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<think>
Okay, so I'm looking at this bug report about QEMU and socket type mapping issues for MIPS app-level emulation. The user is saying that when an application makes a socket call like socket(AF_INET, SOCK_STREAM, IPPROTO_TCP), it ends up using SOCK_DGRAM instead, which causes an error.
The problem arises because in the do_socket function within syscall.c, there's a remapping happening to handle how MIPS permutes socket types. However, this remapping doesn't account for additional flags like SOCK_NONBLOCK or SOCK_CLOEXEC that might be OR'ed with the type. So when these flags are present, they interfere with the permutation logic, leading to incorrect socket calls and errors.
I need to classify this bug into one of three categories: instruction, syscall, or runtime.
First, considering "instruction" would mean it's about a specific CPU instruction being handled incorrectly. But here, the issue is about system calls and their parameters, not about executing an instruction.
Next, looking at "runtime", which covers errors that happen during execution but aren't necessarily related to syscalls or instructions. However, the problem described is directly tied to how a syscall (socket) is being handled.
The third option is "syscall", which refers to issues with system calls. Since the bug report discusses incorrect handling of socket types in the do_socket function, which processes the socket syscall, this seems like it fits under the syscall category.
Therefore, the appropriate classification for this bug should be "syscall".
</think>
The issue pertains to how QEMU handles the socket system call parameters, specifically failing to account for certain flags when remapping socket types. This falls under incorrect handling of a system call.
syscalls
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