vma-pthread unstable on aarch64 hardware

[Alex Bennée]

Date: Tue, 21 Mar 2023 13:48:20 +0000
User-agent: mu4e 1.9.22; emacs 29.0.60

Hi,

Chasing down some unstable check-tcg tests and I can get vma-pthread to
fail fairly reliably on the CI configuration ('../../configure'
'--enable-debug' '--static' '--disable-system' '--disable-pie') although
it seems to hold up on the default configuration ok.

  retry.py -n 30 -c -- ./qemu-aarch64 ./tests/tcg/aarch64-linux-user/vma-pthread
  ...
  **
  ERROR:../../accel/tcg/cpu-exec.c:1019:cpu_exec_setjmp: assertion failed: (cpu 
== current_cpu)
  Bail out! ERROR:../../accel/tcg/cpu-exec.c:1019:cpu_exec_setjmp: assertion 
failed: (cpu == current_cpu)
  ...
  Results summary:
  0: 29 times (96.67%), avg time 1.503 (0.00 varience/0.00 deviation)
  -5: 1 times (3.33%), avg time 0.252 (0.00 varience/0.00 deviation)
  Ran command 30 times, 29 passes

That said it might be responsible for some of the other tests that fail
when I do something like:

  cd tests/tcg/aarch64-linux-user/
  retry.py -n 30 --until -- make -f ../Makefile.target run

where I've seen random failures in float_convs, mte-1 and testthread
which make me wonder if this is some sort of toolchain/build config
issue?

Any ideas?

-- 
Alex Bennée
Virtualisation Tech Lead @ Linaro