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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-05 07:53:40 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-05 07:53:40 +0000 |
| commit | 40bbb77d4dfebff4f99c2f90b2c0db737b0ecc5a (patch) | |
| tree | b48e8ed73df5afe4df4f14b919a092200cb32a80 /results/classifier/mode-deepseek-r1:32b/reasoning/user/2373 | |
| parent | 55df9e6905dc57854bea8e34d1e71ea383eb0352 (diff) | |
| download | emulator-bug-study-40bbb77d4dfebff4f99c2f90b2c0db737b0ecc5a.tar.gz emulator-bug-study-40bbb77d4dfebff4f99c2f90b2c0db737b0ecc5a.zip | |
add deepseek classification results: classifies into user and system mode
Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/user/2373')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/user/2373 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/user/2373 b/results/classifier/mode-deepseek-r1:32b/reasoning/user/2373 new file mode 100644 index 00000000..35437c23 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/user/2373 @@ -0,0 +1,13 @@ +<think> +Okay, so I'm trying to figure out whether this bug is user-mode or system-mode related. The problem is about a bug in the QEMU emulator's handling of AArch64 FMOPA/FMOPS instructions, specifically when they're used for widening matrix multiplications. + +From what I understand, these instructions are part of the SVE (Scalable Vector Extension) and SME (SME is another extension, maybe?) instruction sets. The issue arises because QEMU isn't correctly handling the FZ16 flag; instead, it's only considering the FZ flag when converting 16-bit floating-point values to 64 bits during these operations. + +The user provided a test case that uses these instructions and expects certain output but gets zeros due to the bug. The test code is written in C with inline assembly, using SMELD (SME Load) and other SVE/SME-related instructions. This suggests it's executing in user space since it's a regular application without any kernel or privileged operations. + +QEMU's role here is as an emulator for AArch64, running the compiled binary and executing these user-space instructions. The bug is within how QEMU interprets and executes these specific floating-point matrix operations with the given flags. Since the problem lies in the emulation of user-level instructions without involving any system calls or privileged operations, it's a user-mode issue. + +I don't see any interaction with hardware devices, I/O, or kernel-specific features here. It's purely about how the CPU instructions are emulated when running a userspace program. +</think> + +user
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