[CRIU] Error while dumping filelocks

[beproject criu]

Hi,
I am trying to dump a lxc container using the below command

#criu dump --root /usr/local/lib/lxc/rootfs/root --evasive-devices \
--tcp-established --ext-mount-map /dev:dev --file-locks -n net -n mnt \
-n ipc -n pid -vvvvvvvv -D dump -o dump.log -t 79

But I get an error as follows :
Error (file-lock.c:99): Unresolved lock found pid 683 ino 7378

What could be the reason for this?
I have attached the log file.

Thanks.
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