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Diffstat (limited to 'gitlab/issues/target_missing/host_arm/accel_TCG/1147.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_arm/accel_TCG/1147.toml | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/gitlab/issues/target_missing/host_arm/accel_TCG/1147.toml b/gitlab/issues/target_missing/host_arm/accel_TCG/1147.toml new file mode 100644 index 000000000..ce322bc06 --- /dev/null +++ b/gitlab/issues/target_missing/host_arm/accel_TCG/1147.toml @@ -0,0 +1,21 @@ +id = 1147 +title = "x86_64 emu on aarch64 host: cpu_exec: assertion failed: (cpu == current_cpu)" +state = "closed" +created_at = "2022-08-07T20:06:19.889Z" +closed_at = "2023-01-17T15:47:24.283Z" +labels = ["Closed::Fixed", "accel: TCG", "host: arm"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1147" +host-os = "Asahi Linux" +host-arch = "aarch64" +qemu-version = "7.0.0" +guest-os = "Ubuntu 22.04 LTS" +guest-arch = "x86_64" +description = """Execution of some binaries crashes with `Bail out! ERROR:../qemu-7.0.0/accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu)`. Looking at the code, that code is wrapped in a gcc/clang ifdef. Recompiling with clang produces this crash instead: `... include/qemu/rcu.h:102: void rcu_read_unlock(void): Assertion 'p_rcu_reader->depth != 0' failed.` + +No easier steps to reproduce (yet) than `systemd-nspawn`ing into an x86_64 Ubuntu container invoking qemu-x86_64-static through binfmt. Commands such as `ls` work fine, while `apt-get` will immediately crash with the error listed above. + +Note that this happens running Asahi Linux on the bare metal of an M1-based Macbook Pro. This same issue does *not* occur running the *same* binaries with the *same* x86_64 Ubuntu image on an Arch or Ubuntu VM under macOS on the same machine - regardless of if the QEMU binaries were built in a VM or in Asahi. + +These are big.LITTLE chips. Using taskset/affinity to limit the target process to a single specific core does not help. The Asahi kernel has a 16K page-size, which is known to cause trouble for some programs. qemu-arm(-static) however works without any issues (the M1 cannot run 32-bit ARM code natively, only 64-bit).""" +reproduce = "n/a" +additional = "n/a" |