diff options
Diffstat (limited to 'results/classifier/deepseek-r1:32b/reasoning/syscall/1783362')
| -rw-r--r-- | results/classifier/deepseek-r1:32b/reasoning/syscall/1783362 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/results/classifier/deepseek-r1:32b/reasoning/syscall/1783362 b/results/classifier/deepseek-r1:32b/reasoning/syscall/1783362 new file mode 100644 index 00000000..53f2a12a --- /dev/null +++ b/results/classifier/deepseek-r1:32b/reasoning/syscall/1783362 @@ -0,0 +1,19 @@ +<think> +Okay, so I'm trying to classify this bug report related to QEMU. The issue is that when using mmap with len==0 on an ARM64 binary running under QEMU on an x86_64 host, it returns success (NULL, 0) instead of failure (MAP_FAILED, -1). + +First, I need to understand what the problem is. Mmap is a system call used for memory mapping files or allocating anonymous memory. According to the POSIX standard, if len is zero, mmap should return MAP_FAILED and set errno to EINVAL. But in this case, under QEMU's user emulation, it returns NULL and 0, which suggests a success, but that's incorrect. + +The user provided steps to reproduce the issue. They compiled a test program for ARM64 using a cross-compiler and ran it on an x86_64 host with QEMU-user. The program asserts that mmap should return MAP_FAILED when len is zero, but under QEMU, it doesn't, causing the assertion to fail. + +Looking at the possible categories: instruction, syscall, or runtime. + +"Instruction" would be if there was a problem with how an instruction was handled by the emulator. "Syscall" relates directly to system calls not behaving as expected, which seems to fit here because mmap is a syscall and it's returning incorrect values. "Runtime" might involve other issues during execution that aren't tied to specific instructions or syscalls. + +Since the issue revolves around how QEMU handles the mmap system call when len is zero, this points towards a problem in the syscall handling within QEMU. The bug is specifically about the behavior of mmap, which is a syscall, so it's likely categorized under "syscall." + +Additionally, the fact that running on a native ARM64 host works correctly (returns -1 and sets errno to 22) indicates that QEMU's emulation isn't correctly handling this edge case. This further supports the idea that the issue lies in how the syscall is being emulated by QEMU. +</think> + +The bug pertains to incorrect behavior of the mmap system call under QEMU when len is zero, which falls under the "syscall" category. + +syscalls \ No newline at end of file |