On Mon, Apr 8, 2019 at 6:42 PM Noah Misch <n...@leadboat.com> wrote: > - lorikeet's FailedAssertion("!(vmq->mq_sender == ((void *)0))" looked > suspicious, but this happened six other times in the past year[2], always on > v10 lorikeet.
It happens on v11 too: https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=lorikeet&dt=2018-09-25%2010%3A06%3A31 The text changed slightly because we dropped an unnecessary extra pointer-to-volatile: FailedAssertion("!(mq->mq_sender == ((void *)0))" So either two workers started with the same parallel worker number, or something unexpectedly overwrote the shm_mq struct? -- Thomas Munro https://enterprisedb.com