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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/syscall/690 | |
| parent | 96049c939b1916d80532630d63c14e04d5244f1d (diff) | |
| download | qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz qemu-analysis-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip | |
add results
Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/syscall/690')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/syscall/690 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/syscall/690 b/results/classifier/deepseek-r1:32b/reasoning/syscall/690 new file mode 100644 index 000000000..020873453 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/syscall/690 @@ -0,0 +1,23 @@ +<think> +Okay, so I need to classify this bug report into one of three categories: instruction, syscall, or runtime. Let me read through the problem description carefully. + +The issue is that when running 32-bit qemu-arm-static on an x86_64 host with versions 5.1 and later, GCC fails because it can't allocate a memory range for the guest. The error message is "Allocating guest commpage: Operation not permitted." This problem doesn't happen in QEMU version 5.0, so something changed between 5.0 and 5.1 that introduced this bug. + +The user mentions that this isn't reproducible on all systems—it's happening on Arch Linux and some Debian setups but not others. They also note that the sysctl parameter `vm.mmap_min_addr` affects the outcome. Depending on its value, the error changes or doesn't occur at all. + +Looking into the steps to reproduce, they built a Docker container and ran GCC inside using the older QEMU version 50. The problem arises when trying to allocate memory in the guest space, which suggests it's related to how QEMU is handling memory mappings or syscalls. + +The error message mentions "Operation not permitted," which often relates to permissions issues, possibly during a system call like mmap. Since the issue occurs at runtime and involves memory allocation within the guest environment, it seems like this isn't an instruction-level problem but rather something happening during execution, likely related to how QEMU interacts with the host's kernel when making certain syscalls. + +So, considering the categories: + +- Instruction: Not applicable because there's no mention of a specific CPU instruction causing the issue. +- Syscall: Possible since it involves memory allocation (mmap) and permissions. The error could be due to changes in how QEMU handles these syscalls across different versions or configurations. +- Runtime: Also possible, as the problem occurs during runtime when trying to allocate guest memory. + +But given that the problem is tied to kernel parameters like `vm.mmap_min_addr` and involves a syscall returning an error related to permissions, it's more likely a syscall issue. The underlying cause seems to be how QEMU or the host handles these syscalls in newer versions. +</think> + +The bug report indicates issues with memory allocation during runtime, specifically when trying to allocate guest memory via mmap syscalls. This points to a problem with system calls and their handling. + +**Answer:** syscall \ No newline at end of file |