diff options
Diffstat (limited to 'gitlab/issues/target_riscv/host_missing/accel_TCG/1224.toml')
| -rw-r--r-- | gitlab/issues/target_riscv/host_missing/accel_TCG/1224.toml | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/gitlab/issues/target_riscv/host_missing/accel_TCG/1224.toml b/gitlab/issues/target_riscv/host_missing/accel_TCG/1224.toml new file mode 100644 index 00000000..2ce5c165 --- /dev/null +++ b/gitlab/issues/target_riscv/host_missing/accel_TCG/1224.toml @@ -0,0 +1,22 @@ +id = 1224 +title = "QEMU crashes with failed assertion when executing compressed instructions with C extension support disabled" +state = "closed" +created_at = "2022-09-21T15:26:47.231Z" +closed_at = "2023-01-07T13:07:39.908Z" +labels = ["Closed::Fixed", "accel: TCG", "target: riscv"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1224" +host-os = "n/a" +host-arch = "riscv64" +qemu-version = "master" +guest-os = "n/a" +guest-arch = "riscv64" +description = """When executing compressed instructions with compressed instruction support disabled (c=off), the tcg riscv translations fails an assertion. +``` +qemu-system-riscv64: qemu/accel/tcg/translate-all.c:1449: tb_gen_code: Assertion `tb->size != 0' failed. +``` + +I believe that the issue is caused due to the fact that the compressed instruction without RVC support branch of the `decode_opc` function does not update `ctx->pc_succ_insn`, which causes `ctx->base.pc_next` to not be updated in `riscv_tr_translate_insn`, which then finally triggers the assertion once the tcg generation returns to `tb_gen_code`. + +Side note, it also seems like the `gen_exception_illegal` call in the same if case is not needed, since we also call it again at the end of the function.""" +reproduce = "n/a" +additional = "n/a" |