Your firefox-60.0beta15 with today's snapshot on my X230 gets killed almost immediately:
699328 51384 firefox CALL shmget(0,0x47000,IPC_CREAT|SEM_R|SEM_A)
699329 51384 firefox PLDG shmget, "", errno 1 Operation not permitted
699330 51384 firefox PSIG SIGABRT SIG_DFL
So shmget(2) needs to be hoised.
