sysno == 233 exp-ptrcheck: the 'impossible' happened: unhandled syscall ... Thread 1: status = VgTs_Runnable ==31672== at 0x3312FC9EDC: epoll_ctl (in /lib64/tls/libc-2.3.4.so)
Added (along with epoll_wait and epoll_pwait which you would be bound to hit next) in r10908.
*** Bug 227562 has been marked as a duplicate of this bug. ***