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Diffstat (limited to 'gitlab/issues/target_riscv/host_missing/accel_TCG/1587.toml')
| -rw-r--r-- | gitlab/issues/target_riscv/host_missing/accel_TCG/1587.toml | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/gitlab/issues/target_riscv/host_missing/accel_TCG/1587.toml b/gitlab/issues/target_riscv/host_missing/accel_TCG/1587.toml deleted file mode 100644 index 967666782..000000000 --- a/gitlab/issues/target_riscv/host_missing/accel_TCG/1587.toml +++ /dev/null @@ -1,33 +0,0 @@ -id = 1587 -title = "Invalid memory access allowed (possibly due to TLB bypassing PMP after mret)" -state = "closed" -created_at = "2023-04-08T20:36:34.624Z" -closed_at = "2023-05-17T05:06:35.011Z" -labels = ["accel: TCG", "target: riscv"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1587" -host-os = "Fedora 37" -host-arch = "Host: x86-64, Guest: RISCV64" -qemu-version = "QEMU emulator version 7.2.93 (v8.0.0-rc3-dirty)" -guest-os = "Bare metal" -guest-arch = "RISC-V 64" -description = """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.""" -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 = """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)""" |