue in how memory operations are handled during device initialization. Investigating the functions in `tosa_init`, `tc6393xb_init`, and `nand_init` will help identify the root cause of this bug. \ No newline at end of file |