r0 = signalfd4(0xffffffffffffffff, &(0x7f0000000140), 0x8, 0x0)
r1 = epoll_create1(0x0)
r2 = epoll_create1(0x0)
r3 = signalfd4(0xffffffffffffffff, &(0x7f0000000140), 0x8, 0x0)
r4 = epoll_create1(0x0)
epoll_ctl$EPOLL_CTL_ADD(r4, 0x1, r3, &(0x7f0000000040))
epoll_ctl$EPOLL_CTL_ADD(r1, 0x1, r4, &(0x7f0000000080)={0x2000200b})
epoll_ctl$EPOLL_CTL_ADD(r2, 0x1, r1, &(0x7f0000000000))
signalfd(r0, &(0x7f0000000240), 0x8)