diff options
| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-06 16:43:19 +0000 |
|---|---|---|
| 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/2372 | |
| parent | 96049c939b1916d80532630d63c14e04d5244f1d (diff) | |
| download | qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip | |
add results
Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/instruction/2372')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/instruction/2372 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/instruction/2372 b/results/classifier/deepseek-r1:32b/reasoning/instruction/2372 new file mode 100644 index 000000000..2294d62cc --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/instruction/2372 @@ -0,0 +1,11 @@ +<think> +Alright, so I'm trying to figure out what category this bug falls into. The problem description talks about an issue with the AArch64 UMOPA/UMOPS instructions, specifically their 4-way variant. It mentions that the helper function in QEMU isn't correctly converting element types before multiplication. + +Looking at the provided code, the helper function DEF_IMOP_64 is defined, and it's used for umopa_d. The issue arises because when multiplying elements from the source registers (which are 16-bit), they're being cast to uint16_t but then implicitly converted to int32_t during multiplication. This leads to incorrect sign extension instead of zero extension, which affects the sum calculation. + +The steps to reproduce involve writing a test program that uses these instructions and observing an incorrect output when run on QEMU with the bug. The expected result after fixing should produce different values, indicating that the helper function's type casting is the root cause. + +Since this problem is related to how specific ARM instructions are handled in the emulator (QEMU), it falls under instruction processing. The issue isn't a syscall or a runtime error in general; instead, it's about QEMU misinterpreting or incorrectly executing these particular AArch64 instructions. +</think> + +instruction \ No newline at end of file |