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Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/instruction/514')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/instruction/514 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/instruction/514 b/results/classifier/qwen3:32b/reasoning/instruction/514 new file mode 100644 index 000000000..6cabb2083 --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/instruction/514 @@ -0,0 +1,13 @@ +<think> +Okay, let me try to figure this out. The user is reporting a bug related to QEMU and MTE (Memory Tagging Extension) generating a false positive tag check fault when using the SP (stack pointer) as the base register in a store instruction. + +First, the problem description says that when executing an SP-based store with an offset, a tag check fault occurs. But according to the ARM specification, such accesses should be Tag Unchecked. The user provided example code generated by Clang, which uses "stp x29, x30, [sp, #-64]!" and "str x23, [sp, #16]". The first instruction causes an exception. The ESR_EL1 value indicates a Synchronous Tag Check Fault. The user mentions that QEMU might be incorrectly generating this exception for SP-based loads/stores with offsets. + +The ARM spec says that when SP is the base register, whether with an immediate offset or not, the access should be Tag Unchecked. That means MTE shouldn't check the tag bits for these accesses, so no exception should be triggered. But in QEMU's emulation, it's happening. So the issue is that QEMU's handling of these SP-based instructions is not aligning with the ARM spec regarding MTE. + +The user is pointing out that QEMU is erroneously generating the tag mismatch exception. The categories to choose from are instruction, syscall, or runtime. + +Since the problem is about the execution of a specific instruction (stp and str with SP) and how QEMU emulates that instruction's behavior regarding MTE, this seems to be an issue with the instruction emulation in QEMU. The syscall category is for system call errors, which isn't the case here. Runtime errors are for other runtime issues, but the problem is specifically about the instruction's handling. Therefore, the category should be "instruction". +</think> + +instruction \ No newline at end of file |