1 files changed, 69 insertions, 0 deletions
diff --git a/results/classifier/118/TCG-x86/1147 b/results/classifier/118/TCG-x86/1147
new file mode 100644
index 00000000..10895280
--- /dev/null
+++ b/results/classifier/118/TCG-x86/1147
@@ -0,0 +1,69 @@
+x86: 0.933
+graphic: 0.900
+TCG: 0.840
+architecture: 0.777
+kernel: 0.703
+device: 0.693
+semantic: 0.499
+performance: 0.412
+vnc: 0.406
+ppc: 0.406
+arm: 0.332
+risc-v: 0.299
+user-level: 0.282
+PID: 0.280
+register: 0.277
+socket: 0.259
+files: 0.242
+mistranslation: 0.234
+permissions: 0.232
+boot: 0.189
+debug: 0.165
+VMM: 0.144
+virtual: 0.097
+network: 0.074
+peripherals: 0.073
+assembly: 0.069
+hypervisor: 0.057
+i386: 0.020
+KVM: 0.003
+--------------------
+x86: 0.986
+kernel: 0.889
+TCG: 0.448
+hypervisor: 0.176
+debug: 0.109
+virtual: 0.027
+files: 0.026
+user-level: 0.018
+architecture: 0.016
+register: 0.016
+performance: 0.015
+PID: 0.015
+device: 0.011
+arm: 0.006
+VMM: 0.006
+boot: 0.005
+KVM: 0.004
+assembly: 0.002
+semantic: 0.002
+socket: 0.002
+network: 0.002
+ppc: 0.001
+peripherals: 0.001
+graphic: 0.001
+permissions: 0.001
+vnc: 0.000
+risc-v: 0.000
+mistranslation: 0.000
+i386: 0.000
+
+x86_64 emu on aarch64 host: cpu_exec: assertion failed: (cpu == current_cpu)
+Description of problem:
+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).