r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./file1\x00', 0x42, 0x0)
pwrite64(r0, &(0x7f0000000200)='N', 0x1, 0x0)
mmap$IORING_OFF_SQ_RING(&(0x7f0000ff9000/0x1000)=nil, 0x1000, 0x7, 0x13, r0, 0x0)
madvise(&(0x7f0000ff3000/0xd000)=nil, 0xd000, 0x17)
munmap(&(0x7f0000ff3000/0xd000)=nil, 0xd000)