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Diffstat (limited to 'results/classifier/deepseek-2/output/hypervisor/1587')
| -rw-r--r-- | results/classifier/deepseek-2/output/hypervisor/1587 | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/results/classifier/deepseek-2/output/hypervisor/1587 b/results/classifier/deepseek-2/output/hypervisor/1587 deleted file mode 100644 index 7f87ba466..000000000 --- a/results/classifier/deepseek-2/output/hypervisor/1587 +++ /dev/null @@ -1,26 +0,0 @@ - -Invalid memory access allowed (possibly due to TLB bypassing PMP after mret) -Description of problem: -A load instruction that should be blocked by PMP due to MPRV changing the effective privilege mode to U is allowed. The sequence that I observed was: - - -1. Be in machine mode. -2. Set MPP to U (0). -3. Set MPRV to 1. -4. Enter an ISR, setting MPP to M (3). -5. Load from address xxxx (populating the QEMU TLB). -6. Execute mret, setting MPP back to U (0). -7. Load from address xxxx, which should fail but succeeds without any TLB fill. -Steps to reproduce: -``` -git clone https://github.com/dreiss/qemu_pmp_repro -cd qemu_pmp_repro -./build_and_run.sh -``` -The `build_and_run.sh` script expects `riscv-none-elf-gcc` and `qemu-system-riscv64` on PATH. It will also attempt to run the reproducer with `spike`, the reference RISC-V emulator, which succeeds. -Additional information: -Adding a call to `tlb_flush` to `helper_mret` causes this test to pass in QEMU, but I don't know if that's a valid fix. - -Output from `build_and_run.sh`: - -[output.txt](/uploads/108547bcb160a8f0bfffe72ea77b215f/output.txt) |