r0 = epoll_create(0x8a1)
epoll_pwait(r0, &(0x7f0000000000)=[{}], 0x1, 0x800003, 0x0, 0x0)
r1 = signalfd4(0xffffffffffffffff, &(0x7f00000000c0), 0x8, 0x0)
epoll_ctl$EPOLL_CTL_ADD(r0, 0x1, r1, &(0x7f0000000100))
syz_mount_image$vfat(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)