r0 = signalfd4(0xffffffffffffffff, &(0x7f00000000c0), 0x8, 0x0)
r1 = epoll_create(0x1)
r2 = signalfd4(0xffffffffffffffff, &(0x7f00000000c0), 0x8, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r2, &(0x7f0000000100))
r3 = epoll_create(0x1)
epoll_ctl$EPOLL_CTL_ADD(r3, 0x1, r1, &(0x7f0000000140))
signalfd(r0, &(0x7f0000000080), 0x8)