Hi, On 2023-01-27 22:23:58 +1300, Thomas Munro wrote: > After 1000 make check loops, and 1000 make -C src/test/modules/test_shm_mq > check loops, on the same FBSD 13.1 machine as elver which has failed > like this once before, I haven't been able to reproduce this on > REL_12_STABLE.
Did you use the same compiler / compilation flags as when elver hit it? Clearly Tomas' case was with at least some optimizations enabled. Except that you're saying that you hit this on elver (amd64), I think it'd be interesting that we see the failure on an arm host, which has a less strict memory order model than x86. IIUC elver previously hit this on 12? Greetings, Andres Freund
