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Diffstat (limited to 'results/classifier/deepseek-1/reasoning/assembly/1904210')
| -rw-r--r-- | results/classifier/deepseek-1/reasoning/assembly/1904210 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/results/classifier/deepseek-1/reasoning/assembly/1904210 b/results/classifier/deepseek-1/reasoning/assembly/1904210 new file mode 100644 index 00000000..df1da3bb --- /dev/null +++ b/results/classifier/deepseek-1/reasoning/assembly/1904210 @@ -0,0 +1,19 @@ +<think> +Okay, let's try to figure out the category for this bug report related to QEMU. The user provided some detailed logs and context, so I'll go through it step by step. + +First, the bug report mentions that a binary crashes with 'uncaught target signal SIGILL' even though it has registered a handler for SIGILL. This happens when running under QEMU's arm emulation. The user provided logs from two different QEMU versions (2.5.0 and 2.11.1) showing how the program behaves. + +Looking at the logs, in version 2.5.0, after some system calls, the binary reads input and then writes "wrong!" to stdout, leading to an illegal seek error and exit. In 2.11.1, similar steps happen, but after reading 'flag{', it triggers SIGILL signals, causing QEMU to crash because the handler isn't invoked again. + +The user suspects that the binary relies on older signal handling in QEMU which doesn't work correctly anymore. They mention that the binary uses an illegal instruction "udf 1", which causes a SIGTRAP on real hardware but is handled as SIGILL in QEMU. The issue seems to be related to how QEMU emulates signals, particularly SIGILL. + +The user also points out that Peter's patch was included to handle such cases correctly by delivering SIGTRAP instead of SIGILL for illegal instructions like "udf 1". They concluded that the binary doesn't run on real hardware either and suggests any remaining issues are with the binary itself, not QEMU. + +So, focusing on the problem: it's about how signals (specifically SIGILL) are handled when running a guest program under QEMU. The bug arises from incorrect signal emulation leading to unhandled signals and crashes. This falls under the category of handling exceptions or signals correctly in the emulator. + +Looking at the possible categories provided, 'signal(SIGILL)' is directly related to how signals are managed in the user-mode assembly or the target's signal handling. Since this involves assembly-level operations (like illegal instructions) and their corresponding signal responses, it fits under 'assembly' category. +</think> + +The bug report discusses issues with QEMU's handling of SIGILL signals when running a binary that executes an illegal instruction ("udf 1"). The problem arises because the binary relies on older signal handling behavior in QEMU which doesn't work correctly in newer versions. This is related to how signals are emulated, particularly for illegal instructions, which falls under the 'assembly' category as it involves low-level instruction handling and exception management. + +**Answer:** assembly \ No newline at end of file |