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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/runtime/1550503 | |
| parent | 96049c939b1916d80532630d63c14e04d5244f1d (diff) | |
| download | qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip | |
add results
Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/runtime/1550503')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/runtime/1550503 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/runtime/1550503 b/results/classifier/deepseek-r1:32b/reasoning/runtime/1550503 new file mode 100644 index 000000000..2106fdf1b --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/runtime/1550503 @@ -0,0 +1,24 @@ +<think> +Okay, so I'm trying to figure out how to classify this bug report about QEMU. The problem seems to be in the helper.c file at line 5493. The error message says that an expression is always true, which suggests there's a logical issue here. + +Looking at the code snippet provided: + +(env->uncached_cpsr & CPSR_M) != CPSR_USER && + +And from cpu.h: + +#define CPSR_M (0x1fU) +#define CPSR_USER (CPSR_NZCV | CPSR_Q | CPSR_GE) + +So, CPSR_M is 0x1f, which is a mask for the lower 5 bits of the CPSR register. The line in helper.c is checking if the current mode (as determined by CPSR_M) is not equal to CPSR_USER. + +Wait, but CPSR_USER is defined as a combination of other flags: NZCV, Q, and GE. These are all status flags, not modes. So maybe there's a confusion here between mode bits and status bits. + +The issue arises because the code is using CPSR_USER in a comparison that should be checking the mode. Since CPSR_M only checks the lower 5 bits (the mode), comparing it to CPSR_USER (which has higher bits set) will always result in true, because CPSR_USER has more than just the lower 5 bits set. + +This kind of mistake would cause unintended behavior during runtime, as the condition is never false. So when QEMU is running, this check might incorrectly bypass certain operations, leading to bugs or incorrect state transitions. + +So, considering the categories: instruction, syscall, or runtime. This isn't about a specific instruction being faulty or a problem with system calls. It's an issue in how the code handles CPU states at runtime. Therefore, it falls under 'runtime' errors. +</think> + +runtime \ No newline at end of file |