diff options
Diffstat (limited to 'results/classifier/qwen3:32b/reasoning/syscall/1926521')
| -rw-r--r-- | results/classifier/qwen3:32b/reasoning/syscall/1926521 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/results/classifier/qwen3:32b/reasoning/syscall/1926521 b/results/classifier/qwen3:32b/reasoning/syscall/1926521 new file mode 100644 index 00000000..686c2522 --- /dev/null +++ b/results/classifier/qwen3:32b/reasoning/syscall/1926521 @@ -0,0 +1,7 @@ +<think> +Okay, let's tackle this. The user is reporting a bug in QEMU-user related to how it handles the MADV_DONTNEED flag in the madvise syscall. The code in QEMU has a comment saying it's okay to ignore this hint, but the user argues that according to the Linux man pages, MADV_DONTNEED does affect memory semantics, specifically that after the call, accessing the memory should result in zero-filled pages for private mappings. The test case shows that when running under QEMU, the assertion fails because the memory isn't cleared, but it works on native Linux. + +So the issue is that QEMU's user-mode emulation is not properly handling the MADV_DONTNEED advice. The problem is in the syscall handling because the madvise system call is being processed incorrectly. The comment in the code treats it as a hint and ignores it, but the actual Linux behavior requires that the memory be invalidated in a way that affects subsequent accesses. Since the application relies on this behavior and QEMU isn't emulating it correctly, this is a syscall-related issue. The error occurs during the execution of the syscall, leading to incorrect program behavior. Therefore, the category should be syscall. +</think> + +syscall \ No newline at end of file |