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Diffstat (limited to 'results/classifier/mode-deepseek-r1:32b/reasoning/user/2336')
| -rw-r--r-- | results/classifier/mode-deepseek-r1:32b/reasoning/user/2336 | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/results/classifier/mode-deepseek-r1:32b/reasoning/user/2336 b/results/classifier/mode-deepseek-r1:32b/reasoning/user/2336 new file mode 100644 index 000000000..a53e729f0 --- /dev/null +++ b/results/classifier/mode-deepseek-r1:32b/reasoning/user/2336 @@ -0,0 +1,25 @@ +<think> +Okay, so I'm trying to figure out whether this QEMU crash is a user-mode or system-mode bug. Let me start by understanding the problem description. + +The user reports that when they run qemu-x86_64 on a LoongArch machine with a static hello test built on x86_64, it results in a Bus error (core dumped). The steps are: + +1. Built a static hello test on an x86_64 machine. +2. Built qemu-x86_64 on LoongArch. +3. Ran qemu-x86_64 hello on LoongArch. + +The additional information mentions that the issue started after commit 45bf0e7aa648369cf8ab2333bd20144806fc1be3, and there's a log file with debug information from running QEMU with various debug flags: -d in_asm,op,out_asm,strace. + +So, first, I need to figure out what QEMU is doing here. QEMU can run in user mode or system mode. In user mode, it translates individual CPU instructions and runs them on the host, which allows executing binaries compiled for a different architecture (like x86_64 on LoongArch). System mode involves emulating an entire computer with peripherals, devices, etc. + +In this case, the user is running qemu-x86_64, which I believe is QEMU in user mode because they're trying to run an x86_64 binary on a different architecture. So it's about instruction translation without full system emulation. + +The error is a Bus error, which usually indicates an invalid memory access, like dereferencing a null pointer or accessing an unmapped page. Since the log includes debug output from in_asm and out_asm, it suggests that QEMU is translating instructions but might be mishandling something during this process. + +Looking at the commit mentioned, I don't have the details, but since the issue started after that commit, it's likely a change related to instruction translation or memory handling. In user mode, such issues often come from incorrect handling of registers or stack operations when translating between architectures. + +The strace log might show system calls made by QEMU before crashing, which could indicate if there was an attempt to access invalid memory or other low-level issues. The Bus error suggests that during the execution of the translated code, QEMU is accessing a bad address, possibly due to incorrect translation logic. + +Since this is about running a binary in user mode and translating its instructions, it falls under user-mode emulation rather than system-mode where peripherals and devices are involved. +</think> + +user \ No newline at end of file |