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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-06 16:43:19 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-06 16:43:19 +0000 |
| commit | 238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd (patch) | |
| tree | cd8a1b75ba7b3543eb7fe6857f408e7be4d9fd0b /results/classifier/deepseek-r1:32b/reasoning/instruction/1832422 | |
| parent | 96049c939b1916d80532630d63c14e04d5244f1d (diff) | |
| download | emulator-bug-study-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz emulator-bug-study-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip | |
add results
Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/instruction/1832422')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/instruction/1832422 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/instruction/1832422 b/results/classifier/deepseek-r1:32b/reasoning/instruction/1832422 new file mode 100644 index 00000000..0fee9e74 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/instruction/1832422 @@ -0,0 +1,19 @@ +<think> +Okay, I'm trying to classify this bug report into one of the given categories: instruction, syscall, or runtime. The issue described involves an SSE comparison operation where using an 8-bit immediate value that's too large causes a SIGILL signal in QEMU. The test case uses `cmppd xmm0,xmm0,0xd1`, and according to the documentation, only bits [2:0] are used for SSE, while AVX uses [4:0]. Currently, QEMU checks if the value is >=8 and throws an error; however, it should instead mask the higher bits. + +So, breaking this down, the problem arises from how QEMU handles the immediate value in the instruction. It's not correctly masking the bits as per the documentation, leading to an incorrect SIGILL when a larger value is used. This seems directly related to how the processor interprets the instruction and its operands, specifically the handling of immediate values. + +The categories are: + +1. Instruction: Faulty instructions described. +2. Syscall: Errors with system calls. +3. Runtime: Other runtime errors. + +Since this bug pertains to how an instruction is processed (the handling of the immediate value), it falls under the 'instruction' category. The issue isn't related to a system call or another runtime error outside of instruction processing. + +I think that's the right approach because the problem is about the CPU instruction decoding, specifically with the use of immediates in SSE operations. +</think> + +The bug report discusses an issue where QEMU improperly handles 8-bit immediate values in SSE comparison instructions, leading to a SIGILL signal when the value exceeds certain limits. The problem lies in how the instruction's operand is processed. + +**Answer:** instruction \ No newline at end of file |