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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-07-07 17:18:14 +0000 |
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| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-07-07 17:18:14 +0000 |
| commit | 61361f925d4914a6608a0076e64cc2399311ed5f (patch) | |
| tree | 6f717c2ff0b11d7493e60da9757818d119cfb541 /results/classifier/qwen3:32b/reasoning/syscall/1808563 | |
| parent | 238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd (diff) | |
| download | emulator-bug-study-61361f925d4914a6608a0076e64cc2399311ed5f.tar.gz emulator-bug-study-61361f925d4914a6608a0076e64cc2399311ed5f.zip | |
add new results
Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/syscall/1808563')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/syscall/1808563 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/syscall/1808563 b/results/classifier/qwen3:32b/reasoning/syscall/1808563 new file mode 100644 index 00000000..8aacdc33 --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/syscall/1808563 @@ -0,0 +1,19 @@ +<think> +Okay, let's try to figure out what category this bug report falls into. The user is talking about QEMU's behavior when using the QEMU_LD_PREFIX environment variable. They provided a demo where running QEMU with that prefix causes the root directory (/) to be remapped to a different directory. The strace output shows that when they open "/", it's actually opening the directory specified in QEMU_LD_PREFIX. The user also mentions that if they change the code to chdir("/"); opendir("."), it works fine. + +First, the problem seems to be related to how QEMU handles the QEMU_LD_PREFIX. The QEMU_LD_PREFIX is used to specify a directory that QEMU should treat as the root for the emulated system. So when the user runs QEMU with that prefix set, any access to "/" in the emulated environment should point to that directory. + +The issue here is that when they list the contents of /, QEMU is using the QEMU_LD_PREFIX directory instead of the real root. The strace shows that the openat call for "/" is remapped to the QEMU_LD_PREFIX path. That suggests that QEMU is intercepting the system calls related to directory access and modifying the paths based on the prefix. + +Now, the user is asking to classify this bug report into one of the three categories: instruction, syscall, or runtime. + +An "instruction" bug would be something related to incorrect CPU instructions being executed, like a wrong opcode or emulation issue. A "syscall" bug would involve errors in how system calls are handled, such as incorrect parameters passed to the OS or not handling a specific system call properly. "Runtime" errors are other issues that occur during the execution, perhaps configuration or logic errors that don't fit into the other two categories. + +In this case, the problem seems to be about how QEMU is handling the system calls for directory operations. The user's example shows that when they open "/", QEMU is redirecting it to the QEMU_LD_PREFIX path. The strace output confirms that the openat system call is being remapped. However, when they use chdir("/"); opendir("."), it works correctly. This suggests that the way QEMU is handling the openat system call with absolute paths is different from when the path is relative after a chdir. + +This might be a problem in how QEMU intercepts and modifies system calls related to file operations. Since the issue is directly related to the system call handling (specifically, the openat syscall) and how the paths are resolved based on the QEMU_LD_PREFIX, it seems like a syscall category issue. The QEMU is modifying the system call parameters (the path) based on the environment variable, which is part of its syscall interception logic. + +The fact that changing the code to use chdir and then opendir works correctly implies that the problem is in how QEMU processes the absolute path in the openat call. So the root cause is likely in the syscall handling code within QEMU. Therefore, the correct category should be "syscall". +</think> + +syscall \ No newline at end of file |