scripts/rand-vm.sh

   1 #!/bin/sh
   2 #
   3 # Do a random subset of VM related syscalls.
   4 # (Always do mmap, so the child processes have some local maps)
   5
   6 OLDPATH=$(pwd)
   7 TRINITY_PATH=${TRINITY_PATH:-$OLDPATH}
   8
   9 if [ -d tmp ]; then
  10   TRINITY_TMP=$(mktemp -d $(pwd)/tmp/trinity.XXXXXX)
  11 else
  12   TRINITY_TMP=$(mktemp -d /tmp/trinity.XXXXXX)
  13 fi
  14
  15 TRINITY_PATH=${TRINITY_PATH:-.}
  16 TRINITY_TMP=$(mktemp -d /tmp/trinity.XXXXXX)
  17
  18 check_tainted()
  19 {
  20     if [ "$(cat /proc/sys/kernel/tainted)" != $TAINT ]; then
  21       echo ERROR: Taint flag changed $(cat /proc/sys/kernel/tainted)
  22       exit
  23     fi
  24 }
  25
  26 TAINT=$(cat /proc/sys/kernel/tainted)
  27
  28 ARRAY[0]="madvise"
  29 ARRAY[1]="mbind"
  30 ARRAY[2]="migrate_pages"
  31 ARRAY[3]="mincore"
  32 ARRAY[4]="mlockall"
  33 ARRAY[5]="mlock"
  34 ARRAY[6]="move_pages"
  35 ARRAY[7]="mprotect"
  36 ARRAY[8]="mremap"
  37 ARRAY[9]="msync"
  38 ARRAY[10]="munlockall"
  39 ARRAY[11]="munlock"
  40 ARRAY[12]="munmap"
  41 ARRAY[13]="remap_file_pages"
  42 ARRAY[14]="vmsplice"
  43
  44 while [ 1 ];
  45 do
  46         syscalls="-c mmap"
  47         for i in $(seq 0 2)
  48         do
  49           syscalls=$(echo $syscalls -c ${ARRAY[$(($RANDOM % 15))]})
  50         done
  51
  52         echo testing $syscalls
  53
  54         chmod 755 $TRINITY_TMP
  55         pushd $TRINITY_TMP > /dev/null
  56
  57         if [ ! -f $TRINITY_PATH/trinity ]; then
  58                 echo lost!
  59                 pwd
  60                 exit
  61         fi
  62
  63         MALLOC_CHECK_=2 $TRINITY_PATH/trinity -q -l off $syscalls -N 99999 -C 64
  64         popd > /dev/null
  65
  66         check_tainted
  67         echo
  68         echo
  69 done