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Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/syscall/654')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/syscall/654 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/syscall/654 b/results/classifier/deepseek-r1:32b/reasoning/syscall/654 new file mode 100644 index 00000000..e5f161d4 --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/syscall/654 @@ -0,0 +1,25 @@ +<think> +Okay, so I need to classify this bug report about QEMU's strace log output getting mangled. The user provided a detailed description and some code snippets. Let me break it down step by step. + +First, the problem is that when using strace logging in QEMU, the syscall entries aren't being printed atomically. That means parts of a single syscall log can be interrupted by other logs, making them hard to parse. For example, the mmap syscalls are getting split up because another part of the code (like page logging) writes to the log file in between. + +Looking at the steps to reproduce: running a dynamically linked binary or one that uses mmaps causes this issue. The user attached an example log where the mmap entries are interrupted. + +The user believes the bug is due to two main reasons: +1. In `linux-user/syscall.c`, the strace syscall entry isn't output all at once but split into two parts—`print_syscall` and `print_syscall_ret`. These functions call `qemu_log` multiple times, which can allow other log messages to interleave. +2. For mmap syscalls specifically, `log_page_dump` is called between these two print functions, causing the mangled output. + +They also mention that inside `qemu_log`, the logfile lock is obtained and released each time. This means there's a possibility of another thread writing to the log file while a syscall entry is being printed across multiple `qemu_log` calls. + +Now, classifying this bug into one of the categories: instruction, syscall, or runtime. + +- Instruction: Relates to faulty instructions, like wrong assembly or code execution. Doesn't fit here because it's about logging, not executing instructions. +- Syscall: Issues directly with system calls. This seems relevant since the problem occurs during strace logging of syscalls. +- Runtime: Other runtime errors. While this is a runtime issue, the specific problem relates to how syscalls are logged. + +The main issue is that the syscall logs are being interrupted, which affects the integrity of the log output for syscalls. Therefore, it's more accurately classified under 'syscall' because it pertains directly to the logging mechanism of system calls. +</think> + +The bug report deals with the improper logging of system call entries in QEMU's strace output, specifically when syscalls like mmap are interrupted by other log messages. This issue is rooted in how syscall logs are split across multiple non-atomic `qemu_log` calls, allowing interleaving from other parts of the code. + +**syscall** \ No newline at end of file |