[CRIU] zdth.sh failed at pipe00 test

[Qiang Huang]

Hi guys:

I haven't updated criu for a while, but today, when I updated crtools to
the latest, compiled and launch the zdtm test, it failed at the first case:

# bash zdtm.sh
< snip >
./pipe00 --pidfile=pipe00.pid --outfile=pipe00.out
make: Leaving directory `/home/hq/CRIU/crtools/test/zdtm/live/static'
Dump 10896
WARNING: process pipe00 is left running for your debugging needs
Test: zdtm/live/static/pipe00
====================== ERROR ======================
Dump log   : /home/hq/CRIU/crtools/test/dump/pipe00/10896/1/dump.log
(00.012438) Error (parasite-syscall.c:231): Parasite exited with -1
(00.012454) Error (parasite-syscall.c:636): Parasite failed to drain descriptors
(00.012461) Error (cr-dump.c:1611): Dump files (pid: 10896) failed with -1
(00.012562) Error (parasite-syscall.c:231): Parasite exited with -1


The dump.log is something like this:
< snip >
405 (00.011354) ----------------------------------------
406 (00.011357)
407 (00.011360) Collecting fds (pid: 10896)
408 (00.011364) ----------------------------------------
409 (00.011381) Found 5 file descriptors
410 (00.011385) ----------------------------------------
411 (00.011653) Putting parasite blob into 0x7fdccf5e0000->0x7f758a238000
412 (00.011711) Putting tsock into pid 10896
413 (00.012105) sid=892352816 pgid=0 pid=825062000
414 (00.012340)
415 (00.012345) Dumping opened files (pid: 10896)
416 (00.012349) ----------------------------------------
417 (00.012438) Error (parasite-syscall.c:231): Parasite exited with -1
418 (00.012454) Error (parasite-syscall.c:636): Parasite failed to drain descriptors
419 (00.012461) Error (cr-dump.c:1611): Dump files (pid: 10896) failed with -1
420 (00.012562) Error (parasite-syscall.c:231): Parasite exited with -1
421 (00.012764) Unlock network
422 (00.012780) Unfreezing tasks into 1
423 (00.012784)     Unseizeing 10896 into 1
424 (00.012793)     Unseizeing 10897 into 1


My kernel is the latest v3.7 which is pushed out by Cyrill a few weeks ago.

What's the problem I met? Any ideas?