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authorChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:15 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-07-08 13:28:28 +0200
commit5aa276efcbd67f4300ca1a7f809c6e00aadb03da (patch)
tree9b8f0e074014cda8d42f5a97a95bc25082d8b764 /results/classifier/deepseek-r1:32b/reasoning/syscall/1761153
parent1a3c4faf4e0a25ed0b86e8739d5319a634cb9112 (diff)
downloademulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.tar.gz
emulator-bug-study-5aa276efcbd67f4300ca1a7f809c6e00aadb03da.zip
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+<think>
+Okay, so I'm trying to classify this bug report related to QEMU. Let me read through it carefully and understand what's going on here.
+
+The issue is about mmap behaving incorrectly when dealing with large files on a 64-bit host running a 32-bit executable via QEMU. The user provided a test program, `test_mmap.c`, which they compiled as a 32-bit binary. When they run it under qemu-i386, the output is "Incorrect data 1", indicating that something went wrong with the mmap operation.
+
+The problem seems to occur when the offset exceeds 4GiB, which makes sense because 32-bit systems can't address more than that due to their limited pointer size. So, when trying to mmap a file beyond 4GB on a 64-bit host using a 32-bit guest executable via QEMU, it's failing.
+
+Looking at the possible categories: instruction, syscall, runtime. The user is asking which category this bug falls into. Let me think about each possibility.
+
+First, "instruction" would imply that there's an issue with how specific instructions are handled by QEMU. This doesn't seem to be the case here since the problem isn't about executing a particular opcode incorrectly but rather handling file mappings.
+
+Next, "syscall": this relates to errors when making system calls. Mmap is indeed a system call (sys_mmap), so if QEMU is mishandling it, especially across 32/64-bit boundaries, that would fit here. The issue arises during the mmap operation, which involves handling pointers and addresses correctly between different architectures.
+
+Lastly, "runtime" is for other runtime errors not covered by instructions or syscalls. Since this seems tied to how system calls are emulated, especially involving address spaces and memory mappings, it's more likely a syscall issue rather than a general runtime problem.
+
+Putting it all together: the bug is related to QEMU's handling of mmap syscalls when the guest is 32-bit and the host is 64-bit. Therefore, this should be categorized under "syscall".
+</think>
+
+The bug relates to how QEMU handles the mmap system call across different architectures, specifically between a 64-bit host and a 32-bit guest executable.
+
+syscalls
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