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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/1805913 | |
| parent | 238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd (diff) | |
| download | qemu-analysis-61361f925d4914a6608a0076e64cc2399311ed5f.tar.gz qemu-analysis-61361f925d4914a6608a0076e64cc2399311ed5f.zip | |
add new results
Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/syscall/1805913')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/syscall/1805913 | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/syscall/1805913 b/results/classifier/qwen3:32b/reasoning/syscall/1805913 new file mode 100644 index 000000000..f192fca1f --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/syscall/1805913 @@ -0,0 +1,13 @@ +<think> +Okay, let's see. The user is describing a bug where readdir() returns NULL with errno EOVERFLOW when using 32-bit user-static QEMU on a 64-bit host. They provided a code example and steps to reproduce. The root cause seems to be in glibc's handling of getdents64, checking if inode numbers and offsets fit into 32-bit ranges. The problem arises because QEMU is passing through 64-bit inode numbers from the host kernel, which are too large for the 32-bit application's expectations. + +The user mentions that on real hardware with a 32-bit kernel, the inode numbers are 32-bit, so it works. But in QEMU's case, since it's emulating a 32-bit user space on a 64-bit host, the syscall (getdents64) returns 64-bit values. The glibc code checks for 32-bit compatibility and triggers EOVERFLOW when the values are out of range. + +The question is to classify this bug into one of the categories: instruction, syscall, or runtime. + +The issue is related to how syscalls are handled. Specifically, the getdents64 syscall is returning data that the 32-bit application can't handle because the values are too big. The problem stems from the syscall interface between the 32-bit user space and the 64-bit kernel. QEMU is supposed to translate syscalls appropriately, but here it's passing through the 64-bit inode numbers directly, which leads to the overflow. + +Since the core of the problem is the syscall (getdents64) returning values that are incompatible with the 32-bit application, the correct category would be "syscall". The error arises from how the syscall's data is handled between the host and the emulated environment. +</think> + +syscall \ No newline at end of file |