github.com/google/syzkaller@v0.0.0-20240517125934-c0f1611a36d6/sys/linux/test/gup_fast (about)

     1  # Test for GUP fast.
     2  # requires: arch=s390x
     3  
     4  mmap(&(0x7f0000000000/0x2000)=nil, 0x2000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
     5  
     6  r0 = openat$urandom(0xffffffffffffff9c, &AUTO='/dev/urandom\x00', 0x0, 0x0)
     7  read(r0, &(0x7f0000000000), 0x2000)
     8  close(r0)
     9  
    10  r1 = openat(0xffffffffffffff9c, &AUTO='./file1\x00', 0x105042, 0x1ff)
    11  read(r1, &(0x7f0000000000), 0x2000)
    12  close(r1)
    13  munmap(&(0x7f0000000000/0x2000), 0x2000)