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authorChristian Krinitsin <mail@krinitsin.com>2025-07-06 16:43:19 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-06 16:43:19 +0000
commit238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd (patch)
treecd8a1b75ba7b3543eb7fe6857f408e7be4d9fd0b /results/classifier/deepseek-r1:32b/reasoning/manual-review/2333
parent96049c939b1916d80532630d63c14e04d5244f1d (diff)
downloademulator-bug-study-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.tar.gz
emulator-bug-study-238ec2b7cc1557d6f34c33cc482e4d0cd3e266dd.zip
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+<think>
+Okay, so I need to classify this bug report into one of three categories: instruction, syscall, or runtime. Let's break down what's happening here.
+
+The user is reporting that when they run their program under qemu-armeb (which emulates an ARM big-endian system), it crashes with a segmentation fault. They've identified that the issue occurs in the __clock_gettime64() function, specifically at line 42 of clock_gettime.c where it calls INTERNAL_VSYSCALL_CALL for vdso_time64.
+
+Looking at the stack trace, the crash happens during this VDSO call. The user also mentions that when they disable VDSO by rebuilding glibc without it, the problem goes away. This suggests that the issue is related to how QEMU handles the VDSO (Virtual Dynamic Shared Object) for ARM big-endian.
+
+VDSO is used to speed up certain system calls by handling them in userspace instead of making a full syscall into the kernel. If something's wrong with how QEMU implements this, it could cause crashes.
+
+The problem occurs only on qemu-armeb and not on qemu-arm (little endian), which indicates that there might be an endianness issue or some specific handling in QEMU for big-endian systems that isn't working correctly.
+
+Now, considering the categories:
+
+1. **Instruction**: This would involve a faulty instruction being executed. The crash is happening during a VDSO call, but it's not clear if the instruction itself is wrong.
+2. **Syscall**: Issues with system calls could be related to how QEMU handles them, especially in big-endian mode. Since VDSO is part of optimizing syscalls, this might fit.
+3. **Runtime**: This would cover other runtime errors not related to instructions or syscalls directly.
+
+Since the problem arises during a syscall (or rather, an optimized version via VDSO) and it's specific to how QEMU handles this in big-endian mode, I think the category is **syscall** because it's about the handling of system calls within the emulator.
+</think>
+
+The bug report deals with how QEMU handles the VDSO for ARM big-endian systems during a syscall optimization. Therefore, the issue falls under the syscall category.
+
+syscalls
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