[syslog-ng] 3.3b1: "EOF occurred while idle"

I'm seeing a lot of these: May 29 18:59:48 fold err: POLLERR occurred while idle; fd='25' [...] May 29 19:04:13 fold err: EOF occurred while idle; fd='25' (It also just coredumped, but this led to an autoreboot and the log was not preserved across the reboot :( ) -- NULL && (void)