diff options
Diffstat (limited to 'results/classifier/deepseek-r1:14b/reasoning/manual-review/939')
| -rw-r--r-- | results/classifier/deepseek-r1:14b/reasoning/manual-review/939 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:14b/reasoning/manual-review/939 b/results/classifier/deepseek-r1:14b/reasoning/manual-review/939 new file mode 100644 index 000000000..4219880ee --- /dev/null +++ b/results/classifier/deepseek-r1:14b/reasoning/manual-review/939 @@ -0,0 +1,17 @@ +<think> +Okay, so I have to classify this bug report in QEMU. Let's see what the problem is. + +The user mentioned that when using the mipsn32el emulator in QEMU, running memory-intensive programs like tar or gcc causes segfaults at random. They provided a test program that allocates large blocks of memory repeatedly and observed that after several allocations, it crashes. + +Looking at the output, for mips3 n32, the pointer addresses go up to 0x7d8c4010 and then crash with an unhandled CPU exception. For mips2 o32, it correctly returns nil when memory is exhausted, but in n32 mode, it's trying to allocate beyond what seems like the upper limit of pointers. + +So, the issue here is related to how QEMU handles pointer allocations in user-mode for MIPS N32. Since N32 uses 31 bits for pointers (with one bit for address space), it can't handle addresses beyond a certain point. The emulator isn't correctly managing memory allocation, leading to invalid pointer values and subsequent crashes. + +This seems like an issue with how QEMU translates the user-mode assembly instructions, specifically in the area of memory management and pointer handling. It might be related to the translation from the source architecture (MIPS) to the target execution environment within TCG or another acceleration method. + +The key point is that the emulator isn't correctly enforcing the 32-bit address space limitations for N32, leading to invalid pointers and crashes. This sounds like a problem in the translation of user-mode instructions, particularly in memory addressing and allocation logic. +</think> + +The bug report describes an issue where QEMU's mipsn32el emulator improperly handles pointer allocations, causing segfaults when trying to allocate beyond the 31-bit address space allowed by N32. The crash occurs because QEMU doesn't correctly manage memory in user-mode for MIPS N32, leading to invalid pointers. + +**Classification:** This issue is classified under **User-mode Translation Issues**, specifically within the memory management and pointer handling logic of the TCG (Tiny Code Generator) or similar acceleration methods used by QEMU. \ No newline at end of file |