r0 = mmap$IORING_OFF_CQ_RING(&(0x7f0000ffe000/0x2000)=nil, 0x2000, 0x4, 0x80071, 0xffffffffffffffff, 0x8000000)
syz_io_uring_complete(r0)
madvise(&(0x7f0000ffc000/0x4000)=nil, 0x4000, 0x15)
syz_io_uring_submit(r0, 0x0, 0x0, 0x0)