Yes, this build fixes the bug.
# uname -a; dd if=/dev/xvda iflag=direct bs=16384 of=/dev/null & DD_PID=$!;
sleep 1 && ./getdelays -di -p $DD_PID; kill $DD_PID; wait
Linux hostname-redacted 4.13.0-32-generic #35~lp1747769 SMP Thu Feb 8 17:37:46
UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
[1] 9578
print delayacct stats ON
printing IO accounting
PID 9578
CPU count real total virtual total delay total delay
average
2621 0 23341678 709838
0.000ms
IO count delay total delay average
2620 975185892 0ms
SWAP count delay total delay average
0 0 0ms
RECLAIM count delay total delay average
0 0 0ms
dd: read=42942464, write=0, cancelled_write=0
[1]+ Terminated dd if=/dev/xvda iflag=direct bs=16384 of=/dev/null
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https://bugs.launchpad.net/bugs/1747769
Title:
Cherry pick c96f5471ce7d for delayacct fix
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