/tmp/mt/mlockswap.c: In function 'main':
/tmp/mt/mlockswap.c:26:5: warning: implicit declaration of function 'sleep'; did you mean 'strsep'? [-Wimplicit-function-declaration]
     sleep(8);
     ^~~~~
     strsep
touched 4096 MB; sleeping 8s for pageout
Device             Blocks     Used    Avail Capacity  Type
/dev/vbd0s1b        4096M    1026M    3070M    25%    Interleaved
mismatch off=0 i=1 got=00000000 want=00000001
mismatch off=0 i=2 got=00000000 want=00000002
mismatch off=0 i=3 got=00000000 want=00000003
mlock-verify: bad=16253937 of 16777216 words
BUG REPRODUCED: mlock zero-filled swapped pages (silent data destruction)
rc=2