Porting checkpoint system to arm: write_file error

[Jerf gefera]

hi all,
The attachment is the img file and dmesg message.
If I comment the code of cr_write_files in both checkpoint.c & restart.c,
then i can checkpoint and restart the process(of cause, there are no file
operations in the checkpointed process). it is strange.
i hope you can point it out for me.
Thank you very much!
best wishes,
gefera
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