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Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/instruction/796480')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/instruction/796480 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/instruction/796480 b/results/classifier/qwen3:32b/reasoning/instruction/796480 new file mode 100644 index 000000000..6531dc956 --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/instruction/796480 @@ -0,0 +1,13 @@ +<think> +Okay, let's try to figure out the category for this bug report. The user is talking about QEMU's user mode emulation. They have a problem where two different guest addresses (0x220000000 and 0x320000000) are being treated as the same because their lower 32 bits are identical. When the host is 32-bit Linux, the translation of memory references in QEMU seems to be causing this issue. + +The main issue here is that when the guest is 64-bit and the host is 32-bit, QEMU might be using the lower 32 bits for some part of the address translation. The user's test program shows that when accessing different addresses in the guest that differ in the upper bits, the host ends up reading from the same memory location because the 32-bit part is the same. This leads to incorrect behavior where different addresses in the guest are not properly distinguished. + +The problem seems to be related to how QEMU handles memory addresses during instruction execution in user mode. The test case compiles a 64-bit binary, runs it under QEMU on a 32-bit host, and the memory accesses are not being correctly translated. The addresses in the guest are 64-bit, but the host can't handle the full 64-bit address, so maybe QEMU is truncating or mishandling the address translation process, leading to the same physical address being used for different guest addresses that share the lower 32 bits. + +The user mentions that this is a problem with memory reference instructions. So when the guest program accesses different memory locations that differ in the upper bits beyond the 32-bit range, QEMU's translation on a 32-bit host isn't capturing that difference. This would be an issue with how the instructions are being emulated, specifically the memory addressing part. + +Since the issue is about how the instructions (specifically memory references) are being translated and executed by QEMU, this would fall under the "instruction" category. The bug isn't about system calls or runtime errors like memory allocation failures but rather about incorrect execution of instructions due to address handling. +</think> + +instruction \ No newline at end of file |