r0 = signalfd4(0xffffffffffffffff, &(0x7f0000000000), 0x8, 0x0)
poll(&(0x7f0000000900)=[{r0}, {}], 0x2, 0x81)
syz_mount_image$ext4(0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)