diff options
Diffstat (limited to 'results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction')
9 files changed, 103 insertions, 0 deletions
diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1022 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1022 new file mode 100644 index 00000000..a536c9c2 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1022 @@ -0,0 +1,9 @@ +The issue arises when QEMU's RISC-V simulation encounters the `vsra.vx` instruction, leading to a segmentation fault. The backtrace points to a problem within the code generation buffer, specifically related to how the instruction is being processed. + +The bug is tied to an incorrect or unsupported handling of the vector instruction `vsra.vx`. This suggests that there's either a mistake in the implementation of this specific instruction within QEMU or perhaps missing support for it under certain configurations. + +Given that the segmentation fault occurs during the execution of a particular instruction, the most appropriate category for this bug is: + +**instruction** + +This classification indicates that the problem lies within how a specific CPU instruction is handled by QEMU. \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1824344 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1824344 new file mode 100644 index 00000000..984f0de0 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1824344 @@ -0,0 +1,18 @@ +The issue described involves an incorrect error code being set when executing certain return instructions (iret/iretq/retf) in user space under specific conditions, leading to potential misclassification of page faults by the guest OS. This is related to how QEMU handles instruction execution and exception handling. + +**instruction** + +This classification is appropriate because the bug pertains to the behavior of specific x86 instructions (iret, iretq, retf) within QEMU's emulation layer, particularly concerning error code generation during page faults. The incorrect setting of bits in the error code directly relates to how these instructions are handled by QEMU when a page fault occurs. + +The problem arises from QEMU not correctly setting bit 2 of the error code pushed onto the stack when such an instruction causes a page fault. In x86 architecture, bit 2 of the error code indicates whether the fault occurred in user mode (bit clear) or supervisor mode (bit set). If this bit is incorrectly left unset, the guest operating system may misinterpret the nature of the fault, potentially leading to erroneous kernel panic situations. + +Furthermore, the provided test case involves executing a small C program that attempts to return from a function using `retf` with an invalid stack pointer. This triggers a page fault, and QEMU's handling (or mishandling) of this scenario leads to the incorrect error code being pushed. The guest OS, relying on these codes for accurate exception handling, may then behave incorrectly. + +The fact that this bug is reproducible only when using specific CPU configurations (like those with SMAP support) suggests that it is tied to how QEMU emulates certain CPU features and handles exceptions in user space versus kernel space. The classification as an "instruction" issue is therefore most fitting because the root cause lies in the emulation of x86 instructions and their associated exception handling mechanisms. + +In summary, this bug report centers around a problem with instruction-level behavior within QEMU's emulation layer, specifically concerning error code generation during page faults triggered by certain return instructions. Therefore, categorizing it under "instruction" accurately reflects the nature of the issue. + +**Final Answer** +The appropriate category for this bug is: + +\boxed{instruction} \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1833 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1833 new file mode 100644 index 00000000..e8dd75d3 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1833 @@ -0,0 +1,21 @@ +The issue described pertains to an incorrect implementation of the ARM64 SME ST1Q instruction within QEMU, leading to improper data storage. This is classified under **instruction** as it involves a specific faulty CPU instruction implementation. + +**Step-by-Step Explanation:** + +1. **Understanding the Bug:** The problem lies in how the `ST1Q` (Store 128-bit element) SME instruction is implemented in QEMU. Instead of correctly storing 16 bytes per 128-bit element, it only stores 9 bytes. + +2. **Identifying the Cause:** The incorrect behavior was traced to a specific line in QEMU's source code (`sme_helper.c`), where an offset adjustment used `+1` instead of `+8`, leading to improper data alignment and storage. + +3. **Reproducing the Issue:** A test program was provided that demonstrates the bug. When run, it shows that after executing the `ST1Q` instruction, only a portion of the expected bytes are correctly copied from source to destination memory locations. + +4. **Impact Analysis:** This bug affects data integrity when using SME instructions in QEMU, particularly for contiguous store operations involving 128-bit elements. Such errors can lead to silent data corruption or incorrect program behavior in applications relying on these instructions. + +5. **Solution:** The fix involves correcting the offset adjustment from `+1` to `+8`, ensuring that each 128-bit element is stored correctly as 16 bytes, aligning with the expected behavior of the `ST1Q` instruction. + +**Classification: Instruction** + +The bug report revolves around an issue with a specific CPU instruction's implementation within QEMU. Therefore, it falls under the **instruction** category. + +```plaintext +instruction +``` \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1898954 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1898954 new file mode 100644 index 00000000..b388f888 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1898954 @@ -0,0 +1,5 @@ +The user provided a detailed bug report related to QEMU where executing an `f1` opcode causes issues on Windows but works fine elsewhere. The problem seems to be specific to how QEMU handles certain instructions, particularly the `f1` opcode. + +**Answer: instruction** + +This classification is based on the description pointing towards a faulty or improperly handled CPU instruction (`f1`) within QEMU's emulation layer. \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1908626 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1908626 new file mode 100644 index 00000000..ab83b68c --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1908626 @@ -0,0 +1,7 @@ +The issue revolves around the use of an atomic test-and-set instruction in the spinlock implementation within PostgreSQL/Greenplum when run under QEMU user emulation for ARM64. The problem does not occur on physical ARM64 hardware but arises specifically within the emulated environment provided by QEMU. This suggests that there is a malfunction or misbehavior in how QEMU handles the specific instruction used for the test-and-set operation, which is crucial for the spinlock functionality. + +The bug report indicates that the spinlock mechanism fails under QEMU, leading to timeouts and PANIC errors. Since this behavior does not manifest on physical hardware, it points towards an issue with how QEMU emulates the instruction rather than a flaw in the instruction itself or the operating system's syscalls. Therefore, the problem is classified as an issue related to an instruction. + +```plaintext +instruction +``` \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1915327 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1915327 new file mode 100644 index 00000000..6ca89558 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1915327 @@ -0,0 +1,7 @@ +The issue revolves around incorrect behavior of the `cmpxchg` instruction in QEMU's TCG (Tiny Code Generator) implementation when compared to real CPU behavior. Specifically, QEMU incorrectly zero-extends the EAX register to RAX after a `cmpxchg` operation, which does not align with how the instruction should behave according to Intel specifications. + +**Category: instruction** + +The problem is clearly tied to an incorrect implementation of a specific x86_64 instruction (`cmpxchg`) within QEMU's TCG. This misbehavior affects both regular and locked versions of the `cmpxchg` instruction, leading to unexpected results in applications that rely on this instruction, such as those developed with BPF (Berkeley Packet Filter). The incorrect zero-extension of EAX to RAX violates the expected semantics defined by Intel's documentation, where the accumulator should remain unchanged if the comparison matches. + +Since this is a problem with how QEMU emulates a specific CPU instruction, it falls under the "instruction" category. This classification helps in directing the bug report to the appropriate part of the codebase and development team within the QEMU project that handles instruction emulation. \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1967248 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1967248 new file mode 100644 index 00000000..b66e2947 --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/1967248 @@ -0,0 +1,9 @@ +The issue described involves an uncaught target signal 5 (Trace/breakpoint trap) when running a binary under QEMU, but not when using GDB. The user also mentions that QEMU's 32-bit ARM Linux-user mode does not correctly handle BKPT instructions by converting them into SIGTRAP signals. + +**Analysis:** +- The problem revolves around the handling of BKPT (breakpoint) instructions in QEMU. +- Specifically, it appears that QEMU is not properly translating these instructions into the appropriate SIGTRAP signal, which is crucial for debugging purposes. +- This misbehavior leads to a core dump when running the program normally but works as expected under GDB. + +**Classification:** +This issue pertains to how QEMU processes specific ARM instructions (BKPT). Therefore, it falls under the **instruction** category. \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2374 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2374 new file mode 100644 index 00000000..db22962c --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2374 @@ -0,0 +1,20 @@ +The issue lies within the implementation of the FMOPA/FMOPS instructions in QEMU's AArch64 TCG helper functions. Specifically, the problem arises from an invalid pointer being used for floating-point status when handling 32-bit operands, leading to incorrect NaN generation. + +Step-by-step explanation: + +1. **Bug Identification**: + - The `sme_fmopa_s` function in `target/arm/tcg/sme_helper.c` is responsible for matrix multiplication and accumulation. + - When performing 32-bit floating-point operations, the function incorrectly uses an invalid pointer (`vst`) instead of a properly initialized local copy (`fpst`) to handle the floating-point status. + +2. **Consequences**: + - This misuse causes NaN results not to be generated as default NaNs but instead retain their non-default form. + - The test case provided demonstrates this by expecting default NaNs (0x0000c07f) but receiving non-default NaNs (0xffffffff). + +3. **Solution**: + - Modify the function to use `&fpst` instead of `vst` when invoking `float32_muladd`. + - This ensures that the correct floating-point status is used, leading to proper default NaN generation. + +4. **Category Classification**: + - The issue pertains directly to an instruction's implementation within QEMU, making it a clear case of an **instruction** bug. + +The problem is classified under the **instruction** category because it involves incorrect behavior in implementing specific CPU instructions (FMOPA/FMOPS) within the QEMU emulator. \ No newline at end of file diff --git a/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2495 b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2495 new file mode 100644 index 00000000..7a4345ab --- /dev/null +++ b/results/classifier/no-thinking-deepseek-r1:70b/reasoning/instruction/2495 @@ -0,0 +1,7 @@ +The issue pertains to incorrect behavior in translating MMX instructions when REX prefixes are involved. This affects how QEMU generates TCG (Tiny Code Generator) code for such instructions, leading to incorrect execution outcomes. The problem is specific to the handling of certain x86-64 MMX instructions with redundant or varying REX prefixes. + +The correct category for this bug report is: + +**instruction** + +This categorization aligns with the fact that the issue revolves around how QEMU processes specific x86-64 MMX instructions and their corresponding REX prefixes, leading to invalid TCG code generation. \ No newline at end of file |